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Q:

David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?

A) 75 B) 68
C) 65 D) 60
 
Answer & Explanation Answer: A) 75

Explanation:

Average =   (76 + 65 + 82 + 67 + 85 )/ 5 = 375/5   =  75.

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Filed Under: Average

Q:

If you are using C language to implement the heterogeneous linked list, what pointer type will you use?

Answer

The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type.

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Subject: Java

Q:

Explain how garbage collection deals with circular references?

Answer

The .Net runtime knows about all the references between the objects. It can identify all the circular references that are reachable from the root and hence finalize them to free them all at once if and when needed.

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Subject: .NET

Q:

What value does read() return when it has reached the end of a file?

A) 1 B) -1
C) 0 D) None
 
Answer & Explanation Answer: B) -1

Explanation:

It returns -1

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Filed Under: Programming

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

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

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

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