Field Programmable Gate Arrays (FPGAs) MCQs

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1. Which of the following is a characteristic of FPGA architecture?
(A) It has a fixed and unchangeable logic structure
(B) It relies solely on software for configuration
(C) It contains configurable logic blocks connected by a programmable interconnect
(D) It cannot be reprogrammed once configured

2. What is the advantage of using partial reconfiguration in FPGAs?
(A) It allows for changing the FPGA vendor
(B) It enables changing the logic of a portion of the FPGA without affecting the entire design
(C) It increases power consumption
(D) It decreases the flexibility of the FPGA

3. Which programming language is commonly used to describe the behavior of logic circuits in FPGAs?
(A) Java
(B) Python
(C) VHDL or Verilog
(D) C++

4. What is the function of the Configurable Logic Block (CLB) in an FPGA?
(A) To manage clock signals
(B) To handle input/output operations
(C) To perform logic functions based on the programming
(D) To store configuration data

5. What is the main disadvantage of using FPGAs compared to ASICs?
(A) Lower performance
(B) Higher cost
(C) Longer development time
(D) Higher power consumption

6. Which of the following is a benefit of using FPGA-based systems in prototyping?
(A) Lower flexibility compared to ASIC-based prototypes
(B) Reduced risk of errors in hardware design
(C) Limited debugging capabilities
(D) Inability to simulate complex logic circuits

7. What is the purpose of the routing resources in an FPGA?
(A) To store configuration data
(B) To perform arithmetic operations
(C) To connect the configurable logic blocks and I/O blocks
(D) To handle input/output operations

8. Which of the following is an advantage of using SRAM-based FPGAs?
(A) Lower power consumption
(B) Non-volatile configuration storage
(C) High resistance to configuration errors
(D) Frequent reprogramming capability

9. What is the purpose of the interconnect resources in an FPGA?
(A) To store configuration data
(B) To perform logic functions
(C) To connect the configurable logic blocks
(D) To manage power consumption

10. Which factor influences the logic capacity of an FPGA?
(A) Configuration speed
(B) Operating temperature
(C) Number of configurable logic blocks
(D) Availability of routing resources

11. What is the primary advantage of using FPGA-based systems for rapid prototyping?
(A) Reduced design flexibility
(B) High-cost savings
(C) Faster time to market
(D) Limited hardware compatibility

12. Which of the following is a common challenge in FPGA design?
(A) Limited reconfigurability
(B) Inflexible logic structures
(C) High power consumption
(D) Timing constraints and signal integrity

13. What is the primary advantage of using FPGAs in aerospace applications?
(A) Lower development cost
(B) Reduced design complexity
(C) High reliability and radiation tolerance
(D) Limited processing capabilities

14. What does FPGA stand for?
(A) Fully Programmable Gate Array
(B) Field Programmable Gate Array
(C) Fixed Programmable Gate Array
(D) Fast Programmable Gate Array

15. What is the primary advantage of FPGAs over ASICs (Application-Specific Integrated Circuits)?
(A) Higher performance
(B) Lower power consumption
(C) Lower cost
(D) Flexibility and reconfigurability

16. Which of the following is true about FPGAs?
(A) They are fixed-function devices
(B) They cannot be reprogrammed
(C) They allow for on-the-fly configuration changes
(D) They have a predefined logic structure

17. How are FPGAs typically programmed?
(A) Using assembly language
(B) Using C programming language
(C) Using hardware description languages like VHDL or Verilog
(D) Using machine code

18. Which of the following is not a component of an FPGA?
(A) Configurable Logic Blocks (CLBs)
(B) Look-Up Tables (LUTs)
(C) Hardwired connections
(D) I/O blocks

19. What is the function of Look-Up Tables (LUTs) in an FPGA?
(A) To store configuration data
(B) To perform logic functions
(C) To handle input/output operations
(D) To manage power distribution

20. Which of the following statements is true about FPGAs?
(A) They are typically used in applications with fixed and static requirements
(B) They offer lower performance compared to ASICs
(C) They are reprogrammable and offer flexibility in logic design
(D) They are manufactured as ready-to-use integrated circuits

21. What is the primary benefit of using an FPGA for prototyping a digital design?
(A) Lower cost compared to ASIC prototyping
(B) Faster development time
(C) Simpler design process
(D) Ability to reconfigure and modify the design easily

22. Which type of memory is typically used to store the configuration data of an FPGA?
(A) Flash memory
(B) SRAM
(C) DRAM
(D) ROM

23. What is the purpose of I/O blocks in an FPGA?
(A) To perform arithmetic operations
(B) To store configuration data
(C) To manage power distribution
(D) To handle input and output operations

24. Which of the following is a common application of FPGAs?
(A) High-speed data processing
(B) Long-term data storage
(C) Audio playback
(D) Optical disc reading

25. What is the typical power consumption of FPGAs compared to ASICs?
(A) Higher
(B) Lower
(C) About the same
(D) Variable, depending on the design

26. Which of the following is an advantage of using FPGA-based systems in prototyping and testing?
(A) Lower cost
(B) Slower development time
(C) Ability to emulate hardware accurately
(D) Fixed functionality

27. What is the main difference between SRAM-based FPGAs and flash-based FPGAs?
(A) SRAM-based FPGAs are non-volatile, while flash-based FPGAs are volatile
(B) SRAM-based FPGAs can be reprogrammed frequently, while flash-based FPGAs have limited reprogramming cycles
(C) SRAM-based FPGAs are slower than flash-based FPGAs
(D) SRAM-based FPGAs are smaller in size than flash-based FPGAs

28. What is the purpose of Clock Management Tiles (CMTs) in an FPGA?
(A) To manage power consumption
(B) To handle input/output operations
(C) To distribute clock signals and manage timing constraints
(D) To perform logic functions

29. Which of the following statements is true about FPGA-based systems?
(A) They are not suitable for applications requiring high-performance processing
(B) They are typically used for fixed and static designs
(C) They can be dynamically reconfigured during runtime
(D) They offer lower flexibility compared to ASIC-based systems

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Field Programmable Gate Arrays (FPGAs) MCQs
By: Prof. Dr. Fazal Rehman | Last updated: June 19, 2025

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