MCQs

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1. Which type of sensor is primarily used to monitor network traffic without affecting existing flows?
   a. Active sensor
   b. Passive sensor
   c. Analog sensor
   d. Digital sensor
   Answer: b. Passive sensorcbtnuggets
2. What is the main function of active sensors in networking?
   a. They monitor environmental temperature
   b. They simulate network activity by sending test packets
   c. They passively collect data
   d. They amplify signal strength
   Answer: b. They simulate network activity by sending test packetscbtnuggets
3. Which tool is commonly used as a passive performance sensor for network packet analysis?
   a. Iperf
   b. Wireshark
   c. Ping
   d. Traceroute
   Answer: b. Wiresharkcbtnuggets
4. What does a network performance sensor typically measure?
   a. Physical address
   b. Application data
   c. Performance metrics like bandwidth and latency
   d. Hostname
   Answer: c. Performance metrics like bandwidth and latencycbtnuggets
5. Which performance sensor type is best for real-time troubleshooting of connectivity issues?
   a. Passive sensor
   b. Trace sensor
   c. Active sensor
   d. Pressure sensor
   Answer: c. Active sensorcbtnuggets
6. The Iperf tool is used to measure which network performance metric?
   a. Link status
   b. Throughput
   c. Noise level
   d. DNS resolution time
   Answer: b. Throughputcbtnuggets
7. Among network performance metrics, what does packet loss indicate?
   a. Device uptime
   b. Data not reaching its destination
   c. High throughput
   d. Strong signal
   Answer: b. Data not reaching its destinationexabeam
8. SNMP sensors are widely used in network monitoring to collect which type of data?
   a. Environmental
   b. Device performance
   c. Audio signals
   d. Analog measurements
   Answer: b. Device performancenetwrix
9. What advantage do passive sensors have over active sensors in performance monitoring?
   a. Cost efficiency
   b. No impact on traffic flow
   c. Higher speed
   d. Real-time results only
   Answer: b. No impact on traffic flowcbtnuggets
10. Network performance monitoring tools use which communication protocol to poll device metrics?
    a. HTTP
    b. SMTP
    c. SNMP
    d. FTP
    Answer: c. SNMPnetwrix
11. Which sensor is essential for monitoring network application layer performance?
    a. Packet sniffer
    b. Pressure sensor
    c. Accelerometer
    d. Proximity sensor
    Answer: a. Packet sniffercbtnuggets
12. What does NetFlow analyzer primarily monitor?
    a. Audio quality
    b. Network bandwidth and traffic
    c. Device temperature
    d. Magnetic fields
    Answer: b. Network bandwidth and trafficexabeam
13. The Zabbix monitoring tool supports the analysis of which sensor data type?
    a. Energy sensors
    b. SNMP data from network hardware
    c. Humidity sensors
    d. Camera feeds
    Answer: b. SNMP data from network hardwareexabeam
14. Which metric is most relevant when using sensors to assess network delay?
    a. Throughput
    b. Jitter
    c. Latency
    d. Packet size
    Answer: c. Latencyijert
15. What is the primary purpose of deploying sensors in a wireless sensor network (WSN)?
    a. Data encryption
    b. Performance monitoring
    c. Video streaming
    d. Antenna adjustment
    Answer: b. Performance monitoringijert
16. Which sensor-based metric helps analyze real-time video streaming performance in WSNs?
    a. Noise
    b. Jitter
    c. Power
    d. Vibration
    Answer: b. Jitterijert
17. Packet delivery fraction measured by network sensors is essential for evaluating what?
    a. Energy consumption
    b. Classification accuracy
    c. Reliability of network transmission
    d. Buffer size
    Answer: c. Reliability of network transmissionijert
18. What is the function of temperature sensors in networking devices?
    a. Signal amplification
    b. Hardware health monitoring
    c. Security analysis
    d. Data compression
    Answer: b. Hardware health monitoringexabeam
19. Network sensors can generate performance alarms based on which event?
    a. Power loss
    b. Bandwidth thresholds exceeded
    c. System reboot
    d. Device renaming
    Answer: b. Bandwidth thresholds exceededexabeam
20. Which network sensor metric best describes usage patterns over time?
    a. Maximum temperature
    b. Average traffic throughput
    c. Packet length
    d. Device uptime
    Answer: b. Average traffic throughputexabeam
21. What performance issue does the Zabbix alert system help detect?
