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H446 - 1.1 Flashcards | StudBud
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H446 - 1.1
H446 - 1.1
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OCR Computer Science A Level H446
Flashcards
99 cards
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Practice quiz
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Questions
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Answers
1
The control bus...
Carries the addresses of memory locations to be read/written to
Sends control signals from the CU
Carries data between the processor and the memory
2
Which register holds the RAM address you want to read or write from?
Memory address register
Memory data register.
Program counter
Current instruction register
3
Which processor is designed to use single machine instructions to operate on data sets?
Array
Multi-Core
Parallel
Pipeline
4
The most popular architecture is...
Harvard
Von Neumann
Oxford
MIT
5
What is an input device?
Something that can be used to insert data into the computer.
Device that is connected to a computer.
Something used to display the results of data.
Device plugged into a computer.
6
RISC code may have more lines of code than the CISC equivalent
False
True
7
A Processor with more than one core is:
Parallel
Array
Pipeline
Multi-Core
8
Data which has been fetched from or stored in memory is stored in...
CIR
ACC
MDR
MAR
9
CD
Storage
None
Output
Input
10
What is a storage device?
All of the above
Device that is connected to the computer.
Something that holds data.
Type of communication.
11
What is an output device?
Displays the results of inputted data.
Something that is used to insert data into a computer.
Something that can be used to input data into a computer.
A device that can be connected to the computer.
12
RAM is:
Volatile
Non-Volatile
13
The results of calculations made in the ALU are stored in the...
MAR
ACC
MDR
CIR
14
An example of where you would find CISC processors:
Laptops
Tablets
Smartphones
Desktops
15
What is the role of the CIR?
Stores address of the data/instructions to be fetched from or sent to
Keeps track of memory location of the line of machine code being executed
Carries out calculations and logical operations
Stores the most recently fetched instruction
16
Which one of these is a factor affecting CPU performance?
Cores
Materials
Word Size
All of the Above
17
Text to Speech Software
None
Input
Output
Storage
18
Hybrid devices are:
Type of HDD drive.
Combination of SSD and HDD Drives
Type of SSD Drive.
19
What does the data bus do?
Transfers binary data between registers
Transfers binary data between locations
20
What does the control unit do?
Sends out signals to co-ordinate how the processor works
Sends out signals to tell the software what to do.
Nothing it just has a fancy name
Communicate with bob
21
Several CISC instructions may be equivalent to a single RISC instruction
True
False
22
Braille Printer
None
Input
Storage
Output
23
What is the Immediate access store (IAS) also known as?
SOM
TOM
ROM
RAM
24
GPU's where originally designed for:
Huge amount of data displaying images
Help the CPU to function
Replace CPU's
Huge amount of data displaying videos
25
Which processor doesn't use two separate memories?
Von Neumann
Harvard
26
What can a GPU's not do?
Perform any the tasks CPU's can.
Perform all the tasks the CPU can.
Function alongside the CPU for higher efficiency.
27
What does the Control bus do?
Sends the signals to co-ordinate when things happen
Sends signals to co-ordinate when something should occur.
Controls commands from within the registers
28
Serial processing is...
instructions which are done one after the other to complete a task
instructions which are run concurrently to complete a task
Not always possible
Always possible
29
Optical State Devices are ....
Faster than SSD and Less Reliable
Slower than SSD and More reliable
Slower than SSD and Less reliable
Faster than SSD and More reliable
30
Foot pedal
Output
Storage
None
Input
31
Why will software created for Windows not work on Apple's Macintosh?
The instruction sets are different
The instruction set on Apple is the same as Windows
The software will work when installed correctly.
32
Select the TRUE statements
Cache memory is located in the processor
The more cache you have, the slower it operates
When cache is full, ROM is used instead
The first level of cache used by the CPU is level 3
33
Microphone
None
Storage
Output
Input
34
True or false: A maths processor is another type of main processor.
False
True
35
CPU
Input
None
Output
Storage
36
USB Stick
Storage
None
Input
Output
37
What is Software?
