SSD2选择题答案

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Multiple-Choice Quiz 1

1. Which of the following is (are) true about computers? They accept input. They store data.

They produce output. (a) II only

(b) II and III only (c) I and III only (d) I, II, and III

Correct answer is (d)

2. A computer processes data in a device called the (a) server (b) CPU

Correct answer is (b)

3. A computer file is a named collection of data that exists on which of the following? Optical disk (CD or DVD) Floppy disk Hard disk (a) I, II, and III (b) III only (c) I only (d) II and III only

Correct answer is (a)

4. Computers that operate in essentially the same way are said to be (a) compatible (b) compound (c) user-friendly (d) integrated

Correct answer is (a)

5. Which of the following can supply input to a computer? A person

The environment Another computer (a) III only (b) I, II, and III (c) I and II only (d) I only

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Multiple-Choice Quiz 2

1. Which of the following is (are) true regarding the abacus? The abacus was first used in India.

Calculations are done using the abacus by manually moving beads. (a) None (b) II only (c) I only (d) I and II

Correct answer is (b)

2. Which of the following is (are) true regarding the comparison between transistors and vacuum tubes?

Transistors are smaller and more reliable than vacuum tubes. Vacuum tubes are more energy efficient than transistors. (a) I and II (b) I only (c) II only (d) None

Correct answer is (b)

3. Which of the following is (are) true regarding the Analytical Engine designed by Charles Babbage?

It was designed to be a general-purpose calculating device. It included the concepts of input, process, storage, and output of data. (a) I and II (b) None (c) II only (d) I only

Correct answer is (a)

4. Which of the following is (are) true regarding the application of computers in the education field?

Simulation-based education can be used for medical training, molecular modeling, and military training.

Computers can be programmed to provide language training and to correct the pronunciation errors users make. (a) I and II (b) I only (c) None (d) II only

Correct answer is (a)

5. Which of the following statements concerning microprocessors is correct? (a) Microprocessors can only be programmed for a single purpose. (b) Microprocessors consist of integrated circuits. (c) Most microprocessors are as big as a human hand.

(d) Microprocessors cannot be programmed after they are manufactured.

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Correct answer is (b)

6. Which of the following statements about transistors and vacuum tubes is (are) true? Transistors are smaller than vacuum tubes. Transistors burn out faster than vacuum tubes.

A computer that uses transistors would require more power than a computer that uses vacuum tubes. (a) III only

(b) II and III only (c) I and II only (d) I only

Correct answer is (d)

7. Which of the following describes the functionality of an Intelligent Agent that is used in a customer relationship management system?

(a) An Intelligent Agent is a program that collects information about a user's behavior, and customizes the content on a Web site accordingly.

(b) An Intelligent Agent is a program that keeps track of the product database, work schedule, and budget of a project.

(c) An Intelligent Agent is a database that gathers information about the customer base, marketing effectiveness, and market trends in order to learn more about customers' behaviors. (d) An Intelligent Agent enables customers to search a consumer Web site. Correct answer is (a)

8. Which of the following statements is (are) true about transistors?

They consist of microscopic circuit elements, such as wires, transistors, capacitors, and resistors, packed on a thin slice of silicon.

They were used to replace vacuum tubes in computer systems. (a) None (b) II only (c) I and II (d) I only

Correct answer is (b)

9. Which of the following is (are) true regarding integrated circuits and microprocessors? Integrated circuits contain more electrical components than microprocessors.

Microprocessors must be manufactured for each application separately, while integrated circuits can be reused. (a) None (b) I only (c) I and II (d) II only

Correct answer is (a)

10. Which of the following statements concerning microprocessors is correct? (a) Microprocessors can only be programmed for a single purpose. (b) Microprocessors cannot be programmed after they are manufactured. (c) Microprocessors consist of integrated circuits.

(d) Most microprocessors are as big as a human hand.

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Correct answer is (c)

11. Which of the following is (are) true regarding the Pascaline? It is an electronic calculating device.

It uses vacuum tubes for performing mathematical operations. It uses punched cards for storing program instructions. (a) II and III only (b) I only (c) None

(d) I and III only

Correct answer is (c)

12. Which of the following is (are) true regarding the use of punched cards in computers? Punched cards use a technique that was originally used in Jacquard looms. Punched cards can be used to store program instructions, but not data. (a) I and II (b) I only (c) II only (d) None

Correct answer is (b)

13. Which of the following is (are) true regarding the application of computers in the business field?

Computers can be used in supply chain management both for tracking the supply of raw materials as well as the supply of finished products.

Customer-relationship-management software systems enable customers to place orders and provide mechanisms to process placed orders. (a) I and II (b) II only (c) None (d) I only

Correct answer is (d)

14. Which of the following is (are) true regarding the application of computers in the education field?

Simulation-based education can be used for medical training, molecular modeling, and military training.

Computers can be programmed to provide language training and to correct the pronunciation errors users make. (a) II only (b) I only (c) None (d) I and II

Correct answer is (d)

15. Which of the following is (are) true regarding vacuum tubes? They can be used to control the flow of electrons.

They perform computations more quickly than mechanical components. (a) I and II

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(b) None (c) I only (d) II only

Correct answer is (a)

Multiple-Choice Quiz 3

1 How many bits are required to store any given number in the range 0 to 255? (a) 32 (b) 16 (c) 4 (d) 8

Correct answer is (d)

2. What is the decimal equivalent of the binary number 1101010? (a) 110 (b) 108 (c) 106 (d) 104

Correct answer is (c)

3. Which of the following is approximately equivalent to 160,000,000 bytes? 160 Megabytes 16 Nanobytes 0.16 Gigabytes (a) I only (b) I and II (c) III only (d) I and III Correct answer is (d)

4. Of the following, which best describes the difference between bits and bytes?

(a) A byte is the smallest unit of information in a computer. A bit is a collection of bytes. (b) A byte represents the values 0 and 1, while a bit represents a range of values from 0 to 255. (c) A bit is the smallest unit of information in a computer. A byte is a collection of bits. (d) There is no difference between bits and bytes. The terms are used interchangeably. Correct answer is (c)

5. What is the binary equivalent of the decimal number 123? (a) 1111011 (b) 1111101 (c) 1101110 (d) 1111111

Correct answer is (a)

Multiple-Choice Quiz 4

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1. Which of the following kinds of projects typically requires a special type of CPU that would not be found in a desktop or mainframe computer?

