TCP-IP

Question 1

What is the application later?

Answer 1

Defines how various user services operate such as web browsers and email

Question 2

Give two protocols which are in the application layer

Answer 2

HTTP, HTTPS, FTP, SMTP, POP3, IMAP

Question 3

What is the transport later?

Answer 3

Establishes a dedicated channel between the source and destination devices to transfer the data along

Question 4

What protocol is found in the transport layer?

Answer 4

TCP

Question 5

What is the Internet (or network) layer?

Answer 5

Adds the source and destination IP addresses to the data received from the transport layer and routes them to the recipient

Question 6

What protocol is found in the internet (or network) layer?

Answer 6

IP

Question 7

What is the link (or network interface) layer?

Answer 7

Defines how data is transferred from one another along the whole route from sender to recipient

Question 8

What protocols are found in the link (or network interface) layer?

Answer 8

Ethernet and Wi-Fi

Question 9

Describe the role of FTP in preparing outgoing data for transmission across the internet

Answer 9

FTP defines how the file must be requested

Question 10

Describe the role of TCP in preparing outgoing data for transmission across the internet

Answer 10

TCP establishes a channel between the sending and receiving devices and splits the data into packets

Question 11

Describe the role of IP in preparing outgoing data for transmission across the internet

Answer 11

IP adds a packet header with the source and destination IP addresses

Question 12

Describe the role of Ethernet/Wi-Fi in preparing outgoing data for transmission across the internet

Answer 12

Ethernet/Wi-Fi convert outgoing data packets into electric/radio signals for transmission to the network router. The packets are routed across the internet until they reach, and are receives by, the link layer on the receiving device.

Question 13

Describe the role of Ethernet/Wi-fi in receiving incoming data from the internet

Answer 13

Ethernet/Wi-Fi protocols specify how incoming signals should be converted back into data packets

Question 14

Describe the role of IP in receiving incoming data from the internet

Answer 14

IP removes the packet headers

Question 15

Describe the role of TCP in receiving incoming data from the internet

Answer 15

TCP reassembles the packets and checks that they are correct

Question 16

Describe the role of FTP in receiving incoming data from the internet

Answer 16

FTP defines how the file will be provided