MCQs

Disclaimer:

Educational Use Only:

The website links provided are to be used strictly for educational and knowledge-gaining purposes only.

No Misuse:

Do not misuse the links or the information contained therein for any commercial, illegal, or unethical activities.

Respect for Websites and Businesses:

Respect the intellectual property and business interests of the websites and their owners. Do not attempt to alter, copy, or redistribute content without proper authorization.

Acknowledge Value of Knowledge:

Recognize and value the knowledge and resources shared by these websites. Use the information responsibly and ethically.

No Endorsement:

The provision of these links does not imply endorsement of the linked sites, their content, or their products and services. Users are responsible for evaluating the suitability and accuracy of the information.

User Responsibility:

By accessing these links, you agree to use the information at your own risk and to comply with all applicable laws and website terms of use.

1. Which transmission mode allows communication in both directions simultaneously?
   a. Simplex
   b. Half-duplex
   c. Full-duplex
   d. Unidirectional
   Answer: c. Full-duplexexamradar+2
2. In half-duplex mode, devices:
   a. Transmit only
   b. Cannot transmit
   c. Transmit and receive simultaneously
   d. Transmit or receive, but not at the same time
   Answer: d. Transmit or receive, but not at the same timegeeksforgeeks+2
3. Example of a full-duplex system is:
   a. Walkie-talkie
   b. Keyboard
   c. Telephone network
   d. Repeater
   Answer: c. Telephone networkpslightwave+2
4. What device operates in half-duplex mode?
   a. Telephone
   b. Walkie-talkie
   c. Mouse
   d. Fiber Optic Link
   Answer: b. Walkie-talkiesanfoundry+2
5. Which of the following is a simplex device?
   a. Keyboard
   b. Switch
   c. Telephone
   d. Router
   Answer: a. Keyboardtechtarget+2
6. In a simplex transmission, communication is:
   a. Bidirectional with switching
   b. Only in one direction
   c. Both directions at all times
   d. Simultaneous both ways
   Answer: b. Only in one directionexamradar+2
7. Full-duplex communication eliminates:
   a. Data transmission
   b. Network collisions
   c. Bidirectional transfer
   d. Error correction
   Answer: b. Network collisionslenovo+2
8. Which term describes a bidirectional communication using two simplex channels?
   a. Dual-simplex
   b. Simplex
   c. Mono-duplex
   d. Multi-path
   Answer: a. Dual-simplexwikipedia+2
9. Half-duplex is most efficient when:
   a. Simultaneous sending is required
   b. One-way communication suffices
   c. Both directions transmit but not at same time
   d. No transmission is needed
   Answer: c. Both directions transmit but not at same timetestbook+2
10. Frequency-division duplexing divides channel capacity by:
    a. Path length
    b. Assigning subchannels with different frequencies
    c. Bandwidth reservation
    d. Using only half paths
    Answer: b. Assigning subchannels with different frequenciesgeeksforgeeks+2
11. In half-duplex mode, the channel’s full capacity is used for:
    a. Both directions simultaneously
    b. One direction at a time
    c. Idle transmission
    d. Error reporting
    Answer: b. One direction at a timeswatcom+2
12. Which duplex mode is used by traditional Ethernet on a coaxial cable?
    a. Full-duplex
    b. Simplex
    c. Half-duplex
    d. Asynchronous
    Answer: c. Half-duplexplacementpreparation+2
13. What is the key benefit of full-duplex communication?
    a. High error rate
    b. Real-time bidirectional data
    c. One-way only
    d. Low resource usage
    Answer: b. Real-time bidirectional datatechtarget+2
14. Which device usually uses simplex transmission?
    a. Telephone
    b. Walkie-talkie
    c. Monitor
    d. NIC
    Answer: c. Monitortotalphase+2
15. Which transmission mode requires two physically separate paths for sending and receiving?
    a. Half-duplex
    b. Simplex
    c. Full-duplex
    d. Random access
    Answer: c. Full-duplexgeeksforgeeks+2
16. Walkie-talkies operate in which transmission mode?
    a. Simplex
    b. Full-duplex
    c. Half-duplex
    d. Dual path
    Answer: c. Half-duplexsanfoundry+2
17. What mode has both stations able to transmit but only one at a time?
    a. Simplex
    b. Half-duplex
    c. Full-duplex
    d. Parallel
    Answer: b. Half-duplexgeeksforgeeks+2
18. Which duplex mode is ideal for real-time applications like video conferencing?
    a. Full-duplex
    b. Half-duplex
    c. Simplex
    d. Redundant
    Answer: a. Full-duplexlenovo+2
19. What is not characteristic of simplex systems?
    a. Unidirectional transmission
    b. No feedback path
    c. Simultaneous send and receive
    d. Used for keyboard-to-computer connectivity
    Answer: c. Simultaneous send and receivetotalphase+2
20. In full-duplex Ethernet, simultaneous transmission is enabled between:
    a. Each node and switch
    b. All nodes on bus
    c. Only end devices
    d. None of the above
    Answer: a. Each node and switchpslightwave+2
21. Which mode sends data in only one direction and never receives response?
    a. Half-duplex
    b. Simplex
    c. Full-duplex
    d. Multiplex
    Answer: b. Simplexexamradar+2
22. Which transmission mode allows for channel capacity division between signals traveling in both directions?
    a. Multiplex
    b. Simplex
    c. Full-duplex
    d. Half-duplex
    Answer: c. Full-duplexwikipedia+2
23. Telephony networks commonly use:
    a. Simplex
    b. Full-duplex
    c. Half-duplex
    d. Multi-simplex
    Answer: b. Full-duplextechtarget+2
24. What is required for full-duplex operation in fiber networks?
    a. Only one core
    b. Two separate cores
    c. Just a transmitter
    d. No requirement
    Answer: b. Two separate coresgeeksforgeeks+2
