WorksheetsHigher Computer Systems
Total questions: 2
Worksheet time: 33mins
What is an integer?
A number that can be positive, negative, or zero and can have a decimal place.
A whole number that can be positive, negative, or zero and cannot have a decimal place.
A number that is always positive and can have a decimal place.
A number that is always negative and cannot have a decimal place.
What are floating point numbers?
Numbers that are always whole and cannot have decimal points.
Numbers that contain floating decimal points and are recognized by computers as real numbers.
Numbers that are always positive and do not contain decimal points.
Numbers that are always negative and contain fixed decimal points.
What is the mantissa in scientific notation?
The part of a number located before the point.
The part of a number located after the point.
The power that is used to determine how far the point has moved.
The whole number part of a number.
What is the exponent in scientific notation?
The part of a number located before the point.
The part of a number located after the point.
The power that is used to determine how far the point has moved.
The whole number part of a number.
What is the range in the context of binary numbers?
The distance from the lowest to the highest in a set of numbers
The accuracy of reproducing the original denary number
The amount of storage space available
The number of bits used to store data
What does precision refer to in the context of binary numbers?
The distance from the lowest to the highest in a set of numbers
The accuracy of reproducing the original denary number
The amount of storage space available
The number of bits used to store data
What does ASCII stand for?
American Standard Code for Information Interchange
American Standard Code for Internet Interchange
American Standard Code for International Interchange
American Standard Code for Internal Interchange
How many bits does ASCII use to represent characters?
7 bits
8 bits
16 bits
32 bits
What is the maximum number of characters that ASCII can store?
128
256
512
1024
How many bits does Extended ASCII use to store a character?
8 bits
7 bits
16 bits
32 bits
What is the maximum number of characters that Extended ASCII can store?
256
128
512
1024
How many bits per character does Unicode allow for?
16 bits
7 bits
8 bits
32 bits
How many different characters can Unicode represent?
65,536
128
256
1024
What is a printable character?
A character that is visible to the user
A character that is not visible to the user
A character that is only used in programming
A character that is used for formatting
What is the main reason for the development of Unicode?
To reduce the storage space required for characters
To increase the number of potential characters that can be represented
To replace ASCII entirely
To simplify character encoding
What is a disadvantage of Unicode compared to Extended ASCII?
It uses less storage space
It can represent fewer characters
It requires twice as much storage
It is less compatible with older systems
What is the newer version of Unicode that allows for storage of 4,294,967,296 different characters?
UTF-8
UTF-16
UTF-32
UTF-64
What is a pixel in computer graphics?
A) A 3D object
B) A picture element
C) A type of software
D) A color palette
What does a bitmap represent in computer graphics?
A) A collection of 3D models
B) A map of pixels
C) A set of vector shapes
D) A color gradient
What is the definition of resolution in the context of computer graphics?
A) The number of colors in an image
B) The total number of pixels
C) The size of the image file
D) The type of image format
What does color depth refer to in a bitmap image?
A) The number of pixels in the image
B) The number of bits assigned to each pixel
C) The physical size of the image
D) The type of image compression used
What are bitmap graphics made up of?
Lines
Shapes
Pixels
Vectors
Which of the following is an example of a bitmap graphics package?
Photoshop
Paint
Illustrator
CorelDRAW
What happens when more bits are allocated per pixel in a bitmap graphic?
The graphic becomes larger in size
The graphic becomes smaller in size
More colors can be used in the graphic
Fewer colors can be used in the graphic
What is the effect of having more bits per pixel in a bitmap graphic?
Lower storage requirement
Higher storage requirement
No change in storage requirement
Reduced color depth
In programs such as Fireworks that can work with vector graphics, how does the computer store information about an object?
By its attributes
By its size
By its color
By its shape
Which of the following is NOT an attribute for a rectangle in vector graphics?
Start x and y position
Length and breadth
Angle of rotation
File size
What is the primary responsibility of the processor?
Managing input and output devices
Carrying out the fetch/execute cycle
Storing data permanently
Controlling the power supply
What is the term used to describe the process of sending and receiving data to/from the processor and memory?
Data transfer
Fetch/execute
Memory management
Input/output
What are the three main components of every processor?
Control Unit, ALU, Registers
Control Unit, RAM, Registers
ALU, RAM, Cache
Control Unit, Cache, Registers
Which component of the processor is responsible for performing arithmetic and logical operations?
Control Unit
ALU
Registers
Cache
Which component of the processor manages the execution of instructions?
Control Unit
ALU
Registers
Cache
Which component of the processor temporarily holds data and instructions?
