Transmitting Data 15-20

Question 1

Cat5 (Wired system)

Answer 1

Telephone communication and ethernet networks

Question 2

Coaxial (Wired System)

Answer 2

All types of data communication, commonly used in television cabling

Question 3

Fibre optic (Wired System)

Answer 3

Telephone and internet cables, cable television and computer networking

Question 4

VGA (Wired device)

Answer 4

Analogue connection of video display equipment, such as projectors, CRTs, or LCDs

Question 5

HDMI (Wired device)

Answer 5

Digital connection of both video and sound from devices to display equipment

Question 6

USB/FireWire (Wired device)

Answer 6

Connecting equipment and peripherals, such as printers, scanners, input devices, cameras

Question 7

WiFi (Wireless system)

Answer 7

To connect devices wirelessly to local and wide area networks such as the internet

Question 8

3G/4G/WiMAX (Wireless system)

Answer 8

To connect data networks such as the internet whilst on the move

Question 9

Satellite broadband (Wireless system)

Answer 9

Provides connectivity to remote areas, often rural

Question 10

Microwave/Laser (Wireless system)

Answer 10

Allows point-to-point LAN connections between locations

Question 11

Bluetooth (Wireless connections)

Answer 11

For pairing devices over short distances, such as wireless headphones, watches, keyboards and mice

Question 12

WiFi direct (Wireless connections)

Answer 12

For connecting devices to remote displays

Question 13

WiFi (Wireless connections)

Answer 13

Allows ‘ad-hoc’ networks to permit wireless printing/scanning.

Question 14

WAN

Answer 14

A computer network that covers a large geographical area such as country or the whole world

Question 15

LAN

Answer 15

A computer network that covers a single building or site.

Question 16

PAN

Answer 16

Used to network devices wirelessly within a short range of an individual

Question 17

VPN

Answer 17

Creates a secure network connection over a public network

Question 18

Protocols

Answer 18

Rules that define methods of communicating data between two or more digital devices

Question 19

TCP/IP

Answer 19

Transmission Control Protocol and Internet Protocol are used together as the basic communication language of the internet

TCP is used to create the packets and reassemble them at the end
IP is used to route packets to the intended computer, using the computer’s IP address

Question 20

How is Data sent over the internet

Answer 20

Data sent over the internet is broke up into ‘packets’ to enable it to be sent more efficiently

Question 21

SMTP (Email)

Answer 21

the Simple Mail Transfer Protocol is used to transfer emails between mail servers

Question 22

POP3 (Email)

Answer 22

the Post Office Protocol 3 is used to retrieve emails from the mail server.

Question 23

IMAP (Email)

Answer 23

the Internet Message Access Protocol is used to retrieve emails from the mail server

Question 24

H.323 (Voice and Video calls)

Answer 24

this is one of the first successful VOIP protocols and is recommended by the ITV

Question 25

SIP (Voice and Video calls)

Answer 25

the Session Initiation Protocol is used to create, control and end VOIP connections

Question 26

RTP (Voice and Video calls)

Answer 26

the Real-time Transport Protocol is designed to transfer audio and video over IP-based networks

Question 27

HTTP (Web pages)

Answer 27

the HyperText Transfer Protocol is used to allow web servers and browsers to transfer files over the internet

Question 28

HTTPS (Web pages)

Answer 28

the secure version of the standard HTTP. It uses public key cryptography to encrypt communications between a web browser and server

Question 29

FTP (Web pages)

Answer 29

the File Transfer Protocol is used to transfer files over a network. It is technology used to upload files to a server as well as to download large files

Question 30

SSL and TLS (Security)

Answer 30

Secure Sockets Layer and Transport Layer security are used to ensure that transactions over networks are kept safe.