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WorksheetsOCR GCSE Computer Science - J276 1.1 - 1.7
Total questions: 91
Worksheet time: 46mins
What doesn’t affect the performance of the computer
Clock Speed
Number of Cores
The number of instructions in the program
Cache Size
If the processing speed goes from 1GHZ to 4GHZ and the processor is changed from an 8 core to a dual core processor – what is the exact effect on the performance of the computer?
The number of instructions executed per second quadruples
The number of instructions executed per second doubles
The number of instructions executed per second stays the same
The number of instructions executed per second is halved
Firmware in which software and hardware are integrated on a circuit board is often used in what type of system?
Point of Sales System
Desktop System
Embedded System
Operating System
Which is an example of an Embedded System:
PCs
Washing Machine
Laptops
Tablets
Processors don’t do the following
Operate in Hz
Execute Data
Execute Instructions
Process Data
The part of a processor in which instructions are executed is known as?
Core
Centre
Instruction Centre
Execution
What acts as an intermediary between the processor and the Main Memory?
Clock
Cache
Bus
User
What is held in cache?
All of the programming instructions
Instructions that have been processed
Commonly used instructions and data
Data that hasn’t been used for a long time
Moore’s Law?
The performance increase of computers would eventually halt in 2020
That the number of cores on a processor would double every year
Predicted that the number of transistors on a circuit board would double ever year
Computers would be capable of thinking and learning for themselves by 2020
If the processing speed goes up from 1GHZ to 4GHZ and the number of cores goes from 1 to 2 – what is the exact effect on the performance of the computer?
Quadrupled
Eight Times faster
Sixteen times faster
Doubled
If the processing speed goes up from 1GHZ to 4GHZ and the number of cores goes from 1 to 8 – what is the exact effect on the performance of the computer?
Sixty Four times faster
Sixteen times faster
Eight Times faster
Thirty Two times faster
What component holds the address of the next instruction
Memory Data Register
Accumulator
Memory Address Register
Program Counter
This holds the number of the current instruction being worked on
Memory Address Register
Program Counter
Memory Data Register
Accumulator
This would reduce the number of memory/processor transfers
Arithmetic Logic Unit
Control Unit
Accumulator
Cache
This sends signals such as “I/O Read”
Control Unit
Arithmetic Logic Unit
Accumulator
Cache
This sends signals such as “Memory write”
Control Unit
Cache
Arithmetic Logic Unit
Accumulator
What is held in ROM?
Operating System
Data currently in use
Bootstrap Loader
Instructions frequently used
Which component generates addresses
Secondary Storage
Processor
Main Memory
Control Unit
What is transferred down the data bus?
Data only
Addresses only
Data
Instructions and Addresses
Data and Instructions
What is the purpose of the accumulator?
To hold the results of a calculation
To hold the accumulation of instructions that are about to happen
To hold the accumulation of instructions that have happened
To perform arithmetic operations
What is a standalone computer?
A computer that is not connected to a network
A computer that is being used as a server
A computer that does not have any peripherals attached to it
A computer that is only used by one person
Which of these is a characteristic of a LAN?
It covers a wide geographical area
Computers are connected together using a leased line or a satellite
User can share files and peripherals
Data can only be transmitted at a slow rate
Which of these is a characteristic of a WAN
It covers a small geographical area
Normally has a lower bandwidth than a LAN
It is contained within one building
User are not able to share files and peripherals
Which of these statements is true?
A client-server network has a central computer that provides services to the rest of the network
A client-server network is cheap and easy to set up
A client-server network cannot be used to share files
Each computer on a client-server network is maintain separately
Where are you most likely to find a peer-to-per network?
In a large organisation
In a home
In a large office
Across several offices in a company
Which of these is a benefit of a peer-to-peer network?
Antivirus scans can be run across all computers from one computer
All software updates can be run across all computers from one computer
All computers can be maintained from one computer
Files and peripherals can be shared
Which of these is the correct definition of a router?
Forwards data packets along a network
Corrects errors that are found in data packets
A type of transmission media that provides the greatest bandwidth
A server within a network
Which transmission media is capable of having a much higher bandwidth?
Coaxial
Twisted pair cable
Plastic
Fibre optic
Which type of transmission media is the least expensive to manufacture?
Coaxial
Twisted pair cable
Plastic
Fibre optic
Which of these components is internal to a computer and is required to connect the computer to a network?
Wireless Access Point
Network Interface card
Switch
Hub
What is meant by latency in the performance of a network?
The amount of time data takes to travel from the source to the destination
The maximum rate that data can be transferred at
The number of errors that are found in a data packet after transmission
The route a packet takes when it is being transmitted
Which if these terms refers to the maximum rate at which data can be transferred?
Error detection
Packet switching
Bandwidth
Transmission media
What is meant by a data packet?
A unit of data that travels along a network
The number of error found in data when it has been transmitted
The data a computer needs to connect to a network
A connection point in a network that allows data to be shared
What is meant by a virtual network?
A network that is controlled by a central server
A network that is used only to share software
Controlling computers and devices remotely using the internet
A network that is built using only wireless connection points
Which of these is a benefit of virtual network?
They have a higher level of security than other remote connections
There is no need for any hardware to connect a computer to a network
There is no need for any software to connect a computer to a network
They stop any errors occurring in the transmission of data in a network
: Which of these is a correct definition of DNS?
An internet service that is used to detect errors
An internet service that stores data in large quantities for different companies
An internet service that provides a messaging service for users to communicate
An internet service that translates alphabetic names into IP addresses
What is meant by hosting?
