IT Networking and Communication.

Running head: IT NETWORKING AND COMMUNICATION
IT NETWORKING AND COMMUNICATION
Name of the Student
Name of the University
Author Note

1IT NETWORKING AND COMMUNICATION
Discussions
1. IPv4 addressing utilises the idea of classes. This structural design in Ipv4 is known as
classful addressing. The classes are divided into 5 classes in the classful addressing in
which the space of address in A,B,C,D and E. All the classes takes some fraction of the
gap of address. In the classful addressing, the IP address is split into host ID and network
ID.
The classful addressing leads to depletion of address. It is a very big problem for this and
it is not used these days due to these reasons. In order to overcome the issue of depletion and
to provide the organizations more admission to the Internet. The classless addressing are used
in which there are no classes however, the addresses are arranged in blocks. It allows the use
of subnet mask that are of variable length and various subnet mask are used in the similar
network.
2. A block in the address of class A is very large for most of the companies. This means that
most of the addresses in class A are exhausted and they are not used. A class A subnet has
total of 24 bits importance of addressing and that is sufficient for almost 17 million entity
devices. Most of the units have only a small portion of this amount of devices. Therefore,
most of the addresses are not utilised.
The class C have only 8 bits for the host address thus, restricting the number of devices to
256. Therefore, many organizations do not use class C addressing due to this reason.
3. A mask is a 32-bit binary number that provides the address of the network in the block of
address when the AND operation is applied bitwise on the mask and any IP address of the
block. The mask that is default in various classes is Class A- 255.0.0.0, Class B-
255.255.0.0.

2IT NETWORKING AND COMMUNICATION
A subnet mask hides the network part of the Internet Protocol address of the computer
system and then leaves only the host part as the identifier of the machine. It utilises the
similar format as an IPv4 address.
4. An address of network is an identifier for a host or a node on a network of
telecommunications. The address of network is designed to be distinctive identifiers
across the network. Some of the networks permit private or local addresses or addresses
that are locally administered that may not be distinct.
Given an IP address 132.6.7.85 and the default Class B mask. The address of network can
be found out from the IP address. The default mask is 255.255.0.0 that means only the first 2
bytes are conserved and the other two bytes that are present are put to 0. Therefore, the
address of the network is 132.6.0.0.
5. Subnetting is a strategy that is utilised in order to panel a physical network that is single
into one or more than one sub-networks that are logical and that are smaller. An IP
address consists of a segment of network and a host segment.
A subnet mask is a number that refers to a range of addresses of IP that can be utilised in
a network. A subnet mask masks, the network part of an IP address of a system and then
leaves only the host part as the identifier of the machine. A common subnet mask for IP
address of Class C is 255.255.255.0.
Most of the networks that are used at home use the default mask of 255.255.255.0. Large
networks with many machines can use subnet masks of 255.255.0.0. This is the subnet mask
that is default and it utilised by networks of class B it gives up to IP addresses of 65,536.
6. The Network Address Translation is the procedure in which a device of network that is
commonly a firewall, assigns an address that is public to a system of computer and that is