(a) Looking up and storing information on customer accounts (b) Monitoring the operation of an automobile engine (c) Performing business calculations for a financial report (d) Processing requests to send and receive email Correct answer is (b)

2. Which of the following manufacturers provides the Pentium family of processors for desktop computers? (a) Intel (b) IBM (c) Cyrix (d) AMD

Correct answer is (a)

3. A computer clock with a speed of 100 MHz cycles how many times per second? (a) 100 (b) 100,000 (c) 1,000

(d) 100,000,000

Correct answer is (d)

4. Which of the following can be an advantage of buying a computer that contains a widely-used CPU or its equivalent clone? A lot of established computer suppliers provide products using that type of CPU.

The cost of the CPU is likely to be lower because of the large quantities of the CPU that have been sold.

There will be more operating systems that work with that type of CPU. (a) I, II, and III (b) I and II only (c) II and III only (d) I and III only

Correct answer is (a)

5. Of the following types of memory, which is least expensive? (a) Register (b) L1 Cache (c) DRAM

(d) L2 Cache

Correct answer is (c)

6. In order to retain data for future reference, volatile storage requires (a) the use of optical media (b) the use of magnetism

7. An Arithmetic/Logic Unit typically performs which of the following operations?

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Retrieval of instructions from RAM

Performance of greater-than and less-than comparisons (a) None (b) I only (c) I and II (d) II only

Correct answer is (d)

8. Which of the following is (are) true of ROM? ROM is volatile.

The instructions needed to boot a computer are typically stored in ROM. (a) I only (b) None (c) I and II (d) II only

Correct answer is (d)

9. Which of the following types of memory typically holds computer configuration settings and is powered by a small battery? (a) Cache (b) Flash (c) CMOS (d) ROM Correct answer is (c)

10. Consider Computer A, which uses a 1.2-GHz CPU, and Computer B, which uses a 1-GHz CPU. For any given program P, which of the following is true? (a) It cannot be determined whether program P will run faster on computer A or on computer B without knowing more about program P.

(b) Program P runs faster on Computer B than it does on computer A. (c) Program P runs faster on Computer A than it does on computer B.

(d) It takes the same amount of time for program P to run on computer A as it does on computer B.

Correct answer is (a)

11. Which of the following is (are) true of modern microprocessors? Microprocessor chips are typically the size of a deck of cards. Microprocessors typically contain millions of transistors. (a) I only (b) I and II (c) None (d) II only

Correct answer is (d)

12. Where is a computer's CPU located? (a) On a floppy disk drive (b) On an expansion card (c) On a hard disk drive (d) On the motherboard

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Correct answer is (d)

13. Which of the following components is (are) typically found on the motherboard of a computer?

Expansion slots The microprocessor The CMOS memory chip (a) I and III only (b) I and II only (c) I, II, and III (d) II only

Correct answer is (c)

14. When a computer is turned on, the central processing unit performs instructions specified by the _____ that searches the disk drive for the main operating system files. (a) RAM BIOS (b) CMOS (c) ROM BIOS

(d) virtual memory Correct answer is (c) 15.

The list of instructions that a CPU is able to execute is known as its (a) glossary (b) operands (c) instruction set (d) op codes

Correct answer is (c)

16. CPU performance is influenced by which of the following? Word size Clock rate

Instruction set size (a) I and II only (b) II only

Correct answer is (d)

17. The microprocessor in a multi-purpose computer is also known as the (a) CPU (b) VGA (c) RAM (d) PCI

Correct answer is (a)

18. Components of the CPU typically include which of the following? The control unit

The Level 1 cache memory The Arithmetic/Logic Unit

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(a) I and III only (b) II and III only (c) I, II, and III (d) I and II only

19. Which of the following is the primary function of a CPU? (a) To execute only the operating system's instructions

(b) To execute only the instructions within a user specified application (c) To execute any program's instructions stored in RAM

(d) To determine if a program functions correctly before using it Correct answer is (c)

20. Which of the following memory types holds data but requires very little power to retain its contents? (a) RAM

(b) Virtual memory (c) RDRAM (d) CMOS

Correct answer is (d)

21. Steps performed by the CPU during the fetch-execute cycle include which of the following? Interpret Store

(a) I and II (b) II only (c) I only (d) None

Correct answer is (a)

22. What is an area in the computer system unit that temporarily holds data before and after it is processed until the computer is turned off? (a) CMOS (b) RAM

Correct answer is (b)

23. Which of the following is the primary function of a CPU? (a) To execute any program's instructions stored in RAM

(b) To determine if a program functions correctly before using it

(c) To execute only the instructions within a user specified application (d) To execute only the operating system's instructions Correct answer is (a)

24. The budget processor produced by Intel is called the (a) Celeron (b) K6

Correct answer is (a)

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Multiple-Choice Quiz 5

1. Ethernet cards are used to provide a computer a connection to which of the following? (a) Large capacity storage devices

(b) Another computer via the telephone lines (c) Local area networks

(d) High speed input/output devices Correct answer is (c)

2. Desktop computer expansion slots include which of the following? PCMCIA PCI AGP

(a) II and III only (b) I and II only (c) I, II, and III (d) I and III only

Correct answer is (a)

3. Which of the following is (are) true of a bus on the motherboard? A bus is not critical to the overall performance of a computer system.

A bus is used to transport data between components on the motherboard. The CPU and other components use a bus to read and write data into RAM. (a) I, II, and III (b) I and III only (c) II and III only (d) I and II only Correct answer is (c)

4. Which of the following considerations is (are) important when purchasing a graphics card for a computer?

The type of printer

The type of bus interface to be used by the graphics card

Whether the card has a graphics processor to speed up processing (a) I and II only (b) I, II, and III (c) I and III only (d) II and III only

Correct answer is (d)

5. Which of the following is a relatively new and flexible interface for connecting many diverse input/output devices to a computer through a single port? (a) USB (b) AGP

Correct answer is (a)

6. A parallel port can be used to connect a computer to a

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(a) keyboard (b) mouse (c) printer (d) monitor

Correct answer is (c)

7. Which of the following devices is involved in both frequent and large data transfers? (a) Printer (b) Monitor (c) Scanner (d) Keyboard

Correct answer is (b)

8. Input devices for a computer include which of the following? Digital cameras Scanners Speakers

(a) I, II, and III (b) I and II only (c) III only

(d) I and III only

Correct answer is (b)

9. A desktop computer expansion slot that is primarily used for graphics cards is the _____ slot. (a) AGP (b) PCMCIA (c) ISA (d) PCI

Correct answer is (a)

10. Which of the following are true of Universal Serial Bus (USB)?

A large number of devices can potentially be interconnected using the USB. It is used with many types of devices for transferring large amounts of data. It supports existing serial- and parallel-port devices. (a) II and III only (b) I, II, and III (c) I and III only (d) I and II only

Correct answer is (d)

11. Which bus transfers data between the CPU and the chipset? (a) PCI (b) Memory (c) AGP

(d) Front side

Correct answer is (d)

12. Which of the following is (are) true of CRT monitors? CRT monitors are typically used in notebook computers. CRT monitors use electron beams to create colored light.

