What is a network packet?

Data is broken down into chunks and sent across the Internet

A CPU is described as having two cores. What does this mean?

It can execute two instructions at the same time.

What is peer-to-peer networking?

Two devices can act as a client or a server, such as gaming.

What is the key difference between ROM and RAM?

RAM is volatile (loses data); ROM is non-volatile.

Fetches instructions from memory, decodes and executes them.

Which of these are two examples of meta data for a video file?

The number of frames per second and the video dimensions.

What is virtual memory?

The hard disk is used to store data to free up space in RAM.

What is an assembler?

Software that turns low level code into machine code.

Which of these are in the correct ASCENDING order?

bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte

Identify all the types of disk organisation software.

File Transfer, Formatting, Defragmentation

What does the following code do with the list?

Finds the difference between the maximum and minimum values

What is the difference between an IP address and a MAC address?

A MAC can't be changed (hardware) but an IP can (software).

What is SECONDARY STORAGE?

It describes devices used to store data for later use.

What is client/server networking?

One device as a server and the other device is the client.

What is an interpreter?

Turns code into machine code and executes it line at a time.

Turns code into machine code before executing it.

Which of these best describes a mesh topology?

All devices connected to every other device.

A network spread across a small geographical area.

What does a DNS server do?

Converts a URL into an IP address

Identify all of the system maintenance software.

System information and diagnosis, Automatic updating, System cleanup

What is PRIMARY STORAGE?

Primary storage is the same as main memory.

A standard way of representing characters within a computer.

A low-level language is...

A programming language closer to how a computer works.

When dealing with sound, what is a sample rate?

It how many times a sound is measured each second.

How many cycles a CPU performs per second

High Level programming is...

A programming language written in an easy-to-understand way.

An Operating System often manages multitasking. What exactly is multitasking?

Allowing multiple applications to be open at the same time.

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GCSE Computer Science Revision

