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WorksheetsFinal revision quiz
Total questions: 45
Worksheet time: 26mins
What is a collection of wires called that sends data and addresses around the computer?
A bus
A connection
A link
A cable
What is 0101 in denary (base 10)?
(a)
Using a nibble (4 bits), write the binary for 14
(a)
Sort the following data units from smallest to largest (1 - 5)
Kilobyte
Megabyte
Gigabyte
Terabyte
Petabyte
In a flowchart, what does this symbol represent ?
Decision
Process
Input/output
Terminator
In a flowchart, what does this symbol represent ?
Input/output
Decision
Process
Terminator
In a flowchart, what does this symbol represent ?
Input/output
Process
Terminator
Decision
What is the most appropriate variable to store a person's age?
String
Character
Integer
Real
Here is an array of temperatures named Temps. In a program, what value will be returned by temps[0]?
Error message
3.3
13.1
4.5
Here is an array of temperatures named Temps. In a program, what value will be returned by temps[10]?
Error message
3.3
13.1
4.5
In this array called "names", what will be returned by names(0, 2)?
Charles
1
Ben
Error message
In this array called "names", what will be returned by names(1, 1)?
Aaron
Ben
Second
1
What can an operating system do?
Allow the hardware and software to communicate?
Make a computer run faster
Make tea
carry out hospital operations
What happens to RAM when the computer is switched off?
Data is lost
Data is stored
Data is retained for 10 seconds
Data is copied to the hard drive
The picture shows a type of user interface as a function of operating system
Command Line
Graphical User Interface
Picture Point Mode
MacOSX
What is the primary function of a CPU in a computer system?
To provide power to the system
To execute instructions
To store data permanently
To connect to the internet
Which of the following is a non-volatile memory type?
Hard Drive
Registers
Cache
RAM
You can make changes to an object with
methods
attributes
modifiers
parameters
What is an object?
Everything
An instance of a class
A detail of a class
A class of details
-OpeningDate
-InterestRate
are examples of what in OOP?
Classes
Objects
Attributes / Properties
Methods
postcode= "BL1 2AA"
What is the type of Postcode Variable ?
float
real
string
integer
age= 18
What is the type of Age Variable ?
float / real
integer
string
boolean
storage= "28"
What is the type of Storage Variable ?
float / real
integer
string
boolean
status= False
What is the type of Status Variable ?
float / real
integer
string
boolean
What is a characteristic of data in arrays?
Data can be of different data types.
Data is unstructured.
All instances of the data have the same data type.
Arrays can only hold numeric data.
What is the value at index 2 in the given array?
A) 17
B) 42
C) 13
D) 56
How many elements does the array in the diagram contain?
A) 3
B) 4
C) 5
D) 6
How many bytes are needed to store this string value: "Hello"
5
40
1
0
What does CPU clock speed measure?
The number of instructions a CPU can execute per second
The physical size of the CPU
The amount of heat a CPU generates
The size of the CPU cache
What is the primary function of cache in a CPU?
To increase the CPU clock speed
To store frequently accessed data for quick retrieval
To cool down the CPU
To increase the number of CPU cores
How does increasing the number of cores in a CPU affect its performance?
Decreases overall performance
No change in performance
Increases potential for multitasking and parallel processing
Reduces the cache size
Which is NOT an input device?
Keyboard
Microphone
Speaker
Mouse
Label the CPU and the RAM sockets / slots.
What is the role of RAM in a computer system?
Store data permanently
Process graphics
Provide temporary storage for active processes
Control peripheral devices
What does the data bus width determine in a processor?
Maximum memory address referenced
Frequency of fetch-execute cycle
Number of bits transferred simultaneously
Role of cache memory
Select the bus which sends control signals between the CPU, memory and input/output controllers
Control Bus
Data Bus
Address Bus
Select the bus which sends data between all CPU components
Control Bus
Data Bus
Address Bus
Select the bus which sends memory addresses from the CPU to other components
Control Bus
Data Bus
Address Bus
Which of these is a benefit of cloud computing?
It can reduce costs for a company as they do not need to buy additional hardware to store data
It is the cheapest option for a company to store their data as they do not need to pay for cloud computing
Data can be accessed anywhere as an internet connect is not needed to access data and software stored in cloud computing
Data will always be more secure in a cloud computing system
