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Worksheets

Computer Science OCR - Chapter 1

Total questions: 71

Worksheet time: 36mins

Name
Class
Date
1.

Which one of these components is not in the CPU ?

a)

Arithmetic Logic Unit (ALU)

b)

RAM

c)

Cache memory

d)

Memory Address Register

2.

The drawbacks of Flash / Solid State Storage are...

a)

Can only be written and erased a finite number of times

b)

Lower capacity than magnetic

c)

Data can be lost when placed near magnetic fields

d)

Surface can be easily scratched

e)

Data cannot be re-written

3.

The drawbacks of Optical Storage are...

a)

Can only be written and erased a finite number of times

b)

Low capacity

c)

Data can be lost when placed near magnetic fields

d)

Surface can be easily scratched

e)

Data cannot be re-written

4.

The drawbacks of Magnetic Storage are...

a)

Easily damaged through being dropped due to moving parts

b)

Low capacity

c)

Data can be lost when placed near magnetic fields

d)

Surface can be easily scratched

e)

Data cannot be re-written

5.

The benefits of Flash / Solid State Storage are...

a)

Fastest read & write speeds

b)

Low cost per GB

c)

High Durability

d)

High Capacity

e)

Can be produced in a number of shapes and sizes

6.

The benefits of Optical Storage are...

a)

Fastest read & write speeds

b)

Low cost per GB

c)

High Durability

d)

High Portability

e)

Not affected by magnets

7.

The benefits of Magnetic Storage are...

a)

High Capacity

b)

Low cost per GB

c)

High Durability

d)

High Portability

e)

Not affected by magnets

8.

Secondary Storage is...

a)

Volatile

b)

Non-Volatile

9.

Which storage medium is most appropriate for an action camera?

a)

HDD

b)

CD

c)

DVD

d)

Flash / Solid State

10.

Which storage medium is popular for distributing video?

a)

CD

b)

HDD

c)

DVD

d)

USB Flash Drive

11.

Which is an example of Flash / Solid State memory?

a)

RAM

b)

ROM

c)

SD Card

d)

Cache

12.

Which storage device is not flash memory?

a)

RAM

b)

Micro SD

c)

SD Card

d)

HDD

13.

Which type of storage uses lasers to read the data?

a)

Magnetic

b)

All types

c)

Solid state

d)

Optical

14.

Why is a Hard Disk Drive (HDD) not usually recommended for portable devices?

a)

It has moving parts

b)

It will break if you touch it

c)

It is too small

d)

It is too large

15.

Which of the following types of storage is the most expensive per GB?

a)

Solid State

b)

Magnetic

c)

Optical

16.

Which of the following types of storage is the most durable?

a)

Optical

b)

Magnetic

c)

Solid State / Flash

17.

Which of the following types of storage would it be possible to access data the quickest on?

a)

Solid State / Flash

b)

Magnetic

c)

Optical

18.

What type of storage is a HDD?

a)

Solid State

b)

Optical

c)

Magnetic

19.

What type of storage is an SSD?

a)

Magnetic

b)

Optical

c)

Solid State / Flash

20.

Which of the following is not a type of storage?

a)

Magnetic

b)

Solid State / Flash

c)

Optical

d)

Hard Drive

21.

What type of storage is a DVD?

a)

Magnetic

b)

Solid State / Flash

c)

Optical

22.

What type of storage is a USB memory stick?

a)

Solid State / Flash

b)

Optical

c)

Magnetic

23.

