1.3.3 Networks

Question 1

What Is a Node?

Answer 1

A computer in a network.

Question 2

What is a Network?

Answer 2

A collection of connected nodes.

Question 3

What is a NIC?

Answer 3

Allows a node to attach to a network.

Question 4

What is a switch?

Answer 4

Connects several devices in a network.

Question 5

What is a LAN?

Answer 5

Local Area Network - Devices linked in the same geographic location

Question 6

What is a WAN?

Answer 6

Wide Area Network - Devices linked across a large geographic area. Often connect via 3rd party channels.

Question 7

What is a protocol?

Answer 7

A set of rules to govern data transmission.

Question 8

What is HTTP?

Answer 8

Hyper Text Transfer Protocol - A protocol for viewing web pages.

Question 9

What is HTTPS?

Answer 9

A protocol for viewing web pages securely using encryption.

Question 10

What is FTP?

Answer 10

File Transfer Protocol - A protocol for transferring files.

Question 11

What is a standard?

Answer 11

An agreed set of rules for creating a type of code

Question 12

What is an Internet Protocol (IP) address?

Answer 12

A 4 byte number used to locate a device on a network unique.

Question 13

What is a Media Access Control (MAC)?

Answer 13

A 6 byte hex number used to locate a network card or device. Always unique.

Question 14

What is circuit switching?

Answer 14

A direct connection between two devices. Eg.a 1950’s phone call.

Question 15

What is packet switching?

Answer 15

A connection between two devices sent in a small amounts of data.

Question 16

Network Interface Card (NIC)

Answer 16

Provides a MAC address for a node.
Sends and receives network data.

Question 17

What is Ethernet?

Answer 17

A type of wired connection using coper cables.Also a protocol and a standard

Question 18

What is a Network Topology?

Answer 18

A map of how devices on a network connect to each other and the Internet.

Question 19

What are the 3 types of network topologies?

Answer 19

Star Topology
Mesh Topology
Bus Topology

Question 20

What is a server?

Answer 20

A computer that holds data for other computers.

Question 21

What is a client?

Answer 21

A computer that requests data from a server

Question 22

Two types of network service?

Answer 22

Client - Server and Peer to Peer

Question 23

What is a Wireless Access Point?

Answer 23

A device that sends and receives data using radio signals.

Question 24

What are the 2 types of WiFi speed?

Answer 24

2.4Ghz
5Ghz

Question 25

What is a Layer?

Answer 25

A step in a protocol

Question 26

What are the 4 layers for the TCP/IP stack?

Answer 26

Application
Transport
Internet
Link

Question 27

What is Application Layer?

Answer 27

Select an appropriate protocol

Question 28

What is the Transport layer?

Answer 28

Split data into packets. Add the packet numbers and a port.

Question 29

What Is the Internet layer?

Answer 29

Add the sender and recipient IP. Creates a socket.

Question 30

What is a Link layer?

Answer 30

Add the sender and recipient MAC addresses.

Question 31

What is a DNS?

Answer 31

Domain Name System - A database matching IP addresses to Domain names.

Question 32

What is a URL?

Answer 32

Uniform Resource Locater - The written of a website.

Question 33

What are the key DNS characteristics?

Answer 33

Speed
Privacy
Personalisation