Exercise on Networks and Communications

1.  

Define and briefly explain the following terms related to the Internet and Communication.

a)   URL

b)  HTTP

c)   SMTP

d)  DNS

e)   Ipv4

2.  

A computer is trying to communicate the text ‘Hello’ to another computer. Using this example, describe how even parity checking works. You may want to use the original (non-extended) ASCII character codes. The ones you need here are the following:

H

e

l

o

0100 1000

0110 0101

0110 1100

0110 1111

3.  

This question is about communication tools.

a)   Give two examples of web browsers.

b)  State the term given to the 32-bit binary number that identifies a computer on a network.

c)   What is the difference between the HTTP and HTTPS protocols?

d)  Name one advantage and one disadvantage of email compared to traditional mail.

e)   State one incoming and one outgoing email protocol.

4.