Yr 11 Mock Paper 1

Question 1

What does the term “ROM” Stand for and what does it store?

Answer 1

ROM stands for read only memory. This stores the start-up instructions
for a computer and cannot be changed

Question 2

What does the term “RAM” Stand for and what does it store?

Answer 2

RAM stands for random access memory. This stores the instructions and
data that are currently being used.

Question 3

What does the term “Cache memory” mean?

Answer 3

Memory located close to the processor that allows faster access than from RAM

Question 4

State the purpose of a CPU?

Answer 4

CPU performs the FDE cycle
or….
* Process instructions

Question 5

What does the term single core mean

Answer 5

• Single core means there is only one processor

Question 6

State what is meant by a single core 2.5 GHz processor?

Answer 6

Single core means there is only one processor
* 2.5Ghz means it can run 2.5 billion FDE cycles per second

Question 7

Von Neumann architecture includes registers.
Identify two registers used in Von Neumann architecture.

Answer 7

PC (Program Counter)
Accumulator (Performs calculation )
MDR
MAR

Question 8

Identify and describe two functions of an operating system

Answer 8

user interface
* allows the user to communicate with the hardware
* e.g. GUI/command prompt

• allows the user to input data
• outputs data to the user
• memory management / multitasking
• moves data between RAM and VM
• gets data from RAM
• stores data to RAM

Question 9

State the purpose of utility system software?

Answer 9

Perform housekeeping
or
maintenance tasks

Question 10

Layla uses a backup utility. She performs both full and incremental backups.

Explain the reasons why Layla performs both full and incremental backups

Answer 10

full backup will copy every file and all data

• incremental will only copy files/data that have changed
• …incremental can only be done once a full backup has been completed
• …reduces time taken to backup each time
• …reduces storage/memory used to backup

Question 11

one benefit and one drawback of Layla releasing her game as open source

Answer 11

benefit : other people can improve the program

drawback : cannot charge a fee //
other people can use her code..

Question 12

Describe the environmental impacts of the company bringing out new devices twice a year

Answer 12

• …increasing pollution / e-waste
• …that will not degrade
• new equipment uses up natural resource

sold devices may just be thrown
* …that will not degrade
* new equipment uses up natural resources

Question 13

Describe the cultural impacts of the company bringing out new devices twice a year.

Answer 13

people may feel their devices are out-ofdate
* increased cost
* social pressure to keep up-to-date
* increase digital divide

Question 14

Describe what the internal secondary storage device will store

Answer 14

Software / applications / programs
* …including OS
* files

Question 15

Give three benefits of the tablet having a solid state device instead of a magnetic device

Answer 15

faster access/read/write speed
* Smaller in physical size // more compact // weighs less
* More durable/robust
* Uses less power
* Runs cooler
* Quieter when running

Question 15

Give two drawbacks of the tablet having a solid state device instead of a magnetic
device

Answer 15

limited number of read/write times
* more expensive (per byte)
* (usually) smaller capacity

Question 16

Describe the difference between a LAN and a WAN

Answer 16

• LAN is small geographical area
• WAN is over a large geographical area

Question 17

Identify one other factor that can contribute to the performance of a network

Answer 17

Error rate
If using wireless or wired
Bandwidth

Question 18

Describe the threat malware can pose to the university’s network and give a prevention method

Answer 18

PREVENTION
anti-spyware
* anti-malware
* anti-virus
* firewall

EXPLANATION
an delete/corrupt files/data
* can change files/data
* can prevent the users accessing files
* can replicate through (all connected) devices
* record keypresses and transmit to third party
* steal data
* slow network speed // block access to network

Question 19

Describe the threat a brute force attack can pose to the university’s network and give a
prevention method that the university can use.

Answer 19

PREVATION
firewall
* strong password
* two-step verification

EXPLANATION
gains access to user’s account//access your password
* …can access (private/confidential) data
* …can edit data
* …can delete data
* …can install malware
* …use your gained password elsewhere
* …block your access to your account

Question 20

Is POP

Question 21

Identify any legislation misus act

Answer 21

Copyright Designs and Patents Act (programmer wants to protect their work from being copied or distributed.)

