ARM microcontrollers MCQ's
1. What does ARM stand for in ARM microcontrollers?
A) Advanced Robotics Microcontroller B) Advanced RISC Machine C) Advanced Radio Module D) Advanced Remote Monitoring
View Answer
 B) Advanced RISC Machine
2. Which company originally developed the ARM architecture?
A) Intel B) Motorola C) ARM Holdings D) IBM
View Answer
C) ARM Holdings
3. Which ARM Cortex-M core is known for its ultra-low power consumption?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
A) Cortex-M0
4. Which programming language is commonly used for writing firmware for ARM microcontrollers?
A) Python B) C++ C) Java D) Assembly Language
View Answer
D) Assembly Language
5. Which ARM Cortex-M core introduced the Memory Protection Unit (MPU) for enhanced security and memory protection capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
B) Cortex-M3
6. What is the primary function of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
6. What is the primary function of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
7. Which ARM Cortex-M core introduced the Floating-Point Unit (FPU) for hardware-accelerated floating-point operations?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
8. What is the purpose of the Wake-up Timer (WUT) in ARM Cortex-M microcontrollers?
A) To wake the microcontroller from low-power modes at specified intervals B) To measure the time taken for code execution C) To synchronize parallel processing tasks D) To generate clock signals for peripheral devices
View Answer
A) To wake the microcontroller from low-power modes at specified intervals
9. Which ARM Cortex-M core introduced the TrustZone technology for hardware-based security in microcontrollers?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M23
View Answer
D) Cortex-M23
10. What is the purpose of the CMSIS (Cortex Microcontroller Software Interface Standard) in ARM Cortex-M development?
A) To provide standardized hardware abstraction and peripheral driver interfaces B) To optimize code execution speed C) To handle inter-processor communication D) To implement cryptographic algorithms
View Answer
A) To provide standardized hardware abstraction and peripheral driver interfaces
11. Which tool is commonly used for debugging ARM microcontrollers on hardware platforms?
A) JTAG (Joint Test Action Group) B) UART (Universal Asynchronous Receiver-Transmitter) C) SPI (Serial Peripheral Interface) D) I2C (Inter-Integrated Circuit)
View Answer
A) JTAG (Joint Test Action Group)
12. Which ARM Cortex-M core is designed for applications requiring high-performance computing and advanced DSP capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
D) Cortex-M7
13. What is the function of the System Control Block (SCB) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
A) To provide control and configuration for system-level features
14. Which ARM Cortex-M core introduced the DSP (Digital Signal Processing) extension for improved signal processing capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
15. What is the purpose of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
16. Which ARM architecture provides hardware support for floating-point operations?
A) ARM7 B) ARM9 C) Cortex-M0 D) Cortex-M4
View Answer
D) Cortex-M4
17. What is the purpose of the SysTick timer in ARM Cortex-M processors?
A) To provide a real-time clock (RTC) B) To generate periodic interrupts for timekeeping C) To synchronize parallel processing tasks D) To monitor power consumption
View Answer
B) To generate periodic interrupts for timekeeping
18. Which ARM Cortex-M core features a Memory Protection Unit (MPU) for enhanced security and reliability?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
19. Which ARM Cortex-M core is optimized for low-power and cost-sensitive applications?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M23
View Answer
A) Cortex-M0
20. What is the primary advantage of using the Thumb instruction set in ARM Cortex-M processors?
A) Reduced power consumption B) Improved code execution speed C) Smaller memory footprint D) Enhanced security features
View Answer
C) Smaller memory footprint
21. Which toolchain is commonly used for developing software for ARM microcontrollers?
A) AVR-GCC B) Keil MDK C) MPLAB X IDE D) Arduino IDE
View Answer
B) Keil MDK
22. Which register is used to configure MPU region base address in ARM Cortex-M processors?
A) RBAR B) RASR C) RNR D) SHPR
View Answer
A) RBAR
23. What is the purpose of the WFI (Wait For Interrupt) instruction in ARM Cortex-M processors?
A) To wait for a specified time delay B) To enter a low-power sleep mode until an interrupt occurs C) To synchronize parallel processing tasks D) To generate clock signals for peripheral devices
View Answer
B) To enter a low-power sleep mode until an interrupt occurs
24. Which ARM Cortex-M core introduced the Thumb-2 instruction set?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
B) Cortex-M3
25. What is the purpose of the WFE (Wait For Event) instruction in ARM Cortex-M processors?
A) To wait for a specified time delay B) To enter a low-power sleep mode until an event occurs C) To synchronize parallel processing tasks D) To generate clock signals for peripheral devices
View Answer
B) To enter a low-power sleep mode until an event occurs
26. Which ARM Cortex-M core introduced the TrustZone for ARMv8-M technology?
A) Cortex-M0 B) Cortex-M23 C) Cortex-M33 D) Cortex-M7
View Answer
C) Cortex-M33
27. Which peripheral is responsible for handling interrupts in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
A) NVIC (Nested Vectored Interrupt Controller)