The Physical component of a computer.
A System utility.
Programs that make the hardware do useful things.
A cushion
38
CISC code may have fewer lines of code, but will take more processor time.
False
True
39
What is a bottleneck?
The slowest part of the system
A part of the system which speeds up the rest
A part of the system which limits the rest
The fastest part of the system
40
Name the 4 parts of the CPU
ALU, IAS, Control bus, registers
Control Unit, Registers, Intermediate access store, ALU
Registers, ALU, IAS, master control unit
Registers, ALU, Control unit, IAS
41
The address bus...
Sends control signals from the CU
Carries the addresses of memory locations to be read/written to
Carries data between the processor and the memory
42
What is the role of the PC?
Stores the data that has been fetched from or stored in memory
Carries out calculations and logical operations
Keeps track of memory location of the line of machine code being executed
Stores address of the data/instructions to be fetched from or sent to
43
CISC aims to use as few lines of assembly code as possible, even if more clock cycles are needed as a result.
False
True
44
The clock speed of a CPU is measured in...
KCal
GHz
KHZ
MPh
45
Which Processor can increase it's overall speed from the way it functions?
Von Neumann
Harvard
46
A bus is a...
Type of public transport
A place where data is stored in the processor
Communication channel which sends data around the computer
47
Mouse
Input
Storage
None
Output
48
What holds the next instruction to be fetched and executed.
Interrupt register
Accumulator
Program Counter
Current instruction register
49
What is a peripheral device?
Piece of hardware that connects to the computer.
Piece of hardware the computer needs to run
A card game
Piece of hardware used for system maintenance
50
What transmits a 1 or a 0?
electrical pulses
registers
buses
cache
51
What are registers?
memory locations within the CPU.
What co-ordinates the signals of the computer.
A piece of software that logs user actions.
Memory locations within the hardware
52
The processing of modern computers is now done by:
The Gaming Processing Unit
The Graphical Processing Unit
53
RISC Processors will take:
Many Fetch-Decode Execute Cycles to carry out a task.
One Fetch-Decode-Execute Cycle to carry out a task.
A few Fetch-Decode-Execute cycles to carry out a task
54
What does the address bus do?
Carries the addresses between the CPU and RAM
Carries instructions to the CPU
Carries instructions to RAM
55
What were CPU'S not designed to do?
Carry out a whole range of tasks.
Work on parts of a program.
Process huge blocks of similar data.
Process huge blocks of data.
56
A dual core system is always twice as fast as a single core system.
True
False
57
CISC aims to improve processing time by increasing number of instructions understood by the CPU in the instruction set.
True
False
58
How does a GPU contrast the CPU?
Have less cores
Costs less to produce than a CPU
Have more cores
Cost more to produce than a CPU.
59
What is Pipe-lining?
Data processing events executed in series
Data Processing events executed in parallel
60
Optical State devices are most commonly used for:
Desktop Computers
Laptops
61
How many levels of cache do most modern processors have?
3
2
4
1
62
What is the role of the MAR?
Stores the data that has been fetched from or stored in memory
Carries out calculations and logical operations
Stores the results of calculations made by the ALU
Stores address of the data/instructions to be fetched from or sent to
63
What is the role of the Arithmetic logic unit?
Store results of calculations.
Co-ordinate how the processor works
Carry out logical decisions and mathematical calculations.
Carry out decisions that aren't logical
64
What is the CPU?
A piece of hardware
A cool mix tape.
The brains of the computer
A piece of software.
65
An example of where you would find RISC processors
Tablets
Smartphones
Smart Watches
Laptops
66
Which register holds the data you have read from RAM or want to write to RAM.
Program counter
Memory data register
Status register
Memory address register
67
CISC processors...
Use more electricity than RISC
Are physically larger
Not as good at pipelining
Are better at complex tasks
68
An Example of a solid state device is ...
CD Rom
Memory cards
DVD
USB Drives
69
The most recently fetched instruction which is waiting to be decoded and executed is stored in the...
