Jeremy's IT Labs IPv4 Addressing (Part 2) Day 8

Display the configured description of each interface on a router:

R1# [...]

show interfaces description

Command to configure a description on an interface:

R1(config-if)# [...]

description description

ie.

R1(config-if)# description ## to SW1 ##

Command to configure an IP address on an interface:

R1(config-if)# [...]

ip address ip-address subnet-mask

ie.

R1(config-if)# ip address 192.168.0.254 255.255.255.0

If an interface has the shutdown command applied to it, what will the 'status' column of show ip interface brief display?

administratively down

Interfaces on Cisco [device type] are administratively down by default.

routers

Interfaces on Cisco [device type] are NOT administratively down by default.

switches

The '[...]' field of the show ip interface brief command shows the Layer 1 status of the interface.

Status

The '[...]' field of the show ip interface brief command shows the Layer 2 status of the interface.

Protocol

The 'Protocol' field of the show ip interface brief command shows the Layer [...] status of the interface.

2

The 'Status' field of the show ip interface brief command shows the Layer [...] status of the interface

1

What is the formula to calculate the maximum number of hosts in a network?

(2^n)-2

(n = number of host bits)

Which IPv4 address class allows a total of 16,777,214 hosts per network?

Class A

Which IPv4 address class allows a total of 254 hosts per network?

Class C

Which IPv4 address class allows a total of 65,534 hosts per network?

Class B

Which IPv4 address class contains a total of 128 networks?

Class A

Which IPv4 address class contains a total of 16,384 networks?

Class B

Which IPv4 address class contains a total of 2,097,152 networks?

Class C