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WorksheetsOCR Computer Science 1.1.2
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What doesn’t affect the performance of the computer
a)
Clock Speed
b)
Number of Cores
c)
The number of instructions in the program
d)
Cache Size
2.
If the processing speed goes from 1GHZ to 4GHZ and the processor is changed from an 8 core to a dual core processor – what is the exact effect on the performance of the computer?
a)
The number of instructions executed per second quadruples
b)
The number of instructions executed per second doubles
c)
The number of instructions executed per second stays the same
d)
The number of instructions executed per second is halved
3.
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.
4.
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
5.
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.
6.
Increasing the clock speed could mean?
a)
Allows more instructions to run per second.
b)
You can store more instructions in your computer.
c)
The cache memory will increase as well.
d)
More storage in the cache memory.
7.
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.
8.
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
9.
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.
10.
What is a core?
a)
A processing unit in a CPU.
b)
Pixels on a screen.
c)
The centre of an apple.
d)
Data store.
11.
What are cores used for?
a)
They receive instruction and perform them.
b)
Compost
c)
Illuminating the screen.
d)
Storing data.
12.
What is clock speed measured in?
a)
Gigahertz
b)
M/s
c)
N/kg
d)
Decibels
13.
Name one factor affecting CPU performance
a)
cache size
b)
size of the CPU
c)
Your name
d)
whether or not you have good wifi
14.
What is a cache?
a)
It stores data so that future requests are quicker
b)
Not a real thing
c)
money spelt wrong
d)
a processing unit in a CPU
15.
How many cycles per second would a processor with a clock speed of 1 GHz carry out?
a)
1 million
b)
1 thousand
c)
1 billion
d)
3 hundred
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