stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
GCSE OCR Computer Science Paper 1 Flashcards | StudBud
Explore
/
GCSE OCR Computer Science Paper 1
GCSE OCR Computer Science Paper 1
112 terms
·
StudBud Administration
·
1,414 plays
#GCSE #OCR #computer #science #9-1 paper 1. #computing
Flashcards
112 cards
F
Practice quiz
P
Host live
L
Questions
112
Answers
1
How many bits in a nibble?
6
4
2
8
2
Identify an event that does not take place during the fetch-execute cycle.
Address of instruction to be fetched is placed in MDR.
Decoded instruction is executed so CPU performs continuously
An instruction is fetched from memory then decoded.
The program counter is incremented.
3
Which one does not describe an effect of a faster processor?
Performing tasks in a shorter time
More tasks completed / second so software may respond faster
Allows more instructions to be run per second
Less cache needed
4
Non-volatile memory...
requires power to retain its data.
keeps its contents even when it has no power.
5
Why doesn’t doubling the amount of cores double performance?
Software needs to be designed to use multicore processing.
keine Ahnung
Not all processing tasks can be split evenly between cores.
6
Which one does not describe the impact of increasing RAM?
Can temporarily store more data in faster memory.
Higher speed therefore greater clock speed
Avoid use of virtual memory.
Allows more programs to be open at once without slowing comp
7
Why is multitasking needed in an OS?
Shares processing time between programs.
Allows more than one program to run at the same time.
Enables user to be more productive.
8
A machine that processes data is...
the ALU
an embedded system
the motherboard
a computer
9
A computer is more likely to run faster if...
it has less cores.
it has more cores.
10
Explain one reason why the cache size affects the performance of the CPU.
It is faster to transfer to and from cache than RAM.
Data is transferred faster which makes a CPU more efficient.
11
Files on hard disk moved, empty spaces collected together, files moved together. C’est quoi?
file sorting, to organise the files
disk defragmentation to overcome the issue of slow computer
12
Pick the one that doesn’t answer this question: Describe what is meant by 3MHz CPU.
3MHz is the clock speed.
Indicates how many instructions may be processed each second
Indicates how many clock cycles the processor can do at once
3MHz is how fast the processor is.
13
true or false: the internet is the same as the www
false
true
14
How many bits in a byte?
8
2
4
10
15
Describe how the ALU and Accumulator work together in the CPU.
ALU performs logical operations and accumulator stores them
ALU stores data 4 accumulator to perform logical operations.
Accumulator stores data 4 ALU to perform logical operations.
Accumulator performs logical operations and ALU stores them.
16
Embedded systems are dedicated to a single task, therefore...
they are cheaper to produce.
they’re more efficient at doing their task than general coms
they get depressed easily.
they are usually easier to design.
17
Volatile memory is...
temporary memory
permanent memory
18
More RAM can mean...
an increased use of virtual memory.
a faster or smoother system.
19
nic
directs data on network
allows individual devices to connect to network
carries data between devices on network
20
role of pc in client-server network
shows results from server
sends requests to server
processes requests
centrally stores files
21
RAM is...
secondary storage
primary storage
22
State the purpose of the CPU.
To carry out the processing on the computer.
To fetch and execute instructions.
To control the computer.
23
Some CPUs can be overclocked to make them run at a higher...
clock speed
dpi
bit rate
24
Benefit of cloud storage.
Need internet connection to access.
Cloud storage system would likely charge subscription fee.
Data is vulnerable to hacking.
Quick to access individual files.
25
ROM stands for...
human rights because that’s always been his passion.
Random Ovasive Memory
Read Only Memory
Random Origin Memory
26
The physical stuff that makes up the computer system:
hardware
wires
metal
software
27
Which of these is a characteristic of Von Neumann Architecture?
Data and instructions stored separately.
Data and instructions stored together.
28
Benefit of magnetic tape
It is always accessible
Very cheap per GB
Easily destroyed in fire.
Tape uses sequential access, so slow to find specific file,
29
RAM is...
high speed memory
slow memory
30
CPU stands for...
Computer Programming Unit
Central Processing Unit
Central Programming Unit
Computer Processing Unit
31
What is the main circuit board in the computer, where the hardware is connected?
single sided PCB
multilayer PCB
motherboard
ALU
32
ROM...
requires power to retain its data.
keeps its contents even when it has no power.
