MCQs

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1. What does bandwidth measure in a network?
   a. Maximum data transfer capacity
   b. Delay in data transmission
   c. Rate of packet loss
   d. Number of active connections
   Answer: a
   Source:obkio
2. What unit is bandwidth typically measured in?
   a. milliseconds (ms)
   b. bits per second (bps)
   c. packets
   d. bytes
   Answer: b
   Source:obkio
3. What is latency in networking?
   a. The amount of data sent per second
   b. The delay between sending and receiving data
   c. Ratio of lost packets to sent packets
   d. The size of buffer memory
   Answer: b
   Source:obkio
4. Which metric measures the total time for a packet to travel to the destination and back?
   a. Bandwidth
   b. Jitter
   c. Round Trip Time (RTT)
   d. Throughput
   Answer: c
   Source:obkio
5. What does packet loss represent in a network?
   a. Percentage of lost data packets during transmission
   b. Maximum capacity of a network link
   c. Delay variability between packets
   d. Number of users connected
   Answer: a
   Source:obkio
6. Jitter in network performance is:
   a. The average delay of packets
   b. The variation in delay among packets
   c. The total lost packets
   d. The throughput rate
   Answer: b
   Source:obkio
7. Throughput in networking is defined as:
   a. Maximum data that can be transferred
   b. Actual amount of data transferred successfully per time unit
   c. Delay in transmission
   d. Total number of packets sent
   Answer: b
   Source:obkio
8. Which metric is most important for real-time applications like video conferencing?
   a. Latency
   b. Packet loss
   c. Bandwidth
   d. Throughput
   Answer: a
   Source:obkio
9. Network utilization refers to:
   a. The amount of network capacity being used
   b. Total packets lost over time
   c. Maximum supported bandwidth
   d. Number of active devices
   Answer: a
   Source:obkio
10. Which of these metrics can indicate network congestion?
    a. High jitter and packet loss
    b. Low throughput
    c. High latency
    d. All of the above
    Answer: d
    Source:obkio
11. What is the significance of queue length in a router?
    a. Number of packets waiting in buffer
    b. Bandwidth capacity
    c. Latency rate
    d. Round trip time
    Answer: a
    Source:obkio
12. What does a high packet loss rate indicate?
    a. Network congestion or errors
    b. High bandwidth efficiency
    c. Good network health
    d. Low latency
    Answer: a
    Source:obkio
13. How is throughput typically measured?
    a. Bits per second
    b. Packets per millisecond
    c. Bytes per packet
    d. Number of connections
    Answer: a
    Source:obkio
14. What network metric is measured in milliseconds?
    a. Bandwidth
    b. Latency
    c. Packet loss
    d. Throughput
    Answer: b
    Source:obkio
15. Which of the following is a key performance indicator (KPI) for network speed?
    a. Bandwidth
    b. Latency
    c. Jitter
    d. All of the above
    Answer: d
    Source:obkio
16. What does the term “peak utilization” mean in networking?
    a. Highest bandwidth used during a time period
    b. Average bandwidth
    c. Minimum bandwidth used
    d. Number of connected devices
    Answer: a
    Source:obkio
17. What is one way to measure network throughput practically?
    a. Running speed tests
    b. Monitoring IP addresses
    c. Counting packets sent
    d. Checking MAC addresses
    Answer: a
    Source:obkio
18. Which metric is NOT directly related to network speed?
    a. Jitter
    b. Packet loss
    c. Round Trip Time
    d. Number of users
    Answer: d
    Source:obkio
19. Which network metric affects the user experience of voice calls the most?
    a. Latency and jitter
    b. Bandwidth only
    c. Packet loss only
    d. Queue length only
    Answer: a
    Source:obkio
20. How do network administrators use network utilization data?
    a. To plan capacity upgrades
    b. To disable network devices
    c. To increase packet loss
    d. To set IP addresses
    Answer: a
    Source:obkio
21. Which metric measures delay variability of packet delivery?
    a. Jitter
    b. Latency
    c. Throughput
    d. Bandwidth
    Answer: a
    Source:obkio
22. What does a low Round Trip Time (RTT) indicate?
    a. Fast network response
    b. High packet loss
    c. Network congestion
    d. Low bandwidth
    Answer: a
    Source:obkio
23. What is an effect of high network latency?
    a. Slower response for applications
    b. Increased throughput
    c. Reduced packet loss
    d. Higher bandwidth
    Answer: a
    Source:obkio
24. Which metric is crucial for streaming services?
    a. Low jitter and latency
    b. High packet loss
    c. Low bandwidth
    d. High queue length
    Answer: a
    Source:obkio
25. What is a typical cause of packet loss?
    a. Congestion and network errors
    b. Large bandwidth
    c. Low latency
    d. High throughput
    Answer: a
    Source:obkio
26. The term “bandwidth utilization” refers to:
    a. Percentage of bandwidth currently used
    b. Total bandwidth available
    c. Number of connected devices
    d. Network latency measure
    Answer: a
    Source:obkio
27. What is the relationship between bandwidth and throughput?
    a. Throughput is the actual data sent; bandwidth is the maximum possible
    b. They are the same
    c. Bandwidth is always less than throughput
    d. Throughput does not affect bandwidth
    Answer: a
    Source:obkio
28. What is queue length?
    a. Number of packets waiting for transmission
    b. Time delay in network
    c. Maximum bandwidth
    d. Number of lost packets
    Answer: a
    Source:obkio
29. Which metric is most affected by network congestion?
    a. Packet loss and latency
