World of Computer Networking Your CCNA start - Classless Inter Domain Routing (CIDR)

The video tutorial introduces classless interdomain routing (CIDR), explaining its significance in modern computer networks. It covers the traditional IP address classes and their default masks, highlighting the limitations of these defaults. The tutorial then delves into subnetting and how CIDR allows for more flexible routing by using specific network prefixes and masks. Examples of CIDR in routing tables are provided, demonstrating how subnetworks are created and managed. The concept of route aggregation is introduced, explaining how it optimizes network efficiency by summarizing multiple routes.

What is the primary reason for moving away from default masks in modern routing?

• To increase the number of available IP addresses

• To simplify the routing process

• To allow for more efficient use of IP addresses

• To reduce the number of routers needed

In CIDR, what does a routing table entry consist of?

• Only a network prefix

• Only a network mask

• A network prefix and a default class

• A network prefix and a mask

How many hosts can a network with a mask of 28 accommodate?

• 14 hosts

• 16 hosts

• 30 hosts

• 32 hosts

What is the purpose of route aggregation in CIDR?

• To increase the number of routes

• To reduce the number of routes

• To increase the number of hosts

• To reduce the number of hosts

What does CIDR stand for?

• Classful Interdomain Routing

• Classless Interdomain Routing

• Classful Internet Routing

• Classless Internet Routing