26.

Which was an early mainframe computer?
A. ENIAC B. UNIC
C. BRAINIA D. FUNTRIA
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
27.

Experts say the healthiest way to view a computer monitor is by...
A. Placing it 18 to 30 inches away from your eyes B. Viewing from a darkened room
C. Adjusting the screen for maximum contrast D. Using special glasses that filter out UV rays
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
28.

Name the terminals of a BJT.
A. Drain, Gate, Source B. Positive, Negative, Neutral
C. Anode, Cathode, Triode D. Emitter, Base, Collector
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.
29.

What do you call a computer on a network that requests files from another computer?
A. A client B. A host
C. A router D. A web server
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
30.

In which decade were the first successful diode and triode vacuum tubes invented?
A. 1800s B. 1880s
C. 1890s D. 1900s
Answer and Explanation
Answer:D
Explanation: In 1904, John Ambrose Fleming invented the first practical electron tube called the 'Fleming Valve', which is a diode rectifier. In 1906, Lee de Forest invented the audion later called the triode, which provided signal amplification.