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(a) II only (b) I and II (c) None (d) I only

Correct answer is (a)

13. A monitor is primarily which kind of device? (a) An output device (b) A storage device (c) A memory device (d) An input device Correct answer is (a)

14. Which of the following are important considerations when purchasing a monitor? The number of resolution modes supported The different levels of color depth supported The size of the viewing area that can be projected (a) II and III only (b) I and III only (c) I, II, and III (d) I and II only

Correct answer is (c)

15. Which of the following technologies uses a gun-like mechanism to spray the screen with dots of color? (a) Pitch (b) LCD (c) CRT (d) VIS Correct answer is (c)

16. Computer output devices include which of the following? Projector Microphone Printer

(a) II and III only (b) I and III only (c) I, II, and III (d) I and II only

Correct answer is (b)

17. Laptop computers typically contain _____ slots. (a) AGP (b) PCMCIA (c) ISA (d) DB-9

Correct answer is (b)

18. Which of the following components is (are) found on an accelerated graphics card? A processor

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Video memory EIDE

(a) I and III only (b) I and II only (c) II and III only (d) I, II, and III

Correct answer is (b)

19. Which of the following is (are) true of USB computer connections? A USB hub can support up to 127 devices.

Typically, USB devices can be connected without restarting the computer. (a) I only (b) I and II (c) II only (d) None

Correct answer is (b)

20. Which of the following is (are) true of computer printers?

Typically, ink-jet printers have a lower cost per page than laser printers. Ink-jet printers are typically faster than laser printers. (a) I only (b) None (c) II only (d) I and II

Correct answer is (b)

21 Which of the following is (are) true of computer printers? Typically, ink-jet printers have a lower cost per page than laser printers. Ink-jet printers are typically faster than laser printers. (a) II only (b) I only (c) I and II (d) None

Correct answer is (d)

22 Which of the following are primarily input devices? Mouse Scanner Printer

(a) I and III only (b) I, II, and III (c) I and II only (d) II and III only Correct answer is (c)

23 A computer bus that transfers data twice per cycle is said to be double (a) channeled (b) timed (c) wide

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(d) pumped

Correct answer is (d)

24 Which of the following is a relatively new and flexible interface for connecting many diverse input/output devices to a computer through a single port? (a) AGP (b) USB

Correct answer is (b)

25 Desktop computer expansion slots include which of the following? PCMCIA PCI AGP

(a) II and III only (b) I and III only (c) I, II, and III (d) I and II only

Correct answer is (a)

26 Which of the following is not true when comparing ink-jet printers with laser printers? (a) Ink-jet and laser printers have a similar cost per printed page when printing large quantities of pages. (b) Laser printers have a wide price range and are more expensive than ink jets. (c) Ink jets have a slower print speed. (d) Both ink-jet and laser printers produce fairly high quality graphics. Correct answer is (a)

27 A desktop computer expansion slot that is primarily used for graphics cards is the _____ slot. (a) AGP (b) PCMCIA (c) PCI (d) ISA

Correct answer is (a)

28 Input devices for a computer include which of the following? Digital cameras Scanners Speakers

(a) I and II only (b) III only (c) I, II, and III (d) I and III only

Correct answer is (a)

29 One advantage of an LCD monitor is (a) increased radiation emission (b) brightness (c) compactness

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(d) low price

Correct answer is (c) 30

A monitor is primarily which kind of device? (a) An input device (b) A memory device (c) An output device (d) A storage device Correct answer is (c)

31 Computer output devices include which of the following? Projector Microphone Printer

(a) I, II, and III (b) II and III only (c) I and III only (d) I and II only

Correct answer is (c)

32 The speed of a computer bus is measured in _____, whereas the transfer rate is measured in _____.

(a) hertz, Bps (b) bits, channels (c) channels, bits (d) Bps, hertz Correct answer is (a)

Multiple-Choice Quiz 6

1. Using a single EIDE interface, a total of _____ devices can be accommodated. (a) seven (b) two (c) four (d) eight

Correct answer is (c)

2. Which of the following is true of hard disk drives?

(a) Their access times are generally twice as long as RAM access times. (b) They require power to retain information. (c) Their capacity is currently measured in MB.

(d) They use magnetic material to store information. Correct answer is (d)

3. Of the following storage media, which has the largest capacity? (a) DVD (b) CD-ROM

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(d) CompactFlash card Correct answer is (a)

4. Floppy disks typically hold about _____ of data, while hard disk drives typically hold several _____ of data (a) 1 MB, GBs (b) 100 KB, GBs (c) 10 MB, TBs (d) 1 MB, TBs

Correct answer is (a)

5. Of the following types of storage, which provides the fastest access to data? (a) CD-ROM (b) RAM (c) cache

(d) hard disk

Correct answer is (c)

6. Which of the following are interfaces used with hard disk drives? AGP EIDE Ultra ATA

(a) II and III only (b) I, II, and III (c) I and II only (d) I and III only

Correct answer is (a)

7. Which of the following is (are) true regarding flash memory? It uses electronic charges for recording data. It makes use of moving parts inside the chip for storing data. (a) II only (b) None (c) I and II (d) I only

Correct answer is (d)

8. Which of the following are appropriate storage media for archiving the tens of millions of bytes of data typically found on a PC hard disk drive? A floppy disk

A magnetic tape cassette A Jaz disk

(a) I and III only (b) II and III only (c) I and II only (d) I, II, and III

Correct answer is (b)

9. Which of the following is (are) true regarding floppy disks and Zip disks? Zip disks are capable of storing more data than floppy disks.

