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WorksheetsComputer Science - End of Year Quiz
Total questions: 75
Worksheet time: 46mins
RAM stands for: (a) Access Memory
ROM stands for: Read (a) Memory
Volatile memory is...
Temporary memory, it requires power to retain its data.
Permanent memory, it keeps its contents even when it has no power.
Non-volatile memory is...
Temporary memory, it requires power to retain its data.
Permanent memory, it keeps its contents even when it has no power.
RAM is...
Slow speed, volatile memory
High speed, non-volatile memory
Slow speed, non-volatile memory
High speed, volatile memory
RAM cannot be read and written to...
True
False
RAM is known as the main memory...
True
False
One thing that is stored in RAM whilst the computer is being used is: D (a)
One thing that is stored in RAM whilst the computer is being used is: P (a)
One thing that is stored in RAM whilst the computer is being used is: F (a)
When a computer boots up is the operating system copied from the secondary storage to the RAM?
Yes
No
RAM is...
Slower than the CPU cache
Faster than the CPU cache
RAM is...
Slower than secondary storage
Faster than secondary storage
Do computers have a limited amount of RAM?
Yes
No
What two reasons would virtual memory be needed?
The computer doesn't want to use RAM
A particularly memory-intensive application is being used
Not enough applications are running
Too many applications open at once
If the CPU needs to read data stored in the virtual memory, it must move it back to RAM...
True
False
Using virtual memory can make a computer...
Respond at the same speed, it doesn't make much difference.
Fast to respond when switching between applications
Slow to respond when switching between applications
What kind of storage is virtual memory?
Secondary storage
Primary storage
RAM
ROM does what?
Stores all the data and instructions
Is used as secondary storage
Tells the CPU how to boot up
ROM can be read and written to...
True
False
ROM is...
Volatile
Non-volatile
ROM is known as the main memory of a computer...
True
False
Does ROM contain all the instructions a computer needs to properly boot up, called the BIOS?
Yes
No
What does BIOS stand for?
Brain Information Outputs Sounds
Basic Inside Outside Switch
Basic Input Output System
As soon as the computer is powered on what happens?
The CPU accesses the RAM
The CPU reads the instructions from the ROM
The CPU accesses the Virtual Memory
Is ROM built into the motherboard?
Yes
No
What is a Character Set?
All the characters which have to be recognised by humans
All the characters which have to be converted into code
All the characters which have to be recognised by the computer system
What is sampling?
Sound recorded at regular intervals
Colour picked from a photograph
Sound represented digitally
Increasing the resolution of an image will....
Increase the sample rate and quality
Increase the quality
Increase the file size and quality
The sound card converts the signal into a digital file by 'sampling'. This means measuring the ______________ of the wave at different times. What is the missing word?
attitude
amplitude
application
More bits per pixel equals?
A greater colour depth
Low resolution
High resolution
How many characters in the ASCII character set?
127
128
8
What is a limitation of using 16-bit images?
Only 4096 levels of colours and tones
Only 256 levels of colours and tones
Only 65,536 levels of colours and tones
Increasing the number of samples you take per second will...
increase amplitude values of an audio file
increase sound quality of an audio file
increase the resolution of an audio file
Images are stored as a series of...
bits
pixels
colours
Digital images are made by blending ______, ____________ and _________ together to form the rest of the colours.
Red, Green and Blue
Blue, Yellow and Red
White, Black and Grey
What does this flowchart symbol mean?
Decision
Process
Input/Output
What does this flowchart symbol mean?
Decision
Process
Input/Output
What symbol would you use to START and END an algorithm?
Sub-routine
Terminator
Process
What is the outcome if we use DIV (example: 15 DIV 5)
You are given just the remainder after a division
You are given the whole number without a decimal
What would be the outcome if we use MOD (example: 15 MOD 5)
You are given just the remainder after a division
You are given the whole number without a decimal
What would x equal in the following equation? x = ((5 * 7) + 3) / 4
10.5
9.5
8.5
7.5
Name one common way to write and plan an algorithm starting with P (a)
Name one common way to write and plan an algorithm starting with F (a)
Which of the following searches looks through every item one by one until it finds what it is looking for?
Linear Search
Binary Search
Which of the following searches looks at the middle of the list and then the middle of that list and then the middle of that list until it finds what it is looking for?
Linear Search
Binary Search
The following list of numbers are to be searched: 104, 120, 143, 162, 173, 186, 190, 195, 198, 207 - what numbers will be examined if a LINEAR search is used to find number 162
104, 120, 143
104, 120, 143, 162
173, 143, 162
In pseudocode the word print would be written as...
INPUT
OUTPUT
ELSE
THEN
Which of the following lines shows an example of a variable?
score = 0
else:
print ("hello world")
OUTPUT hello world
Boolean is...
A whole number
Either TRUE or FALSE
One or more characters enclosed in quotation marks
An integer is...
A whole number
Either TRUE or FALSE
One or more characters in quotation marks
An string is...
A whole number
Either TRUE or FALSE
One or more characters in quotation marks
What part of the body is the CPU described as?
Head
Brain
Heart
The CPU's job is to process what?
...all the data and instructions to make the system work
...all the information it can find
...lots of data so that the computer knows what to do
What does ALU stand for? Arithmetic L (a) Unit
What does CU stand for? C (a) Unit
How does the CU execute programs?
By following the fetch-decode-execute cycle
By following the fetch-debug-execute cycle
By following the fetch-decode-excelling cycle
What is cache?
It stores program operations and data while a program is being executed
It executes programs using the fetch-decode-execute cycle
It is a small amount of memory which is a part of the CPU
What does the ALU do?
Is a very fast memory unit
Performs all the calculations and logical operations
Controls the flow of the data
Which of the following are LOGIC operations the ALU can perform?
AND, NOT, OR
Addition, Subtraction, Multiplication
Print, Input, Variables
Which is the fastest kind of memory for the CPU to access?
Random access memory
Level-2 cache memory
Level-1 cache memory
The Von Neumann architecture is an actual computer...
True
False
The Von Neumann architecture is an idea of how a computer a should be built...
True
False
Programs consist of what... which are stored in the memory addresses
Instructions and memory
Instructions and data
Memory and data
With the Von Neumann architecture, the program instructions and data are stored where?
RAM
ROM
The CPU can change tasks simply by loading a different program into memory...
True
False
You don't need to have a certain amount of memory to hold both programs and data...
True
False
Tick two of the registers in the CPU...
MDR
MSR
MAR
MER
Inside the CPU, PC stands for...
Personal Computer
Program Counter
Program Computer
What does the accumulator do?
Stores immediate results of calculations in the ALU
Holds the memory address of the instruction for each cycle
Holds the actual data or instruction
How many types of buses are there?
One
Two
Three
Click two busses from below...
Counter
CPU
Address
Data
The frequency of the clock pulses is know as the...
Computer speed
Clock speed
Clock timer
The clock speed is measured in...
Time
MPH
Hertz
The lower the frequency, the more instructions can be performed in any given moment of time...
True
False
