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WorksheetsCommunication Systems Quiz
Total questions: 99
Worksheet time: 50mins
Which of the following is NOT a type of communication system equipment?
Hub
Router
Wireless Access Point
Fiber Optic Cable
What are the two main types of communication channels?
Wired and Wireless
LAN and WAN
Star and Mesh
Hub and Switch
Which of the following is an example of a network topology?
Star
Router
Wireless Access Point
Wired
What does the acronym LAN stand for in communication systems?
Local Area Network
Large Area Network
Limited Access Network
Linked Area Network
Which of the following is NOT a type of network mentioned in the diagram?
LAN
WAN
PAN
MAN
Which device is used to connect multiple devices in a network and operates at the data link layer?
Switch
Router
Modem
Repeater
What is the process of sharing data, programs, and information between two or more computers called?
Computer networking
Computer communications
Data processing
Information technology
Which application provides a fast and efficient alternative to traditional mail by sending and receiving electronic documents?
Texting
Videoconferencing
Electronic commerce
What is the primary purpose of texting in computer communications?
Buying and selling goods electronically
Sending and receiving electronic documents
Direct text communication using short electronic messages
Conducting long-distance telephone calls
Which application provides a low-cost alternative to long-distance telephone calls using electronic voice and video delivery?
Videoconferencing
Texting
Electronic commerce
What does electronic commerce involve?
Sharing data between computers
Buying and selling goods electronically
Sending short electronic messages
Conducting video calls
What allows even the smallest computers and devices to communicate directly with one another or with millions of other computers globally?
Networking
Stand-alone computing
Data storage
Cloud computing
What is the foundation of the unprecedented global community created by networking?
Stand-alone data-crunchers
Networking
Cloud storage
Internet browsers
What is the simple concept on which networking rests?
Getting computers to communicate with each other
Storing data in the cloud
Using stand-alone computers
Creating physical connections only
What is required for computers to exchange data in a network?
A physical connection and a common language (protocol)
A stand-alone data-cruncher
A global community
A corporate network
What is an example of the layer we see in networking?
Information systems like the Web
Stand-alone computers
Data-crunching devices
Corporate networks
In which year did the history of the Internet begin with the launch of Sputnik, the first man-made satellite?
1945
1957
1969
1983
What was the name of the first man-made satellite launched by the Soviet Union?
Apollo
Sputnik
Voyager
Luna
What was the U.S. government's response to the Soviet Union's launch of Sputnik?
Creation of NASA
Formation of the United Nations
Establishment of the Advanced Research Projects Agency (ARPA)
Development of the Manhattan Project
What was the primary goal of the U.S. government in response to the Soviet Union's display of superiority?
To improve its scientific and technical infrastructure
To develop nuclear weapons
To establish international trade agreements
To colonize the moon
What was the primary purpose of the ARPANET project initiated by ARPA?
To develop a global internet for public use
To help scientists communicate and share valuable computer resources
To create a military communication network
To establish a commercial computer network
In which year was the ARPANET created?
1965
1967
1969
1971
Which institutions were initially connected by the ARPANET in 1969?
MIT, Harvard, Stanford, and UCLA
UCLA, Stanford Research Institute, University of Utah, and University of California at Santa Barbara
University of Michigan, Stanford, UCLA, and University of Texas
Stanford, University of California at Berkeley, UCLA, and University of Chicago
What does the diagram of the ARPANET from 1969 depict?
A network of four connected computers
A map of global internet connections
A diagram of military communication systems
A blueprint for modern-day Wi-Fi networks
In 1985, which organization used ARPANET technology to create a larger network linking entire LANs at each site?
National Aeronautics and Space Administration (NASA)
National Science Foundation (NSF)
Advanced Research Projects Agency (ARPA)
International Telecommunication Union (ITU)
What does connecting two or more networks create?
A single computer
A mainframe system
An internetwork or internet
A standalone system
What was the NSF network initially referred to as?
The Internet (with an uppercase I)
An internet (with a lowercase i)
A LAN network
A mainframe network
What happened as the NSF network grew throughout the world?
It became known as the Internet (with an uppercase I)
It was renamed ARPANET
It was divided into smaller networks
It ceased to exist
What type of user interfaces did early Internet pioneers use to send emails and transfer files?