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Floppy disks transfer data more quickly than Zip disks. (a) II only (b) None (c) I and II (d) I only

Correct answer is (d)

10. Which of the following is not a useful strategy for organizing file data on disks so as to access the data in the shortest possible time?

(a) Organizing file data that spans multiple disk platters so as to occupy one side of a platter completely, prior to overflowing onto a different platter

(b) Organizing file data on different disk drives to allow for simultaneous access of the data

(c) Organizing file data on a disk in consecutive sectors and tracks to minimize the time required to position the disk head to the proper location

(d) Organizing file data in consecutive sectors to take advantage of faster rotational speeds Correct answer is (a)

11 When purchasing a hard disk drive, which of the following are major considerations in deciding between hard disk drives that are similar in price and capacity? The speed at which their platters rotate The length of their access times

The speed with which they transfer data to primary memory (a) I and II only (b) III only (c) I, II, and III (d) II and III only Correct answer is (c)

12 Examples of magnetic media include which of the following? Floppy disks Zip disks Hard disks

(a) I and II only (b) I and III only (c) II and III only (d) I, II, and III

Correct answer is (d)

13 Floppy disks typically hold about _____ of data, while hard disk drives typically hold several _____ of data (a) 10 MB, TBs (b) 1 MB, GBs (c) 1 MB, TBs (d) 100 KB, GBs

Correct answer is (b)

14 Of the following types of storage, which provides the fastest access to data? (a) RAM (b) CD-ROM

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Correct answer is (d)

15 Which of the following is (are) true regarding flash memory? It uses electronic charges for recording data.

It makes use of moving parts inside the chip for storing data. (a) None (b) I only (c) II only (d) I and II

Correct answer is (b)

16 Which of the following is true of hard disk drives?

(a) Their access times are generally twice as long as RAM access times. (b) They require power to retain information.

(c) They use magnetic material to store information. (d) Their capacity is currently measured in MB. Correct answer is (c)

17 Of the following, which best describes what happens when a user opens a document for editing?

(a) A copy of the document is loaded from the disk into cache memory and edited in the cache.

(b) The document image is directly edited on the disk where it resides. (c) The document image is moved to free space on the disk where the image is directly edited. (d) A copy of the document is loaded from the disk into RAM and edited in RAM. Correct answer is (d)

18 Which of the following is (are) true regarding floppy disks and Zip disks? Zip disks are capable of storing more data than floppy disks. Floppy disks transfer data more quickly than Zip disks. (a) None (b) I only (c) II only (d) I and II

Correct answer is (b)

19 Which of the following is (are) true regarding flash memory storage devices?

Flash memory storage devices are generally used in small devices like digital cameras and personal digital assistants.

CompactFlash and SmartMedia cards are examples of flash memory storage devices. (a) II only (b) I and II (c) None (d) I only

Correct answer is (b)

20 Of the following, which best describes what happens when a user opens a document for editing?

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(a) The document image is moved to free space on the disk where the image is directly edited. (b) A copy of the document is loaded from the disk into RAM and edited in RAM. (c) The document image is directly edited on the disk where it resides.

(d) A copy of the document is loaded from the disk into cache memory and edited in the cache. Correct answer is (b)

Multiple-Choice Quiz 7

1. Which of the following is a reason for degradation in computer system performance due to insufficient cache memory?

(a) It takes a longer time to transfer data from the peripheral devices to the chipset. (b) The processor performance will be less than optimal.

(c) It takes a longer time to transfer data from the hard disk to the cache. (d) Instructions have to be loaded frequently from the hard disk. Correct answer is (b)

2. How are data files compressed into shorter sequences of bytes?

(a) By replacing long sequences of identical data with a special coded format (b) By using higher density disk and RAM components

(c) By using higher speed disks, enabling them to be read back faster (d) By writing in the empty spaces between the sectors on a disk drive Correct answer is (a)

3. Which of the following areas of computer technology does Moore's Law impact in some way? Cost of software Processor speeds

Amount of RAM on a chip (a) I, II, and III (b) I and II only (c) I and III only (d) II and III only

Correct answer is (d)

4. If Moore's Law holds true for disk capacities and if the largest disk currently available is 10GB, what is predicted to be the largest disk capacity six years from now, assuming an 18 month cycle to double capacity? (a) 60 GB (b) 640 GB (c) 100 GB (d) 160 GB

Correct answer is (d)

5. What is the general term used to describe the process of recoding data so that it requires fewer bytes of storage space? (a) Encoding (b) Rationing

(d) Run length encoding Correct answer is (c)

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6. Which of the following create performance bottlenecks?

Disk access speed is too slow when compared to CPU processing speed. RAM access speed is too slow when compared to CPU processing speed.

Bus transfers to network cards and video cards are too slow when compared to CPU processing speed.

(a) I and III only (b) I and II only (c) I, II, and III

(d) II and III only Correct answer is (c)

7. Consumer demand for more powerful desktop computers continues to grow at a rapid pace, keeping up with the technological advances predicted by Moore's Law.

If a user purchased a state-of-the-art computer 18 months ago, what should such a user expect to pay for a computer today that is twice as powerful as the computer that is now 18 months old?

(a) Approximately the same amount of money paid for the old computer (b) Approximately twice the amount of money paid for the old computer (c) Approximately half the amount of money paid for the old computer

(d) Approximately three times the amount of money paid for the old computer Correct answer is (a)

8. According to Parkinson's Law of Data, additional memory (a) encourages the use of memory intensive techniques (b) requires the CPU to run programs faster (c) always requires additional RAM (d) results in decreased use of memory Correct answer is (a)

9. Which of the following kinds of files can be significantly compressed, while having little impact on the processing speed of other running applications when the compressed file data is accessed?

(a) Frequently used applications (b) Small binary files

10. In the future, continued technological advances that follow Moore's Law are (a) limited by the ability to shrink circuit paths to sizes smaller than an atom

(b) limited by the purity of silicon, iron, and copper used to make high quality semiconductors (c) limited by the availability of silicon from which to make high quality semiconductors (d) not limited and will continue on throughout the 21st century Correct answer is (a)

11. Which of the following is a reason for degradation in computer system performance due to insufficient RAM?

(a) It takes a longer time to transfer data from the hard disk to the cache. (b) Instructions have to be loaded frequently from the hard disk.

