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Professional Knowledge Set 1 , Total Questions: 7,

1. Question:

In computer science ____________ is a set of properties that guarantee that database transactions are processed concurrently.

RAID (redundant array of independent disks)

Transactions States

ACID (Atomicity, Consistency, Isolation, Durability)

None of The Above

2. Question:

In RDBMS a Tuple word repersents_________?

Row

Column

Table

None of The Above

3. Question:

In TCP and UDP which protocol that gives 100% guarantee to delevery of data?

TCP

UDP

TCP and UDP both

None of The Above

4. Question:

A data warehouse is which of the following?

Where live data storing

not meaningful data

Can be updated by end users.

Organized around important subject areas.

5. Question:

What is role of ETL in database warehouse?

To extract from source and load into database warehouse.

To extract the data from sources transform and load into database warehouse.

To extract from source and load into database warehouse.

None of the above

6. Question:

Windows IIS comes with windows adition ______ ?

2000

2003

2005

2010

All the above

7. Question:

Let α1 = 1.333, β1 = 1.334

What are the absolute errors of βi as an approximation to αi ?

0.001

0.002

-0.001

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