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Q:

An algorithm written once which can be used in many places is called

A) Block B) Function
C) Datatype D) None
 
Answer & Explanation Answer: B) Function

Explanation:

Function is an algorithm which can be used any where in the program when required

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Filed Under: Java

Q:

What are the 3main tasks of JVM?

Answer

The JVM performs three main tasks:


• Loads code


• Verifies code


• Executes code

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Subject: Java

Q:

By whom will the unallocated memory that is no longer needed will be cleared in java?

A) Java Virtual Machine B) Garebage collector
C) Both A and B D) None
 
Answer & Explanation Answer: B) Garebage collector

Explanation:

The Java programming language provides a system-level thread to track memory allocation.

Garbage collection has the following characteristics:

• Checks for and frees memory no longer needed

• Is done automatically

• Can vary dramatically across JVM implementations

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Filed Under: Java

Q:

Which command displays the present workig directory in UNIX?

A) $who B) $pwd
C) $who are you D) None
 
Answer & Explanation Answer: B) $pwd

Explanation:

$pwd - present working directory

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Filed Under: Operating Systems

Q:

Which of the following are the debugging windows in .NET?

A) Breakpoints B) Output
C) Immediate D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

All the above listed are debugging windows in .NET

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Filed Under: .NET

Q:

What are type safe function pointers?

A) Delegates B) Break points
C) Both A and B D) None
 
Answer & Explanation Answer: A) Delegates

Explanation:

A delegate declares a ref type that references a named of anonymous method. Delegates are secure and type-safe.

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Filed Under: .NET

Q:

Explain how garbage collection deals with circular referrences?

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:

Which among the following are the components of windows registry?

A) Keys B) SubKeys
C) Values D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

All the above listed are the components of Windows registry

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Filed Under: Operating Systems