C- Issues Relating To Transmission Of Data

Question 1

Why are protocols useful?

Answer 1

They are essential to allow systems to communicate

Question 2

What protocol is used to retrieve mail from a server by mail client?

Answer 2

Post office protocol POP3

Question 3

What is the protocol which is used to transmit mail to a server?

Answer 3

Simple mail transfer protocol SMTP

Question 4

What protocol is used to access mail on a remote server by mail client?

Answer 4

Internet message access protocol IMAP

Question 5

What are the common protocols used by email?

Answer 5

• POP3
• SMTP
• IMAP

Question 6

What is VOIP?

Answer 6

Voice over internet protocol, it allows people to use the internet to speak to people

Question 7

What is the http protocol?

Answer 7

Hypertext transfer protocol, it describes how a web browser requests pages from a server

Question 8

What command does the http protocol use?

Answer 8

GET command

Question 9

What is the secure version of http?

Answer 9

HTTPS

Question 10

How does HTTPS work?

Answer 10

If used SSL to encrypt the data transfer

Question 11

What is meant by lossy?

Answer 11

Lossy means removing data in order to compress the file

Question 12

What is meant by lossless?

Answer 12

Lossless reduces the size of the data file by filtering out unnecessary data by reducing the number of bits

Question 13

What is a Codec?

Answer 13

A device or program that compresses data