Term 1

Question 1

What is a CVS file? (comma separated values)

Answer 1

Takes data in table and saves it in text form, separates items with commas.

Question 2

What is a txt file?

Answer 2

Not formatted can be opened in any word processor.

Question 3

What is rich text formatting? (rtf)

Answer 3

Only save some of the formatting within text

Question 4

What is graphics interchange format? (Gif)

Answer 4

Stores still or moving images using smaller file size.

Question 5

What is joint Photographic expert group? (jpg)

Answer 5

Stores still images only - not moving

Question 6

What is portable document format? (pdf)

Answer 6

Document converted into images read on most computers. Can protect document
-pdf software writing can be used for editing.

Question 7

What is a portable network graphics? (PNG)

Answer 7

Compress image files without loss of image quality (lossless compression)

Question 8

What is moving picture experts group layer 4? (MP4)

Answer 8

Can store video, still images, audio
-used to transfer video files on the internet.

Question 9

What is moving picture experts group layer 3? (MP3)

Answer 9

-stores audio files
-no images
-small file sizes

Question 10

What is a cascading style sheet? (CSS)

Answer 10

Attached to webpages to define formatting

Question 11

What is a ZIP? (zipped file)

Answer 11

-files in compressed format
-saves storage, space and reduces transmission time.

Question 12

Why reduce files sizes?

Answer 12

-Limited storage, efficient use is important
-speed at which files are transmitted, depends on the size
-the larger the file size the more time it takes to send

Question 13

What is resizing and resampling?

Answer 13

-resizing changes the dimensions
-resampling changes the quality

Question 14

What are some solutions to ye strain because of computer use?

Answer 14

-dont use monitors that flicker
-use a screen filter
-take regular breaks- at least 5 minutes every hour
-keep your eyes at least 18 inches away from the screen

Question 15

What is repetitive strain injury? (RSI)

Answer 15

Damage to the fingers, wrists and other parts of the body due to repeated movements over a long period of time.

Question 16

What are the causes of RSI?

Answer 16

Typing or using a mouse for long periods of time
-Using too much force on your fingers when typing
-using a poorly designed keyboard
-workstation or chair is in the wrong height so arms are in an unnatural position.

Question 17

What are the solutions to RSI?

Answer 17

-Ensure workstation and chair are correct height
-support wrists by using wrist rests
-keep elbows close to your sides
-five minute break from typing attest every hour.

Question 18

What is deep vein thrombosis? (DTV)

Answer 18

Clot forming in a leg vein

Question 19

What are some symptoms of DTV?

Answer 19

-Swelling in the affected leg
-Localised heat in the affected leg
-Pain in the affected leg

Question 20

What can you do to prevent DTV?

Answer 20

-Take regular breaks
-Stand up and move around to allow the blood flow in your legs to return to normal
-Use an adjustable chair and ensure that your feet are firmly on the floor.
-Sit with a suitable posture - do not cross your legs long periods

Question 21

What is a hacker?

Answer 21

Breaks codes and passwords to gain unauthorised entry to computer systems.

Question 22

What are stand alone computers not affected by hackers?

Answer 22

Computers as part of networks or those with external links, are in danger from hackers

Question 23

What are the consequences of loss of data due to hacking?

Answer 23

-affects a business
-affects personal data
-comprises data privacy
-damage company reputation

Question 24

What are physical protecting systems?

Answer 24

-keeping servers or mainframes in locked rooms
-posting security guards
-security locks, smart cards
-using alarm systems and videos

Question 25

What is software used to protect computers?

Answer 25

Data encryption - data is being scrambled before being transmitted firewalls- block access from outside Access rights User IDs and passwords

Question 26

What is a virus?

Answer 26

a software program that is designed to copy itself over and over again attach itself to other programs.

Question 27

What is the most common way of getting computer viruses?

Answer 27

-email attachments -infected web pages -memory stick -downloading a file

Question 28

How can viruses be removed?

Answer 28

Anti-virus software

Question 29

How does anti-virus software work?

Answer 29

We detected, -alert the user, and ask them whether they want to remove the virus and clean the systems. -or whether they simply want to 'quarantine' the virus

Question 30

What is a trojan?

Answer 30

an application that appears to do something useful such as a computer game but quietly, behind the scenes it is doing something with ill-intent.

Question 31

How does a trojan work?

Answer 31

-log all your keystrokes -Allow someone else to take control of your computer whilst you are online -Capture screen shots and send them to a remote computer

Question 32

What is a worm?

Answer 32

Like a computer virus but they spread on their own though computer networks.

Question 33

What its spyware?

Answer 33

programs designed to keep track of which adverts you click on and then they send specific adverts to your browser.

Question 34

What is online crime?

Answer 34

Criminal activity directly related to the use of computers.

Question 35

What are some reasons for online crime?

Answer 35

-steal money --steal data or information -steal someones identity -cause general havoc for fun

Question 36

What are some consequences of theft of data?

Answer 36

-can stop business running -losing customers -losing sales -Can damage the reputation of the company

Question 37

What is fraud?

Answer 37

Trying to trick someone in order to gain an advantage.

Question 38

What are the most common forms of computer fraud?

Answer 38

-posing as someone from an official organisation -stealing your identity -phishing (sending emails to get you to give over your personal or account details or getting you to download a data key logger.) -promising a get rich scheme

Question 39

What is piracy?

Answer 39

copying software, music or film DVDs.

Question 40

What are some advantages of social networking?

Answer 40

-it is usually free -You can post interesting things online -The site makes it simpler to get in touch with long lost friends -very easy to keep in contact with people with similar interests

Question 41

What are some disadvantages of social networking.

Answer 41

-you lose privacy compared to not being on social network -Online bullying can be a problem if someone posts untrue or unkind thing about you -A real distraction and time waster. Some people spend many hours on social media instead of studying or working -Some people may use a fake profile and say untrue things about themselves.