IGNOU Assignment Answers and free solutionsCategory: AssignmentExplain the concept of DNS. Explain the components of an IP address
Amit Kumar Staff asked 1 year ago

Explain the concept of DNS. Explain the components of an IP address with the help of an example. What is the significance of network mask? Explain with the help of an example.

1 Answers
Amit Kumar Staff answered 12 months ago

Domain Name System (DNS) should keep track of address of each computer or any other internet device and email addresses. The name servers translate the web address or email address to respective IP address. This means that DNS maps an IP address to a name that can be accessed by this name over the network.
Network masking is used to define the group of computer that belongs particular IP classes.

Network masking is used to define the group of computer that belongs particular IP classes.

 

Class-A :

Net ID
Host ID
Host ID
Host ID

Range of first Byte
1 to 127*

Subnet Mask
255
0
0
0

 

Class-B :

Net ID
Net ID
Host ID
Host ID

Range of first Byte
128 to 191

Subnet Mask
255
255
0
0

 

Class-B :

Net ID
Net ID
Net ID
Host ID

Range of first Byte
192-223

Subnet Mask
255
255
255
0