S4 Computer Systems Revision

Fill in the Blanks

Multiple Choice

• 123

• 10

• 45

Multiple Choice

• 1101010

• 2

• 1010

Multiple Choice

7. Vector Graphics

What is this vector graphic shape known as?

• Ellipse

• Polygon

• Rectangle

• Line

Multiple Choice

8. 8. Vector Graphics

Which of the following is NOT an attribute of a Vector Graphic

• Line Colour

• Fill Colour

• X, Y Co-ordinates

• Number of Sides

Fill in the Blanks

Multiple Choice

9. JPEG FIles

How many bits are used to store one pixel in a JPEG file?

• 8

• 24

• 256

• 16777216

Multiple Choice

11. GIF files

How many bits are used to store one pixel in a GIF file?

• 8

• 24

• 256

• 16777216

Open Ended

Describe how a bitmap graphic is represented in a computer system’s memory.

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Choice

15. RAM

What is not true about RAM?

• It stores data permanently

• It holds running programs

• It loses its contents when the computer is switched off

• It is organised into lots of separate memory locations

• It can be read from or written to

Match

18. Parts of a Processor

Once a program is implemented, state which part of the processor will execute the following tasks.

• Calculate Cost

• Transfer the next instruction from memory

• Stores the cost temporarily

ALU

Control Unit

Registers

• ALU

• Control Unit

• Registers

Multiple Choice

19. What is an advantage of an interpreter?

• The machine code is saved so the program only needs to be translated once.

• The user does not need a translator program to run the machine code therefore the program runs quicker and takes up less memory and processor time.

• Program will stop running when it encounters an error so it is easy to spot errors during the translation.

Multiple Choice

20. What is an advantage of a Compiler?

• The user does not need a translator program to run the machine code therefore the program runs quicker and takes up less memory and processor time.

• Easy to spot errors during the translation

• Program will run as soon as the first line is translated

Multiple Choice

21. Reducing energy use

What is the best way of reducing energy use when using computer systems?

• Using solar or wind power to charge batteries

• Recycling old computer systems

• Dimming screen, going to standby or shutting down when not in use

• Uninstalling apps, turning off WiFi, GPS and Bluetooth

Multiple Choice

22. What is a firewall?

• A network device that filters and checks all incoming and outgoing network traffic

• A network device that encrypts all data being sent so that, if intercepted, it cannot be read

• A network device that uses 2-factor authentication to verify your identity

• A network device that finds IP addresses based on URLs

Multiple Choice

23. Which technique is shown in this image?

• Translation

• Encryption

• Firewall

• Phishing

• Denial of Service