33
Drawback of cloud storage.
Quick to access individual files.
Data is vulnerable to hacking.
Need internet connection to access.
Cloud storage system would likely charge subscription fee.
34
How many KB in 1MB?
0.1
1.024
1000
1024
35
_____ doesn’t need to be frequently accessed.
secondary storage
primary storage
36
What stores the result of arithmetic calculations?
Accumulator
ALU
37
Which of these is not an embedded system?
Manufacturing equipment
Dishwasher
Sat nav
Video game console
38
RAM is..?
non-volatile memory
volatile memory
39
Which one is the odd one out?
magnetic hard disk drive
ROM
SSD
virtual memory
40
The programs or applications that a computer system runs:
hardware
software
41
ROM is...
secondary storage
primary storage
42
Virtual memory is used as extra...
RAM
ROM
43
Computers inside a larger system are...
specialised computers.
embedded systems.
44
How do the CPU AND RAM work together?
data is stored in RAM which is fetched by CPU
CPU holds data for RAM while RAM holds something else
RAM decodes data in fde cycle
45
Which is not a function of an OS?
Provides a platform for applications
To provide a space to store hardware
Provides a user interface
File and memory management
46
hardware needed for lan
wap
nic
ethernet cable
47
What is the most important component, that does all the processing?
CU
ALU
CPU
motherboard
48
RAM stands for...
Read Aloud Memory
Random Access Memory
Random A$$ Memory
Read and Access Memory
49
Non-volatile memory is...
permanent memory
temporary memory
50
hardware needed for wan
nic
wap
router
51
GPUs help CPUs process...
sounds
images
data
52
Registers used in Von Neumann Architecture.
MAR
MDR
Accumulator
PC
53
RAM is slower than (1), but way faster than (2).
(1) CPU cache (2) volatile memory
(1) CPU cache (2) secondary storage
(1) secondary storage (2) CPU cache
(1) ROM (2) CPU cache
54
Which one of these is not a computer system?
Etch-a-Sketch
Supercomputer
Calculator
Watch
55
Which security measure would an OS not provide?
data encryption
retina scanner
user account control / access levels
men in black suits stood by the doors ready to knock u out
56
benefits of LAN
can share hardware
can share files
i want to sleeeeeep
57
What supplies power to the motherboard, optical and hard drive, and other hardware?
yo mama
power supply
electricity
58
true or false: the internet is a lan
false
true
59
How much data does a CD hold (roughly) ?
70GB
70MB
700GB
700MB
60
Why do computers need systems software?
For the same reason you need your mother
To provide an interface between software and hardware.
61
causes of poor WiFi signal
objects/walls between device and wap could obstruct signal
devices could b far away from wap
the wifi just isnt feeling up to the job that day
additional nearby network cud b using same/overlapping chanl
62
peer to peer...
creates copies of files between computers
stores one file centrally
63
What is the number of instructions a single processor core can carry out per second (Hz)?
clock speed
cache size
64
RAM...
keeps its contents even when it has no power.
requires power to retain its data.
65
Which one does not describe an effect of installing a solid state drive instead of magnetic?
Faster access than magnetic drive
Quicker to load programs or files
Moving parts
Quicker to boot up computer
66
What extracts hot air from the computer case?
case cooling fan
CPU heat sink
67
PC...
stores the data that has just been fetched.
is incremented each time an instruction is run.
stored the address of the next instruction to be run.
stores the address where the next data will be fetched from.
68
GPU stands for...
Graphical Programming Unit
Graphics Programming Unit
Graphics Processing Unit
Graphical Processing Unit
69
Drawback of magnetic tape
Easily destroyed in fire.
It is always accessible.
Used sequential access, so slower to find specific file.
Very cheap per GB
70
MDR...
stores the address of the next instruction to be run.
stores the address where the next data will be fetched from.
is incremented each time an instruction is run.
stores the data that has just been fetched.
71
Describe the purpose of virtual memory.
Boot up computer.
Allows user to run programs there is insufficient RAM for.
Allows her to run more programs simultaneously with less lag
Keeps her memories virtually in case she gets amnesia.