Graphical user interfaces
Primitive command-line user interfaces
Voice-controlled interfaces
Touchscreen interfaces
Why was finding information on the early Internet difficult?
The Internet was too slow
Access was limited to a small group of educators and scientists
There were no search engines available
The Internet was not yet invented
What development in the early 1990s made the Internet more accessible to the general public?
The creation of faster supercomputers
The introduction of monthly subscription fees
The development of user-friendly Internet access tools
The invention of email services
What was required to access the Internet in the early 1990s?
A free account
A monthly subscription fee
A government-issued permit
A scientific license
What is the estimated number of connected IoT devices globally in 2021?
10 billion
15 billion
22 billion
30 billion
Which technological advancement has contributed to the skyrocketing number of connected devices?
Artificial Intelligence (AI)
Internet of Things (IoT)
Blockchain Technology
Quantum Computing
What does the infographic primarily represent?
Internet activity every minute in 2023
IoT device statistics in 2021
Growth of connected devices over the years
Social media usage trends in 2023
Which of the following is NOT mentioned in the infographic as an internet activity in 2023?
Visits to ChatGPT
Blockchain transactions
Emails sent
Google searches
How many visits to ChatGPT occur every minute according to the infographic?
22,831
18,000
30,000
10,000
As of Q3 2023, how many Facebook users are there worldwide according to the data released by Meta?
2.5 billion
3.05 billion
1.677 billion
1.1 billion
How many global users does TikTok have as of June 2023?
3.05 billion
1.1 billion
1.677 billion
2.5 billion
Out of TikTok's global users, how many are monthly active users as of June 2023?
1.1 billion
3.05 billion
1.677 billion
2.5 billion
Which company is the parent company of Facebook?
TikTok
Meta
Who operates the Internet?
A single government organization
A single company
A single person
No single person, organization, company, or government
What was the Internet composed of at one time?
A single global network
Many regional networks established in countries worldwide
A single company’s private network
A single government-controlled network
What is the role of Internet Service Providers (ISPs)?
They coordinate the global domain name system (DNS).
They provide Internet access to individuals and businesses.
They ensure domain names are unique and translated correctly into IP addresses.
They regulate Internet content globally.
Which organization is responsible for coordinating the Internet's global domain name system (DNS)?
Internet Service Providers (ISPs)
Internet Corporation for Assigned Names and Numbers (ICANN)
World Wide Web Consortium (W3C)
International Telecommunication Union (ITU)
What does ICANN ensure regarding domain names?
They are accessible only to businesses.
They are unique and translated correctly into IP addresses.
They are managed by ISPs.
They are stored in fiber optic cables.
Which infrastructure is managed by ISPs to allow users to connect to the Internet?
Fiber optic cables, satellites, and cellular networks
Domain name systems (DNS)
IP address databases
Internet content regulation systems
What is the role of the World Wide Web Consortium (W3C)?
To regulate Internet access within national borders
To develop open standards for the long-term growth of the Web
To manage national top-level domains
To enforce laws related to online content and behavior
Who leads the World Wide Web Consortium (W3C)?
Tim Berners-Lee
Alan Turing
Vint Cerf
Mark Zuckerberg
What role do government agencies play in operating the Internet?
They develop open standards for the Web
They regulate and censor Internet access within their borders
They invent new Internet technologies
They manage international web protocols
Which of the following is NOT a responsibility of government agencies in Internet operation?
Imposing regulations on ISPs
Managing national top-level domains
Developing open standards for the Web
Enforcing laws related to online content and behavior
What is one of the main reasons networks are needed for resource sharing?
To reduce the physical location of resources
To share data and resources irrespective of physical location
To increase the cost of resources
To limit the number of users accessing resources
How does a network contribute to reliability?
By ensuring files are stored on a single computer
By allowing files to have copies on multiple computers in the network
By reducing the speed of communication
By increasing the cost of resource sharing
What is one of the benefits of using a network in terms of cost?
Sharing resources increases the cost
Sharing resources reduces the cost
Networks eliminate the need for resources
Networks increase the cost of communication
What is a key advantage of fast communication in a network?
