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Revision - OCR J276 Computer Science Paper A Computer Systems Flashcards | StudBud
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Revision - OCR J276 Computer Science Paper A Computer Systems
Revision - OCR J276 Computer Science Paper A Computer Systems
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OCR J276 Paper A Computer Systems #Computer Science #Paper A
Flashcards
60 cards
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Questions
60
Answers
1
Why do packets have a header?
To check the packet with a check sum.
To carry the data, Payload.
To know the source and destination for the packet.
2
Which is the correct order for units of storage, Smallest to largest?
Byte, KB, LB, GB, YB
Byte, MB, KB, GB, YB
Byte, KB, MB, GB, TB
Byte, MB, KB, GB, TB
3
Which network topology is the most common in small businesses?
Star
Mesh
Bus
Ring
4
Which Law; Protects against harmful network attacks?
Data Protection Act.
Copyright Designs and Patterns Act
Computer Misuse Act
Freedom of Information Act
5
What unit of storage would be the best to use to represent a HD film on a on a computer?
GB
TB
KB
MB
6
What is the name of the process where secondary storage is used to extend primary storage?
Virtual Memory
Vivid Memory
Volatile Memory
Vital Memory
7
What does the BIOS allow you to do?
Change the data and time.
Overclock your CPU.
Change fan speeds for the fans connected to the Motherboard
Choose the Boots Device, storing the OS.
8
What is the definition of a network?
One or more computers connected together.
Connected devices
Two or more computers connected together to allow sharing.
Communicating devices
9
Which of the following is not a Server?
Print Server
Game Server
NAS
Application Server
10
Which of the following, holds the memory address that is about to be used by the CPU?
MAR
Accumulator
MDR
Program Counter
11
What is an advantage of using embedded systems?
They are usually smaller than multi purpose computers.
They can be put inside things.
They are usually less powerful.
They are cheaper to buy.
12
What is the purpose of the cloud?
To provide 24/7 access to data and services.
To provide services.
To allow streaming.
To store data.
13
Which type of backup is used to, backup new and edited files?
Full Backup
Incremental Backup
14
What does a DNS Server do?
Resolves domain names to MAC addresses
Allows users to connect directly to a websites server
Resolves domain names to IP addresses
Allows networks to access the internet
15
Which of the following are the main CPU performance factors?
Clock Speed, Cores, Cache Levels
Clock Speed, Cores, Cache Size
Function Speed, Cones, Cache Size
Function Speed, Cores, Cache Levels
16
What is the purpose of the ALU?
Control of the CPU and the Fetch decode execute cycle.
To perform Arithmetic and logic operations (AND OR NOT).
17
What device is this ?
Mother Board
Random Access Memory
Hard Drive
Solid State Drive
18
What piece of software is installed on a computer to prevent incoming malware?
Firewall
Anti-Malware
Anti-Virus
Disk Clean-up
19
How many sections is the CPU split up into?
1
3
2
4
20
Which security method, monitors a network to find the cause and perpetrator of an attack?
Network forensics
User Access levels
Penetration Testing
Firewalls
21
Which type of network security involves hacking a network to expose its flaws?
Network forensics
Firewalls
Penetration Testing
User Access levels
22
Which of the following contains all the sections of the CPU?
Arithmetic Link Unit, Immediate Access Store, Control Unit
Arithmetic Logic Unit, Immediate Access Store, Command Unit
Arithmetic Logic Unit, Immediate Access Store, Control Unit
Arithmetic Logic Unit, Instant Access Store, Control Unit
23
Which type of Storage is Non-Volatile?
Primary Storage
Secondary Storage
24
Which of the following is an advantage of a Mesh network?
Easier to extend the network
Easy to manage
Redundant parts in case of failures
Cheap to set-up
25
Which of the following do Operating systems not do?
CPU Management
Drivers - Control Inputs/Outputs
Internet Connectivity
Memory Mangement
26
Which of the levels of Cache has the highest storage?
Level 2
Level 3
Level 1
27
Which of the following is; a Computers Physical location on a network, described by numbers?
IP address
MAC Address
28
Which of the following is not utility software?
Defragmentation software
Driver software
Encryption software
Data Backup software
29
Which type of storage device has the fastest transfer speeds?
Solid State Drive
CD-RW
Hard Disk Drive
USB Drive
30
What Topology is shown in the Image?
Star
Bus
Mesh
Ring
31
Which of the following is a collection of protocols?