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(d) It takes a longer time to transfer data from the peripheral devices to the chipset. Correct answer is (b)

12. Why is it important to have large amounts of RAM in a computer system?

(a) You cannot load and execute a program unless there is sufficient RAM to hold all of a program's CPU instructions.

(b) Multitasking and large programs run slowly if there is insufficient RAM. (c) Programs cannot access files unless the entire file is first loaded into RAM. (d) RAM continues to be less expensive than hard disk memory. Correct answer is (b)

13. Which of the following is (are) true regarding bottlenecks that degrade the performance of a computer system?

Slow transfer of data between components in a system constitutes a bottleneck. A slow video card can constitute a bottleneck for graphics applications. (a) I and II (b) II only (c) None (d) I only

Correct answer is (a)

Multiple-Choice Quiz 8

1. Which of the following layers are contained within the software of an operating system? Device drivers Kernel BIOS

(a) I and III only (b) I, II, and III (c) II only

(d) I and II only

Correct answer is (d)

2. The file system of an operating system can easily work with files on diverse types of storage devices because

(a) device drivers hide the details involved with accessing storage devices from the operating system

(b) the API provides a consistent interface to the storage devices

(d) all physical storage devices operate basically the same way with respect to accessing data Correct answer is (a)

3. Which of the following could contain a Master Boot Record? Hard disk drive Floppy disk drive RAM

(a) II and III only (b) I and II only

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Correct answer is (b)

4. Which of the layers of software that make up a computer system provides applications with direct access to the operating system? (a) The API

(b) Device drivers (c) The BIOS (d) Scripts

Correct answer is (a)

5. How does the operating system support multiple applications running concurrently on a computer with a single CPU?

(a) The operating system creates an environment for the simultaneous execution of applications.

(b) The operating system quickly switches the CPU back and forth between applications. (c) The operating system contains accounts for multiple users.

(d) The operating system continues to run at the same time input/output devices are running. Correct answer is (b)

6. How would users benefit if the computer industry agreed on a standard for interfacing device drivers to operating systems?

(a) Only one device driver would be needed to communicate with all devices. (b) All operating systems supporting the standard could use the same device driver. (c) Device drivers would never have to be updated after they are installed. (d) Device drivers would require less software and take up less RAM. Correct answer is (b)

7. Which of the following steps are performed by the BIOS during the boot process? Locating a disk drive that has an operating system to be loaded

Loading the necessary device drivers needed by the operating system Loading into RAM the program to load the operating system (a) I, II, and III (b) I and III only (c) I and II only (d) II and III only

Correct answer is (b)

8. Device drivers facilitate communication between which layers of the system? (a) Applications and hardware devices (b) Different hardware devices

(d) The operating system and applications using hardware devices Correct answer is (c)

9. Which of the following services are provided by the BIOS? Orchestration of the initial boot process

Management of file creation and file deletion Basic support for devices such as the keyboard

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(a) I and III (b) I and II (c) I only (d) II only

Correct answer is (a)

10. Which of the following consequences are likely to happen when increasing the amount of time that each application can use the CPU, before the operating system preempts to allow another application to use the CPU?

A runnable process will have a greater amount of access to the CPU once it becomes a running task.

There will be fewer blocked processes.

Fewer processes can be multitasked by the operating system. (a) I only (b) I, II, and III (c) I and II only (d) II and III only

Correct answer is (a)

11. A computer has one floppy disk drive, labeled A, and two hard disks, labeled C and D.

Which of the following lists the drives in the order, first-to-last, that the BIOS would typically check during the boot process to find an operating system to load? (a) A:, C:, D: (b) D:, C:, A: (c) C:, A:, D: (d) A:, D:, C:

Correct answer is (a)

12. Which of the following are true about a context switch being performed by the operating system during multitasking?

It occurs whenever the CPU is switched to execute the instructions of a different task.

It needs to save the CPU's registers for a process, so at a later time it can resume processing where it left off.

In a system executing many tasks at once, it has little or no impact on system performance. (a) II and III only (b) I and II only (c) I and III only (d) I, II, and III

13. Which of the following are programs containing software instructions to be executed by the CPU? BIOS

Device driver Operating system (a) I and III only (b) I, II, and III (c) I and II only (d) II and III only

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Correct answer is (b)

14. The illusion of multitasking can be given by switching control of the CPU to a waiting task under which circumstance(s)?

A task controlling the CPU is waiting for user input from a device. A task controlling the CPU is performing output to a device.

A task has been in control of the CPU for longer than some predetermined maximum. (a) I and III only (b) I, II, and III (c) I only

(d) II and III only

Correct answer is (b)

15. Which of the following software layer sequences correctly represents the task of saving a file with a text editor?

(a) operating system, device driver, application, hardware (b) operating system, application, hardware, device driver (c) application, operating system, device driver, hardware (d) application, operating system, hardware, device driver Correct answer is (c)

16. Which of the following is not a reason why similar hardware products typically include their own device drivers to be installed on the system? (a) The hardware interface may be proprietary to a vendor. (b) The hardware interface on one vendor's product may support more functionality. (c) The operating system was released prior to the hardware product becoming available. (d) The new driver corrects problems that were discovered in the application's interface to the device driver. Correct answer is (d)

Multiple-Choice Quiz 9

1. Which of the following options in the Windows operating system can be used to improve aesthetics and convenience? Using the Control Panel

Using the View menu options in My Computer or Explorer

Changing the settings used by BIOS that control the PC's hardware configuration (a) I, II, and III (b) I and II only (c) I and III only (d) II and III only

Correct answer is (b)

2. A keyboard interrupt occur

(a) when the power supply is disconnected (b) each time a key is pressed

(d) only when the ENTER key is pressed Correct answer is (b)

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3. Which of the following operations cause(s) a fault to occur? The hardware is asked to do something it cannot do.

The memory's error correction circuitry detects an uncorrectable error. The program contains an illegal machine instruction. (a) II and III only (b) I, II, and III (c) III only (d) I only

Correct answer is (b) 4. A trap is triggered by (a) an external signal

(b) an attempt to access a non-existent memory location (c) a power surge

(d) the execution of processor instructions Correct answer is (d)

5. Which of the following is an example of an interrupt?

(a) A device indicates to the operating system that it has received input. (b) The CPU stops the operating system due to an internal error.

