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Q:

What is RUNSTATS?

Answer

A DB2 utility used to collect statistics about the data values  in tables which can be used   by the optimizer to decide the access path. It also collects statistics used for space   management. These statistics are stored in DB2 catalog tables.

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Subject: Mainframe Interview

0 3644
Q:

What is Stop-and-Wait Protocol?

Answer

In Stop and wait protocol, sender sends one frame, waits until it receives confirmation from the receiver (okay to go ahead), and then sends the next frame.


 

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Subject: Network Administration

0 3625
Q:

What are three ways to reduce page load time?

Answer

There are many answers here: Reduce image sizes, remove unnecessary widgets, HTTP compression, put CSS at the top and script references at the bottom or in external files, reduce lookups, minimize redirects, caching, etc.

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Subject: Application Development

4 3622
Q:

Can a main() method be declared final?

Answer Yes. Any inheriting class will not be able to have it's own default main() method.
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Subject: Java

0 3577
Q:

With a heredoc syntax, do I get variable substitution inside the heredoc contents?

Answer Yes
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Subject: PHP

1 3576
Q:

What is a template?

A) A template is a formula for creating a generic class B) A template is used to manipulate the class
C) A template is used for creating the attributes D) none of the mentioned
 
Answer & Explanation Answer: A) A template is a formula for creating a generic class

Explanation:
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Filed Under: C++

1 3567
Q:

Where does the exception are handled?

A) inside the program B) outside the regular code
C) both a & b D) none of these
 
Answer & Explanation Answer: B) outside the regular code

Explanation:
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Filed Under: C++

1 3564
Q:

What is REORG? When it is used?

Answer

REORG reorganizes data on physical storage to reclutser rows, positioning overflowed rows in their proper sequence, to reclaim space, to restore free space. It is used after heavy updates, inserts and delete activity and after segments of a segmented tablespace have become fragmented.

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Subject: Mainframe Interview

0 3560