7.1.12 The role of common network protocols

Question 1

Explain:

Briefly, TCP/IP

Answer 1

Transmission Control Protocol/Internet Protocol - A set of standardised rules that allow computers to communicate on a network (suc has the internet)

Question 2

Explain:

Briefly, DNS

Answer 2

Domain Name System - When accessing a website a user can enter the IP address or use the hostname address, but because IP addresses are not easy to memorise the DNS converts the IP address into a host name than be read easily by users

Question 3

Explain:

Briefly, ARP

Answer 3

Address Resolution Protocol - Communication layer protocol that supports the process between the datalink and network layers. Identifies the designated MAC address based on the available IP address

Question 4

Explain:

Briefly, RDP

Answer 4

Remote Desktop Protocol - Microsoft product that provides users with a graphical user interface (GUI) when connecting to other networked computers

Question 5

Explain:

Briefly, VNC

Answer 5

Is used for remote desktop sharing and displays the virtual destop of another computer, allowing it to be controlled over a network connection

Question 6

Explain:

Briefly, SSH

Answer 6

Secure SHell - Used to operate services over an unsecured network using cryptography. Ity is commonly used by network admins who are required to access, manage and control systems and applications remotely

Question 7

Explain:

Briefly, SIP

Answer 7

Sesion Initiation Protocol - Singalling protocol, able to initiate, maintain, adjust and terminate real-time sessions

Question 8

Explain:

Briefly, SMB

Answer 8

Server Message Block - This is a network communication protocol that enables the shared access of files, printers and ports between connected nodes on a network

Question 9

Explain:

FTP/S

Answer 9

File Transfer Protocol/Secure - Basedo n the client and server model architecture and is used to transfer files between the client and the server on the network

Question 10

Explain:

Briefly, HTTP/S

Answer 10

Hyper Text Tranfer Protocol/Secure - Used to authenticate a website that the user is attempting to access. Provides secure network communication through the protection of the privacy and integrity of any data that is exchanged. Achieved via encryption of exchanged data

HTTP provides communication but there is no securing of data

Question 11

Explain:

Briefly, IMAP

Answer 11

Internet Message Access Protocol - Internet email protocol that stores emails on the mail server, the users then can retrieve the messages and respond to them

Question 12

Explain:

Briefly, POP3

Answer 12

Post Office Protocol - Within the application layer, facilitates the retrieval of emails from a remote server to the user’s local device. Enables user to view emails offline

Question 13

Explain:

Briefly, SMTP

Answer 13

Simple Mail Transfer Protocol - Communication layer protocol that is used to send emails

Question 14

Explain:

Briefly, SNMP

Answer 14

Simple Network Management Protocol - This collects and organises information associated with the devices that are managed on an IP network. It can modify the information in order to change the behaviour of the connected device. Devices include routers, switches and printers.

Question 15

Explain:

Briefly, TELNET

Answer 15

Referred to an application protocol which allows for bidirectional interactive communication using a virtual terminal connection