25. A network switch and connected node can communicate in both directions simultaneously using:
    a. Simplex
    b. Half-duplex
    c. Full-duplex
    d. Redundant paths
    Answer: c. Full-duplexpslightwave+2
26. Which duplex mode is less expensive in terms of physical hardware?
    a. Full-duplex
    b. Half-duplex
    c. Simplex
    d. Multi-duplex
    Answer: b. Half-duplexswatcom+2
27. Full-duplex mode is more complex than half-duplex because it:
    a. Needs two communication paths
    b. Supports only one direction
    c. Requires idle periods
    d. Is rarely used
    Answer: a. Needs two communication pathslenovo+2
28. In half-duplex, transmission is:
    a. Always simultaneous
    b. Possible in both directions, but not at same time
    c. Unidirectional only
    d. Always asynchronous
    Answer: b. Possible in both directions, but not at same timetestbook+2
29. Time-division multiplexing (TDM) can be used to achieve:
    a. Simplex communication
    b. Full-duplex communication via time slots
    c. Non-directional communication
    d. One-way transfer
    Answer: b. Full-duplex communication via time slotsgeeksforgeeks+2
30. Full-duplex communication provides:
    a. Lowest reliability
    b. Maximum error rates
    c. High reliability and accuracy
    d. No feedback
    Answer: c. High reliability and accuracytechtarget+2
31. Which duplex mode might cause bandwidth contention between sender and receiver?
    a. Full-duplex
    b. Simplex
    c. Half-duplex
    d. Multi-duplex
    Answer: c. Half-duplexgeeksforgeeks+2
32. Network devices using full-duplex cannot:
    a. Send and receive at same time
    b. Collide data on shared medium
    c. Communicate real-time
    d. Divide bandwidth
    Answer: b. Collide data on shared mediumcbtnuggets+2
33. Simplex channels include which of the following?
    a. Telephone
    b. Keyboard
    c. Wi-Fi
    d. NIC
    Answer: b. Keyboardtotalphase+2
34. In full-duplex mode, data can:
    a. Only be sent
    b. Only be received
    c. Be sent and received simultaneously
    d. Be lost
    Answer: c. Be sent and received simultaneouslylenovo+2
35. Half-duplex communication is commonly used in which field device?
    a. Mobile phone
    b. Ethernet switch
    c. Two-way radio
    d. Laser printer
    Answer: c. Two-way radiosanfoundry+2
36. Which of the following statements about simplex is false?
    a. It transmits in one direction only
    b. Sender cannot receive input
    c. Receiver cannot send response
    d. Both sender and receiver can communicate at the same time
    Answer: d. Both sender and receiver can communicate at the same timeexamradar+2
37. Full-duplex links support:
    a. Only one-way transmissions
    b. Bidirectional transmissions
    c. Multiple paths at once
    d. Store-and-forward only
    Answer: b. Bidirectional transmissionswikipedia+2
38. Half-duplex is appropriate when:
    a. Simultaneous communication is critical
    b. Real-time interactions are needed
    c. Communications are infrequent, not simultaneous
    d. No data is to be sent
    Answer: c. Communications are infrequent, not simultaneoustestbook+2
39. Shared media (like coaxial cable Ethernet) cannot support:
    a. Half-duplex transmission
    b. Simplex transmission
    c. Full-duplex transmission
    d. Data integrity
    Answer: c. Full-duplex transmissiontechtarget+2
40. Which communication mode is best for online gaming?
    a. Half-duplex
    b. Full-duplex
    c. Simplex
    d. Asynchronous mode
    Answer: b. Full-duplexgeeksforgeeks+2
41. Which duplex mode divides the channel’s capacity for signals going both directions?
    a. Simplex
    b. Full-duplex
    c. Half-duplex
    d. Redundant channel
    Answer: b. Full-duplexlenovo+2
42. In networking, half-duplex usually means:
    a. Transmission in one direction, no reply possible
    b. Transmission and reception, but one at a time
    c. Simultaneous bidirectional communication
    d. Multicast transmission only
    Answer: b. Transmission and reception, but one at a timecbtnuggets+2
43. Example of simplex communication:
    a. Telephone call
    b. Keyboard input
    c. Two-way radio
    d. Router update
    Answer: b. Keyboard inputtotalphase+2
44. Full-duplex requires which type of hardware design?
    a. Single channel
    b. Paired channels or divided capacity
    c. No hardware
    d. Idle channels
    Answer: b. Paired channels or divided capacitytechtarget+2
45. Which is a disadvantage of full-duplex transmission?
    a. Low reliability
    b. High error correction demand
    c. Expense and complexity
    d. Inaccurate transfer
    Answer: c. Expense and complexitygeeksforgeeks+2
46. Simplex mode’s primary characteristic is:
    a. One-way communication
    b. Simultaneity
    c. High bandwidth
    d. Buffering both directions
    Answer: a. One-way communicationexamradar+2
47. The main difference between half-duplex and full-duplex:
    a. Full-duplex supports simultaneous transmission in both directions
    b. Half-duplex is always faster
    c. Simplex is most complex
    d. Full-duplex can’t divide bandwidth
    Answer: a. Full-duplex supports simultaneous transmission in both directionswikipedia+2
48. Which mode is preferred when transmission errors need to be minimalized in mission-critical applications?
    a. Half-duplex
    b. Full-duplex
    c. Simplex
    d. Half-simplex
    Answer: b. Full-duplexgeeksforgeeks+2
49. What transmission mode does an Ethernet switch use with connected modern NICs?
    a. Simplex
    b. Full-duplex
    c. Half-duplex
    d. Redundant
    Answer: b. Full-duplexpslightwave+2
50. Which term best describes duplexing in networking?
    a. Data can move one direction
    b. Bidirectional data transport
    c. Random-access mode
    d. Buffer mode
    Answer: b. Bidirectional data transportpubnub+2

