Communication and Internet technologies

Question 1

BitTorrent

Answer 1

a peer-to-peer protocol used to transfer and share large files across a network

Question 2

User Rights

Answer 2

rules about what a user is allowed to do with files but an administrator

Question 3

How does BitTorrent work?

Answer 3

• install software
• Link it into a folder it is going to transfer files from
• list of contents of folder sent to BitTorrent server
• doesn’t actually contain a file but a list of where to download it
• ‘seeders’ share file
• more seeders faster download

Question 4

Benefits of BitTorrent’s

Answer 4

• reduces cost to host
• forces equality through sharing
• usually free
• effective uses of download bandwidth

Question 5

Risks of BitTorrent’s

Answer 5

• little protection against malware
• legal only if you have a license
• you are not anonymous

Question 6

online storage

Answer 6

Storage space is available on a server-connected storage medium accessed via the internet, requiring login credentials for access.

Question 7

TWO advantages of installing a wireless network.

Answer 7

• No cables used
• Cost saving
• Easy to setup/connect

Question 8

TWO reasons why a peer-to-peer network is less suitable for a
company with many users.

Answer 8

• Difficult to manage a large number of computers
• More prone to the spread of malware

Question 9

role of a server

Answer 9

• A server provides resources (software, storage, etc.)
• Serves as a log-on controller
• Manages security settings on a network

Question 10

What is a switch and name a advantage and disadvantage

Answer 10

Switch = used to connect computers in a network to a central location for communication
Disadvantage = When a switch fails, all the computers connected to the switch will not be able to access the network
Advantage = They increase the available bandwidth of the network.

Question 11

NIC

Answer 11

network interface controller
= allows communication wirelessly or via a cable

Question 12

ADSL

Answer 12

• permanent connection via telephone line
• can be used for small and large networks
• different bandwidth specifications

Question 13

HTTP/HTTPS

Answer 13

• defines how web pages and their content are transferred across the web
• secure communication

Question 14

Archiving

Answer 14

store non-changeable files onto a secondary system

Question 15

Disk defragmentation

Answer 15

reorganise part of files to speed up your computer

Question 16

GIGO

Answer 16

Garbage in Garbage out
quality of output is directly related to the quality of the input

Question 17

SEO

Answer 17

Search engine optimization
To ensure high ranking in search results/increase the amount of
traffic on a website  by changing the design of webpages.

Question 18

File sharing

Answer 18

need to send a link so they can access it
gets around file size limitations.

Question 19

file syncing

Answer 19

Choose a folder that is linked to your server and as you edit it the software makes changes on the online one
- access even when offline
- Always have the latest file
- copied to cloud service automatically

Question 20

VPN

Answer 20

Virtual private network
creates a secure encrypted connection between your computer and a target network.

Question 21

Encryption

Answer 21

the scrambling of text or data using a specific set of rules to ensure privacy of data

Question 22

local encryption

Answer 22

protection of local files from unauthorized access and malware

Question 23

automatic encryption

Answer 23

built into various hardware and software devices .. without the user’s awareness like ATM transactions, etc

Question 24

SSL

Answer 24

secure sockets layer
- encrypts data that is sent over the internet using public key encryption

Question 25

Public key encryption

Answer 25

mathematical algorithms
2 separate keys. public plain text
private keys decrypt

Question 26

sematic search

Answer 26

where the semantic web allows computers to intelligently search though metadata

Question 27

Internet of things

Answer 27

the concept that more devices are being connected to the internet and are able to communicate

Question 28

Mediated Search

Answer 28

managed by humans rather than algorithms. fewer more useful results

Question 29

how would a sematic search work

Answer 29

A search will take place using the metadata of the relevant
content on the internet and will relate it to the user’s contextual
information to present a search result uniquely suited to the
user.

Question 30

AJAX

Answer 30

asynchronous JavaScript and XML
combines Java with a browser to download data without refreshing the page

Question 31

CSS

Answer 31

Cascading Style Sheets (CSS) separates the formatting of HTML and consolidates it in a single .css file. This allows for easy modification of website formatting by simply updating the CSS file, which will automatically update all web pages.