Fetch D______ Execute is the cycle used to process and execute instructions.

a)

Design

b)

Develop

c)

Decode

d)

Dictate

24.
Where are all data and instructions stored in?
a)
SSD
b)
Memory
c)
Optical Disc
d)
Magnetic Hard Disk
25.
What gets stored in the MDR?
a)
The address to the next instruction or data
b)
The program which is loaded from main memory
c)
The data retrieved from the MAR
d)
The instruction from main memory
26.
What is the purpose of the accumulator?
a)
To store intermediate data
b)
To store decoded data
c)
To analyse the data
d)
To pass instructions
27.
What happens to the Program Counter after it has passed its address?
a)
It passes the next address
b)
It decodes the instruction
c)
It increments
d)
It decrement
28.
What gets passed to the MAR?
a)
The instruction
b)
Both the instruction and data
c)
The address to the next instruction or data
d)
The data
29.
In which register does the Fetch Decode Execute cycle start in?
a)
Memory Address Register
b)
ALU
c)
Memory Data Register
d)
Program Counter
30.
Which of the following is not part of the fetch stage?
a)
Address of next instruction copied from the PC to MAR
b)
The instructions held at that address is copied to the MDR
c)
The contents of the MDR are copied to the CIR
d)
ALU performs calculations on the data.
31.
The abbreviation (MDR) for a CPU stands for?
a)
Main Data Register
b)
Memory Data Register
c)
Main Directional Register
d)
Memory Directional Register
32.
The abbreviation (MAR) for a CPU stands for?
a)
Main Address Register
b)
Memory Address Register
c)
Main Addressing Register
d)
Memory Addressing Register
33.
The abbreviation (ACC) for a CPU stands for?
a)
Accumulator
b)
Accumulate
c)
Arithmetic Logic Unit
d)
Address
34.
The abbreviation (PC) for a CPU stands for?
a)
Personal Computer
b)
Program Counter
c)
Personal Counter
d)
Program Count
35.
Which of the following can the Arithmetic Logic Unit not do?
a)
ADD, SUBTRACT, MULTIPLY, DIVIDE
b)
Shift operations
c)
Boolean logic operations
d)
Accepts instructions and decodes it.
36.
The Arithmetic Logic Unit does?
a)
Connects parts of the CPU together.
b)
Performs arithmetic and logical operations on the data.
c)
Stores the outcomes of arithmetic and logic operations.
d)
Controls and coordinates the activities of the CPU.
37.
What does ALU stand for?
a)
Addition Logic Unit
b)
Arithmetic Logical Unit
c)
Arithmetic Logic Unit
d)
Algebra Logic Unit
38.
The control unit does what?
a)
Connects parts of the CPU together.
b)
Performs arithmetic and logical operations on the data.
c)
Stores the outcomes of arithmetic and logic operations.
d)
Controls timing and control signals around the CPU.
39.
Which of the following is not a component inside a processor?
a)
Memory
b)
Control Unit
c)
Arithmetic Logic Unit
d)
General Purpose Registers
e)
Text for option 5 (optional)
40.

What is the purpose of the data bus?

a)

Carries signals to control various devices and components

b)

Carries data around the computer system

c)

Carries the addresses of where data needs to go or come from

41.

What is the purpose of the address bus?

a)

Carries signals to control various devices and components

b)

Carries data around the computer system

c)

Carries the addresses of where data needs to go or come from

42.

What is the purpose of the control bus?

a)

Carries signals to control various devices and components

b)

Carries data around the computer system

c)

Carries the addresses of where data needs to go or come from

43.

A bus...

a)

Is how data is transported around a computer system

b)

Is how data is input into a computer system

c)

Is how data is output from a computer system

d)

Is how data is processed inside a computer system

44.

Which of the following are types of bus in a computer system

a)

Memory Bus

b)

Data Bus

c)

Input Bus

d)

Control Bus

e)

Address Bus

45.

True or False, Embedded Systems use Microprocessors to control specific functions relating to the device they are installed on?

a)

True

b)

False

46.
You can write data more than once to this device (1-3)
a)
DVD+R
b)
CD ROM
c)
ROM
d)
RAM
47.

BIOS contains...

a)

A set of instructions for starting up the computer

b)

The operating system the computer runs on

c)

Applications and general files

d)

All the data stored on the computer

48.

