CCNA-Mid-Exam-Batch-9th

How long is an IPv6 address?

• 32 bits

• 128 bytes

• 64 bits

• 128 bits

As a Network Admin ,what is the subnet mask that allow 510 hosts given the ip address 172.30.0.0 ?

• 255.255.0.0

• 255.255.248.0

• 255.255.252.0

• 255.255.255.0

• 255.255.254.0

To back up an IOS, what command will you use?

• backup IOS disk

• copy ios tftp

• copy tftp flash

• copy flash tftp

Which of the following commands will allow you to set your Telnet password on a Cisco router?

• line telnet 0 4

• line aux 0 4

• line vty 0 4

• line con 0

Where is a hub specified in the OSI model?

• Session layer

• Physical layer

• Data Link layer

• Application layer

Which protocol is used to send a destination network unknown message back to originating hosts?

• TCP

• ARP

• ICMP

• BootP

Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router?

172.16.1.100

172.16.1.198

172.16.2.255

172.16.3.0

• 1 only

• 2 and 3 only

• 3 and 4 only

• None of the above

What does the command routerA(config)#line cons 0 allow you to perform next?

• Set the Telnet password

• Shut down the router.

• Set your console password.

• Disable console connections

Which class of IP address has the most host addresses available by default?

• A

• B

• C

• A and B

which password is automatically encrypted when it is created ?

• vty

• Aux

• console

• enable secret

• enable password