1.3 Common Protocols

Question 1

What is a protocol?

Answer 1

A set of rules that allows two devices to communicate

Question 2

What does TCP (Transmission Control Protocol) do?

Answer 2

Provides an error free transmission between two routers

Question 3

What does an IP (Internet Protocol) do?

Answer 3

• Routes packets across a wide area network
• Along with TCP it makes up the TCP/IP protocol stack

Question 4

What is a HTTP (Hypertext Transfer Protocol)?

Answer 4

• A client-server method of requesting ands delivering HTML web pages

Question 5

What is a HTTPS (Hypertext Transfer Protocol Secure)?

Answer 5

• Encryption and authentication for requesting and delivering HTML web pages
• Used when sensitive information needs to be transferred e.g. passwords and bank account details

Question 6

What is FTP (File Transfer Protocol) used for?

Answer 6

• Used for sending files between computers, usually on a wide area network

Question 7

What does POP (Post Office Protocol) do?

Answer 7

• Retrieves emails from a mail server. Remove it from server and transfers to your device

Question 8

What does SMTP (Simple Mail Transfer Protocol) do?

Answer 8

• Sends email to an email server

Question 9

What is IMAP (Internet Message Access Protocol) used for?

Answer 9

• Used by mail clients to manage remote mail boxes and retrieve email from a mail server