1.3.3 Networks

Question 1

Protocol

Answer 1

A set of rules

Question 2

Network Protocol

Answer 2

An agreed way of how to communicate over a network

Question 3

Uniform Resource Locators/URLs

Answer 3

The full address of an internet source

Question 4

Domain Name System/DNS

Answer 4

Identifies the area or domain that an internet resource resides in

Question 5

Internet protocol / IP address

Answer 5

A unique address that is assigned to a network device

Question 6

WAN / Wide area network

Answer 6

Connects 2 or more LANs that are in different geographical locations

Question 7

LAN / Local area network

Answer 7

Networked devices that are physically close together

Question 8

Circuit switching

Answer 8

Creates a direct link between two devices of the duration of the communication

Question 9

Packet switching

Answer 9

A method of communicating packets of data across a network that has other communication happening simultaneously

Question 10

Router

Answer 10

Used to connect at least 2 networks

Question 11

TCP/IP stack

Answer 11

Transmission Control Protocol / Internet Protocol.

A set of network protocols that work together as 4 connected layers

Question 12

Firewalls

Answer 12

A security checkpoint that prevents unauthorised access between 2 networks

Question 13

Proxy servers

Answer 13

Intercepts all packets entering and leaving a network, hiding the true network addresses of the source

Question 14

Encryption

Answer 14

One way of making messages travelling over the internet secure

Question 15

Server

Answer 15

A computer dedicated to proving a service to users across a network

Question 16

Client-server Networking

Answer 16

One or more computers(clients) connects to a powerful central computer(the server)

Question 17

Peer-to-peer

Answer 17

There is no central server, individual computers are connected to each other, locally or over a WAN so they can share files