1-12 INTRODUCTION TO SUBNETTING

Question 1

What is subnetting?

Answer 1

The process of dividing a larger network into subnetworks or subnets for more efficient utilization of IP addresses and to isolate broadcast domains in a network.

Question 2

What is a Class C private IP address’s default subnet mask?

Answer 2

24 bits or 255.255.255.0

Question 3

Given the IP address 192.168.0.10 and subnet mask 255.255.255.0, what is the Network ID?

Answer 3

192.168.0.0

Question 4

Given the IP address 192.168.0.10, what is the Node ID?

Answer 4

.10

Question 5

What cannot the node portion of an IP address be all binary O’s?

Answer 5

It is reserved for the Network ID.

Question 6

What cannot the node portion of an IP address be all binary 1’s?

Answer 6

It is reserved for the network’s broadcast address.

Question 7

How can we divide the network 192.168.0.0/24 into smaller subnets?

Answer 7

By turning any of the bits in the last octet into network bits.

Question 8

What is the result of adding 1 bit to the node portion?

Answer 8

2 networks and 126 nodes.

Question 9

What is the result of adding 2 bits to the node portion?

Answer 9

4 networks and 62 nodes.

Question 10

What is the result of adding 3 bits to the node portion?

Answer 10

8 networks and 30 nodes.

Question 11

What is the result of adding 4 bits to the node portion?

Answer 11

16 networks and 14 nodes.

Question 12

What is the result of adding 5 bits to the node portion?

Answer 12

32 networks and 6 nodes.

Question 13

What is the result of adding 6 bits to the node portion?

Answer 13

64 networks and 2 nodes.