(c) Betty, a user, indicates to the operating system that she wants to stop an application. (d) An application informs the operating system that it has finished executing. Correct answer is (a)

6. Which of the following statements are true concerning interrupts? An interrupt causes the CPU to stop executing the application program. All devices are assigned the same priority and their interrupts are handled in the order in which they occur.

Interrupts are signals from devices that need immediate attention by the operating system. (a) I, II, and III (b) I and III only (c) I and II only (d) II and III only Correct answer is (b)

7. Within Windows, where can a user find applications for changing the operating system configuration? (a) Online help (b) File manager

8. What allows the Windows Startup Folder to be used to customize the operation of the computer system?

(a) It contains files to be deleted automatically by Windows after the system is booted. (b) It contains a list of programs for Windows to execute automatically after a user logs on. (c) It is a safe place to store personal documents created by applications.

(d) It contains the operating system files to be loaded during the boot process.

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Correct answer is (b)

Multiple-Choice Quiz 10

1. Which of the following is (are) true with respect to the implementation of virtual memory in a computer system?

A page fault occurs whenever the CPU tries to access an instruction or data not loaded into RAM. Virtual memory support is provided by the operating system and no special hardware support is required.

Excessive page faults can slow down access to other files on the disk. (a) I and III only (b) II only

Correct answer is (a)

2. Which of the following conditions cause the system to slow down due to page faults? The user is trying to run too many programs at the same time. The operating system is not using any virtual memory.

The system does not have enough RAM to handle all that is demanded of it. (a) I, II, and III (b) II and III only (c) I and III only (d) I and II only

Correct answer is (c)

3. Which of the following indicates to the operating system that an application is referencing data not currently loaded into RAM? (a) Page fault (b) Real mode interrupt (c) RAM interrupt (d) Relocation error Correct answer is (a)

4. Which of the following devices is (are) shared by concurrently running applications through the operating system? Keyboard Printer Processor (a) I, II, and III (b) I and II only (c) II only

(d) II and III only

Correct answer is (a)

5. Which of the following is (are) true of virtual memory and page faults?

A page fault occurs whenever a task refers to something that is in virtual memory but not in RAM.

A page fault always occurs whenever the operating system schedules a blocked task to start

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running.

Page faults can occur due to too many tasks executing or too little RAM within the computer. (a) I and III only (b) II only (c) I only

(d) II and III only Correct answer is (a)

6.How do applications that are running concurrently appear to share the monitor? (a) The scheduler determines which applications are allowed to write to a window. (b) There is no way to allow applications to share the monitor effectively.

(d) All running processes write to their respective windows appearing on the monitor. Correct answer is (d)

7.Which of the following are true regarding the use of virtual memory in a computer system? Virtual memory provides the illusion of more RAM than actually exists.

Excessive use of virtual memory by a computer system can slow overall performance. The CPU executes instructions directly from virtual memory. (a) II and III only (b) I and II only (c) I and III only (d) I, II, and III

Correct answer is (b)

Multiple-Choice Quiz 11

1. Which of the following structures is used by operating systems to describe to a user how files and folders, excluding shortcuts, are organized on a storage device? (a) a list (b) a tree (c) a matrix (d) a root

Correct answer is (b)

2. When a user creates a file, the user must provide it with a valid file name that adheres to specific rules, referred to as file-naming (a) conventions (b) policies (c) procedures (d) syntax

Correct answer is (a)

3. Which of the following is (are) true regarding the cluster size of a disk drive? A cluster is the smallest amount of space that a file can occupy in a disk. The cluster size will decrease as the size of the disk increases. (a) II only (b) I only

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Correct answer is (b)

4. Under Windows, creating a shortcut icon that points to another shortcut icon results in which of the following? (a) an error

(b) a copy of the original shortcut

(d) the creation of a copy of the target of the original shortcut Correct answer is (b)

5. Which of the following is (are) true regarding the New Technology File System? NTFS has built-in recoverability feature.

The cluster size varies in NTFS depending on the size of the disk. NTFS supports data access control and ownership privileges. (a) II and III only (b) I and II only (c) I, II, and III (d) I and III only

Correct answer is (c)

6. Which of the following are reasons for partitioning a physical disk drive into one or more logical disk drives? For file systems such as FAT16, smaller partitions use disk space more effectively. Partitioning a drive limits the size a file can grow to.

If the file system is FAT16 and the drive is larger than 2GB, partitioning the drive is necessary to make the entire drive accessible. (a) I, II, and III (b) II and III only (c) I and II only (d) I and III only

Correct answer is (a)

7. Which of the following is true about the names of files and subfolders that reside in the same folder?

(a) Names must always include an extension. (b) Names must always start with a capital letter. (c) Names must be unique within that parent folder.

(d) Names must be unique within the entire disk or partition. Correct answer is (c)

8. The type of data contained within a file in Windows is indicated by the _____ of the file. (a) attributes (b) parent folder (c) content (d) extension

Correct answer is (d)

9. A file could contain which of the following?

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A document Digitized sounds Digital video (a) II and III only (b) I, II, and III (c) III only (d) I only

Correct answer is (b)

10. Which of the following are true about the presence of hierarchical file systems within an operating system?

Hierarchical file systems require all files to be stored in a directory. Hierarchical file systems make it easier for users to organize files.

Hierarchical file systems require that all files and subfolders in a given folder have names that are unique.

(a) II and III only (b) I and II only (c) III only

(d) I, II, and III

Correct answer is (d)

11.Consider a sector in a disk that is only partially filled with data. The unused portion of the sector is known as (a) free space (b) non-data space (c) empty space (d) slack space Correct answer is (d)

12. In Windows 9x/Me/XP/NT/2000, which of the following characters are allowed in file names? ? / *

(a) III only (b) II only (c) None (d) I only

Correct answer is (c)

Multiple-Choice Quiz 12

1. A copyright is a form of legal protection that exclusively grants the copyright owner which of the following rights with regard to the copyrighted software? Copying

Distributing or selling Modifying (a) II only (b) I and II only

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(d) II and III only Correct answer is (c)

2. A software _____ may extend the rights given by copyright laws. (a) trademark (b) warranty (c) copyright (d) license

Correct answer is (d)

3. Software is classified as _____ software if the only reason it is needed is to run a computer. (a) public domain (b) application (c) shareware (d) system

Correct answer is (d)

4. Which of the following types of licenses usually allows use of the software for a trial period? (a) Open source software (b) Application software (c) Freeware (d) Shareware

Correct answer is (d)

Multiple-Choice Quiz 13

1. Which of the following applications, if integrated with an email client application, would provide the greatest convenience to a user? (a) A spreadsheet application (b) A personal finance application (c) An address book application (d) A drawing application Correct answer is (c)

2. Which of the following is an appropriate type of application for creating a rough blueprint of a home improvement project? (a) Presentation (b) Drawing (c) Database (d) Painting

Correct answer is (b)

3. Which of the following sets of applications is the most appropriate to use for creating printed annual reports to stockholders?