    a. Outdated firmware
    b. Network spikes or packet loss
    c. Disk fragmentation
    d. Malicious scripts
    Answer: b. Network spikes or packet lossexabeam
22. In which scenario would an end-to-end delay sensor be useful?
    a. Firmware upgrades
    b. Disaster recovery
    c. VOIP call quality monitoring
    d. Device inventory
    Answer: c. VOIP call quality monitoringijert
23. Nagios Network Analyzer focuses on which kind of sensor data?
    a. Contact sensors
    b. NetFlow and sFlow data
    c. Image sensors
    d. Proximity sensors
    Answer: b. NetFlow and sFlow dataexabeam
24. What does an error rate sensor track in device networks?
    a. Power supply status
    b. Transmission errors
    c. Image quality
    d. Fan rotation speed
    Answer: b. Transmission errorsexabeam
25. Why are energy sensors important in wireless sensor networks?
    a. They store data
    b. They monitor power consumption
    c. They track video engagement
    d. They decode signals
    Answer: b. They monitor power consumptiongeeksforgeeks
26. What metric do performance sensors typically use for measuring link stability?
    a. Bit error rate
    b. Voltage drop
    c. Physical contact
    d. Storage utilization
    Answer: a. Bit error rateexabeam
27. Bandwidth utilization calculators in performance sensor systems help achieve what outcome?
    a. Increased temperature
    b. Traffic pattern tracking
    c. Reduced humidity
    d. Faster boot times
    Answer: b. Traffic pattern trackingexabeam
28. Which sensor metric is analyzed to optimize resource allocation in computer networks?
    a. Average delay
    b. Pressure
    c. Dust density
    d. Temperature
    Answer: a. Average delayijert
29. What information does TCP connection sensor data provide?
    a. Jitter
    b. Connection count and reliability
    c. Throughput per second
    d. Sensor voltage
    Answer: b. Connection count and reliabilityexabeam
30. Why are application performance sensors critical for user experience in networks?
    a. They provide video resolution
    b. They monitor response times and service quality
    c. They measure humidity
    d. They enable encryption
    Answer: b. They monitor response times and service qualitycbtnuggets
31. Which performance sensor type helps monitoring interface error rates in network devices?
    a. Passive sensor
    b. IO sensor
    c. SNMP sensor
    d. Hall sensor
    Answer: c. SNMP sensorexabeam
32. What is the use of alert suppression in performance monitoring sensors?
    a. To prevent false alarms during maintenance
    b. To enable faster data transmission
    c. To increase battery life
    d. To upgrade firmware
    Answer: a. To prevent false alarms during maintenanceexabeam
33. Real-time monitoring with sensors provides network admins which key advantage?
    a. Historical analysis only
    b. Early problem detection and response
    c. Increased firmware versions
    d. None
    Answer: b. Early problem detection and responsecloudnuro
34. What is the main output of a network sensor’s visualization dashboard?
    a. Device configuration
    b. Metrics and trends for quick understanding
    c. Encryption keys
    d. File formats
    Answer: b. Metrics and trends for quick understandingcloudnuro
35. Which strategy do performance sensors use to identify root causes of network issues?
    a. Packet counting
    b. Root cause analysis
    c. Alarm suppression
    d. Change logging
    Answer: b. Root cause analysiscloudnuro
36. Which type of sensor is best for monitoring hardware environmental metrics in a network?
    a. Pressure sensor
    b. Temperature sensor
    c. SNMP-based sensor
    d. Light sensor
    Answer: c. SNMP-based sensorexabeam
37. How do network performance sensors assist in proactive issue detection?
    a. By monitoring only analog signals
    b. By generating alerts for detected anomalies
    c. By preventing all device reboots
    d. By blocking packet transmission
    Answer: b. By generating alerts for detected anomaliescloudnuro
38. What performance improvement can be achieved by efficient sensor deployment in a network?
    a. Increased data compression
    b. Improved network uptime
    c. More powerful servers
    d. Larger device inventory
    Answer: b. Improved network uptimecloudnuro
39. How does end-to-end delay sensor data support network service class differentiation?
    a. By monitoring firmware version
    b. By measuring delay for VOIP, video, and polling services
    c. By counting device restarts
    d. By toggling LED indicators