CIR
MAR
MDR
ACC
70
Speaker
Input
Storage
Output
None
71
What does the control unit control?
Your mind
The world
The hardware of the computer.
Fetch-Decode-Execute Cycle
72
Solid state devices are....
Faster, more reliable, and more efficient than HDD.
Slower, less reliable an less efficient than HDD.
Faster, more reliable but less efficient than HDD.
Not able to withstand knocks and shocks.
73
CISC processors have:
Simpler set of instructions to be used
Wide range of instructions to be used
74
The Von Neumann architecture is flawed because...
There is too little memory
The same memory unit stores instructions and data together
The buses cannot be used at the same time
The same bus is used to transfer data and instructions
75
RISC code can better utilise pipe-lining as the time needed for each operation can be predicted.
False
True
76
Which type of processor uses a single processor, but allows multiple cores/
Von Neumann
Harvard
77
Name the content(s) of the CIR during the Decode stage of the Fetch-Decode-Execute cycle.
Operand and Memory Location
Operand is the only content of this stage
Operand and Operator
78
CISC code can better utilise pipe-lining as the time needed for each operation can be predicted.
False
True
79
What is Hardware?
Piece of Hardware that connects to a Computer.
Program of a Computer.
A Type of Potato
Physical Component of a Computer.
80
Which one of these is a function of the ALU?
All of the Above
Send information where it needs to go
Hold data for processing
Perform logical calculations
81
Programs that are written in sequence are an example of what type of processor?
Parallel
Array
Pipeline
Multi-core
82
RISC aims to improve processing speed by simplifying instructions so that one line takes one clock cycle.
False
True
83
What is the role of the MDR?
Keeps track of memory location of the line of machine code being executed
Carries out calculations and logical operations
Stores the data that has been fetched from or stored in memory
Stores address of the data/instructions to be fetched from or sent to
84
What type of Processor does Windows use?
80 x 86
680 x 0
85
Pipelining means...
Running the fetch-decode-execute cycle more efficiently
RISC processors can run more efficiently
Fetches the next instruction while previous instruction is still decoding
Waiting for full FDE cycle to complete before starting the next
86
ROM is:
Volatile
Non-Volatile
87
Where are the results of the ALU stored?
In the ALU
In the Registers
In the control unit
In the accumulator
88
What is the role of the ACC?
Stores the data that has been fetched from or stored in memory
Stores the results of calculations made by the ALU
Stores address of the data/instructions to be fetched from or sent to
Carries out calculations and logical operations
89
What is the Immediate access store? (IAU)
What holds the instructions after they are created.
What holds instructions for the CPU.
Gandalf's dog
Where the calculations are performed.
90
The addresses of data/instructions which are being sent to/from memory are stored in the...
ACC
MAR
MDR
CIR
91
The different processor architectures are...
Van Damm and Hazard
Van Gogh and Harvey
Von Neumann and Harvard
Van Nuemonn and Holby
92
RISC Processors...
Tend to run at a lower clock speed
Use less power and generate less heat
Minimise the number of clock cycles per instruction
Make use of pipelining
93
The data bus...
Sends control signals from the CU
Carries data between the processor and the memory
Carries the addresses of memory locations to be read/written to
94
RISC code may have fewer lines of code, but will take more processor time.
True
False
95
The buses involved in the Fetch-Decode-Execute system are...
Control, Process, Data
Data, Address, Control
Address, Information, Process
Data, Address, Information
96
Each CPU in a Parallel processor has:
Access to whatever it needs when it is needed
All of the Above
Access to it's own cache
Access to it's own buses
97
Each core inside a multi-core processor has its own cache.
False
True
98
What improvements are seen to programs written for Parallel processing?
Cost
Efficiency
Speed
99
What is the role of the ALU?
Stores address of the data/instructions to be fetched from or sent to
Stores the most recently fetched instruction
Carries out calculations and logical operations
Keeps track of memory location of the line of machine code being executed
