640-821無料問題集「Cisco Introduction to Cisco Networking Technologies」

質問 1

What is the subnet address of 172.16.159.159/22?

（A）172.16.156.0

（B）172.16.128.0

（C）172.16.159.128

（D）172.16.0.0

（E）172.16.159.0

（F）172.16.192.0

正解：A 解答を投票する

質問 2

Refer to the output of the three router commands shown in the exhibit.A new technician has been told to add a new LAN to the company router. Why has the technician received the error message that is shown following the last command?

（A）The router does not support LAN interfaces that use Ethernet.

（B）The interface was already configured.

（C）The command was entered from the wrong prompt.

（D）The interface type does not exist on this router platform.

（E）The IOS software loaded on the router is outdated.

正解：D 解答を投票する

質問 3

If a host on a network has the address 172.16.45.14/30, what is the address of the subnetwork to which this host belongs?

（A）172.16.45.8

（B）172.16.45.0

（C）172.16.45.4

（D）172.16.45.12

（E）172.16.45.16

正解：D 解答を投票する

質問 4

A network administrator is connecting PC hosts A and B directly through their Ethernet interfaces as shown in the graphic. Ping attempts between the hosts are unsuccessful.
What can be done to provide connectivity between the hosts? (Choose two.)

（A）A default gateway needs to be set on each host.

（B）A crossover cable should be used in place of the straight-through cable.

（C）The subnet masks should be set to 255.255.255.192.

（D）The subnet masks should be set to 255.255.255.0.

（E）The hosts must be reconfigured to use private IP addresses for direct connections of this type.

（F）A rollover cable should be used in place of the straight-through cable

正解：B、D 解答を投票する

質問 5

What command will disable CDP on a router interface?

（A）router(config-if)# no cdp

（B）router(config-if)# no cdp enable

（C）router(config-if)# no cdp run

（D）router(config-if)# no cdp active

正解：B 解答を投票する

質問 6

Refer to the exhibit. What is needed to allow host A to ping host B?

（A）a router connected to the switches with straight-through cables

（B）a CSU/DSU connected to the switches with straight-through cables

（C）a backbone switch connecting the switches with either fiber optic or straight-through cables

（D）a straight-through cable connecting the switches

（E）a crossover cable connecting the switches

正解：A 解答を投票する

質問 7

Host A needs to communicate with the email server shown in the graphic. What address will be placed in the destination address field of the frame when it leaves Host A?