Computer Networks Answers

a) What is CIDR ? Why do we use classless instead of classful in ip subnetting ?

b) Describe the differences between CIDR 200.23.16.0/23 and 200.23.16.0/24

a) What are the differences between Network layer and Transport layer, in terms of logical communication.

b) Describe the definition of routing and forwarding in ip routing algorithms.

c) What is DHCP ? 

Assuming a message “Exams!” is to be transmitted over a network. If the message is made up of strings with the given probability: e = 0.4, x = 0.1, a = 0.2, m = 0.1, s = 0.1, and ! = 0.1, derive:

a. The codeword using Arithmetic coding procedures

b. The original message by decoding the codeword in (a).

Assuming a message “Exams!” is to be transmitted over a network. If the message is made up of strings with the given probability: e = 0.4, x = 0.1, a = 0.2, m = 0.1, s = 0.1, and ! = 0.1, derive:

a. The codeword using Arithmetic coding procedures

b. The original message by decoding the codeword in (a).

Program code of initial name 'G' using gotoxy and for loop

Fill in the blanks in the following statements:

3-Three media access control methods used by logical multiaccess topologies include 1-----------2- ----------------- 3---------------.

4-Data link layer rules (also called ----------) specify the media access control method that is used for a particular ------------ For example, Ethernet uses -------------.

5-The ----------layer refers to the---------------------cache to determine the Media Access Control (MAC) address that is associated with the Ethernet interface on the client’s router. The client builds an ---------------frame to transport the IPv4 packet across the local medium.

6-The server compares the ------------ MAC address in the frame to the MAC address of the -------- in the server. Because it matches, the server removes the ---------------header and pushes the packet up to the -------------- layer.

7-The server examines the frame. It checks the ----------- to determine if the frame was received intact without any ----------.

Explain, What is E-banking and its advantages?

What are the tools you experienced in E-Commerce?

How you can benefit from E-Commerce?

How can education technology improve learning?