Assignment No. 01 Semester: Spring 2009 IT430 E-Commerce

Assignment No. 01
Semester: Spring 2009
IT430 E-Commerce

Question No. 1: [5 Marks]
Why do we need protocols in computer networks? Discuss in your own words.

Solution:

Protocols are used for communication. These are set of pre define rules that are used for communications. Just like in over every day life we use some language to communicate , in the similar manner network devices need some language using which they can transfer data.

A network protocol defines rules and conventions for communication between network devices.
Network protocols include mechanisms for devices to identify and make connections with each other, as well as formatting rules that specify how data is packaged into messages sent and received.


Question No. 2: [5 Marks]

In internet IP Version 4 is going to be replaced by IP Version 6, discuss the major factor behind this change.

Solution:

The main reason of migrating from IPv4 to IPv6 is Address Space i.e. number of address supported by IPv4 are 4 Billion Addresses, i.e. 4 Billion devices can have unique address in internet.

But as number of online devices (computers which needed have a unique IP address) are growing day by day, so IPv4 was running out of the address.

IPv6 supports 2^128 Address which will enough to provide the address to computers or devices in the future.