(a) Animation, photo editor, spreadsheets

(b) Word processing, animation, sound synthesis (c) Word processing, spreadsheets, sound synthesis (d) Word processing, spreadsheets, graphics Correct answer is (d)

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4. Groupware facilitates group (a) printer use (b) Web use

Correct answer is (c)

5. Which of the following is an error that is highly unlikely to happen when using checkbook software, as opposed to using paper and a calculator? (a) A calculation error (b) A lost checkbook (c) Missing input (d) Wrong input

Correct answer is (a)

3. Applications that are designed to work together to create complex documents containing different types of data are referred to as (a) groupware (b) consolidated (c) an office suite (d) utilities

Correct answer is (c)

Multiple-Choice Quiz 14

1. Which of the following is (are) true regarding the use of a batch file? It performs a set of commands frequently typed in by a user. It performs a set of commands that are selected from a GUI using a mouse. It performs a set of commands after hours that do not require user input. (a) I and III only (b) III only (c) I and II only (d) I, II, and III

Correct answer is (a)

2. Batch files and scripts are easy to create and modify because they are (a) commented, making them easy to understand (b) compiled using a program tool

(d) written in binary instruction code for the CPU Correct answer is (c)

3. Under Windows, what extension is used for files that contain a sequence of predefined commands to the operating system? (a) .exe (b) .com (c) .txt (d) .bat

Correct answer is (d)

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4. Which of the following is not true regarding the use of Standard Input and Standard Output logical devices in a command line?

(a) Programs written to use the Standard Input and Standard Output logical devices do not need to be rewritten to direct their output to the printer instead of the display.

(b) A change to the Standard Output device remains in effect for all subsequent commands entered from the keyboard.

(d) Standard Output can be mapped to a file that receives output of importance to a user for a command or a program. Correct answer is (b)

5. What is the purpose of a switch in a command-line interface? (a) It specifies a group of files that are affected by the command.

(b) It specifies a change to the normal function of a specified command. (c) It allows two commands to be included in a single command line. (d) It tells the command processor what command to execute. Correct answer is (b)

6. Which of the following is (are) true regarding the use of Standard Input and Standard Output logical device facilities provided through an operating system's command line interface? Use > abc.txt to change the Standard Output logical device to be the file abc.txt. Use << abc.txt the change the Standard Input logical device to be the file abc.txt.

Use the | character between two commands, allowing the output of the first to be used as input for the second. (a) I, II, and III (b) I and III only (c) I and II only (d) I only

Correct answer is (b)

7. Batch files and scripts are analogous to which of the following in applications? (a) Templates (b) Files

Correct answer is (d)

Multiple-Choice Quiz 15

1. Which of the following is (are) true of a database?

A database can contain a variety of different record formats. Each database can have only one record format.

A database consolidates flat files into a single collection of diverse information. (a) II and III only (b) I and III only (c) I only (d) II only

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Correct answer is (b)

2. A person, place, thing, or event about which data is stored is called a(n) (a) entity (b) string (c) key

(d) record

Correct answer is (a)

3. In a database application, data is organized into which of the following? (a) Fields and records, which can be used interchangeably (b) A collection of unrelated fields

(d) Records, which form the smallest unit of data manipulated by a database Correct answer is (c)

4. What contains the smallest unit of meaningful data in a data file? (a) Field (b) Index (c) Key (d) Type

Correct answer is (a)

5. File management software adapts to different files because of a concept called data (a) independence (b) indexing (c) input (d) sorting

Correct answer is (a)

6. A file contains _____ that are made up of fields. (a) items (b) types (c) records (d) bits

Correct answer is (c)

7. Each field in a database record has a field _____ that identifies its contents. (a) structure (b) nomenclature (c) name (d) item

Correct answer is (c)

8. What contains fields of data about one entity? (a) Key (b) Record (c) Entity (d) String

Correct answer is (b)

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Multiple-Choice Quiz 16

1. Who of the following plans an entire information system? (a) Programmer (b) Systems analyst

2. An algorithm can be performed by following the (a) protocols (b) instructions (c) standards (d) characters

Correct answer is (b)

3. What type of language allows a programmer to use instructions that are more like human language, such as the BASIC command PRINT \ (a) Register (b) RAM (c) Scripting (d) High-level

Correct answer is (d)

4. Who of the following focuses on the software component of an information system, including software design, programming, and testing? (a) Software engineer (b) Database administrator (c) Systems analyst (d) Systems administrator Correct answer is (a)

5. What is a subset of the English language with a limited selection of sentence structures that reflect processing activities? (a) Pseudocode (b) Smalltalk

Correct answer is (c)

6. Software _____ refers to the process of developing software using systematic mathmatical, engineering, and management techniques. (a) algorithm creation (b) design

7. Which of the following indicates the proper sequence (from first to last) of four processes of software development?

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(a) Define, plan, code, evaluate (b) Plan, define, code, evaluate (c) Define, plan, evaluate, code (d) Code, define, evaluate, code Correct answer is (a)

8. Which of the following is true about the practice of having programmers present their solutions to a team of programmers? (a) It is an example of a code review.

(b) It is a desirable practice, but it rarely occurs in the software industry.