28. What is the function of the M4K memory protection unit (MPU) in ARM Cortex-M processors?
A) NVIC (Nested Vectored Interrupt Controller) B) SCB (System Control Block) C) SysTick Timer D) MPU (Memory Protection Unit)
View Answer
C) To handle memory access permissions
29. Which ARM Cortex-M core introduced the DSP (Digital Signal Processing) extension for improved signal processing capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
30. What is the purpose of the SysTick timer in ARM Cortex-M processors?
A) To provide a real-time clock (RTC) B) To generate periodic interrupts for timekeeping C) To synchronize parallel processing tasks D) To monitor power consumption
View Answer
B) To generate periodic interrupts for timekeeping
31. Which ARM Cortex-M core introduced the TrustZone technology for hardware-based security in microcontrollers?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M23
View Answer
D) Cortex-M23
32. What is the purpose of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
33. Which ARM Cortex-M core introduced the Memory Protection Unit (MPU) for enhanced security and memory protection capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
B) Cortex-M3
34. What is the primary benefit of using Thumb-2 instruction set in ARM Cortex-M processors?
A) Reduced memory footprint and improved code density B) Higher clock speeds C) Enhanced security features D) Increased parallel processing capabilities
View Answer
A) Reduced memory footprint and improved code density
35. What is the purpose of the SCB (System Control Block) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
A) To provide control and configuration for system-level features
36. Which ARM architecture provides hardware support for floating-point operations?
A) ARM7 B) ARM9 C) Cortex-M0 D) Cortex-M4
View Answer
D) Cortex-M4
37. What is the purpose of the MPU (Memory Protection Unit) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
C) To handle memory access permissions
38. Which register is used to configure the MPU region base address in ARM Cortex-M processors?
A) RBAR B) RASR C) RNR D) SHPR
View Answer
A) RBAR
39. Which ARM Cortex-M core introduced the DSP (Digital Signal Processing) extension for improved signal processing capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
40. What is the purpose of the SysTick timer in ARM Cortex-M processors?
A) To provide a real-time clock (RTC) B) To generate periodic interrupts for timekeeping C) To synchronize parallel processing tasks D) To monitor power consumption
View Answer
B) To generate periodic interrupts for timekeeping
41. Which ARM Cortex-M core introduced the TrustZone technology for hardware-based security in microcontrollers?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M23
View Answer
D) Cortex-M23
42. What is the purpose of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
43. Which ARM Cortex-M core introduced the Memory Protection Unit (MPU) for enhanced security and memory protection capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
B) Cortex-M3
44. What is the primary benefit of using Thumb-2 instruction set in ARM Cortex-M processors?
A) Reduced memory footprint and improved code density B) Higher clock speeds C) Enhanced security features D) Increased parallel processing capabilities
View Answer
A) Reduced memory footprint and improved code density
45. What is the purpose of the SCB (System Control Block) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
A) To provide control and configuration for system-level features
46. Which ARM architecture provides hardware support for floating-point operations?
A) ARM7 B) ARM9 C) Cortex-M0 D) Cortex-M4
View Answer
D) Cortex-M4
47. What is the purpose of the ARM Cortex-M System Timer (SysTick) in ARM Cortex-M processors?
A) To provide a real-time clock (RTC) B) To generate periodic interrupts for timekeeping C) To manage system power modes D) To synchronize parallel processing tasks
View Answer
B) To generate periodic interrupts for timekeeping
48. Which ARM Cortex-M core introduced the TrustZone for ARMv8-M technology?
A) Cortex-M0 B) Cortex-M23 C) Cortex-M33 D) Cortex-M7
View Answer
C) Cortex-M33
49. What is the role of the NVIC (Nested Vectored Interrupt Controller) in ARM Cortex-M processors?
A) To handle system-level interrupts B) To manage exceptions and interrupts with configurable priority levels C) To control clock gating and power management D) To provide real-time clock (RTC) functionality
View Answer
B) To manage exceptions and interrupts with configurable priority levels
50. Which ARM Cortex-M core introduced the DSP (Digital Signal Processing) extension for improved signal processing capabilities?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
C) Cortex-M4
51. What is the function of the MPU (Memory Protection Unit) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
C) To handle memory access permissions
52. Which ARM Cortex-M core introduced the Thumb-2 instruction set?
A) Cortex-M0 B) Cortex-M3 C) Cortex-M4 D) Cortex-M7
View Answer
B) Cortex-M3
53. What is the purpose of the SCB (System Control Block) in ARM Cortex-M processors?
A) To provide control and configuration for system-level features B) To manage interrupts and exceptions C) To handle memory access permissions D) To execute cryptographic algorithms
View Answer
A) To provide control and configuration for system-level features
54. Which ARM architecture provides hardware support for floating-point operations?
A) ARM7 B) ARM9 C) Cortex-M0 D) Cortex-M4
View Answer
D) Cortex-M4
55. What is the purpose of the WFI (Wait For Interrupt) instruction in ARM Cortex-M processors?
A) To wait for a specified time delay B) To enter a low-power sleep mode until an interrupt occurs C) To synchronize parallel processing tasks D) To generate clock signals for peripheral devices
View Answer
B) To enter a low-power sleep mode until an interrupt occurs
56. Which register is used to configure the MPU region base address in ARM Cortex-M processors?
A) RBAR B) RASR C) RNR D) SHPR
View Answer
A) RBAR
