Technical Questions

Q:

What is Tri-state logic?

Answer

Three Logic Levels are used and they are High, Low, HIgh impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri-state logic has a third line called enable line.

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Subject: Hardware

0 2387
Q:

In 8085 which is called as High order / Low order Rigister?

Answer

Flag is called as Low order rigister & Accumulator is called as High order Rigister.

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Subject: Hardware

1 2063
Q:

Why crystal is a preferred clock source?

Answer

Because of high stability, large Q (Quality Factor) & the frequency that doesn't drift with aging. Crystal is used as a clock source most of the times.

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Subject: Hardware

0 4612
Q:

What are the flags in 8086?

Answer

In 8086 Carry flag, Parity flag, Ausiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sing flag.

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Subject: Hardware

0 1970
Q:

What is a Microprocessor?

Answer

Microprocessor is a program-controlled device, which fetches the instructions from memory. decodes and executes the instructions. Most Micro Processors are single-chip devices.

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Subject: Hardware

1 3286
Q:

Convert the expression ((A + B) * C – (D – E) ^ (F + G)) to equivalent Prefix Notation

Answer

Prefix Notation:


^ - * +ABC - DE + FG

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Subject: Programming

1 2100
Q:

Methods declared as what cannot be overriden?

A) Transcient B) Abstract
C) Final D) Super
 
Answer & Explanation Answer: C) Final

Explanation:

Once a method declared as Final cannot be  overriden

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Filed Under: Programming

0 3277
Q:

Which of the following is true?

A) It is appropriate to use assertions to validate arguments to methods marked public B) It is appropriate to catch and handle assertion errors
C) It is NOT appropriate to use assertions to validate command-line arguments D) None
 
Answer & Explanation Answer: C) It is NOT appropriate to use assertions to validate command-line arguments

Explanation:

A is incorrect. It is acceptable to use assertions to test the arguments of private methods.

 

B is incorrect. While assertion errors can be caught, Sun discourages you from doing so.

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Filed Under: Programming

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