Information can be exchanged at a very high speed
Information is limited to a single user
Communication is slower but more reliable
Networks reduce the need for communication
What is the primary function of sending and receiving devices in a communication system?
To act as an interface between devices and the communication channel
To originate and accept messages in the form of data, information, and/or instructions
To convert outgoing messages into packets for transmission
To reverse the process for incoming messages
Which of the following best describes the role of connection devices in a communication system?
They originate and accept messages in the form of data and instructions
They act as an interface between sending/receiving devices and the communication channel
They transmit data directly from one location to another
They store data for future communication
What do connection devices do with outgoing messages in a communication system?
They store the messages for later use
They convert the messages into packets for transmission
They directly send the messages to the receiver
They encrypt the messages for security
Which of the following is NOT a function of sending and receiving devices in a communication system?
Sending messages in the form of data and instructions
Receiving messages in the form of data and instructions
Acting as an interface between devices and the communication channel
Originating messages in the form of information
What are data transmission specifications in communication systems?
Rules and procedures for coordinating sending and receiving devices
The physical medium that carries the message
A type of wireless communication protocol
A method for encrypting data during transmission
What is the role of a communication channel in communication systems?
To define the rules for data transmission
To act as the medium that carries the message
To encrypt the message during transmission
To store the message temporarily
Which of the following can be a communication channel?
A physical wire or cable
A set of rules for data transmission
A software application
A database system
What is one characteristic of data transmission specifications?
They define how the message will be sent across the communication channel
They store the message temporarily
They encrypt the message during transmission
They act as the physical medium for message transmission
What is the primary function of a communication system?
To store data securely
To transmit data from one device to another
To process data for analysis
To create data packets for storage
What is the role of the communication channel in a communication system?
To store the message
To transmit packets between devices
To process the message
To receive the message
Which device in a communication system is responsible for receiving the transmitted message?
Sending device
Connection device
Receiving device
Communication channel
What is the sequence of components in a basic communication system?
Sending device → Communication channel → Connection device → Receiving device
Sending device → Connection device → Communication channel → Receiving device
Sending device → Receiving device → Communication channel → Connection device
Connection device → Sending device → Communication channel → Receiving device
What is the role of a modem in a simple communication system?
To create and send the message using a computer.
To modify and format the message for efficient travel across communication channels.
To describe the data transmission specifications.
To display the message on the receiving device.
Which of the following is an example of a communication channel in a simple communication system?
A modem.
A telephone line.
A sending device.
A receiving device.
What is described in the data transmission specifications in a communication system?
How the message is created and sent.
How the message is modified, reformatted, and sent.
How the message is displayed on the receiving device.
How the communication channel is established.
What happens to the message after it travels across the communication channel in a simple communication system?
It is displayed directly on the receiving device.
It is reformatted by the receiver's modem for display on the receiving device.
It is sent back to the sending device for verification.
It is stored in the communication channel for future use.
Which of the following statements is true about how computers connect to the internet?
Most computers are directly connected to the internet.
Computers connect to smaller networks, which are linked to the internet backbone through gateways.
Computers connect to the internet without using smaller networks or gateways.
Computers connect to the internet by sending messages without breaking them into packets.
What happens to a message at the source computer before it is sent over the internet?
The message is sent as a single large file.
The message is broken down into smaller parts called packets.
The message is encrypted but not divided into packets.
The message is sent directly to the internet backbone without modification.
What is the role of gateways in internet connectivity?
Gateways connect smaller networks to the internet backbone.
Gateways store messages before they are sent to the internet.
Gateways encrypt messages for secure transmission.
Gateways directly connect computers to the internet without smaller networks.
What is a packet in the context of computer networks?
A parcel of data sent across a computer network
A physical device used to connect computers
A type of software for managing networks
A security protocol for protecting data
What information does each packet contain?
The sender's address, destination address, sequence number, and data
Only the sender's address and data
The sender's address, destination address, and encryption key
Only the sequence number and data
What happens to packets when they reach their destination?
They are reassembled into the original message according to the sequence numbers
They are discarded after being checked for errors
They are stored in a database for future use
They are encrypted for additional security
What is a packet in the context of data transmission?
A single large file sent over a network.