76 termsStudBud Administration682 plays

#Revision for GCSE Computer Science

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Questions 76

Answers

1
Harry finds an image that is free for non-commercial use. Which licensing act may apply?
Computer Misuse Act
Creative Commons Licensing
Freedom of Information Act
Copyright, Designs and Patents Act
2
What is a network packet?
Data is broken down into chunks and sent across the Internet
Used to store data from an email.
Something your new phone comes in.
Data used to store mp3 files.
3
What is 1101101 + 00101001
11011010
11010100
10010111
10010110
4
Which of these is NOT a type of programming error?
Logic
Syntax
Runtime
Stupid
5
A CPU is described as having two cores. What does this mean?
It can execute instructions faster.
It can store more programs in main memory.
It can multiple bigger numbers within the CPU.
It can execute two instructions at the same time.
6
What is peer-to-peer networking?
Two devices work together but only wirelessly.
Two devices act as the client only.
Two devices act as the server only.
Two devices can act as a client or a server, such as gaming.
7
A frequency of 44KHz and a bit depth of 8. What is the storage needed for 30 seconds?
10,560,000MB
10.56MB
1.32MB
84.48MB
8
What is the key difference between ROM and RAM?
RAM is volatile (loses data); ROM is non-volatile.
RAM is non-volatile; ROM is volatile (loses data).
9
A CPU is...
Fetches instructions from memory, decodes and executes them.
The part of the computer that turns it on and off.
Software used to decode programs.
The part of the computer that stores all data.
10
Which of these are two examples of meta data for a video file?
The number of frames per second and the video dimensions.
Number of computers it has been played on and the author.
The number of frames per second and the name of the file.
The name of the file and how many bytes are stored.
11
What is virtual memory?
It's where data is stored in the cloud.
Memory that doesn't really exist.
The hard disk is used to store data to free up space in RAM.
It's where data is stored in shiny glasses from Samsung.
12
What is an assembler?
Software that turns machine code into low level code.
Software that turns low level code into machine code.
Software that turns machine code into high level code.
Software that turns high level code into machine code.
13
What is usually stored in RAM?
Software
Data and code
Programs and Data
Programs and files
14
A low level instruction is broken down into:
An instruction and an operand
An opcode and data
An instruction and data
An opcode and an operand
15
Identify all of the INPUT devices.
Keyboard
Headphones
Scanner
Microphone
16
Which of these are in the correct ASCENDING order?
bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte
terabyte, bit, kilobyte, gigabyte, nibble, megabyte, byte
nibble, terabyte, kilobyte, megabyte, byte, bit, gigabyte
terabyte, gigabyte, megabyte, kilobyte, byte, nibble, bit
17
This policy describes how people should use a system in a reasonable way.
Acceptable use
Backup
Archiving
Failover
18
Identify all the types of disk organisation software.
Backup
File Transfer
Formatting
Defragmentation
19
What does the following code do with the list?
Finds the average value.
Finds the difference between the maximum and minimum values
Finds the total.
Find the maximum and minimum values.
20
Which of these is NOT a security risk to a network?
Bucket and Spade Attack
Denial of Service Attack
SQL Injection
Brute Force Attack
21
What is the difference between an IP address and a MAC address?
A MAC can't be changed (hardware) but an IP can (software).
They are the stickers needed to install software.
They are both the same thing.
An IP (hardware) can't be changed but a MAC (hardware) can.
22
Sally has found out that someone has hacked into her bank account. Which act is relevant?
Computer Misuse Act
Data Protection Act
Copyright, Designs and Patents Act
Freedom of Information Act
23
What data type would you choose if the value to store is 0.05?
Boolean
Real
String
Integer
24
What gate does this symbol represent?
AND
XOR
NOT
OR
25
What is SECONDARY STORAGE?
It describes devices used to store data for later use.
It's the same as main memory.
It describes things like flash memory and SSD drives.
It describes the second drive in your computer.
26
What is client/server networking?
One device as a server and the other device is the client.
Two devices work together as the server.
Both devices are the client and the server.
Two devices work together as the client.
27
What is an interpreter?
Software that converts low level code into machine code.
Turns code into machine code and executes it line at a time.
Turns code into a form a user can read.
Converts high level code into machine code before executing.
28
What gate does this symbol represent?
OR
NOT
XOR
AND
29
Convert the denary number 156 into binary.
101001011
00011011
10011100
01110101
30
What is a compiler?
Turns code into machine code before executing it.
Turns code into machine code that the Internet understands.
Turns machine code into Internet-enabled high level code.
Turns code into a machine code and emails it.
31
What gate does this symbol represent?
OR
NOT
AND
XOR
32
What data type would you choose if the value to store is TRUE?
Boolean
Integer
String
Real
33
If you saw 192.0.17.81 what would you say it was?
A DNS location
An IP address
A MAC address
A URL
34
What data type would you choose if the value to store is 87?
String
Integer
Real
Boolean
35
Which of these best describes a mesh topology?
All devices connected on the same line.
All devices connected to a central node.
All devices connected in a ring.
All devices connected to every other device.
36
Which gate does the following truth table represent?
XOR
NOT
OR
AND
37
Which network topology has all other devices connected to a central node?
