IT

• Which printer works by melting toner onto the paper?

  -Laser printer
• Term for number of pixels used to form an image on the screen

  •Resolution
• Which file format is used to save plain text?

  .txt(textfiles)
• One word for cellular technology used for data transfer

  -Wifi
• Examples of operating systems (OS)


  • Microsoft Windows
  • Linux
  • Android
  • iOS
• What is a server?

  -A main computer which provides resources to other computers on a network
• What is an Operating System(OS)

  -Software that controls all the activities which take place in a computer
• The subdivision of hard drives so that multiple OS can be installed 


  Partition
• Defragmentation 


  -Organising and cleaning out your computers storage mediums for improved performance and speed
• Give two differences between SSD(Solid state drive) and HDD(Hard disc drive)

  -SSD is faster than HDD

  -SSD is more expensive than HDD

  -SSD is electronic and HDD is mechanical
• What is the fireWire port mostly used for?

  -For connecting peripheral devices
• What is a peripheral device?


  -Any external device
• Function of the motherboard 


  -It houses different the components of the computer and allows them to communicate
• What is known as the powerhouse of the computer 


  -The CPU(Central processing unit)
• Functions of the CPU

  • Carries out all the work on the computer
  • Does all calculations
• Stable temperature of CPU

  -45°
• What is RAM and it's functions

  RAM, (Random access memory) is a kind of volatile hardware

  Functions

  • For temporary storage of data
  • Enables easy access to data
  • Allows fast access to applications
  • Allows you to switch between different applications
• What is the best printer overall and explain how it works?

  -Laser printer, it melts toner onto the paper
• Describe two main categories of software and give an example of each

  • Application software, which allows the user to complete a specific function

  E.g. Google Chrome, Skype, Games, Spotify

  • System software,which is the specific type of software which manages a computing device

  E.g. -Operating System

  -Utility devices

  -Device drivers
• Name and describe different types of operating systems

  • Stand alone Operating System (Microsoft Windows, Linux , iOS, Android)

  Stand alone Operating System -functions independently from a network a network

  • The Network (server)Operating System (Windows Server, Ubuntu Server, UNIX)

  -help computers work together on a network (rather than in stand alone )

  • Embedded Operating System (GPS , Smart TV) Designed for a specific purpose (embedded computer systems)
  • -they aim to enhance functionality and reliability
• Application software


  • Microsoft office package
  • OpenOffice Package
  • Other correct answer
• Proprietary software


  Have to pay a license fee and you cannot get access to source code. E.g Windows, Microsoft Office, Antivirus software,Most computer games
• Proprietary software uses three main distribution models, namely Shrinkwrap, Shareware and Freeware.
• Shrinkwrap


  • Bought in store or online
  • May not copy or use without a licence being bought
  • Usually needs one license for each computer
• How does an Inkjet printer work and what is it used for 


  -It paints an image using a spray of ink. This printer is used for commercial purposes
• What if a text file used for 


  A text file (.txt) is used to store text
• Text files (.txt)


  Used to store text, do not have any information about the fonts, font sizes, or multimedia, such as photos and videos
• Rich-text format files (.rtf)

  Can save more information including different formatting options such as bold, italic, font size and font colour, as well as images and drawings, can be opened in Microsoft WordPad
• Comma separated value (or CSV) files


  Text files that can be used to store tables of information, each line in the CSV file represents one row of data, the data from the different columns are separated using commas, since CSV files only contain text, they cannot include any type of formatting that you might be familiar with from spreadsheet applications like Excel
• Hypertext Markup Language file (.html)

  Contains text, text references to other external files, like images in the article and references other files like video, CSS, or JS files
• Algorithm 


  Ordered steps for carrying out a task or solving a problem
• Broadband


  Fast, high bandwidth connection to the internet
• Bandwidth


  The capacity at which a network can transfer data(mbps/kbps)
• What is a variable

  A memory box which can only store one item of data at a time
• Access point?


  Consists of a sender, transceiver and antenna which transmits and receives radio waves
• What connects mobile devices to a network

  -Cellular
• Type of malware which seems safe but is dangerous

  -Trojan
• What do we call the layout computers are connected in a network?

  Topology
• Advantages and disadvantages of star topology

  Adv.

  If one computer fails, it won't affect the other computers

  Dis .

  Expensive (uses cables which are expensive)
• What is UTP?

  UTP,(Unshielded twisted pair), is the transfer of electrical pulses along cables