Messages divided into equal-size packets for easier handling.
A random assortment of small, medium, and large files.
A compressed file sent directly to the recipient.
Why are messages divided into equal-size packets in data transmission?
To make them harder to intercept.
To ensure they are easier to handle and transmit.
To reduce the size of the original message.
To avoid the need for a network.
What is the advantage of dividing messages into equal-size packets?
It allows for faster transmission of large files.
It prevents data loss during transmission.
It simplifies handling compared to an assortment of differently sized files.
It eliminates the need for a network protocol.
What is circuit switching in communication networks?
A method of sending messages in packets over a shared network.
A technology that establishes a dedicated, private link between two telephones for the duration of a call.
A system that allows multiple users to share the same communication channel simultaneously.
A process of encrypting messages for secure communication.
Why is circuit switching considered inefficient?
It requires encryption for every communication.
It allows multiple users to share the same circuit simultaneously.
The reserved circuit cannot be used for other communications when no communication is taking place.
It uses packet switching instead of dedicated links.
Which of the following is an example of a communication network that uses circuit switching?
Telephone systems.
Internet-based messaging systems.
Wireless networks.
Satellite communication systems.
What happens to the circuit in circuit switching when someone is on hold?
The circuit is released for other communications.
The circuit remains reserved and cannot be used for other communications.
The circuit switches to packet mode.
The circuit encrypts the communication for security.
What is the more efficient alternative to circuit switching mentioned in the text?
Message switching
Packet switching
Circuit routing
Data streaming
How does packet switching handle messages?
It sends the entire message at once.
It divides a message into several packets that are routed independently.
It stores the message until all packets are available.
It uses a single communication channel for each message.
What happens if some packets from a message are not available in packet switching?
The system waits for all packets to arrive before sending.
The system moves on to send packets from other messages.
The system stops the communication process.
The system sends incomplete messages.
What is the result of packet switching as described in the text?
A delayed stream of data.
A steady stream of data.
A fragmented stream of data.
A single-channel stream of data.
What does each circuit in a circuit-switching network dedicate to communication?
An entire channel to one sender and one receiver
A shared channel among multiple senders and receivers
A partial channel to one sender and one receiver
A dynamic channel that changes based on network traffic
What is the primary characteristic of a circuit-switching network?
Channels are shared among multiple users
Channels are dynamically allocated based on demand
Channels are dedicated to one sender and one receiver
Channels are used for broadcasting messages to all users
Why might sending an entire message in a circuit-switching network be inefficient?
It requires splitting the message into smaller packets
It dedicates an entire channel, which may remain idle during communication gaps
It allows multiple users to share the same channel
It uses dynamic routing, which increases complexity
What is the main advantage of a packet-switching network compared to a circuit-switching network?
It provides a dedicated channel for each device.
It allows multiple devices to share a single communication channel.
It ensures that messages are sent as a whole without being divided.
It requires less planning and infrastructure than circuit-switching.
Why is it not efficient to send an entire message in a single transmission in a network?
It increases the risk of data loss during transmission.
It requires more bandwidth than sending packets.
It prevents other devices from using the channel simultaneously.
It ensures faster delivery of the message.
What is the primary responsibility of TCP (Transmission Control Protocol) in the process of creating packets?
Dividing files into chunks, adding headers, and verifying data integrity
Encrypting data for secure transmission
Compressing files to reduce size
Managing the physical connection between devices
What process ensures that data is not corrupted while in transit when using TCP?
Error checking
Data encryption
Packet compression
Header modification
What happens to data sent over the Internet using TCP?
It reliably reaches its destination
It is encrypted for security
It is compressed to save bandwidth
It is stored temporarily on the server
Which of the following is true about TCP?
It is built into applications that transmit data between digital devices
It is responsible for encrypting data during transmission
It compresses files to reduce their size
It manages the physical hardware connections between devices
What is the primary responsibility of TCP in packet transportation?
Establishing a connection, transferring packets, and closing the connection when the transmission is complete
Performing error checking and reordering packets
Streaming video and music without data loss
Using communication ports for data transfer
Which transport protocol is faster but does not perform error checking or reorder packets?
TCP
UDP
HTTP
FTP