Select the statements which best describe ROM...

a)

It is volatile

b)

It is non-volatile

c)

Usually smaller in capacity

d)

Usually higher in capacity

e)

Can be removable in some devices

49.

Select the statements which best describe RAM...

a)

It is volatile

b)

It is non-volatile

c)

Usually smaller in capacity

d)

Usually higher in capacity

e)

Can be removable in some devices

50.

ROM can be...

a)

Read

b)

Written

c)

Erased

51.

RAM can be...

a)

Read

b)

Written

c)

Erased

52.

If BIOS was stored in the RAM what would happen?

a)

It would run faster because RAM is quicker to read and write

b)

It would get erased every time the computer shut off

c)

The BIOS could be larger because RAM has larger capacities

d)

It would remain after the computer has been shut off

53.

What does BIOS stand for?

a)

Binary Input Operating System

b)

Basic Input Output System

c)

Basic Input Operating System

d)

Basic Inverted Operating System

54.

What is RAM in Desktop Computers, Notebooks, and Smartphones is usually measured in?

a)

Gigabytes

b)

Megabytes

c)

Kilobytes

d)

Bytes

55.

Which of the following are volatile?

a)

RAM

b)

Secondary Storage

c)

ROM

d)

Hard Disk

56.

Which storage or memory solution below is used to store the BIOS?

a)

ROM

b)

Secondary Storage

c)

Hard Disk

d)

RAM

57.

Which statement is true?

a)

ROM contains the operating system

b)

RAM is part of the hard disk

c)

RAM stores programs / data used by the CPU

d)

ROM is volatile

58.

Non-volatile memory...

a)

Retains any stored data when there's no power

b)

Loses any stored data when there's no power

59.

Volatile memory...

a)

Retains any stored data when there's no power

b)

Loses any stored data when there's no power

60.

Which component could improve the performance of a computer?

a)

ALU

b)

External USB Storage

c)

Printer

d)

RAM

61.

Which of the following is an embedded system?

a)

Laptop

b)

Dishwasher

c)

Desktop Computer

d)

Tablet Computer

62.

What is an embedded system?

a)

A register used in a system

b)

A computer system that is built into another device

c)

Cache memory to store data for the system

d)

A machine that can do multiple purposes

63.
Which of the following is not a physical component inside the CPU?
a)
Arithmetic Logic Unit
b)
Control Unit
c)
Cache
d)
Clock Speed
64.
What did Von Neumann proposed?
a)
That a CPU must have a clock speed.
b)
Data is permanently saved to cache memory.
c)
Data and Instructions are stored permanently in main memory.
d)
Data and Instructions are stored in main memory together.
65.
Cache for a CPU is?
a)
Temporary data used to store data for websites.
b)
Super fast memory located on main memory.
c)
Super fast memory located in or nearby the processor.
d)
Temporary data used to store data used in apps.
66.
More cores mean?
a)
It will double in speed.
b)
The computer will run twice as fast in a dual core.
c)
The speed of the computer will definitely increase.
d)
Separate cores can work on 2 or more tasks at the same time
67.
A multi-core processor is?
a)
Two or more cache units inside a CPU.
b)
Multiple clock speed CPU
c)
Two or more processors inside a CPU.
d)
Multiple counter systems inside the CPU.
68.
Increasing the clock speed could mean?
a)
You can store more data in your computer.
b)
You can store more instructions in your computer.
c)
The software can respond faster.
d)
More storage in the cache memory.
69.
3 GHz means approximately how many instructions per second?
a)
0.3 million instructions
b)
3 million instructions
c)
0.3 billion instructions
d)
3 billion instructions
70.
Which of the following best defines clock speed?
a)
Used to count the number of instructions.
b)
The number of instructions stored in memory.
c)
The number of cycles performed in a second.
d)
Used perform mathematical calculations.
71.
Which of the following is not a characteristic of a CPU?
a)
Central
b)
Numbe of cores
c)
Cache
d)
Clock Speed