Three things that will improve the performance of a computer are ...

Clock Speed, Cache Memory, number of Core processors.

A computer system is made up of hardware and software components and is capable of:

data input, data storage, data processing, data output.

Peripheral devices are ...

outside the computer e.g., monitor, printer, speakers.

Amongst other things, a CPU is made up of ...

Cache Memory, Control Unit, Arithmetic Logic Unit

These are all Flash Memory devices:

USB Memory Stick, SD card, Memory Card for video games.

Additional processor cores increase the speed of the CPU because they ...

can each perform instructions independently of the others.

Computer hardware is ...

the physical parts, e.g., CPU, mouse, HDD.

A Solid State secondary storage device stores binary 0s and 1s as...

switches on a semi-conductor material. Open = 0 Closed = 1.

In order for a computer to communicate with the server and other computers, it needs ...

a Network Interface Card (NIC).

Virtual Memory is less expensive but reduces performance because ...

it uses the Hard Disk Drive which is slower than RAM.

An optical secondary storage device stores binary 0s and 1s as...

reflective areas on disk or tape. Reflect =0 no reflect=1.

works faster but is more expensive than main memory.

A magnetic secondary storage device stores binary 0s and 1s as...

magnetised areas on disk or tape. North = 0 South =1

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A451 Revision - Topics 1 and 2

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#A451 revision

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Questions 30

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1
Program instructions and data move between the main memory and the processor using system ...
buses.
cycles.
trams.
cabs.
2
This device is able to calculate, sort or perform an action on data input to the computer.
Storage
Central Processing Unit (CPU)
Spreadsheet
Operating System
3
Three things that will improve the performance of a computer are ...
the Fetch, Decode and Execute cycle.
Clock Speed, Cache Memory, number of Core processors.
buses that are faster, cheaper, and more reliable.
Energy Drinks, Steroids and PEDs.
4
The Register in which arithmetic and logic results are stored as calculations are carried out
CPU
Program Counter (CU)
Instruction Register
Accumulator
5
The CPU performs the following instructions in a continuous cycle (choose the correct order).
decode, execute, fetch
fetch, execute, decode.
decode, fetch, execute
fetch, decode, execute
6
Typical cache memory sizes range from ...
1GB to 1TB
500MB to 1GB
4MB to 16MB
256KB to 4MB
7
Programs made up of sequences of instructions that tell the hardware what to do are ...
computer peripherals.
computer software.
computer systems.
computer programmers.
8
ROM
Read, Write, non-volatile memory
Read Only, non-volatile memory
Read Only, volatile memory
Read, Write, volatile memory
9
Computer can Read and Write to it, and it is volatile (information is lost when no power).
RAM
ROM
10
Clock Speed is measured in ...
hertz
joules
bits
bytes
11
A computer system is made up of hardware and software components and is capable of:
computational thinking and creating algorithms.
databases, spreadsheets, word processors, web browsers.
mice, keyboards, CPUs, USB pen drives.
data input, data storage, data processing, data output.
12
Peripheral devices are ...
inside the computer e.g., HDD, CPU, NIC
are logic gates and truth tables.
outside the computer e.g., monitor, printer, speakers.
proprietary software applications.
13
Amongst other things, a CPU is made up of ...
Cache Memory, Control Unit, Arithmetic Logic Unit
Machine Code, Binary Code, Assembly language
ALU, CU, HDD, RAM
Power Supply, Motherboard, CPU
14
These are all Flash Memory devices:
External HDD, CD-Rom, USB Memory Stick .
Hard Disk Drive (HDD), SD card, USB Memory Stick.
Cache, RAM, HDD, SD Card.
USB Memory Stick, SD card, Memory Card for video games.
15
Additional processor cores increase the speed of the CPU because they ...
can work together to get the job done more quickly.
can each perform instructions independently of the others.
are more expensive.
Take it in turns to perform a task, so they don't get tired.
16
Computer hardware is ...
source code written by computer programmers.
the software, e.g., Operating System (OS), Word Processor.
electronics tools, e.g., screwdriver, soldering iron.
the physical parts, e.g., CPU, mouse, HDD.
17
Which instruction retrieves a memory address from a register called the Program Counter (PC)?
Fetch
ADD
Execute
Decode
18
A Solid State secondary storage device stores binary 0s and 1s as...
None of the above.
reflective areas on disk or tape. Reflect =0 no reflect=1.
switches on a semi-conductor material. Open = 0 Closed = 1.
magnetised areas on disk or tape. North = 0 South =1
19
The CPU carries out an instruction.
The Decode step
The Execute step
The Cycle step
The Fetch step
20
The barcode-like image at the top equals 84, what does the bottom image equal?
75
108
2
4
21
The CPU is working out what the op-code is telling it to do to the data.
The Quick step
The Decode step
The Fetch step
The Execute step
22
Reliability, according to NASA is ...
performing adequately under certain operating conditions
All of the above.
performing adequately for the period of time intended
the probability of a device performing adequately
23
The amount of RAM available affects the performance of a computer because it can ...
process larger files
All of the above.
it avoids the use of virtual memory.
run more programs at the same time
24
In order for a computer to communicate with the server and other computers, it needs ...
a router.
a peripheral device.
a printer.
a Network Interface Card (NIC).
25
This type of hardware device is used to move information between computer systems.
Storage
Processing
Communications
Peripheral
26
A typical Register size may be ...
32 or 64 kilobytes
32 or 64 megabytes
32 or 64 gigabytes
32 or 64 bits
27
Virtual Memory is less expensive but reduces performance because ...
it uses the Hard Disk which is volatile.
it uses the Hard Disk which is non-volatile.
it isn't real, it's only virtual.
it uses the Hard Disk Drive which is slower than RAM.
28
An optical secondary storage device stores binary 0s and 1s as...
magnetised areas on disk or tape. North = 0 South =1
None of the above.
switches on a semi-conductor material. Open = 0 Closed = 1.
reflective areas on disk or tape. Reflect =0 no reflect=1.
29
Cache memory ...
works faster but is less expensive than main memory.
works more slowly but is less expensive than memory.
works faster but is more expensive than main memory.
works faster and is less expensive than main memory.
30
A magnetic secondary storage device stores binary 0s and 1s as...
reflective areas on disk or tape. Reflect =0 no reflect=1.
None of the above.
switches on a semi-conductor material. Open = 0 Closed = 1.
magnetised areas on disk or tape. North = 0 South =1

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