Explain the concept of DNS. Explain the components of an IP address
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.
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