Technology Questions

Q:

What are the differences between static ip addressing and dynamic ip addressing?

Answer

With static IP addressing, a computer (or other device) is configured to always use the same IP address. With dynamic addressing, the IP address can change periodically and is managed by a centralized network service

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Q:

Which is a reserved word in the java programming language?

A) Variable B) Identifier
C) Keyword D) Main
 
Answer & Explanation Answer: C) Keyword

Explanation:

Reserved words are words that cannot be used as object or variable names in a Java program because they're already used by the syntax of the Java programming language.

Java reserved words are keywords that are reserved by Java functions or other uses that cannot be used as identifiers (e.g., variable names, function names, class names).

If a reserved word was used as a variable you would get an error or unexpected result.

 

Examples : Int, Long, Abstract, Class, Break, Catch, Case, Public, Static, Void,...

 

 

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Q:

Define Trigger

Answer

Trigger allows us to execute a batch of SQL code when an insert, update or delete command is executed against a specific table.


Triggers are special types of stored procedures that are defined to execute automatically in place of or after data modifications. They can be executed automatically on the insert, delete and update operation.

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Subject: SQL

0 2694
Q:

What are fact tables and dimension tables?

Answer

Business facts or measures and foreign keys are persisted in fact tables which are referred as candidate keys in dimension tables. Additive values are usually provided by the fact tables which acts as independent variables by which dimensional attributes are analyzed.


Attributes that are used to constrain and group data for performing data warehousing queries are persisted in the dimension tables.


 

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Q:

Which interface implements the standard query operators in LINQ?

Answer

The standard query operators implement the IEnumerable<T> or the IQueryable<T> interface in C# and the IEnumerable(Of T) or the IQueryable(Of T) interface in Visual Basic.

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Subject: .NET

0 2691
Q:

What type of Joins have you used?

Answer

The knowledge of Joins is a MUST for every interviewee. Most SQL programmers have used inner join and  outer join[left/right]; but the catch point here is to also mention cross join and self-join.


 

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Subject: SQL

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Q:

What is CIDR?

Answer

Classless Inter-Domain Routing 

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Q:

What is a DB2 plan?

Answer

An application plan or package is generated by the bind to define an access path. 

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