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WorksheetsEDMD 2000: Digital Literacy and Computer Science in Education
Total questions: 78
Worksheet time: 26mins
Answers that are not true
Coding is the same as computer science
Students can learn all about computers by participating in one Hour of Code activities
Computers affect many aspects of human life.
Students learn how to dissect a frog to become a scientist.
Hour of Code helps students experience that computer science is fun.
What is the earliest known calculating device?
Calculating clock
abacus
the ABC computer
Difference Engine
He is known as the “father of the computer.” His Difference Engine and Analytical Engine were the first automatic mechanical computers/calculators. What is the name of this inventor?
Douglas Engelbart
Bill Gates
Edmund Berkeley
Charles Babbage
Who is the world’s first computer programmer?
Alan Turning
Steve Jobs
Ada Lovelace
Larry Page
The world’s first computer programmer was a woman
True
false
Beginning in 1994, the number of female computer science majors began to decline steadily.
True
False
Providing early exposures and role models is important for students, particularly girls, to be interested in computer science
True
False
One of the first business uses of computers is for the U.S. Census Bureau. Later the company that helps U.S. Census Bureau became a well-known technology company. What is the name of the company?
Hewlett Packard
International Business Machine (IBM)
Apple
Microsoft
What is the name of the first general-purpose electronic computer?
Mark II
Deep Blue
ENIAC (Electronic Numerical Integrator and Computer)
Analytical Engine
Learning computer science helps students develop ...
Technical Skills
Creativity
Problem Solving
Logical Thinking
The main part or brain of the computer that processes instructions, performs calculations, and manages the flow of information through a computer system is called ...
GPU
CPU
SSD
RAM
When you save a file, it is permanently saved on the:
RAM
Motherboard
Hard Drive
Monitor
Select 3 input devices your computer uses:
Mouse, Printer, CPU
Mouse, Keyboard, Scanner
Mouse, Keyboard, Monitor
Mouse, Scanner, Printer
... is the first program run on a computer when the computer boots up
Application Software
System Operations
Operating System
Utility Software
... states that the number of transistors on a microchip doubles about every two years, though the cost of computers is halved. This means that the power of computers continues to increase while the costs are cut in half 1-2 years.
(a)
The motherboard is responsible for connecting and allowing communication between all hardware components in a computer.
True
False
Which of the following is an example of system software?
Windows 10
Adobe Photoshop
Microsoft Word
Google Chrome
Appropriate function of a printer
output
processing
input
storage
Appropriate function of the CPU
output
processing
input
stoargae
Appropriate function of a keyboard
output
processing
input
storage
Appropriate function of the hard drive
output
processing
input
storage
What does ASCII stand for?
American Standard Code for International Integration
Automated System for Code Interpretation
American Standard Code for Information Interchange
Association of Standardized Code Implementations
How many bits are used to represent a character in ASCII?
4 bits
6 bits
8 bits
10 bits
What is the ASCII code for the letter 'A'?
65
72
97
110
What is the range of values for each color channel in the RGB model?
0 to 100
0 to 255
0 to 365
0 to 16,777,216
If a pixel has RGB values (255, 0, 0), what color does it represent?
White
Black
Green
Red
Blue
When mixing all three RGB channels at their maximum intensity, what color is produced?
Black
White
Gray
Purple
What is the base of the hexadecimal number system commonly used in color codes?
8
10
16
20
In RGB hexadecimal notation, what color is represented by #00FF00?
Red
Green
Blue
White
In hexadecimal, what is the maximum value represented by the character 'F'?
10
15
255
16
What does 'RGB' represent?
(a)
In analog technology, information is represented using:
Binary Code
Continuous Signals
Discrete Values
Both continuous and discrete values
Which of the following is a key advantage of digital over analog?
Higher signal fidelity
Simplicity of transmission
Unlimited resolution
Resistance to interference
The output of a NOT gate is always the same as its input.
True
False
What benefit is associated with the natural representation of information in analogue form?
Preservation of subtle details
Enhanced security
Reduced bandwidth requirements
Seamless integration with digital systems
Which type of data compression is typically reversible, allowing for perfect reconstruction of the original data?
Lossy
Lossless
Hybrid
Entropy
The amount of data required for high-quality sound in digital audio is generally higher than that needed for lower-quality sound
True
False
In data compression, the process of removing unnecessary details or information is known as (a) compression.
Compression algorithms are only useful for text files and cannot be applied to multimedia files like images and videos.
True
False
The technique or process of reducing the size of a file or data is commonly referred to as (a)
Which logic gate produces an output of 1 only when both inputs are 1?
OR Gate
AND Gate
XOR Gate
NOR Gate
What is the output of an OR gate if both inputs are 0?
0
1
2
Depends
What is the output of a NOT gate if the input is 1?
0
1
2
Depends
Which of the following is a commonly used programming language?
Python
English
Binary
HTML
What is the difference between coding and programming?