• Computer Misuse Act (A person logs into a computer without permission by guessing the password.)
• Freedom of Information Act ( provides public access to information held by public authorities)
• Computer Misuse Act (A hacker gains access to a company’s files over a network without permission.)
• Data Protection Act (A company collects data that it does not need about its customers)

Question 22

Describe what is meant by a virtual network.

Answer 22

using a software layer to apply security restrictions over a physical network

Question 23

How do you prevent unauthorised access
to computer?

Answer 23

Firewall
//(strong) password
//physical security
// access rights
//security questions
// two-step authentication

Question 24

How do you prevent Virus

Answer 24

Anti-virus //malware // firewall //network restrictions // do not plug in unknown storage devices

Question 25

How do you prevent Data interception

Answer 25

// Encryption

Question 25

How do you prevent Phishing

Answer 25

// Firewall // do not click on unknown links // spam filter // education about what to do/not do // check sender/website to see if real/fake

Question 26

Name two other threats to the data in a computer system and give a method of preventing each.

Answer 26

Spyware (1) anti-spyware (1) Pharming (1) Check web address is valid(1) DOS/DDOS (1) Use of proxy server/firewall (1) Ransomware (1) Use of antimalware (1) SQL injection (1) Network forensics/suitable form validation(1) Social engineering // people as a weak point(1) training (1) Poor network policy (1) education/setting rules (1) Hardware failure/loss (1) Backup (1)

Question 27

Explain why network uses a peer-to-peer model and not a client-server model.

Answer 27

No server (required for client-server) * Computers will have software installed/updated individually * Less initial cost / maintenance * Specialist required to setup client-server * Easier to add new devices * Lesser need for file sharing

Question 28

Describe the benefits and drawbacks of storing her files on the cloud.

Answer 28

Benefit * Can access files from any device * May be free of cost * Easier to increase storage capacity (not memory) * Can be used a backup in case of data loss Drawback * Cannot access files if no Internet access * Not in control of security (bod less secure) * …data may be hacked/stolen * May cost monthly fee

Question 29

What does the term "Register" mean?

Answer 29

A small piece of memory that can hold an instruction or

Question 30

What does the term "Cache"

Answer 30

High speed memory that stores recently used instructions

Question 31

What does the term "Control Unit (CU)"

Answer 31

Sends signals to direct the operations

Question 32

What does the term "Arithmetic Logic Unit"

Answer 32

Performs mathematical operations

Question 33

Give three additional examples of utility programs

Answer 33

// Backup * Encryption * Compression * Firewall * Anti-virus // anti-malware * Anti-spyware // anti-malware

Question 34

After defragmentation, Ali’s computer is able to access files faster. Explain why Ali’s computer can access the files faster after defragmentation

Answer 34

// Less physical movement saves time //fewer individual accesses

Question 35

Explain how defragmentation will change how the files and free space are arranged on hard disk?

Answer 35

1 mark for: * Collate free space together Max 2 from * Collate file fragments together/contiguously

Question 36

Each packet has a header. State three items of data that would be contained in a packet header.

Answer 36

Destination IP/address * Sender IP/address * Packet Number * Packet size * Number of packets

Question 36

Describe the purpose of ROM

Answer 36

Stores data that must be retained when the computer turns off OR.... Store BIOS

Question 37

Ali thinks his tablet is an embedded system. State whether Ali is correct or incorrect, justifying your choice

Answer 37

Choice: Embedded system has one/few functions Justification: * ….the tablet may only be able to perform a small number of tasks

Question 38

Fill in gaps The operating system provides a user .................................................... . This displays the output to the user and allows the user to interact with the .................................................... .

Answer 38

The operating system provides a user interface. This displays the output to the user and allows the user to interact with the hardware.

Question 39

The operating system controls the movement of data from secondary storage to .................................................... and vice-versa. This is known as memory management

Answer 39

to... *RAM*

Question 40

An operating system allows device .................................................... to be installed to allow an external piece of hardware to interact with the .................................................... . To be installed to allow an external piece of hardware to interact with the .................................................... .

Answer 40

device... *drivers* with the.... *password* the.. *processor*

Question 41

The operating system can only perform one process at a time, but by managing the memory the computer can appear to be completing more than one process at a time. This is known as .................................................... .

Answer 41

as....*Multi-tasking*

Question 42

The operating system provides security through user accounts and ................................. It also creates and maintains a file system to organise files and ................................

Answer 42

accounts and *passwords*. and *directories*