72
The cache is...
much faster than RAM
much slower than RAM
73
true or false: the internet is a network between many networks
true
false
74
role of server in client-server network
centrally stores files / software
shows results from clients
processes requests
sends requests to clients
75
Difference between level 1 and level 2 cache?
Level 1 is quicker than level 2.
Level 2 is quicker than level 1.
76
What hardware is the internal secondary storage?
motherboard
hard disk drive
virtual memory
ROM
77
What contains the instructions needed for a computer to boot up?
ROM
RAM
78
Volatile memory...
requires power to retain its data.
keeps its contents even when it has no power.
79
ethernet cable
directs data on network
allows individual devices to connect to network
carries data between devices on network
80
client server...
creates copies of files between devices
stores one file centrally
81
ROM is..?
volatile memory
non-volatile memory
82
True or false? Each core in a CPU can process data independently of the rest.
false
true
83
WAN
communication medium is not owned by owner of computers
computers are geographically remote
i actually spent a whole day making this kahoot
dont cram on the last day kids
84
How many bytes in 1KB?
1000
1.024
0.1
1024
85
To recap: software is...
the less solid components of a computer, e.g. foam filler.
the programs or applications that a computer system runs.
86
The purpose of a computer is to...
output data then retake it and process it
take data, process it, then output it
play Minecraft
take data, output it, then process it
87
What is used for read/writing of optical discs?
motherboard
CD-RW
hard disk drive
optical drive
88
Which of these is not an input device?
Mouse
Keyboard
Speakers
Touch screen
89
ROM comes on a small, factory-made chip in the...
control unit
motherboard
hard disk drive
SSD
90
Which one is the odd one out?
ROM
volatile memory
primary storage
RAM
91
What is needed to successfully overclock a CPU?
large cache size
high performance cooling system
more than one core
patience
92
What keeps the CPU at a steady temperature?
thermoregulation
motherboard
heat sink
cooling fan
93
Describe the purpose of cache memory.
Smaller in size so technology can be smaller.
🤷♀️
Costs less per byte.
Technology can be more mobile
94
Topology?
mesh - every computer is connected to each other
star - see the lovely star in the middle? 🥰👌
95
MAR...
stores the data that has just been fetched.
is incremented each time an instruction is run.
stores the address where the next data will be fetched from.
stores the address of the next instruction to be run.
96
Gareth has a sat nav. Which of these statements is false?
ROM holds copies of open maps.
The contents of RAM is lost when the sat nav is turned off
ROM stores the boot up sequence of the sat nav
RAM holds copies of open routes and maps.
97
True or false? Doubling the number of cores doubles performance.
false
true
98
Explain how cache size affects CPU performance.
Cache is faster than memory.
is incremented each time an instruction is run.
Cache is stored just outside CPU.
More cache CPU has, the less time is spent accessing memory
99
What does antivirus software do?
scans the computer periodically to check for harmful code
like antivaccers but for viruses
100
LAN
its the day before my exam and i know nothing woop woop
restricted to small geographical area
gosh im tired
computers are connected to each other
101
Virtual memory is...
primary storage
secondary storage
102
How many bytes in 1MB?
1000
100,000
1,000,000
10,000
103
What is directly accessed by the CPU?
secondary storage
primary storage
104
External pieces of hardware, like the keyboard and mouse, are called...
add-ons.
exterior components.
USBs.
peripherals.
105
Four characteristics of secondary storage devices:
Mobility, portability, moveability, transportability
Size, speed, portability, cost
Size, mobility, portability, capability
Durability, capability, speed, cost
106
How many MB in 1KB?
0.1
0.001
0.01
0.0001
107
How many bytes in a nibble?
0.5
0.1
10
0.75
108
Pick the one that doesn’t answer the question: describe what is meant by quad-core CPU.
The cores work at different times.
The cores can perform multiple tasks.
The computer has 4 cores.
The cores are independent processors within the CPU.
109
Topology?
now this is a star - everything is just connected to the hub
spider web???
110
wap
directs data on network
allows individual devices to connect to network
carries data between devices on network
111
How many MB in 1GB?
1024
0.1024
0.1
1000
112
To recap: hardware is...
the physical stuff that makes up the computer system.
the applications that a computer system runs.
a computer that runs something physical, e.g. robot.
the material that a computer is made of.
