Digital Electronic Circuits MCQ Questions Answers Electronics Engineering

Digital Electronic Circuits – Electronics & Communication Engineering MCQ Questions Answers ECE


1) The principle of locality of reference justifies the use of

a) interrupts

b) DMA

c) virtual memory

d) cache memory

View Answer
Option – d)

2) Which one of the following is loaded in the main memory by the bootstrap loader ?

a) system data

b) User program

c) BIOS

d) Parts of DOS

View Answer
Option – c)

3) The software that transfers the object program from secondary memory to the main memory is called

a) assembler

b) loader

c) linker

d) task builder

View Answer
Option – b)

4) If a RAM has 34bits in its MAR and 16 bits in its MDR, then its capacity will be

a) 32 GB

b) 16 GB

c) 32 MB

d) 16 MB

View Answer
Option – a)

5) Which one of the following is not a linear data structure ?

a) Array

b) Linked list

c) Stack

d) Tree

View Answer
Option – d)

6) The contents of accumulator in an 8085 microprocessor are altered after the execution of the instruction ?

a) CMP C

b) CPI 3A

c) ANI SC

d) ORA A

View Answer
Option – c)

7) The first machine cycle of an instruction is always

a) A memory read cycle

b) A fetch cycle

c) An I/O read cycle

d) A memory write cycle

View Answer
Option – b)

8) What is the depth of a complete binary tree with ‘n’ nodes ?

a) log2(n + 1) – 1

b) log2 (n – 1) + 1

c) log2 (n) + 1

d) log2(n) – 1

View Answer
Option – d)

9) Which block replacement algorithm is not generally used cache operation ?

a) LIFO

b) FIFO

C) LRU

d) Random

View Answer
Option – b)

10) Which one of the following is not associated with a logic analyzer ?

a) Dalayed state

b) Delayed sweep

c) Disassemble

d) Pre-triggering

View Answer
Option – b)
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