(d) Even though this practice is often required by large companies, it is usually counter-productive to the software development process. Correct answer is (a)

9. Which of the following are programs commonly found in an integrated software development environment? Compilers Spreadsheets Debuggers (a) I, II, and III (b) I and II only (c) I and III only (d) II and III only Correct answer is (c)

10. Which of the following are benefits of using high-level languages for programming? They allow the use of instructions that are more like human language. They can significantly reduce programming errors. They allow programs to be written in less time. (a) I and III only (b) I, II, and III (c) I and II only (d) II and III only

Correct answer is (b)

11. Which of the following are likely to be determined because of teams of designers evaluating systems that are currently released and installed at customer sites? New features required to extend the systems' functionality

Existing features that need to be enhanced with additional functionality Improvements that can be made to the user interfaces (a) I, II, and III (b) I and II only (c) II and III only (d) I and III only

Correct answer is (a)

12. Which of the following is typically true of a programmer in large-scale software projects?

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(a) The programmer selects a language and starts the process of decomposing the program. (b) The programmer solicits requirements from focus groups of potential users.

(c) The programmer makes decisions about how to implement specifications for pieces of programs and writes code for them.

(d) The programmer first builds a set of propositions that allow for unambiguous proofs that the resulting software is correct. Correct answer is (c)

13. In the programming phase of the software development process, which process translates the human-readable programming language instructions into machine-readable instructions for a specific type of CPU? (a) Linking (b) Execution (c) Loading

(d) Compilation

Correct answer is (d)

14. When creating a program, syntax errors are detected by which of the following? (a) Linkers (b) Debuggers (c) Compilers (d) Word processors Correct answer is (c)

15. The commands that you write in a high-level language are referred to as _____ code. (a) source (b) object (c) language

(d) operational

Correct answer is (a)

16. In the programming phase of the software development process, which process translates the human-readable programming language instructions into machine-readable instructions for a specific type of CPU? (a) Compilation (b) Execution (c) Loading (d) Linking

Correct answer is (a)

16. What kind of language is useful when a programmer needs to manipulate what happens at the hardware level directly? (a) Device (b) Low-level (c) Scripting (d) High-level

Correct answer is (b)

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Multiple-Choice Quiz 17

1. If a MIME designation in a file attached to an email has the name \email reader interprets this to mean which of the following?

(a) The file is a text file that should be interpreted by a client application that understands HTML information.

(b) The file contains text-based information, requiring the use of a text editor. (c) The HTML program file in the text folder should be used to interpret this file. (d) The file should be saved to the client's disk using the name \ Correct answer is (a)

2. Embedding different types of data, such as sound and graphics, within Internet electronic mail requires which of the following formats to be used for encoding the data? (a) MIME (b) TCP/IP (c) Encryption (d) GIF

Correct answer is (a)

3. Which of the following correctly characterizes the part of the email address after the @ (the \

(a) The computer name of the recipient's computer (b) The Web server of the recipient (c) The IP address of the recipient's computer (d) The email server name on which the recipient has an account Correct answer is (d)

4. Web page URLs begin with (a) page:// (b) www:// (c) url:// (d) http://

Correct answer is (d)

Multiple-Choice Quiz 18

1. The numbers in IP addresses are separated by (a) exclamation points (b) colons (c) periods (d) commas

Correct answer is (c)

2. An IP address is a set of four numbers between 0 and (a) 128 (b) 16 (c) 255 (d) 24

Correct answer is (c)

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3. What top-level domain belongs to computers in the category of professional and nonprofit organizations? (a) edu (b) npo (c) org (d) com

Correct answer is (c)

4. What top-level domain belongs to computers in the category of commercial businesses? (a) bus (b) bsn (c) org (d) com

Correct answer is (d)

5. ISPs can be accessed by which of the following ways? Telephone lines

Cable television systems Personal satellite dishes (a) I, II, and III (b) II only (c) I and II only (d) I only Correct answer is (a)

6. What knits the Internet together and allows data to travel smoothly over the communications links provided by NSPs worldwide? (a) HTTP (b) TCP/IP (c) FTP (d) URL

Correct answer is (b)

7. Networks typically use _____ cable. (a) coaxial (b) twisted pair (c) NIC

(d) wireless

Correct answer is (b)

8. What networks are useful in environments where wiring is difficult to install? (a) Wireless (b) Wirefree (c) Coaxial

(d) Twisted pair

Correct answer is (a)

9. What top-level domain belongs to computers in the category of networks and ISPs? (a) net (b) adm

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Correct answer is (a)

Multiple-Choice Quiz 19

1. Which of the following components are required for an email system? Email server software Post office software Email client software (a) II and III only (b) I and II only (c) I, II, and III (d) I and III only

Correct answer is (d)

2. Which of the following is (are) true about a server in a client-server system?

The server accepts requests from clients, performs some function, and returns the results. A Web server is needed to host a website.

Servers do not normally run user programs, so they are more likely to be reliable and stable. (a) III only (b) I and II only (c) I only

(d) I and III only

Correct answer is (b)

3. A browser that receives and processes a Java applet is an example of a (a) forwarding client (b) thin client (c) store-and-forward technology (d) thick client

Correct answer is (d)

4. When you send an email to someone, it is sent to (a) the sender's email client (b) the recipient's email server (c) the sender's email server (d) the recipient's computer Correct answer is (b)

5. Which of the following are valid examples of client-server systems on the Internet? Reading messages on a newsgroup application

Reading and sending email messages through an email application Receiving Web pages through a browser application (a) I, II, and III (b) II and III only (c) I and III only (d) I and II only

Correct answer is (a)

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Your score on this question is: 25.00

6. Which of the following is (are) true about thick and thin clients in a client-server system? Thin clients perform relatively little work. A Web browser is an example of a thick client.

A handheld computer is a typical example of a thin client. (a) I, II, and III (b) I only (c) III only

(d) I and III only

Correct answer is (d)

Multiple-Choice Quiz 20

1. Which of the following is a service that transports data digitally over dial-up or dedicated telephone lines. (a) Demodulation (b) ISDN

Correct answer is (b)

2. Effective communication depends on the efficiency of the coding process and the channel's resistance to electrical interference called (a) noise (b) waveforms (c) receiver flow (d) parity

Correct answer is (a)

3. Which of the following connections uses shared bandwidth, resulting in reduced speeds when a large number of users are online? (a) T1 (b) ISDN

(d) Telephone modem Correct answer is (c)

4. What signals typically represent an unlimited range of values and have a smooth curved waveform? (a) Hertz

(b) Wavelength (c) Digital (d) Analog

Correct answer is (d)

5. Modems transfer data between computers by converting between (a) Ethernet and digital (b) analog and digital (c) video and sound

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尊重他人的劳动成果是一种美德

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