1. Which one of these is an advantage for a vector image?

a. File sizes are relatively small.

What is a benefit of using Unicode?

Can be used for more languages.

1. What is a disadvantage of ASCII?

a. It only used 8 bits to representcharacters.

1. Under the Computer Misuse Act (1990) it is an offense…

o To access others private info with the purpose of deleting it.

1. What is the last step to the Fetch/Execute – Memory Write cycle?

a. Data bus transfers data to the memory location from address bus.

1. What does the memory address register do?

a. Holds the currently addressedmemory location.

1. The current instruction register…

o Holds the opcode of the current instruction.

Small pieces of data stored by the web browser. Records user's activity.

1. What does the address bus do?

a. Carry memory addresses from theCPU to the separate components.

What is a peripheral?

Attached to a computer but not an integral part of it.

1. When a memory read operation occurs in the fetch execute cycle, what happens?

o Data is taken to the processor.

1. Which is NOT a cost due to a DOS attack?

o New computers due to old ones having virus’s due to the DOS attack.

What data will the tracking cookies on the Amazon website NOT store?

o The size of your previously bought item - it then selects your size.

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Computer Higher Revision Quiz 1

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Questions 24

Answers

1
1. Which one of these is an advantage for a vector image?
a. Difficult to create realistic images.
a. Same appearance in all systems, regardless ofhardware or software.
a. Images can be very realistic.
a. File sizes are relatively small.
2
1. Which of these does not increase computer performance?
a. Narrower address bus
a. Increased clock speed
a. Increased number of processors (cores)
a. Wider data bus
3
What is a benefit of using Unicode?
Uses less storage per character.
Uses less storage per sentence.
Can be used for more languages.
Uses more storage per character.
4
1. What is a disadvantage of ASCII?
a. It only used 8 bits to representcharacters.
a. It doesn’t take much storage.
a. It only used 16 bits to represent characters.
a. It takes too much storage.
5
1. Under the Computer Misuse Act (1990) it is an offense…
o For an organisation to not get rid of old physical customer records.
o For an organisation to not encrypt their customers data.
o To not have any virus protective software installed on computers.
o To access others private info with the purpose of deleting it.
6
1. What is the last step to the Fetch/Execute – Memory Write cycle?
a. The control unit write line is activated.
a. MDR passes the data to be written to the data bud.
a. Data bus transfers data to the memory location from address bus.
a. MAR sets up the address bus with the relevant memory
7
1. What is the range of positive and negative numbers that can be represented by using 24 two’s complement?
a. -8,388,608 to 8,388,608
a. -8,388,608 to 8,388,607
a. -32,768 to 32,767
a. -2,147,483,648 to 2,147,483,647
8
1. What does the memory address register do?
a. Holds the content of the currently addressmemory location.
a. Holds the currently addressedmemory location.
a. Provides a timed pulse to keep all componentssynchronised.
a. Carries memory addresses to the memorycontroller.
9
1. Which bus carries ‘things’ from the controllers to the appropriate Outputs?
o System Bus
o Control Bus
o Ratho Bus
o Data Bus
10
What improves performance?
Bigger I/O port
Width of data bus
More keyboards
Have a bigger memory buffer register
11
What does DOS stand for?
Denial of starting
Denial of signal
Denial of service
Denial of support
12
What number spell “Oscar” using ASCII?
78,115,92,93,119
79,115,99,97,114
79,115,99,96,113
78,116,99,96,113
13
1. The current instruction register…
o Stores single bit condition code of the last outcome of the ALU
o Holds the opcode of the current instruction.
o Carries out mathematical and logical operations.
o Is used to transfer data to and from the memory.
14
What are cookies?
Big pieces of data stored by the web browser. Records the user's activity.
Small pieces of data stored by the web browser. Records user's activity.
Food
Medium pieces of data stored by the web browser. Records activity.
15
What is –11100.11101 in SQA floating point?
111100011111000000010011
101010101111000001110001
101011110010000001101010
111100111010000000000101
16
1. What does the address bus do?
a. Carry out mathematical and logical operations.
a. Carry memory addresses from theCPU to the separate components.
a. Carry data signals from INPUT controllers, to OUTPUT controllers
a. Carry control signals to and from allcomponents.
17
What is a peripheral?
Attached to a computer but not an integral part of it.
It carries control signals to and from all components.
Socket on a computer that a cable is plugged into.
Something made up.
18
1. When a memory read operation occurs in the fetch execute cycle, what happens?
o Data is written to the memory.
o Data is taken to the processor.
o Data is passed through the Control Bus.
o Data is taken from the processor.
19
1. I/O controllers are a series of what?
o Microchips
o Peripherals
o Transistors
o Resistors
20
1. Which is NOT a cost due to a DOS attack?
o Compensation to customers as a result of a lost court case.
o Lawsuits as the attack could have been prevented (encryption).
o Marketing costs due to damaged reputation.
o New computers due to old ones having virus’s due to the DOS attack.
21
1. Which is the fastest type of memory?
o Cache Memory
ROM
o RAM
EPROM
22
What is a reason for DOS attacks?
To send secret messages
To carry out revenge
To make friends
Just for fun
23
What data will the tracking cookies on the Amazon website NOT store?
Things you were previously looking at -creates a personalised experience.
o Log in info such as emails and passwords to save time.
o Shopping basket- if you leave the site, it will be there on your return.
o The size of your previously bought item - it then selects your size.
24
1. Convert 113 to binary.
a. 10101001
a. 01110001
a. 01110000
a. 01101001

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