A service that allows individuals and organisations to make their website available on the world wide web
A service that creates websites for companies
A service that transmits data in a network
A service that translates alphabetic names into IP addresses
What is cloud computing?
Storing large amounts of data on a single computer
Using the internet to store and access data and programs remotely
Storing hard copies of data as a backup
Using the internet to communicate with other users
What problem can occur through using cloud computing?
There can be privacy and security issues
More hardware needs to be added to a company network to store data
Only a small amount of data can be stored
Only a small amount of software can be stored
Which of these is a benefit of cloud computing?
It can reduce costs for a company as they do not need to buy additional hardware to store data
It is the cheapest option for a company to store their data as they do not need to pay for cloud computing
Data can be accessed anywhere as an internet connect is not needed to access data and software stored in cloud computing
Data will always be more secure in a cloud computing system
What is the purpose of Utility software?
To keep the computer maintained and in working order
To control how the computer operates
To manage resources available to hardware
What is the purpose of an Operating System?
To keep the computer maintained and in working order
To control how the computer operates
To manage resources available to hardware
What is the purpose of a user interface (as a part of the operating system)
Provides a method to communicate with the system
Is a graphical layout
Is user management
Allows users to have different accounts
What is the purpose of peripheral management (as a part of the Operating System)?
Provides a method to communicate with the system
Manages your programs
Allows the Operating System to manage the hardware devices
Allows users to have different accounts
What does a full backup entail?
Makes copies only of the new files
Saves your backup to secondary storage
Makes copies of all files
Only allows you to make a double copy
What does an incremental backup entail?
Makes copies only of the new files
Saves your backup to secondary storage
Makes copies of all files
Makes a copy of the entire drive
Which of the following are examples of Utility Software?
Word Processor
Anti-virus software
Web Browser
Disk Defragmenter
Fortnite
Which of the following are examples of Application Software?
Word Processor
Anti-virus software
Web Browser
Disk Defragmenter
Fortnite
Which tasks are the memory manager responsible for (as a part of the Operating System)
Swapping applications and data between RAM and virtual memory
Allocated sections of memory to applications
Communicating with peripheral devices connected to the computer
Allows the end user to control the computer effectively
Which of the following memory and CPU management functions does the OS perform in order to allow the system to multitask
Each application is allocated a different memory space so that their data does not interfere with each other
The OS moves unused parts of memory to storage and swaps it out as necessary
The OS splits CPU cycles up between open applications
The OS Prioritises processes so that instructions are executed in an efficient order
If a file is fragmented it means that....
It is broken and no longer readable
Parts of the file are scatters in different places on the hard disk
Parts of the files data has been deleted and cannot be recovered
Parts of the file are stored sequentially on the hard disk
The purpose of a disk defragmenter is to...
Recover deleted files from the hard disk
To move applications from RAM to the hard disk
To put together sections of files which are physically separated on a hard disk
To remove files which are no longer needed
Why would it be ill advised to run a disk defragmenter application on an SSD
SSDs have more moving parts so they wear more easily
The location a file is stored on an SSD does not affect how quickly it can be accessed
SSDs are fast enough it doesn't matter
Moving files physically on the SSD can contribute to wear and can reduce their lifespan
This method of backup is quicker to perform once an initial backup file is created.
Incremental
Differential
Full
Fragmented
This type of back-up is quicker to restore from?
Incremental
Differential
Full
Fragmented
This type of back-up is slowest to restore from?
Incremental
Differential
Full
Fragmented
Which of the following is not a type of storage.
Optical
Magnetic
Solid State
Hard Drive
What type of storage is a DVD ROM?
Optical
Magnetic
Solid State
It is not a storage device
What type of storage is a USB memory stick?
Optical
Magnetic
Solid State
It is not a storage device
What type of storage is a SSD?
Optical
Magnetic
Solid State
It is not a storage device
What type of storage is a HDD?
Optical
Magnetic
Solid State
It is not a storage device
Which of the following types of storage would likely access its data the fastest?
Optical
Magnetic
Solid State
They are all the same
Which of the following types of storage is the most durable?
Optical
Magnetic
Solid State
They are all the same
Which of the following types of storage is the most expensive per MB/GB?
Optical
Magnetic
Solid State
They are all the same
Why is a Hard Disk Drive (HDD) not very portable?
It has moving parts
It is too large
It will break if you touch it
It is too small
Why does a laptop need secondary storage?
To backup files to move to another computer
To store data, files and software when the power it off
To store programs that are currently in use
To store data that the processor is currently using
Which type of storage uses lasers to write the data?
Optical
Magnetic
Solid State
All types
The types of storage are listed below from fastest to slowest. Which order is correct?
Solid State, Optical, Magnetic
Optical, Magnetic, Solid State
Magnetic, Optical, Solid State
Solid State, Magnetic, Optical
The types of storage are listed below from least expensive per GB to the most expensive per GB. Which order is correct?
Solid State, Optical, Magnetic
Optical, Magnetic, Solid State
Magnetic, Optical, Solid State
Solid State, Magnetic, Optical
The types of storage are listed below from the most reliable to the least reliable. Which order is correct?
Solid State, Optical, Magnetic
Optical, Magnetic, Solid State
Magnetic, Optical, Solid State
Solid State, Magnetic, Optical
Which is the smallest of these data capacities?
2 KB
2049 Bytes
0.5 MB
3 GB
Which is the largest of these data capacities?
2048 MB
2 GB
2050 MB
100,000 KB
