CCNA第一学期Final - exam考试英文版答案(R&S 5.0)B

1、A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?

LAN MAN WAN

WLAN

2 A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?

DSL

dial-up

satellite

cell modem

cable modem

3 How does quality of service help a network support a wide range of applications and services?

by limiting the impact of a network failure

by allowing quick recovery from network failures

by providing mechanisms to manage congested network traffic

by providing the ability for the network to grow to accommodate new users

4 On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?

FastEthernet0/1

VLAN 1 vty 0

console 0

5 After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

The new configuration will be stored in flash memory.

The new configuration will be loaded if the switch is restarted.

The current IOS file will be replaced with the newly configured file.

The configuration changes will be removed and the original configuration will be restored.

6

Refer to the exhibit. A network

administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?

letmein

secretin

lineconin

linevtyin

7 Which connection provides a secure CLI session with encryption to a Cisco switch?

a console connection

an AUX connection

a Telnet connection

an SSH connection

7 Which connection provides a secure CLI session with encryption to a Cisco switch?

a console connection

an AUX connection

a Telnet connection

an SSH connection

9 What function does pressing the Tab key have when entering a command in IOS?

It aborts the current command and returns to configuration mode.

It exits configuration mode and returns to user EXEC mode.

It moves the cursor to the beginning of the next line.

It completes the remainder of a partially typed word in a command.

10 What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?

TCP IP HTTP

Ethernet

11 What layer is responsible for routing messages through an internetwork in the TCP/IP model?

internet

transport

network access session

12 Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?

Data is sent from the internet layer to the network access layer.

Packets are sent from the network access layer to the transport layer.

Segments are sent from the transport layer to the internet layer.

Frames are sent from the network access layer to the internet layer.

13 What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network?

host address

IP address

MAC address

network address

14 A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

presentation layer

network layer

physical layer

data link layer

15 A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

the amount of traffic that is currently crossing the network

the sophistication of the encapsulation method applied to the data

the type of traffic that is crossing the network

the latency that is created by the number of network devices that the data is crossing

the bandwidth of the WAN connection to the Internet

the reliability of the gigabit Ethernet infrastructure of the backbone

16 Which procedure is used to reduce the effect of crosstalk in copper cables?

requiring proper grounding connections

twisting opposing circuit wire pairs together

wrapping the bundle of wires with metallic shielding

designing a cable infrastructure to avoid crosstalk interference

avoiding sharp bends during installation

17 What is a characteristic of the LLC sublayer?

It provides the logical addressing required that identifies the device.

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