TCP / IP Stack , DNS And Protocol Layering

Question 1

TCP / IP Stack

Answer 1

Set of protocols (rules) that control the way computers communicate within networks

Question 2

TCP

Answer 2

Transmission Control Protocol

Question 3

IP

Answer 3

Internet protocol

Question 4

Layers of TCP / IP

Answer 4

• Application layer
• Transport layer
• Internet layer
• Link layer

Question 5

Application layer

Answer 5

Rules in this layer define the overall format of the network communication - states what protocol needs to be used

Question 6

Transport layer

Answer 6

• Makes and maintains connection
• Splits data into packets
• numbers these packets
• Checks for errors

Question 7

Internet layer
(also called network layer)

Answer 7

Adds the ip address of the source and destination

Question 8

Link layer

Answer 8

Defines rules for actual physical data connections from node to node
Depend if network. is wired / wireless … ect
- Adds the mac address identifying the Network interface card of the source and destination

Question 9

Subnet adress

Answer 9

IP address only used within the network. invisible to rest of world

Question 10

DHCP

Answer 10

Dynamic Host Control Protocol

Question 11

Dynamic Host Control Protocol

Answer 11

Controls IP addresses inside the LAN

Question 12

DNS

Answer 12

Domain name system / server

Question 13

Domain name system

Answer 13

used to name and organise internet resources
Way of designing web addresses that allow us to predict where internet resources are located
- e.g. .co.uk

Question 14

Domain name server

Answer 14

Keeps a table of a websites URL and its IP address
- allows for IP address to be looked up and found using websites URL

Question 15

MAC address

Answer 15

Specific to each device
Number burned into memory of network cards

Question 16

Network identification card

Answer 16

Includes MAC address
Converts PC’s