Development and Testing ITP-110 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the primary purpose of the integration and testing phase in the IoT system development life cycle?

   • ATo decommission the system and archive data
   • BTo define the overall system architecture and technology stack
   • CTo combine individual components and verify that the system meets functional, performance, and security requirements
   • DTo write the initial code for each component in isolation
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A smart-parking startup is developing a sensor that detects whether a parking spot is occupied and sends the status to a cloud service. The hardware team has built a prototype using a magnetic sensor. The firmware team needs to calibrate the sensor so it can distinguish between a car parked above it and a passing vehicle. Which testing activity is MOST appropriate during the development phase?

   • ACollect magnetic-field readings with a car parked over the sensor and with the spot empty, then set a threshold between the two distributions.
   • BAsk the cloud team to adjust the detection threshold remotely after deployment.
   • CUse the sensor manufacturer's datasheet threshold without any field testing.
   • DTest the sensor only in a laboratory with a small magnet to simulate a car.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A utility company is deploying smart meters that connect to a mesh network. During integration testing, the team finds that when one meter is rebooted, the entire mesh segment loses connectivity for several minutes. The mesh protocol is supposed to self-heal by rerouting around the failed node. What should the team investigate FIRST?

   • AWhether the mesh routing protocol's convergence time is too slow for the application's availability requirements.
   • BWhether the meter's battery is low and causing intermittent power issues.
   • CWhether the cloud server is rejecting the meter's reconnection requests.
   • DWhether the rebooted meter's firmware is corrupt and needs to be reflashed.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A city is deploying a network of air-quality monitors that upload data to a central server every 5 minutes. During integration testing, the team notices that the server occasionally receives duplicate readings from the same monitor. The monitor's firmware retries transmission when it does not receive an acknowledgment. What is the MOST appropriate way to handle this in the system design?

   • AStore all duplicates in the database and let the analytics team filter them later.
   • BIncrease the acknowledgment timeout so the firmware is less likely to retry.
   • CInclude a unique message ID in each reading and have the server deduplicate based on it.
   • DRemove the retry logic from the firmware so duplicates cannot occur.
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A medical-device manufacturer is integrating a new wearable heart-rate monitor with its existing patient portal. The device team has unit-tested the firmware, and the portal team has unit-tested the REST API. During system integration testing, they find that the portal occasionally receives malformed JSON payloads from the device. The device team says the payloads are valid when tested against a mock server. What is the most likely cause of this discrepancy, and what should the team do?

   • AThe device and portal are using different JSON schema versions; align them on a shared schema contract before retesting.
   • BThe device's radio is dropping bytes; switch from Bluetooth to Zigbee.
   • CThe portal team should ignore malformed payloads and log them for later analysis.
   • DThe portal's API gateway is corrupting the payloads; replace the gateway with a direct connection.
   Reveal Solution Discussion Select an answer first