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WorksheetsYear 8 - Computing Overall - JCA
Total questions: 92
Worksheet time: 38mins
CPU stands for...
Central Processing Unit
Control Processing Unit
Central Pricing Units
Control Pick United
The Fetch operation does what?
Fetches the next instruction and any data involved from main memory
Carries out any instructions requested by the CPU
Decodes the instructions and carries out them
Takes any instructions and any data involved in the request from Storage
PC in this cycle stands for
Personal Computer
Programable Computer
Program Counter
Plastic Core
In the decode stage, what does CU stand for?
Control Unit
Counting Unit
Computer Unit
Core Unit
Execute Stage - depending on what the instruction is, this part could be involved in three things. They are...
Save instructions to storage, load data from ROM or preforming an operation.
Fetching data from memory, storing data to memory or preforming an operation.
Decode instructions from memory, load data from memory or delete data from memory.
Decode binary, load binary into storage or duplicate binary.
What is another word used for memory in this cycle?
RAM
ROM
REM
RUN
What does the Decode stage do?
It looks at website code and decodes it for humans to understand.
It carries out the instructions sent to it from the Fetch stage.
It determines how many operations are needed and the steps to be taken.
Fetches the instruction from the main memory.
_____________ has mechanical parts move over the disks surface to read and write data magnetically.
Cloud
Magnetic
Optical
Solid State
True or False - Non-volatile means it keeps its content when the power is switched off.
True
False
_____________ storage can be easily damaged or scratched.
Cloud
Magnetic
Optical
Solid State
When applications or programs are loaded, they are copied into RAM from where?
ROM
Hard disk
CPU
Memory
When RAM starts to run out of space and you want to run a program that needs more memory than you have free, what happens to it?
It uses read-only memory for this program.
It uses virtual memory, which is part of the hard drive.
It uses more cores to process this request.
It uses power from secondary storage.
There are four factors that affect the CPU performance, they are? One of which is Cache Size, select the other three answers.
Cache Type
Clock Time Zone
Clock Speed
Number of Cores
Cache Location
The purpose of cache memory is
Temporarily hold data/instructions that the processor is likely to reuse
To store data/instructions the processor hardly uses
To help with turning on and shutting down a computer
To hold on to every file the computer stores
One cycle per second = 1 Hertz (Hz) = 1 operation carried out each second. Using this, how many operations will 3.5 Gigahertz (GHz) carry out?
3.5 cps
3,500 cps
3,500,000 cps
3,500,000,000 cps
A quad-core processor has how many processors in the same integrated circuit, linked together?
(a)
One benefit of cache is...
Allows the CPU to save more files to storage
The CPU alone needs one core processor
Reduces the time that the CPU has to wait for data from main memory
Reduces the amount of lag when playing online video games
RAM can often be referred to as (a) memory.
1 Hertz (Hz) = 1 operation carried out per second, how many operations will 3.8GHz complete?
3.8 ops
3,800 ops
3,800,000 ops
3,800,000,000 ops
A disadvantage of a Solid State Drive is...
Less storage capacity
You cannot access data without an Internet connection
Slow write speed
Sealed unit, hard to fix if broken
ISP stands for what...
Internet Safety Protocol
Internet Safety Provider
Internet Status Protocol
Internet Service Provider
How does a wireless network send data through the air?
3G
Ultrawaves
Radio waves
Bluetooth
What does a hub do?
It connects several computers together and messages send via it.
It connects two computers together.
It connects external hardware to a computer.
A hub allows access to all files stored on a computer.
Which ocean was the first cable laid across?
Arctic
Indian
Pacific
Atlantic
Connection speeds are measured in...
Sbps
Mbps
Cbps
Nbps
What is broadband?
A high-speed connection to the internet
Using a hub to connect to the internet
Connecting to the internet using hotspot
Using a USB cable to connect to the internet
This symbol means...
Charging
Loading
Working
Buffering
Upload speeds are usually much slower than download speeds. Why? 2 Correct Answers
Most users spend much more time downloading than they do uploading
Most people work from an office, which means home internet has more download speed and offices have more upload speed
Internet service providers (ISPs) configure our connection based on the most popular activities
Not all ISPs prioritise download speeds, the best allow for both download and upload
Which of the below describes a server?
A server is like any other computer, but it is left on which allows others to access the network
A server is another word for an external hard drive
A server is a powerful computer which provides services to a network
A server allows people to only save emails on it
The piece of network hardware that allows you to connect one network to another network over a large area is...
Router
Network cable
Hub
Server
Out of the below options, which one is an ISP?