1. https://examradar.com/data-communication-transmission-mode-simplex-half-duplex-full-duplex-mcqs/
2. https://www.techtarget.com/searchnetworking/definition/full-duplex
3. https://www.geeksforgeeks.org/computer-networks/transmission-modes-computer-networks/
4. https://testbook.com/question-answer/inhalfduplexcommunication–66c76849740916971a7b93ee
5. https://www.cbtnuggets.com/blog/communication/half-duplex-vs-full-duplex
6. https://www.pslightwave.com/full-duplex-network/
7. https://www.sanfoundry.com/computer-fundamentals-questions-answers-transmission-modes/
8. https://www.swatcom.com/simplex-half-duplex-full-duplex-explained/
9. https://www.lenovo.com/us/en/glossary/duplex/
10. https://en.wikipedia.org/wiki/Duplex_(telecommunications)
11. https://www.totalphase.com/blog/2022/10/difference-between-half-duplex-vs-full-duplex/
12. https://www.geeksforgeeks.org/computer-networks/duplexing-techniques/
13. https://www.placementpreparation.io/mcq/computer-network/page/2/
14. https://www.pubnub.com/learn/glossary/duplex-communication/
15. https://www.sanfoundry.com/computer-network-questions-answers/
16. https://testbook.com/question-answer/infullduplexmodethec–66c7648fdc462902deaba173
17. https://www.scribd.com/document/377781095/Objective-Questions-With-Answers
18. https://www.youtube.com/watch?v=2QyaR_vwoTA
19. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
20. https://study.com/academy/practice/quiz-worksheet-simplex-half-duplex-duplex-communication-channels.html