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WorksheetsComputer science Quiz 1
Total questions: 133
Worksheet time: 2hrs 13mins
What is smallest unit of the information?
bit
byte
block
data
In flowchart this shape is called (a)
What is an Computer Functions ?
gathers data, allows users to input data.
Input, Output, Process, Storage.
Different tools used to solve the problem.
Algorithm
Flowchart
Pseudocode
Data
Examples of Input Devices
CPU, ROM, RAM and cache, Slots for expansion cards
monitors, printers, speakers and earphones
keyboard, mouse, microphone, stylus, scanner, camera
The smallest unit of information is ?
a byte (Pronounced: bite)
a bit
a nibble
a block
Fortran
The smallest visual element on a video monitor is called what?
Character
Pixel
Byte
Kwerk
DEFINE: Binary Code
Any type of computer network that is not connected by cables of any kind.
Read Only Memory- Permanent instructions that cannot be changed. It makes the BIOS function. Checks your OS.
Groupings of 1's and 0's that makes information that a computer can understand.
Binary
A way of representing information using only two options
2
Coding with numbers
How we represent words
Bandwidth
Transmission capacity measure by bit rate
How wide your belt can fit
Your download speed
How fast your computer runs
Internet
A group of computers and servers that are connected to each other.
Wires that are plugged into the computers
Electricity running through our computers
The future
Net Neutrality
The principle that all Internet traffic should be treated equally by Internet Service Providers
America being neutral on all cyber attacks
Being neutral on the internet among other users
The internet war has stopped
IP Address
A number assigned to any item that is connected to the Internet
The address of my house when I use the internet
The address of my router
The address of my internet
Domain Name System
This system translates domain names to IP addresses
This system helps filter traffic
This system makes up names for websites
This system brings up all the names on the internet for the TCP
HyperText Transfer Protocol
The protocol used for transmitting web pages over the Internet
The protocol that says how fast to send text
The protocol used to by text Hyper
The protocol used to Transfer HyperText
URL
An easy-to-remember address for calling a web page
Universal Reality Language
The way websites talk to each other
The IP address of a website.
Which of these image file formats involves lossy compression?
.gif
.png
.jpg
.bmp
Which image file format is uncompressed?
.bmp
.png
.jpg
.gif
Which logic gate is this?
AND
OR
XOR
NOT
RAM - What happens when the electricity Is turned off?
The data from the memory is saved onto flash memory
The data from the memory is saved onto the hard disk
The data from the memory is not saved
The data from the memory is saved onto ROM
Which one is an example of flash memory?
SD Card
RAM
ROM
Cache
Which storage device stores data using magnetic technology?
Solid state
Internal Hard disk
USB
External hard disk
Which one is secondary storage?
RAM
Hard Disk
ROM
BIOS
Which storage device is not flash memory?
SD Card
RAM
Micro SD
BIOS
A computer is continuously paging to the swap file. Why might this be
There is not enough RAM
The cache is too slow
The virtual memory is too small
The hard disk is too slow
Describe a difference between RAM and ROM
With RAM, data can be read and written to it. Whereas with ROM it can only read data.
With RAM data can only be read. Whereas with ROM data can be read and written to it.
Why is RAM volatile?
It isn't, it keeps its memory, even when the computer is turned off
It temporarily stores data, when the power is turned off, it loses what was was stored in it.
Does ROM temporarily or permanently store the bootstrap?
Permanently
Temporarily
RAM is Fast temporary memory
What is the fastest form of memory?
Level 1 cache
Level 2 cache
RAM
ROM
What is Disk Thrashing?
A Hard Disc Drive that's been damaged because it's been accessed too often
A file in a Hard Disc Drive disc that's been split into pieces
A noise that occurs when the Hard Disc Drive disc is detached from it's arm
A method of encrypting a Hard Disc Drive disc
Why do computers need RAM?
To store the boot up sequence for the computer quickly
To allow the CPU to access Data and Instructions securely
To allow the CPU access Data and Instructions quickly
To store the boot up sequence for the computer securely
What do the instructions in the ROM do when the computer starts up?
Transfers the Operating System from Secondary Storage to the RAM
Checks the system for viruses
Checks the system for errors
Transfers the Operating System from ROM to the RAM
What causes slow down in a computer?
Too many programs running meaning the RAM must be used multiple times, slowing it down
Too many programs running meaning Virtual Memory must be used, which is slower
Opening and closing too many programs in a short time meaning the RAM must be used multiple times, slowing it down
Opening and closing too many programs in a short time meaning Virtual Memory must be used, which is slower
What causes slow down in a computer?
