Networking and the Internet

Question 1

Internet

Answer 1

A network of interconnected devices, using telecommunications line, using standardised communication protocols.

Question 2

World Wide Web

Answer 2

The multimedia content hosted on the devices connected to the Internet.

Question 3

Modem

Answer 3

A device that converts analogue signals from telecommunications systems to digital signals for use in computing devices, and vice versa.

Question 4

Router

Answer 4

A device for forwarding data packets to the correct location in a computer network.

Question 5

Server

Answer 5

A specialised computer that manages access to a centralised resource in a network, such as email, media or data files.

Question 6

Terminal

Answer 6

A device for entering commands or data into a computer system and displays the output. Often used to manage servers.

Question 7

Hub

Answer 7

Connects devices in a network. An input to any port is repeated to all ports except the original source port.

Question 8

Switch

Answer 8

Connects devices in a network. An input to any port is only send to the device the data packet was addressed to.

Question 9

LAN

Answer 9

Local area network. A network which only covers a small geographical area, such as a building.

Question 10

WAN

Answer 10

Wide area network. A network that covers a broad area i.e., links across metropolitan, regional, national or international boundaries using telecommunication lines.

Question 11

WiFi

Answer 11

A standard means of connecting compatible devices together using radio waves.

Question 12

Data transfer medium

Answer 12

The medium through which data is transferred. E.g. Ethernet cable, fibre optics, radio waves, infra red, microwaves etc.

Question 13

Domain Name Server (DNS)

Answer 13

A computer server responsible for assigning IP addresses to devices connected to its network. Also converts domain names, into IP addresses.

Question 14

TCP

Answer 14

Transmission control protocol. One of the key protocols for data transfer over networks. It controls the transfer of data packets within the network, error checks and confirms receipt.

Question 15

IP

Answer 15

Internet Protocol. A set of rules governing the format of data sent over the Internet or other networks.

Question 16

IP address

Answer 16

A binary number, represented by 4 octets, assigned to each device to identify and locate it on a network.

Question 17

MAC address

Answer 17

A unique numerical address given to all network capable devices. Comprised of 5 sets of 2 hex bits.

Question 18

HTTP

Answer 18

Hyper text transfer protocol. A set of rules governing how Hyper text is transmitted across networks.

Question 19

FTP

Answer 19

File transfer protocol. A set of rules governing how files are transferred across networks.

Question 20

SSH

Answer 20

Secure shell is a set of rules for secure data communication, remote login and execution over networks.

Question 21

SSL

Answer 21

A secure protocol for transmitting private documents via the internet, typically used for email communications.

Question 22

HTML

Answer 22

Hypertext markup language. A set of tags and rules used to develop a hypertext document. Used to create webpages.

Question 23

URL

Answer 23

Uniform resource locator. Commonly known as the web address, the URL identifies a specific webpage located on the Internet.