IoT Hardware Devices and Processors ISE Practice Questions (Page 7)

Questions 31–35

1. 31expert · hard

   A developer is writing firmware for a battery-powered sensor node that uses an RTOS. The node has a task that reads a sensor every second, a task that transmits data every minute, and a task that handles a button interrupt. The developer wants to minimize power consumption. Which RTOS configuration is most appropriate?

   • AUse tickless idle mode and put the processor into deep sleep when all tasks are blocked
   • BUse a fixed tick rate of 1 kHz to ensure precise timing for all tasks
   • CUse a cooperative scheduler to avoid context switching overhead
   • DDisable all interrupts and use polling to reduce RTOS overhead
   Reveal Solution Discussion Select an answer first
2. 32foundation · easy

   An IoT device needs to run a full operating system like Linux and support complex applications such as video processing. Which processor architecture is most appropriate for this requirement?

   • A8051
   • BRISC-V (RV32I)
   • CARM Cortex-M
   • DARM Cortex-A
   Reveal Solution Discussion Select an answer first
4. 33foundation · easy

   When selecting a processor for an IoT device that will be deployed in a high-temperature industrial environment, which criterion is most important to evaluate?

   • ANumber of GPIO pins
   • BWireless protocol support
   • CProcessor clock speed
   • DOperating temperature range
   Reveal Solution Discussion Select an answer first
5. 34foundation · easy

   Which of the following is a synchronous serial communication interface commonly used to connect low-speed peripherals like sensors and EEPROMs to an IoT processor?

   • AUSB
   • BGPIO
   • CI2C
   • DUART
   Reveal Solution Discussion Select an answer first
6. 35application · medium

   An engineer is choosing between a microcontroller and a microprocessor for a new IoT device. The device must run a complex machine learning model that requires large amounts of RAM and a full operating system. Which choice is most appropriate?

   • AMicroprocessor, because it can address large external RAM and run a full operating system.
   • BMicroprocessor, because it integrates flash memory on-chip, eliminating the need for external storage.
   • CMicrocontroller, because it integrates RAM and flash on-chip, reducing external memory.
   • DMicrocontroller, because it has lower power consumption, which is always the primary concern.
   Reveal Solution Discussion Select an answer first