Too many programs running meaning the RAM must be used multiple times, slowing it down
Too many programs running meaning Virtual Memory must be used, which is slower
Opening and closing too many programs in a short time meaning the RAM must be used multiple times, slowing it down
Opening and closing too many programs in a short time meaning Virtual Memory must be used, which is slower
ROM memory is used to store permanent information, which is non-erasable. The access speed of RAM is faster. Its speed is slower in comparison with RAM. Therefore, ROM can't boost up the processor speed.
TRUE
FALSE
What does CPU do?
The CPU helps the computer to store memory
The CPU helps the computer to keep everything in specific groups and sorting out everything.
The CPU sends signals to control the other parts of the computer, almost like how a brain controls a body.
What does GPU stand for?
graphic pocessor unit
General processing unit
Graphics processing unit
Global processor unit
What is this ?
A mouse
Touchpad
Ipad
touch sensor
Which one is largest
Gigabytes
Terabytes
Megabytes
Byte
What is an ethernet port used for?
to use bluetooth
connecting to the internet
creating other accounts
What is software?
Software is an app to help the comouters internet to run faster
Software is were all the memory of a computer is stored in
Software is the programs and routines for a computer or the program material for an electronic device which make it run
Select all the examples of operating systems (OSs) ...
Linux
iOS
Android
Chrome
Python
Select all the examples of application software ...
Photoshop
Windows 10
Chrome
Anti-virus
OneNote
Choose all the browser software ...
Choose the best answer to complete this sentence:
Software refers to the ________ instructions that can be stored on secondary storage devices and loaded into main memory to be executed.
program
written
data
saved
Choose all the Boolean logic gates ...
NOT
AND
BUT
XOR
Truth table for AND gate?
Truth table for OR gate?
Which logic gate is this truth table for?
AND
OR
NOR
XOR
Select all the characteristics of data stored on a network that make it important in terms of network security...
Mission critical - required for running the business or organisation
Private and confidential - inappropriate for some people to see it
Financially valuable - could be used for profit by others
Volume - large amount of data needed to store
An attack on a computer system that exploits how people will behave and respond in certain situations is called ________ engineering.
Software
Auto
Cyber
Social
What type of cyberattack is this?
Phishing
Pharming
Exploiting technical weakness
Shoulder surfing
ASCII is an encoding system for text. What does ASCII stand for?
American Standard Code for Information Interchange
All System Code In Internet
American Simple Code for Interesting Information
Alpha Super Code Input Information
A unique identifying number that is assigned to all devices connected to the Internet?
IP address
MAC address
TCP/IP
URL
Choose all the items that are essential to connect to the Internet?
Modem/router
ISP
Network-connected device
IP address
computer
What is this?
A networking device that forwards data packets between computer networks
Gateway
Server
Modem
Router
What is this?
A hardware device that converts data between different transmission media so that it can be transmitted from computer to computer (usually over telephone wires)
Modem
Router
Switch
Gateway
Shows the steps representing an algorithm using various shapes of boxes
Structure diagram
Top-down design
Flowcharts
Pseudocode
Describes an algorithm using normal language with some reserved words
Structure diagram
Top-down design
Flowcharts
Pseudocode
Which type of network is this?
A local area network that uses high-frequency radio waves to connect devices.
LAN
WLAN
VPN
WAN
Choose all the types of system bus?
Address
Data
Control
Register
What is the main storage area for program instructions and data in a Von Neumann computer architecture?
RAM
CPU
ROM
Cache
Which internal component carries out the processing of program instructions?
CPU
GPU
RAM
BIOS
Which word describes the property of RAM memory where memory cells must be constantly refreshed to keep their contents
volatile
non-volatile
random
static
The part of the CPU that directs the operations of the processor
Control unit
ALU
Registers
Clock
What is the correct sequence of operations between CPU and RAM?
Fetch-decode-execute
Fetch-execute-decode
Decode-fetch-execute
Fetch-execute-fetch
Choose all the secondary storage mediums ...
HDD
SSD
DVD
Cloud
RAM
Any process that hides the true physical nature of a computing resource, usually to simplify the way it is accessed by a user.
Virtualisation
Abstraction
Decomposition
Representation
True or False? Structure and Presentation in a HTML document are kept seperate
True
False
.JPEG is an example of a compressed file format
True
False
Which one of these are lossy file formats?
JPEG, MP3, MP4, ZIP
PNG, BMP, WAV
Which one of these are lossless file formats?
JPEG, MP3, MP4, ZIP
PNG, BMP, WAV
Which is an example of using hexadecimals in computer science?
