Cisco Router Configuration

Question 1

How to display a summary of IPv4 interfaces IP addresses on R1?

Answer 1

R1# show ip interface brief

Question 2

How to display the Layer 2 to Layer 3 mapping of addresses on R1?

Answer 2

R1# show ip arp

Question 3

How to display the IPv6 routing table on R1?

Answer 3

R1# show ipv6 route

Question 4

How to display the running configuration on R1?

Answer 4

R1# show running-config

Question 5

How to disable an inactive privileged exec mode access after 5 minutes 45 seconds on R1?

Answer 5

R1(config)# line vty 0 15
R1(config-line)# exec-timeout 5 45

Question 6

How to block anyone for 3 minutes who fails to log in after 5 attempts within a 2-minute period on R1?

Answer 6

R1(config)# login block-for 3 attempts 5 within 2

Question 7

Give one main reason why IPv4 is being replaced by IPv6.

Answer 7

IPv4 has limited address space, and IPv6 provides a larger and more scalable address space, essential for the growing number of connected devices.

Question 8

What does the command ‘exit’ do?

Answer 8

Function: The ‘exit’ command is used to exit the current configuration mode and move to the previous mode. If used in the global configuration mode, it takes the user back to privileged EXEC mode.