Control Unit
ALU
Registers
Cache
What is the benefit of having more cores in a processor?
It increases the processor's clock speed.
It allows the processor to receive and process more sets of instructions at the same time.
It reduces the power consumption of the processor.
It decreases the size of the processor.
What is the function of the data bus in a computer system?
To connect the processor with memory and other hardware devices
To store data permanently
To provide power to the computer
To cool down the processor
What is the effect of increasing the data bus width from 32 wires to 64 wires?
The computer can transfer twice as much information at one time
The computer's power consumption is halved
The computer's memory capacity is doubled
The computer's processing speed is reduced
How does increasing the size of the data bus affect the system performance of a computer?
It improves the system performance
It decreases the system performance
It has no effect on the system performance
It makes the system unstable
What is cache memory?
A large amount of memory located far from the CPU
A small amount of memory which is a part of the CPU
A type of permanent storage
A type of external storage device
What is the primary purpose of cache memory?
To permanently store data
To temporarily hold instructions and data that the CPU is likely to reuse
To store data that is not frequently accessed
To serve as a backup for RAM
Which component of the CPU automatically checks cache for instructions before requesting data from RAM?
Arithmetic Logic Unit (ALU)
Memory Management Unit (MMU)
Control Unit
Input/Output Unit
Why does the CPU control unit check the cache for instructions before requesting data from RAM?
Because cache memory is larger than RAM
Because cache memory is cheaper than RAM
Because this process takes less time
Because cache memory is more reliable than RAM
What is an intelligent system?
A machine with an embedded, Internet-connected computer that can gather and analyze data and communicate with other systems.
A machine that can only perform pre-programmed tasks.
A system that does not require any form of connectivity.
A computer that can only store data.
What is one benefit of being able to control the heating system remotely?
It allows you to save on electricity bills
It allows you to turn the heating system off if you are not going home
It allows you to monitor the weather
It allows you to control other smart devices
What is considered one of the main contributing sources of greenhouse gas?
Factories
Vehicles
Agriculture
Power plants
According to studies in the European Union, what percentage of all carbon dioxide emissions is caused by transport?
10%
15%
25%
35%
Why do vehicles consume greater amounts of fuel in traffic jams?
Because they are constantly accelerating and braking
Because they are moving at high speeds
Because they are carrying heavy loads
Because they are using air conditioning
What do intelligent transport systems use to improve the efficiency and safety of transport networks?
Only hardware
Only software
Software and hardware, along with information and communications technologies
Only information and communications technologies
How do cars with individual navigation systems help reduce traffic congestion?
By using less fuel
By using satellite information on traffic flow to guide drivers away from traffic congestion
By driving at higher speeds
By reducing the number of cars on the road
What is the primary benefit of start-stop systems in intelligent car management systems?
They increase the engine's power.
They reduce the amount of time the engine spends idling.
They enhance the car's speed.
They improve the car's aesthetics.
Which of the following is recognized as an offence under the Computer Misuse Act (1990)?
Authorized access to computer material
Unauthorized access to computer material
Authorized modification of computer material
Making, supplying, or obtaining anything for legal use
What does the Computer Misuse Act (1990) consider as an offence related to intent?
Unauthorized access with intent to commit or facilitate a crime
Authorized access with intent to commit or facilitate a crime
Unauthorized access without intent to commit or facilitate a crime
Authorized access without intent to commit or facilitate a crime
Which of the following is NOT an offence under the Computer Misuse Act (1990)?
Unauthorized modification of computer material
Making, supplying, or obtaining anything which can be used in computer misuse offences
Authorized access to computer material
Unauthorized access to computer material
What is a cookie?
A small data file created when you access a website
A type of virus that infects your computer
A program that speeds up your internet connection
A file that stores your passwords
What is the primary purpose of a cookie?
To store your personal preferences or log in details
To delete your browsing history
To increase your internet speed
To protect your computer from viruses
What additional function do tracking cookies perform compared to regular cookies?
They record and transmit your details back to the cookie’s author
They delete your browsing history
They protect your computer from malware
They increase your internet speed
What is one of the uses of tracking cookies?
To gather marketing information
To delete your browsing history
To protect your computer from viruses
To increase your internet speed
How can tracking cookies help advertisers?
By targeting personalized adverts
By deleting unwanted emails
By speeding up the loading time of websites
By protecting against phishing attacks
Put the steps of the fetch-execute cycle in the correct order
The processor sets up the address bus with the required address.
The processor activates the read line on the control bus.
The instruction is fetched from the memory location using the data bus and stored in the instruction register
The instruction in the instruction register is interpreted by the processor, decoded and carried out.
