Protocols

Question 1

What are standards?

Answer 1

Ensure that devices can communicate with each other regardless of manufacturer or country

Question 2

What are protocols?

Answer 2

Rules that govern data transmission such as the format of data, how errors will be detected and corrected and methods of compression

Question 3

3 types of cables

Answer 3

1) Copper cables
2) Wireless
3) Fibre optic cables

Question 4

Modem

Answer 4

Used to connect a single device to the Internet

Question 5

Router

Answer 5

Receives packets and forwards them on the most efficient path using a routing table of IP addresses

Question 6

Hub

Answer 6

A network hub broadcasts data to every computer or Ethernet-based device connected to it

Question 7

Switch

Answer 7

Switches allow multiple devices to connect to the router and they broadcast data only to the correct devices

Question 8

Network Interface Card

Answer 8

Responsible for connecting a device to a network

Question 9

Wireless Access Point

Answer 9

Uses radio waves to allow devices to connect wirelessly

Question 10

TCP/IP

Answer 10

Transfers as packets between the two devices on a network in layers

Question 11

TCP/IP Layers (Another Train Is Late)

Answer 11

Application (http)
Transport (TCP)
Internet (IP)
Link (MAC Address)

Question 12

Why does TCP/IP consist of 4 layers?

Answer 12

Each layer is responsible for their own part of the communication process.
Each layer can be fixed more easily

Question 13

Packet Switching

Answer 13

Breaks down data (e.g. large files, emails) into smaller packets. Sends these packets separately along different routes and then reassembles them at their destination

Question 14

Circuit Switching

Answer 14

Sends the smaller packets along the same route and reassembles them at their destination