They are the same thing
Coding refers to writing code, while programming involves a broader process including planning, testing, and maintenance
Coding is for beginners, programming is for experts
Programming is only used for app development.
What is the purpose of a logic gate in a digital circuit?
To store electrical energy
To amplify signals
To perform logical operations on binary inputs
To convert analog signals to digital
Why do shorter signal paths in small circuits lead to faster performance?
They increase signal travel time
They reduce the amount of noise
They lower the power supply requirements
They decrease the time required for signal propagation
What is the primary function of a transistor in electronic circuits?
To store electrical energy
To act as a switch or amplifier
To convert analog signals to digital
To generate electrical power
JPEG compression is primarily used for text files.
True
False
What is the Internet?
A collection of web pages found by their addresses
A network of networks that provides the basis for the web.
A standardized system for accessing and navigating the Internet.
A way to access and share data.
Who developed the World Wide Web?
Sir Tim Berners-Lee at CERN
The Department of Defense Advanced Research Projects Agency
The Mozilla Foundation
The European Physics Lab
What is the relationship between the Internet and the World Wide Web?
The Internet is a subset of the World Wide Web
The World Wide Web is a subset of the Internet
They are interchangeable terms
The Web is a way to access data on top of the Internet infrastructure
How large are IPv4 addresses in terms of bits?
16 bits
32 bits
64 bits
128 bits
What does IP stand for in "IP address"?
International Port
Information Provider
Internet Protocol
Interconnected Pathway
What is the purpose of an IP address?
To identify the physical location of a computer
To translate domain names into numerical addresses
To establish a secure connection between devices
To assign a unique identifier to each device on a network
What does DNS stand for?
Dynamic Network System
Domain Name System
Digital Network Service
Data Networking Solution
What is the purpose of DNS?
To translate domain names into IP addresses
To assign IP addresses to devices on a network
To secure internet connections
To provide web hosting services
Every device connected to the Internet has a unique IP address.
True
False
HTTP stands for Hypertext Transfer Protocol and is used for secure communication over the Internet.
True
False
The internet relies on physical cables and wireless networks to transmit data between devices.
True
False
What is the primary function of a router in a network?
Storing data
Managing network security
Directing data packets between different networks
Controlling hardware devices
If your modem is functioning but your devices cannot connect wirelessly, the problem is most likely with the:
Ethernet cable
ISP's service line
Modem firmware
Router
Which device converts analog signals from your internet service provider (ISP) into digital signals your devices can use?
Switch
Modem
Firewall
Router
How to find IP address
Wi-Fi settings
look up "whats my IP address"
you should know it
Which of the following is a function of TCP?
Ensuring the correct delivery of data packets
Managing the physical connections between devices
Encrypting data for secure transmission
Controlling the flow of electricity in the network
What is the role of routers on the internet?
To break down data into packets
To ensure all packets arrive at their destination at the same time
To manage traffic and direct packets through networks
To verify the delivery of packets using TCP
How does a router determine the best path for data packets in a network?
By sending the packets to all connected devices
By using routing tables and algorithms to make decisions based on network congestion, link quality, and the most efficient route available.
By randomly selecting a path for each packet
By analyzing the content of each packet
What is the purpose of an ISP (Internet Service Provider)?
To design websites
To manage domain registrations
To provide access to the internet
To develop networking protocols
How does the use of optical fiber cables contribute to faster and more efficient data transfer?
By facilitating the division of data into small packets for efficient routing.
By assigning unique IP addresses to devices connected to the internet.
By connecting satellites to data centers for faster data transfer.
By converting data into light pulses for long-distance transmission.
DNS servers store information about domain names and their corresponding IP addresses in a centralized database.
True
False
What is the purpose of DNS in Internet communication?
Encrypts data transmissions
Establishes secure connections
Converts IP addresses to domain names
Determines network topology
What is the purpose of public key cryptography in secure messaging on the internet?
To encrypt data using a shared secret key between the sender and receiver.
To decrypt data using a shared secret key between the sender and receiver.
To encrypt data using a public key that can be shared with anyone.
To decrypt data using a private key that only the receiver has access to.
Which encryption method requires both the sender and receiver to agree on a secret key ahead of time?
Symmetric encryption
Asymmetric encryption
Caesar's cipher
Public key cryptography
The Caesar cipher works by:
Reversing the letters in a word
Swapping letters with numbers
Shifting letters by a fixed number of places in the alphabet
Encrypting using two keys
In public key encryption, who has access to the private key?
Everyone on the Internet
Only the sender
Only the receiver
The DNS server
What does the “S” in HTTPS stand for?
Server
Speed
Secure
Service
Why is Internet data divided into smaller packets before being sent?
To help avoid congestion and allow data to travel different routes
To reduce the file size
To keep the Internet organized
To make the data easier to print
What type of transmission medium is most commonly used to carry Internet data over long distances under oceans?
Satellite links
Radio waves
Microwave towers
Fiber optic cables
