Protocols

Question 1

Define what is meant by a
‘network protocol’

Answer 1

A set of rules for transmitting data in a network

Question 2

What is
SMTP
(Simple Mail Transfer Protocol)

Answer 2

Protocol used for sending an e-mail

Question 3

what is , POP3
(Post Office Protocol

Answer 3

• Protocol used for downloading an e-mail from the
  server
  _ The email is then removed from the email server.

Question 4

what is , IMAP
(internet message access protocol)

Answer 4

Protocol used for downloading an e-mail from the server

-Allows synchronisation of emails across different devices, this is because a copy of the email remains
on the server and so can be downloaded to different devices

Question 5

what is , HTTP
(hypertext transfer protocol)

Answer 5

Protocol used for Transmitting web pages over the
internet.

Question 6

what is , HTTPS
(hypertext transfer protocol secure)

Answer 6

Protocol used for Transmitting secure (encrypted)
websites.
▪ Eg securely logging into a bank’s website

Question 7

what is , TCP
(transmission control protocol)

Answer 7

This protocol splits messages into smaller packets
before they are then transmitted over the internet

Question 8

what is , IP
(internet protocol

Answer 8

IP protocol routes each packet using an IP address to
make sure it reaches the right destination

Question 9

what is , FTP
(File Transfer Protocol)

Answer 9

Transferring files directly from a client to a server

Question 10

What is meant by a layer in a network protocol?

Answer 10

• A way of dividing the functions of the protocol into different sections.

Question 11

What are the advantages of having layers? [2 marks]

Answer 11

Each layer is self-contained (1) this allows different developers to concentrate on one aspect of the network that they specialise in (1)