FPGA MCQs

Practice FPGA MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Digital ElectronicsFPGA

A 4-input lookup table (LUT) in an FPGA can directly represent any Boolean function of up to four variables because it stores how many truth-table output bits?

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Correct Answer: C. 16

Explanation: Four binary inputs have 2^4=16 possible combinations. A 4-input LUT stores one output value for each combination, so 16 configuration bits represent an arbitrary four-variable Boolean function.

Reference: Standard digital electronics: FPGA LUT

Question 2

Digital ElectronicsFPGA

In an FPGA, configurable logic blocks are interconnected primarily through?

AProgrammable routing resources
BFixed mechanical switches only
CAnalog transformers
DDRAM refresh lines only

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Correct Answer: A. Programmable routing resources

Explanation: FPGAs combine configurable logic resources with programmable interconnect, allowing the configured circuit's signal paths to be established after manufacture.

Reference: Standard digital electronics: FPGA architecture