Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

The primary purpose of a three-state buffer is usually ____________

A. To provide isolation between the input device and the data bus
B. To provide the sink or source current required by any device connected to its output without loading down the output device
C. Temporary data storage
D. To control data flow
Answer» B. To provide the sink or source current required by any device connected to its output without loading down the output device
Discussion
2.

To operate correctly, starting a ring shift counter requires __________

A. Clearing all the flip-flops
B. Presetting one flip-flop and clearing all others
C. Clearing one flip-flop and presetting all others
D. Presetting all the flip-flops
Answer» C. Clearing one flip-flop and presetting all others
Discussion
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