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WorksheetsN5 Computer Systems Revision
Total questions: 26
Worksheet time: 2mins
Which part of the processor deals with calculations?
ALU
RAM
Memory
Control Unit
Which part of the processor temporarily stores information while it is being processed?
ALU
Registers
Control Unit
Memory Unit
Which type of graphic is stored as a grid of pixels, where each pixel's colour is stored as a binary number?
Vector
Bit-Mapped
How many bits is used to represent characters using Extended ASCII?
7
6
8
3
Using the following floating point representation, identify the mantissa: 0.892462 x 10⁴
892462
0.892462
4
10
Using the following floating point representation, identify the exponent: 0.892462 x 10⁴
4
10
892462
0.892462
Which bus transfers the data between the processor and the memory?
Data
Address
Which bus transfers the memory location from the processor to the memory?
Address
Data
Which translator uses the line by line method?
Interpreter
Compiler
Which translator uses the least amount of memory when translating code?
Compiler
Interpreter
Translate this Binary number to Denary: 0000 0101
5
8
7
1
Select all that apply - Which of the following are methods of reducing energy consumption?
Turning it off when not in use
Reducing the brightness of the monitor
Sleep mode
Closing all the tabs
What is the purpose of encryption
To encode data when sending it so it is unreadable if stolen
To stop people accessing files
Keep data safe
Translate a program
State the type of object of this vector graphic
Circle
Ellipse
Rectangle
Polygon
Which translator produces a separate machine code file of the program ready to run?
Interpreter
Compiler
What does the control unit do?
Carries out calculations
Stores data temporarily
Manages the instructions
Processes information
Identify all the components that are part of the Central Processing Unit
Input Device
Control Unit
Arithmetic/Logic Unit
Output Device
Registers
Identify two advantages of using Interpreters
It is quicker to start execution
Takes up less memory
It is easier to locate errors as the interpreter highlights lines of code that caused the program to fail
Translation is a lot slower
How is a vector graphic stored?
Each pixel is stored as a binary number
As a collection of objects
As a collection of objects with the attributes of each object stored
Each pixel is stored as a binary number in a grid of pixels.
State the type of character Enter is an example of
Printable Character
Control Character
Each of the letters of the message ERROR will be stored as an ASCII character. Calculate the number of bits required to store this message:
8 bits
128 bits
16 bits
40 bits
Select correct names for attributes of vector graphic:
coordinates
fill colour
line colour
size in pixels
A firewall blocks unauthorised access to a network.
TRUE
FALSE
Select the purpose(s) of a firewall?
to block any attempts to access the protected by firewall device
to filter incoming network traffic so only trusted and reliable network connections have access to the device.
to scan the device for any malicious software present
to check if keyloggers are installed on device
What scrambles data to make it unreadable?
Firewall
Encryption
What language does translators translate code into?
Machine Code
Java
Command Language
