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OCR A Level Computer Science > Internet Protocols > Flashcards

Flashcards in Internet Protocols Deck (18)
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1

What is a network protocol?

An agreed way to communicate over a network.

2

What does "UDP" stand for?

User Datagram Protocol.

3

Where does the "UDP" reside?

It resides in the Transport layer.

4

What does connectionless mean?

It doesn't 'handshake' with the recipient device, and just assumes that it will be error free.

5

What is "UDP" typically used for?

Often used for video conferences and real time video games

6

What does "HTTP" stand for?

Hyper Text Transfer Protocol.

7

Where does "HTTP" reside?

In the application layer.

8

How does "HTTP" form a web page?

The protocol allows the browser to request files from a web server and renders them into a web page.

9

What is "HTTPS"?

Variation of HTTP called "http secure".

10

How does "HTTPS" work?

Works like HTTP, but it encrypts web page data before it is sent out of the browser.

11

What does "FTP" stand for?

File Transfer Protocol

12

What does "FTP" do?

Used to transfer (Upload and Download) files between a client and server on a network.

13

Where does the "FTP" reside.

It resides in the application layer.

14

What does "POP" stand for?

Post Office Protocol

15

What does "POP" do?

It allows emails to be downloaded and deleted and viewed offline by an email client.

16

What are the main disadvantages of "POP"

It can only handle a single mailbox, when a message is downloaded, it cannot be viewed by other devices, and does not support complex searches of email.

17

What does "IMAP" stand for?

Internet Message Access Protocol

18

What does "IMAP" do?

It works similarly to POP, but...