Development and Testing ITP-110 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A security company is developing a wireless door/window sensor that must have a battery life of at least 5 years. The sensor uses a CR2032 coin-cell battery (approximately 220 mAh). The firmware developer estimates the average current draw is 15 µA. The hardware team has verified the design in the lab. During integration testing, the team wants to confirm the battery life estimate before mass production. Which testing method is MOST appropriate?

   • AReplace the coin-cell battery with a larger battery to ensure the 5-year life.
   • BMeasure the current draw continuously for 24 hours and multiply by 365 to estimate annual consumption.
   • CRun an accelerated life test by operating the sensor at an elevated temperature and higher duty cycle, then extrapolate the results.
   • DTrust the firmware developer's estimate and proceed to mass production.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A home-automation company is developing a smart lock that connects to a mobile app via Bluetooth and to the cloud via Wi-Fi. During development, the team needs to verify that the lock's firmware can be updated remotely without a physical connection. Which approach should they implement and test?

   • ARequire the user to bring the lock to a service center for a wired firmware update.
   • BSend the firmware image over Bluetooth from the mobile app only when the lock is in pairing mode.
   • CShip a new microcontroller with updated firmware to each customer.
   • DOver-the-air (OTA) firmware update via the Wi-Fi connection, with a rollback mechanism if the new image fails to boot.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A robotics company is developing an autonomous warehouse robot that navigates using a LiDAR sensor and an onboard computer. The robot must avoid obstacles and send its location to a central fleet-management server. During development, the team needs to test the obstacle-avoidance algorithm without risking damage to the physical robot. Which approach is MOST appropriate?

   • ATest the algorithm only in a pure software simulation on a desktop computer.
   • BSkip algorithm testing and rely on the LiDAR manufacturer's certification.
   • CRun the robot in a fenced-off area with soft obstacles to test the algorithm physically.
   • DUse a hardware-in-the-loop (HIL) simulation where the real robot's computer runs the algorithm and receives simulated LiDAR data.
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A hospital is deploying a network of infusion pumps that communicate over Wi-Fi to a central monitoring system. The pumps are safety-critical and must report alarms within 2 seconds. During integration testing, the team finds that alarm delivery is delayed by up to 10 seconds when the Wi-Fi network is congested. The network team suggests adding more access points, but the budget is limited. The pump vendor suggests increasing the alarm retransmission count. Which approach is the BEST way to meet the latency requirement?

   • AMove all pumps to a dedicated, separate Wi-Fi network for alarms only.
   • BReduce the frequency of routine telemetry data from the pumps to free up bandwidth.
   • CImplement a priority mechanism (e.g., 802.11e/WMM) on the access points and pumps so alarm traffic is prioritized over routine telemetry.
   • DIncrease the alarm retransmission count on the pumps to ensure the message gets through.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which type of testing is specifically focused on verifying that an IoT system can handle expected data loads and response times?

   • AUnit testing
   • BUsability testing
   • CSecurity testing
   • DPerformance testing
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