Mesh
Bus
Ring
Star
38
Which table matches the logic symbol?
D
B
C
A
39
What is a LAN?
A network spread across a large geographical area.
A network with printers.
A network spread across a small geographical area.
A network used only for school.
40
What does a DNS server do?
Converts a URL into a MAC address
Converts a MAC address into a URL
Converts a MAC address into an IP address
Converts a URL into an IP address
41
Identify all of the system maintenance software.
System information and diagnosis
Automatic updating
Antivirus
System cleanup
42
Which one of these is NOT a way of improving a wi-fi signal?
Change channel
Change frequency
Add a Wireless Access Point
Hit the router with a spade
43
What is PRIMARY STORAGE?
Primary storage is things like hard disk drives.
Primary storage is when you use SD cards.
Primary storage is the same as main memory.
Primary storage is your first hard disk drive.
44
What is ASCII?
A way of sorted data.
A standard way of representing characters within a computer.
A way of representing numbers inside a computer.
A way Apple computers represent ASCII.
45
A low-level language is...
A language that can only be used on mobiles.
A programming language that is easier to understand.
A programming language closer to how a computer works.
A language that only works underground.
46
When dealing with sound, what is a sample rate?
It's a way of representing sound in a computer.
It's how many different sounds a computer can understand.
It's a way of saving sound files for compression.
It how many times a sound is measured each second.
47
What is clock speed?
How quickly the hands of a clock spin
How many instructions a CPU can execute per second
How many cycles a CPU performs per second
How many times a CPU writes to RAM every second.
48
High Level programming is...
An extremely hard language only written for smart people.
A language that can only be used above 30 storeys.
A programming language written in an easy-to-understand way.
A programming language closer to how a computer works.
49
Identify all of the OUTPUT devices.
Plotter
Monitor
Speakers
OCR Reader
50
An Operating System often manages multitasking. What exactly is multitasking?
Plugging in a keyboard and mouse at the same time.
Something the male species (allegedly) can't do.
Allowing multiple applications to be open at the same time.
Doing everything at once.
51
Perform a logical shift left two places on 01001011
10001011
00100101
10010110
00101100
52
What is meant by the term metadata?
It's compressed data.
It's data that is used to describe data.
It's data that describes how a file is stored.
It's data that has been removed from a file.
53
Cache memory is...
Type of memory that is hidden from the user.
Expensive memory.
Small, very fast RAM memory within a computer.
Small, very fast ROM memory within a computer.
54
What is the difference between lossy and lossless compression?
Lossy = some data permanently lost. Lossless = no data lost
Lossy = no data lost Lossless = some data permanently lost.
55
Larry is recording sound at 44KHz and a bit depth of 16-bits. What is the bit rate?
7,400,000 bits
704kbps
0.74mbps
704,000bps
56
What is the binary number 11110110 in denary?
221
108
246
214
57
What is the value of p at the end of this algorithm?
4
2
70
17
58
What is a URL?
An easy to remember address for a website
Something a DNS needs
The geographical location of a website.
An IP address location.
59
Which one of these is INCORRECT?
doc = text file
mp3 = audio file
mp4 = video file
jpg = image file
60
Which of these is NOT a feature of an Operating System?
Security
Playing games.
Memory management
User interface
61
What is the difference between a hub and a router?
Hub sends where it needs to a router sends it everywhere
Hub sends data to everywhere, a router only when it needs to
A router is cheaper than a hub
A router is only used for wi-fi
62
Re-order the storage capacities shown into ascending order.
1300GB, 0.22GB, 220,000KB, 1.2TB, 178MB
178MB, 220,000KB, 0.22GB, 1.2TB, 1300GB
178MB, 0.22GB, 220,000KB, 1.2TB, 1300GB
178MB, 1300GB, 0.22GB, 220,000KB, 1.2TB
63
Identify all of the STORAGE devices.
Mobile Dongle
USB memory stick
Hard Disk Drive
Solid State Drive
64
What is cache memory?
Very fast memory within the CPU
RAM
ROM
Expensive memory only for rich people.
65
Gary wants to find out the number of pizzas sold in a week by the school canteen. Which act?
Freedom of Information
Creative Commons
Computer Misuse
Data Protection
66
What is a character set?
ASCII.
A way of representing lots of different characters.
A defined set of character codes a computer understands.
A type of computer game.
67
What is the hex number 16 in denary?
16
22
25
23
68
What data type would you choose if the value to store is "Our exam is next week!"?
Integer
String
Boolean
Real
69
What does a router do?
Converts an IP address into a MAC address
Decides where to send data to on a network
Virus checks data packets on their way through
Allows Wi-Fi access to a network.
70
Which gate does the following truth table represent?
AND
XOR
OR
NOT
71
Identify all of the types of utilities software.
Antivirus
Spyware protection
Defragmentation
Firewall
72
Which of these is NOT a benefit of a network?
Sharing of files.
Increased security.
Sharing of resources
Files backed up automatically.
73
Flash memory is...
Storage of data using memory chips that are non-volatile.
Storage of data that uses a magnetic charge.
Storage of data that is optical.
Memory chips that are used to store data.
74
Have you got some paper and a pen?
No
Yes
75
Which gate does the following truth table represent?
OR
AND
NOT
XOR
76
What is the Internet?
A network of computers across the world.
It's the same as the World Wide Web.
A small network of computers in a home.
It's a way of sending emails across to your mate.

GCSE Computer Science Revision Flashcards | StudBud