    b. Throughput only
    c. Bandwidth only
    d. Jitter only
    Answer: a
    Source:obkio
30. What is the typical unit for jitter?
    a. milliseconds (ms)
    b. bits per second (bps)
    c. packets
    d. bytes
    Answer: a
    Source:obkio
31. What does throughput measure that bandwidth does not?
    a. Actual successful data transmission speed
    b. Network delay
    c. Error rates
    d. Number of devices
    Answer: a
    Source:obkio
32. What is an ideal characteristic of latency for gaming?
    a. Low latency
    b. High latency
    c. Variable latency
    d. Latency over 100ms
    Answer: a
    Source:obkio
33. A network with high jitter is likely to experience:
    a. Variable packet delays causing poor quality
    b. Consistent data flow
    c. Zero packet loss
    d. Maximum throughput
    Answer: a
    Source:obkio
34. Which metric would you monitor to ensure fast web page loading?
    a. Latency and throughput
    b. Packet loss only
    c. Jitter only
    d. Queue length only
    Answer: a
    Source:obkio
35. Which network issue directly causes retransmission of packets?
    a. Packet loss
    b. High throughput
    c. High bandwidth
    d. Low latency
    Answer: a
    Source:obkio
36. What is throughput influenced by?
    a. Network congestion
    b. Maximum bandwidth only
    c. Number of devices only
    d. Packet size only
    Answer: a
    Source:obkio
37. Which of these can affect latency negatively?
    a. Network congestion and long physical distances
    b. Large bandwidth
    c. Low jitter
    d. High throughput
    Answer: a
    Source:obkio
38. What does a high queue length at a router suggest?
    a. Network congestion or overload
    b. High bandwidth availability
    c. Low packet loss
    d. Fast data transmission
    Answer: a
    Source:obkio
39. What metric is used to measure how efficiently a network carries traffic?
    a. Network utilization
    b. Jitter
    c. Latency
    d. Round Trip Time
    Answer: a
    Source:obkio
40. What does a high packet loss rate usually mean for TCP-based applications?
    a. Reduced throughput due to retransmissions
    b. Increased bandwidth usage
    c. Faster data transmission
    d. No impact on performance
    Answer: a
    Source:obkio
41. How does jitter impact VoIP calls?
    a. Causes choppy audio and degraded call quality
    b. Improves call clarity
    c. Increases call duration
    d. Has no impact
    Answer: a
    Source:obkio
42. Bandwidth in a network is analogous to:
    a. The width of a water pipe
    b. The speed of water flow
    c. The color of the pipe
    d. The temperature of water
    Answer: a
    Source:obkio
43. How does high throughput benefit file transfers?
    a. Files transfer faster
    b. Files transfer slower
    c. Files get corrupted
    d. No effect on transfer speed
    Answer: a
    Source:obkio
44. Which metric is most impacted by physical distance in the network?
    a. Latency
    b. Packet loss
    c. Throughput
    d. Jitter
    Answer: a
    Source:obkio
45. What network metric might be high if many packets arrive out of order?
    a. Packet reordering
    b. Bandwidth
    c. Latency
    d. Network utilization
    Answer: a
    Source:obkio
46. What does an increase in network utilization indicate?
    a. More traffic is being carried by the network
    b. Network is idle
    c. Network is disconnected
    d. Lower data transmission
    Answer: a
    Source:obkio
47. Which metric is useful to determine quality of experience in streaming?
    a. Jitter and packet loss
    b. Bandwidth alone
    c. Latency alone
    d. Queue length only
    Answer: a
    Source:obkio
48. What metric is a measure of the time delay variance that affects video call stability?
    a. Jitter
    b. Packet loss
    c. Throughput
    d. Bandwidth
    Answer: a
    Source:obkio
49. Which network metric can be reduced by using Quality of Service (QoS)?
    a. Latency and jitter
    b. Bandwidth only
    c. Packet loss only
    d. Network utilization only
    Answer: a
    Source:obkio
50. To improve video streaming quality, which network metric is most critical to monitor?
    a. Jitter
    b. Bandwidth
    c. Network utilization
    d. Packet size
    Answer: a
    Source:obkio

1. https://obkio.com/blog/how-to-measure-network-performance-metrics/
2. https://www.sanfoundry.com/computer-network-questions-answers/
3. https://www.uninets.com/blog/computer-networks-mcq
4. https://testbook.com/objective-questions/mcq-on-network-theory–5eea6a0e39140f30f369e527
5. https://www.sanfoundry.com/1000-network-theory-questions-answers/
6. https://www.ccbp.in/blog/articles/computer-network-mcq
7. https://www.watelectronics.com/mcq/network-devices/
8. https://testbook.com/objective-questions/mcq-on-networking–5eea6a1639140f30f369f551
9. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
10. https://wayground.com/admin/quiz/67bebc4c8d6281a7e925dedf/network-metrics
11. https://www.watelectronics.com/mcq/computer-networks/
12. https://www.scribd.com/document/513484664/Computer-Network-1
13. https://test.sanfoundry.com/computer-network-tests/
14. https://www.placementpreparation.io/mcq/computer-network/page/5/
15. https://bcetodisha.ac.in/elearning/content/mca_uploads/2nd/Computer-Network-MCQ.pdf
16. https://testbook.com/question-answer/which-of-the-following-network-metrics-are-used-to–616d3684bf02b43a13927dfe
17. https://www.scribd.com/document/487987617/Unit-01-02-MCQs-NA-pdf
18. https://scholarexpress.com/computer-networks-multiple-choice-questions/
19. https://mockrounds.com/cs_fundamentals/essential-network-performance-metrics-latency-jitter-and-throughput-quiz/
20. https://interviewkickstart.com/blogs/articles/computer-network-mcqs-answers