TCP/IP

Question 1

TCP/IP

Answer 1

Transmission Control Protocol/internet protocol

Question 2

what is the first layer of the TCP/IP stack

Answer 2

application

Question 3

what is the second layer of the TCP/IP stack

Answer 3

transport

Question 4

what is the third layer of the TCP/IP stack

Answer 4

network

Question 5

what is the fourth layer of the TCP/IP stack

Answer 5

link

Question 6

what happens in the application layer

Answer 6

establishes the correct protocol to transmit data eg. POP3, SMTP, HTTPS ect.

Question 7

what happens in the transport layer

Answer 7

establishes an end to end connection with the receiver and sender and splits the data to be transmitted into packets

Question 8

what information does each packet contain

Answer 8

sequence number (order) and port number(protocol)

Question 9

what happens in the network layer

Answer 9

Provides the correct IP addresses for each packet’s source and
destination.

Question 10

what happens in the link layer

Answer 10

Controls physical connections between pieces of hardware in a network. Adds MAC addresses to packets that it receives from the network layer.

Question 11

what do MAC addresses do

Answer 11

The MAC addresses identify the hardware to which a packet should be sent. These MAC addresses change with every hop through a network.

Question 12

what is a socket address

Answer 12

ip address connected with the port number at the end eg. 114.68.22.199:433 433 being the port number

Question 13

why are we slowly switching to IPv6 from IPv4

Answer 13

because we are running out of IPv4 addresses