MAC addresses
URL
File types
Location of a device on a network
IP address
MAC address
Internet Service Provider
Steps
Input ---> Process ---> Output
Input ---> Output ---> Process
Output ---> Process ---> Input
Select all the types of program translator ...
Compiler
Interpreter
Assembler
Parser
What is another name for the original untranslated program code?
Source code
Object code
Machine code
Assembly code
Finding and fixing problems in an algorithm or program.
Software
Bug
Debug
Computer
What is a computer Output ?
displays data and information for user.
Input, Output, Process, Storage.
representation of fact, figure, or idea.
DEFINE: Central Processing Unit (CPU)
Software used to control the computer and its peripheral equipment.
Brain of the computer that performs instructions defined by software
Groupings of 1's and 0's that makes information that a computer can understand.
Something anyone can operate
What does LAN stand for?
Micheal
Little actual area
local area network
Large area network
An _____________ is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware.
Banana
Hardware
Software
Operating System
A logic gate that outputs True only if both its inputs are also True?
OR
AND
XOR
NAND
Choose all the types of system bus?
Address
Data
Control
Register
This is an output device that creates an object by building layer upon layer of material which could be plastic, resin or powdered metal.
3D Printer
2D Cutter
Actuator
Inkjet Printer
A device that allows the user to view or hear the data that has been entered into a computer system.
Output Device
Digital Light Projector (DLP)
2D Cutter
Liquid Crystal Display (LCD)
Facetime and Skype are examples of VoiP?
True
False
Facetime and Skype are examples of VoiP?
True
False
A _______ is an electronic device that manipulates information, or data.
Software
Hardware
Keyboard
Computer
The _____, also called a processor, is located inside the computer case on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands.
CPU (Central Processing Unit)
PUC (Processing Unit Central)
CUP (Central Unit Processing)
Center Process Unification
The _____, also called a processor, is located inside the computer case on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands.
CPU (Central Processing Unit)
PUC (Processing Unit Central)
CUP (Central Unit Processing)
Center Process Unification
____ is your system's short-term memory. Whenever your computer performs calculations, it temporarily stores the data in the RAM until it is needed.
REM
RIM
RAM
ROM
The ______ is where your software, documents, and other files are stored. It long-term storage, which means the data is still saved even if you turn the computer off or unplug it.
RAM
USB
Hard Drive
Storage Drive
SSD
An _____________ is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware.
Banana
Hardware
Software
Operating System
An extra bit added to a string of binary code to ensure the number of 1-bits are either even or odd, depending upon the system used.
ARQ
Parity Check
Checksum
Check Digit
The final number in a code of numbers. It is calculated from all the other numbers in the code.
It’s purpose is to spot errors on data entry.
ARQ
Parity Check
Checksum
Check Digit
Using even parity which of the following three 8 bit binary numbers has been transmitted incorrectly?
0 1 0 1 1 0 0 1
1 0 0 1 0 0 0 1
0 0 1 0 1 1 0 1
Using odd parity which of the following three 8 bit binary numbers has been transmitted incorrectly?
0 1 0 0 1 1 1 1
1 0 0 1 0 0 0 1
0 1 0 1 1 0 0 1
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 "Malware"?
Software which is designed to cause damage to a system or systems
Software designed by someone called Malcolm
Software designed to prevent attacks from outside the computer system
Software designed to enable people to hack your system
What is a virus?
A malicious program which replicates by injecting its own code into other files
A malicious program which replicates by making copies of itself and filling up RAM and secondary storage sometimes propagating across a network
A malicious program which masquerades as a legitimate program but causes harmful execution when run
A malicious program which encrypts all of the data on a computer system and demands payment in order to decrypt the data
What is a virus?
A malicious program which replicates by injecting its own code into other files
A malicious program which replicates by making copies of itself and filling up RAM and secondary storage sometimes propagating across a network
A malicious program which masquerades as a legitimate program but causes harmful execution when run
A malicious program which encrypts all of the data on a computer system and demands payment in order to decrypt the data
What is a worm?
A malicious program which replicates by injecting its own code into other files
A malicious program which replicates by making copies of itself and filling up RAM and secondary storage sometimes propagating across a network
A malicious program which masquerades as a legitimate program but causes harmful execution when run
A malicious program which encrypts all of the data on a computer system and demands payment in order to decrypt the data
What is "Social Engineering"
Manipulating people through voice or text into sharing private information
Setting up security methods to prevent people from falling victim to scams
Calling people on the phone in order to try to get their passwords
Building replicas of human beings in order to commit some sort of elaborate, expensive and machiavellian fraud.
What type of social engineering attack is shown in the image?
phishing
vishing
smishing
DDOS