    Answer: b. By measuring delay for VOIP, video, and polling servicesijert
40. What functionality does a sensor-based escalation workflow support in network monitoring?
    a. Notification of relevant users or departments
    b. System restart
    c. Memory allocation
    d. Code deployment
    Answer: a. Notification of relevant users or departmentsexabeam
41. In wireless sensor networks, polling service sensors are typically associated with what type of applications?
    a. Constant Bit Rate
    b. Delay dependent
    c. FTP traffic
    d. Hardware health
    Answer: c. FTP trafficijert
42. Why is aggregation of sensor data across time periods important?
    a. For calculating minimum, maximum, and average values
    b. For encrypting traffic
    c. For improving routing algorithms
    d. For updating drivers
    Answer: a. For calculating minimum, maximum, and average valuesexabeam
43. Which metric is NOT typically measured by network performance sensors?
    a. CPU load
    b. Humidity
    c. Network traffic
    d. Packet loss
    Answer: b. Humidityexabeam
44. Which tool can act as a log monitoring sensor in network performance systems?
    a. Trace analyzer
    b. Log monitoring tools
    c. Pressure gauge
    d. Light sensor
    Answer: b. Log monitoring toolscbtnuggets
45. Utilization of performance sensor dashboards enables network administrators to do what?
    a. Visualize network health
    b. Monitor sensor voltage
    c. Update software versions
    d. Monitor humidity
    Answer: a. Visualize network healthexabeam
46. What is a critical benefit of using both passive and active sensors together?
    a. Increased data redundancy
    b. Combined real-time and user-experience monitoring
    c. Only historical reporting
    d. Encryption capability
    Answer: b. Combined real-time and user-experience monitoringcbtnuggets
47. Network monitoring sensors using sFlow protocols are mainly deployed for what?
    a. Tracking packet loss
    b. Analyzing traffic flows
    c. Measuring humidity
    d. Upgrading firmware
    Answer: b. Analyzing traffic flowsexabeam
48. Performance sensors using packet sniffing techniques are vulnerable to what risk?
    a. Power surges
    b. Data privacy concerns
    c. Faster boot times
    d. Software installation issues
    Answer: b. Data privacy concernscbtnuggets
49. What is one limitation of monitoring performance with only active sensors?
    a. No real traffic analysis
    b. No hardware alarm
    c. Poor visualization
    d. Increased heat
    Answer: a. No real traffic analysiscbtnuggets
50. A comprehensive network health view is possible with performance sensors that monitor which combination of metrics?
    a. Signal strength and delay only
    b. Bandwidth, latency, packet loss, device health
    c. CPU usage and power only
    d. Pressure and vibration only
    Answer: b. Bandwidth, latency, packet loss, device healthcloudnuro+2

1. https://www.cbtnuggets.com/blog/technology/networking/what-are-performance-metrics-and-sensors
2. https://www.exabeam.com/explainers/network-security/8-network-monitoring-tools-to-know-in-2025/
3. https://blog.netwrix.com/2023/12/27/network-monitoring-tools/
4. https://www.ijert.org/performance-metrics-in-wireless-sensor-network
5. https://www.geeksforgeeks.org/computer-networks/wireless-sensor-network-wsn/
6. https://www.cloudnuro.ai/blog/top-10-network-performance-monitoring-tools-for-it-teams-2025
7. https://www.watelectronics.com/mcq/sensors/
8. https://www.sanfoundry.com/1000-iot-questions-answers/
9. https://testbook.com/objective-questions/mcq-on-sensors-and-industrial-instrumentation–5eea6a1139140f30f369e9ec
10. https://www.scribd.com/doc/260955922/MULTIPLE-CHOICE-QUESTIONS-WITH-ANSWERS-ON-WIRELESS-SENSOR-NETWORKS
11. https://www.youtube.com/watch?v=hRnGCJGlMFY
12. https://www.sanfoundry.com/instrumentation-transducers-question-answers-sensor-systems/
13. https://www.scribd.com/document/518279850/Sensors-MCQs-UNIT-1-to-5-for-Students
14. https://www.studocu.com/in/document/chm-higher-secondary-school/computer-science-sl/wsn-mcq/86242450
15. https://nybsys.com/types-of-sensors/
16. https://www.solarwinds.com/network-performance-monitor
17. https://testbook.com/objective-questions/mcq-on-computer-networks–5eea6a0939140f30f369d8f8
18. https://www.zipitwireless.com/blog/what-are-iot-sensors-types-uses-and-examples
19. https://www.manageengine.com/network-monitoring/network-performance-monitoring.html
20. https://automationcommunity.com/proximity-switch-questions-and-answers/