TCP IP stuff

Question 1

TCP IP Layers

Answer 1

Application
Transport
Network
Link

Question 2

Application Layer

Answer 2

Assigns the correct protocol to transmit data
Renders data

Question 3

Transport Layer

Answer 3

Breaks up the data into packets and adds port number
Reassembles data, removes port number

Question 4

Network Layer

Answer 4

Adds destination and sender IP addresses to the packets
Routers work on this level
Remove IP addresses

Question 5

Link Layer

Answer 5

Provides physical connection between hardware
Adds MAC addresses (change with each hop)
Removes MAC addresses

Question 6

Socket Address

Answer 6

When an IP address is combined with a port number
Identifies which application on the device the packet gets sent to

Question 7

FTP

Answer 7

Application level protocol used to move files across a network

Question 8

SSH

Answer 8

Encrypted protocol to allow secure communication between nodes across a network
Commonly used for remote management of servers and other computers

Question 9

Email Protocols

Answer 9

Dedicated computers that are responsible for storing and providing access to emails

Question 10

SMTP

Answer 10

Used to send emails and forward them between mail servers to their destination

Question 11

POP3

Answer 11

Downloads email stored on a remote server to a local client (email is then removed after download)

Question 12

IMAP

Answer 12

Manages emails on a server so multiple clients can access the same account simultaenously