Subnet Masks

Question 1

Class A IP addr range and subnet mask:

Answer 1

(0-126)

255.0.0.0

Question 2

Class C IP addr range and subnet mask:

Answer 2

(192-223)

255.255.255.0

Question 3

Class B IP addr range and subnet mask

Answer 3

(128-191)

255.255.0.0

Question 4

Attributes of a Network ID?

Answer 4

Beginning number in subnet range;
Always even;
Official designation for particular subnet

Question 5

Attributes of a Broadcast ID

Answer 5

Ending number in a subnet range;
Always odd;
All devices on subnet listen to this address

Question 6

How is a subnet’s size referenced?

Answer 6

Network ID and subnet mask

Question 7

Subnet mask:

Answer 7

Masks out host bits leaving network ID that begins the subnet;
Determines subnet size;
Identifies subnet endpoints;
If beginning ID (network ID) and subnet size is known, the ending ID (broadcast ID) can be determined