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WorksheetsCS- Q1 Revision
Total questions: 71
Worksheet time: 36mins
Which of the following is an example of binary information?
Text files
An image file
A video file
All of the above
What does ASCII stand for?
American Standard Code for Information Interchange
American System Code for Interchange Information
Automated System Code for Interconnected Information
Advanced Standard Code for Internet Interchange
What is the base number system used in binary code?
Base 2
Base 10
Base 16
Base 8
How many bits are in a byte?
2
4
8
16
What is the purpose of compression in data storage?
To make data larger
To save space and reduce file size
To make data more secure
To increase the speed of data transfer
Which term refers to the smallest unit of data in a computer system?
Bit
Byte
Kilobyte
Terabyte
In binary, what does 101 represent in decimal?
3
5
7
9
What is the main benefit of using decimal over binary?
It uses fewer digits
It is faster to process
It provides more accuracy
It is more secure
What is the process of converting information into binary called?
Compression
Encryption
Encoding
Decoding
How many different values can a single byte represent?
16
64
256
512
A megabyte (MB) contains how many kilobytes (KB)?
512
1,024
2,048
10,000
What does RGB stand for in digital images?
Red, Green, Blue
Radiant, Glowing, Bright
Red, Gray, Black
Right, Green, Bold
What is pixel density measured in?
Inches per pixel
Pixels per inch
Bytes per pixel
Bits per inch
What does a higher pixel count generally result in?
Lower resolution
Higher resolution
Slower processing
More compression
What is the decimal equivalent of the binary number 1100?
10
11
12
13
What is the purpose of encryption in digital data?
To make the data smaller
To organize data
To protect data from unauthorized access
To convert data into images
Which of the following formats supports transparency in images?
PNG
JPEG
BMP
TIFF
What is the term for a sequence of instructions that tells a computer how to perform a specific task?
Algorithm
Metadata
Compression
Sampling
What is the Internet?
A physical device that connects computers
A worldwide network of interconnected devices
A wireless network
A type of computer software
Which of the following best describes a packet?
A small chunk of data sent over a network
A webpage file
A hardware component
A virus
What is the purpose of routers in the Internet?
To encrypt data
To store data
To direct packets along the most efficient path
To assign IP addresses
What is meant by "bandwidth" in terms of the Internet?
The distance between two routers
The speed of the CPU
The maximum amount of data that can be transmitted in a given time
The security of data
Which is a vulnerability of using public Wi-Fi?
You get faster speeds
It's difficult to use
Your data can be intercepted more easily
Your ISP gets blocked
What is the primary purpose of a firewall?
To detect viruses
To filter incoming and outgoing traffic based on rules
To encrypt data
To speed up downloads
What does URL stand for?
Uniform Resource Locator
Universal Routing Link
Unified Resource Language
Unidentified Router Label
What is the primary function of a network?
To store data
To allow devices to communicate with each other
To encrypt data
To display web pages
Which device is essential for connecting a network to the internet?
Printer
Modem
Mouse
Monitor
What is the role of a router in a network?
To connect devices wirelessly
To encrypt network data
To route data between different networks
To assign IP addresses to devices
What is the difference between LAN and WAN?
LAN is local, WAN is wide-area
LAN uses wireless, WAN uses cables
LAN connects countries, WAN connects cities
LAN is a type of software, WAN is a hardware device
Which of the following is an example of a wide-area network (WAN)?
A local office network
The Internet
A home Wi-Fi network
A school network
Which of the following is a method for accessing the Internet?
Modem
Wi-Fi
Ethernet
All of the above
What does "bandwidth" measure?
The delay of data transmission
The amount of data that can be transmitted
The size of a file
The security of a network
Which of the following is a web address?
HTML
www.code.org
FTP
IP
What is the role of a router?
To store data
To convert websites into IP addresses
To forward data between computer networks
To encode messages
Which of the following is a benefit of the Internet?
Slower data transfer
Increased communication speed
Reduced data security
More accessibility
Which of the following is a benefit of the Internet?
Slower data transfer
Increased communication speed
Reduced data security
Limited access to information
Which of the following is not a type of network?
WAN
LAN
TAN
PAN
Which of these is an example of an Internet service?
IP address
Router
DNS
What is the main purpose of the Circle Square Patterns lesson?
To learn about variables
To explore patterns and repetition
To understand conditionals
To design algorithms
Which of the following shapes can be created using the code learned in the Circle Square Patterns lesson?
Only circles
Only squares
Both circles and squares
Neither circles nor squares
How many bits are in a byte?
8
16
32
64
How is information represented in a computer?
Decimal numbers
Hexadecimal numbers
Binary numbers
Octal numbers
What is the main purpose of using binary numbers in computers?
It is easier for humans to understand.
Computers use transistors that represent two states (on/off).
It saves memory.
It makes calculations faster.
How many possible values can a single bit represent?
1
2
4
8
Which statement best describes binary?
It is a form of encryption.
It is a base-2 number system.
It is a base-10 number system.
It is used only for text files.
Which of the following is NOT an example of representing digital information?
Text files using ASCII
Images using pixels
Audio using bits
Paper documents
Which of the following represents the number 5 in binary?
101
100
111
110
What does each bit in a binary number represent?
A decimal value
An ASCII character
A power of 2
A hexadecimal value
What is the purpose of using binary in computers?
To simplify calculations
To represent data using two states
To increase processing speed
To store large amounts of data
What is the decimal equivalent of the binary number 1101?
13
14
15
16
Which of the following is an example of a digital signal?
An analog audio signal
A sequence of binary digits
A sine wave
A color gradient
What does the term "bit" stand for?
Binary Information Transmission
Binary Digit
Basic Information Technology
None of the above
Which of the following binary numbers represents the decimal number 10?
1010
1001
1100
1110
Which of the following statements is true about the binary system?
It uses 10 digits (0-9).
It uses 2 digits (0 and 1).
It uses letters and symbols.
It is the same as the decimal system.
How many bytes are in a kilobyte?
100
256
1024
2048
Which of the following is not a method of representing information in computers?
Text
Images
Sounds
Emotions
What is the binary representation of the decimal number 0?
1
0
10
100
Which of the following is a valid binary number?
1102
10101
2010
120
Which of the following is a representation of sound in digital format?
MIDI
WAV
MP3
All of the above
What is the binary equivalent of the decimal number 15?
1110
1111
1100
1011
Which of the following formats is used to represent images?
TXT
JPG
MP4
WAV
What binary number represents the decimal number 4?
100
110
111
010
How is information stored on a computer?
In analog form
As electrical signals
In chemical form
As sound waves
A group of interconnected computing devices capable of sending or receiving data.
Computing Device
Computing System
Computing Network
Path
The series of connections between computing devices on a network starting with a sender and ending with a receiver.
Computing Device
Computing System
Computing Network
Path
The maximum amount of data that can be sent in a fixed amount of time, usually measured in bits per second.
Computing Device
Bandwidth
Computing Network
Path
Finding and fixing problems in an algorithm or program.
Debugging
Bug
Programming
Error
Part of a program that does not work correctly:
Debugging
Bug
Programming
Error
Which option lists units of bytes from largest to smallest?
terabyte, gigabyte, kilobyte
megabyte, terabyte, kilobyte
gigabyte, terabyte, megabyte
kilobyte, gigabyte, terabyte
The thinking work computers do to turn input into output.
Input
Output
Processing
Storage
Input is the information computers give to users, devices, or other computers
True
False
