Chapter 4 Exam Essentials

Question 1

Identify the advantages of subnetting.

Answer 1

Benefits of subnetting a physical network include reduced network traffic, optimized network performance, simplified management, and facilitated spanning of large geographical distances.

Question 2

Describe the effect of the ‘ip subnet-zero’ command.

Answer 2

This command allows you to use the first and last subnet in your network design.

Question 3

Describe the role of a subnet mask in IP addressing.

Answer 3

A subnet mask is a 32-bit value that allows the recipient of IP packets to distinguish the network ID portion of the IP address from the host ID portion of the IP address.

Question 4

Explain the impact of Classless Inter-Domain Routing (CIDR).

Answer 4

CIDR allows the creation of networks of a size other than those allowed with the classful subnetting by allowing more than the three classful subnet masks