SMTP
HTTP
TCP/IP
FTP
32
Which network topology is the internet?
Bus
Ring
Mesh
Star
33
What is an advantage of wireless networking?
Easier to add devices to the network.
Requires specialist equipment.
Cheaper to set up.
Is not affected by objects in the way of the signals.
34
What aspect of performance can Secondary storage have an affect on?
OS load speeds.
Transfer speeds to network drives.
Storage of more installed programs and data.
Load speeds of websites.
35
Which of the following is the correct CPU data requesting order?
Cache, Registers, SSD/HDD, RAM
Registers, Cache, RAM, SSD/HDD
Cache, Registers, RAM, SSD/HDD
Registers, Cache, SSD/HDD, RAM
36
What is the purpose of the CU?
To perform Arithmetic and logic operations (AND OR NOT).
Control of the CPU and the Fetch decode execute cycle.
37
What is a WAN?
A network over one site or small geographical area.
A network over multiples sites or large geographical area.
38
What is the purpose of ROM
To store Boot Up information.
To hold the BIOS.
To store active parts of programs.
To never forget.
39
Which of these describes a partial mesh network?
Some nodes have multiple connections, all have at least one.
Cheaper as not as many connections required.
All nodes are connected to every other node.
Very fault tolerant as there are many redundancies.
40
What is a Stakeholder?
Someone who is affected by a decision
Someone who isn't affected by a decision
Someone who is involved in a decision
Someone who designs technology
41
Which of the following describes Open-Source Software?
The creator provides all updates.
Has a large community who fixes software.
Allows a user to edit a program to fit their need.
Users cannot edit the programs source-code.
42
Which Law; Allows members of the public to access information held by public organisations?
Computer Misuse Act
Copyright Designs and Patterns Act
Freedom of Information Act
Data Protection Act.
43
Which of the following attacks involves bots, who provide extreme traffic to a network?
Data Interception.
DDOS.
Social Engineering.
Brute Force Attack.
44
Which layer; Splits data into packets and checks that they are sent/delivered correctly?
Layer 3 - Transport Layer
Layer 2 - Network Layer
Layer 1 - Data Link Layer
Layer 4 - Application Layer
45
Which Law; Protects the data of people who ave information stored about them on a computer?
Computer Misuse Act
Copyright Designs and Patterns Act
Data Protection Act.
Freedom of Information Act
46
What is an embedded system?
A device that has one dedicated purpose.
A device within a device.
A device that has multiple purposes.
A small computer.
47
Which of the following, holds the memory address of the instruction for the current cycle?
Program Counter
Accumulator
MAR
MDR
48
What category does E-Waste fall under?
Ethical Issues
Cultural Issues
Legal Issues
Environmental Issues
49
Which type of attack requires an attacker to forcefully guess a users password?
Data Interception.
Brute Force Attack.
Social Engineering.
DDOS.
50
What is utility software?
Is software that manages a computer
Is software that protects a computer
Is software that fixes and runs computers
Is software that configures and maintain a computer
51
Which of the following are not Internet Services?
Streaming audio and Video.
File Sharing.
Applications
Emailing.
52
Which Law; Makes it illegal to share any copyrighted files without the holders permission?
Data Protection Act.
Copyright Designs and Patterns Act
Freedom of Information Act
Computer Misuse Act
53
What is the job of defragmentation software?
To remove unwanted files
To fix broken programs
To move files in the system
Rearranging fragments of a program into fewer fragments
54
Which of the following describes P2P?
Contains a client and a server. One requests and one serves.
Each computer stores and serves data.
55
What piece of software is installed on a computer to remove harmful malware?
Firewall
Anti-Malware
Disk Clean-up
Anti-Virus
56
Which layer; Is the physical connection on the network, signals are sent here?
Layer 2 - Network Layer
Layer 3 - Transport Layer
Layer 1 - Data Link Layer
Layer 4 - Application Layer
57
Which of the following has an incorrect performance factor of Secondary Storage?
Reliability, Durability, Mobility
Price, Capacity, Portability
Capacity, Portability, Durability
Portability, Read/Write speed, Bootability
58
What is a register?
A Store of data in the CPU with multiple levels.
Stores active parts of programs.
A small storage of data.
A store of data, in the CPU holding a number or instruction.
59
How can business's protect their data from threats?
Screen Protectors
Strong user passwords
Hierarchy of Users
All of the above
60
Which of the following is not a feature of an Operating System?
User interface
File mangement
Manages Peripherals
Anti Virus software