VPN
Cloud
Ground
BT
Tick-Talk
An individual variable can store (a) value at one time.
What will be the output of this program when it is executed? (What will the sprite say?)
A
B
C
D
If this script is given to a sprite, what will the sprite say?
3
9
2
8
What name is given to a set of instructions for carrying out a task?
Logarithm
Algorism
Algorithm
Polyrythm
What type of block is this?
Iteration
Sequence
Selection
Variable
If this script is given to a sprite, what will the sprite say?
(a)
What type of block is this?
Iteration
Sequence
Variable
Selection
A set of three (or more) blocks placed in order is known as what?
Iteration
Selection
Sequence
Variable
What term is given to the process of correcting errors in code?
Debugging
Debulging
Debagging
Debigging
What symbol does this represent in a flowchart?
Process / Task
Decision
Input / Output
Start / End
Sub-program
What is Decomposition?
Developing a step by step solution to the problem.
Breaking down a complex problem into smaller, more manageable parts.
Focusing on the important information only.
Looking for similarities within problems
Which set of blocks would I use if I wanted my character to get an extra life it touched a bowl of cheesy puffs?
What does this Comparison Operator do?
A is larger than B
B is larger than A
B is the same as A
B and A are not the same
What does this logic operator mean?
Both of the conditions have to be True to output True
Either of the conditions has to be True to output True
The condition has to be False to output True
The condition has not been met and is False
What will the output be?
The cat will say "10 is smaller than 50" for 2 seconds
The cat will say "50 is smaller than 60" for 2 seconds
Nothing will be output
The cat will say "50 is smaller than 10" for 2 seconds
What will be outputted (what will be said) when the following program is executed?
10, 11, Lunchtime, 12
10, 11, Lunchtime, 13
10, 11, 12, 13
10, 11, Lunchtime, 12, 13
What type of loop is this?
Count Controlled Loop
Condition Controlled loop
What would the variable be?
(a)
What will the output be if the user input is 'No'
'I can't believe I got fired from the calendar factory. All I did was take a day off'
No output.
'No'
'answer'
What is the binary number of 138?
(a)
In binary the multipliers or weights go up in power of...
2
3
4
5
How many binary digits make up a byte?
(a)
ASCII uses how many bits?
(a)
If the ASCII number for H is 72, what is Q?
79
80
81
82
11001+10110=???
If overflow is present, use in answer.
(a)
1100011+1011100=???
If overflow is present, use in answer.
(a)
What can ASCII represent?
Letters (Upper/Lower)
Numbers
Symbols
All of the answers
If the ASCII number for H is 72, what is Q?
79
80
81
82
Simple - How many bits does 20 bytes contain?
100
120
140
160
Bit, Byte, Kilobyte, (a) , Gigabyte, Terabyte
What is the missing unit? 700KB, 980KB, 1.1MB, ....., 2,3MB and 3.1GB.
2.1KB
2.1MB
2.1GB
2.1TB
American Standard Code for Information Interchange can be shorted to what?
(a)
What is the binary number of 34?
(a)
What is the binary number of 145?
(a)
What is the denary (decimal) number of 01000011?
(a)
What is the denary (decimal) number of 11100110?
(a)
When converting binary to decimal, which side do you work from?
Left to Right
Right to Left
What is 1 + 1?
0, carry 1
0, carry 0
1, carry 1
1, carry 0
Calculate the binary addition: 1011+11001+10001 Use binary addition rules
110100
110001
100101
110101
If the ASCII number for H is 72, what is Q?
79
80
81
82
The fixed number of binary digits is called C_____ D____.
(a)
The encoding for this image with a 2-bit colour depth has been started. What is the correct encoding for the third row?
IMPORTANT - Put a space between each number, example: 01 01 01
(a)
What is the minimum number of bits required (in a pixel) for an image that uses 32 different colours?
IMPORTANT - just type in a number
(a)
This image was created using a 2-bit colour depth. Which option shows the correct encoding?
What is meant by Colour Depth?
Number of pixels in the image
The number of colours available for each pixel
How pixelated the image is
Each pixel is a .................... . Each colour represented by a number of ...............
colour, bits
file, binary
character, pixels
104, 101, 108, 108, 111... spells???
(a)
Reorder the following from smallest on the left to largest on the right
Bit
Byte
MB
GB
PB
Reorder the following smallest to largest
2 000 000 bytes
2300KB
0.1 GB
200 MB
CHALLENGE - Convert 260 into Binary, answer needs to have 12 digits.
(a)
