Topic 19 - Protocols

Question 1

What are protocols?

Answer 1

Protocols are the rules that defined methods of communication data between two or more digital device

Ensure that the transmission of data always follow procedure.

They are different protocols for different application

Question 2

What do TCP/IP stand for? And what are they used together?
(Email)

Answer 2

Transmission control protocol and Internet protocol are used together as the basic communication and language of the Internet

Question 3

What happens to data when it’s sent over the Internet?
(Email)

Answer 3

Data sent over the Internet is broken up into ‘ packets’ To enable it to be sent more efficient mean

Each packet is sent individually and then reassembled at the destination

Question 4

What is TCP used to create?
(Email)

Answer 4

TCP is used to create the packets and reassemble them at the end

Question 5

What is IP used to route?
(Email)

Answer 5

IP is used to route packets to the intended computer, using the computers IP address

Question 6

What does SMTP stand for and what is it used to transfer emails?
(Email)

Answer 6

SMTP – the simple mail transfer protocol is used to transfer emails between mail service

It is also used to transfer email from client software to the on outgoing mail server.

Question 7

What does POP3 stand for and what is it used to?
(Email)

Answer 7

 POP3 - Post office protocol 3 is used to retrieve emails from the mail server

it allows us to download messages to a client software for offline reading

Question 8

What does IMAP stand for and what is it used to?
(Email)

Answer 8

I am – the Internet messaging access protocol is used to retrieve emails from the mail server

Ramadan downloading the message, I am up since then with the mail server

Question 9

What do you mean you companies use? (Voice and video calls)

Answer 9

Many companies use their own proprietary protocols for voice and video calls over the Internet

Question 10

What is H.323?
(Voice and video calls)

Answer 10

Yeah H2323 – this was one of the first successful VOIP protocols and is recommended by the ITU (International Telecommunication Union)

Question 11

How is H.323 defined?
(Voice and video calls)

Answer 11

It defines the rules for communicating audio and video over packet switch networks

Question 12

What does SIP stand for and what is it used to?
(Voice and video calls)

Answer 12

SIP – the Session Initiation Protocol is used to create command control and and VoIP connection

Question 13

What is RTP stand for and what is it designed to do?
(Voice and video calls)

Answer 13

RTP - The Real-Time Transport Protocol is designed to transfer audio and video over IP base networks

Question 14

What does HTTP stand for and what is it used to allow?
(Web pages)

Answer 14

HTTP – the Hypertext Transfer Protocol is used to allow web servers and browsers to transfer files over the Internet it is how we access the World Wide Web

Question 15

What is HTTPS and what does it use?
(Web pages)

Answer 15

HTTPS = The secure version of the stsndard HTTP.
It uses public key cryptophy to encrypt communication between a web browser and the server

Question 16

What is FTP stand for and what is it used for?
(Web pages)

Answer 16

FTP = File Transfer Protocol
Is used to transfer files over a network

Question 17

What is FTP stand for and what is it and what does that use?
(Web pages

Answer 17

It is the technology which is used to upload files to a server as well as to download large files

Question 18

What does SSL and TLS stand for and whats are they used for?
(Security protocols)

Answer 18

SSL = Secure Socket Layer
TLS = Transport Layer Security
Use = to ensure that transactions over networks are kept safe.
SSL is gradually being phased out and replaaced with TLS