DBA Interview Questions and Answers

Q:

Chennai express left Hyderabad for Chennai at 14 : 30 hours, travelling at a speed of 60 kmph and Charminar Express left Hyderabad for Chennai on the same day at 16 : 30 hours, travelling at a speed of 80 kmph. How far away from Hyderabad will the two trains meet?

A) 360 kms	B) 480 kms
C) 520 kms	D) 240 kms

Answer & Explanation Answer: B) 480 kms

Explanation:

Now, the distance covered by Chennai express in 2 hrs = 60 x 2 = 120 kms

Let the Charminar Express takes 't' hrs to catch Chennai express

=> 80 x t = 60 x (2 + t)

=> 80 t = 120 + 60t

=> t = 6 hrs

Therefore, the distance away from Hyderabad the two trains meet = 80 x 6 = 480 kms.

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Filed Under: Time and Distance
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

10 4430

Q:

In which of the following state Bandipur National Park is located?

A) Karnataka	B) Andhra Pradesh
C) Himachal Pradesh	D) Madhya Pradesh

Answer & Explanation Answer: A) Karnataka

Explanation:

Bandipur National Park is located in the state of Karnataka.

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Filed Under: Indian Geography
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank PO , Database Administration , IT Trainer

7 4429

Q:

Breaking of relationships is allowed once referential integrity on a database is enforced

A) TRUE

B) FALSE

Answer & Explanation Answer: B) FALSE

Explanation:

Breaking of relationships is prevented once referential integrity on a database is enforced

Workspace

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Subject: Oracle Certification
Job Role: Database Administration

0 4417

Q:

IF YOU HAVE ME, YOU WANT TO SHARE ME. IF YOU SHARE ME, YOU HAVEN'T GOT ME. WHAT AM I?

Answer

A Secret is what you want to share if you have with you. And if you share that secret with anyone, then secret will not be with you only.

Workspace

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Subject: Word Puzzles Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Database Administration , Bank PO , Analyst

24 4406

Q:

Which layer 4 protocol is used for a Telnet connection?

A) UDP	B) IP
C) TCP	D) TCP/IP

Answer & Explanation Answer: C) TCP

Explanation:

Telnet uses TCP at layer 4. It uses IP at layer 3. We know that Telnet uses TCP/IP protocol, but in the question, it is asked specifically at layer 4 what is used in Telnet. So it is TCP at layer4 and IP at layer 3.

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Filed Under: Networking
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank PO , Database Administration , IT Trainer , Network Engineer

0 4376

Q:

Shamma lends Rs.40,000 to two of her friends. She gives Rs.24,000 to the first at 8% p.a. simple interest. Shamma wants to make a profit of 10% on the whole. The simple interest rate at which she should lend the remaining sum of money to the second friend is:

A) 13%	B) 8.5%
C) 9.5%	D) 11.25%

Answer & Explanation Answer: A) 13%

Explanation:

The ratio of money she lended is

24000 : 16000 = 3 : 2

Let the rate of interest be R%

8% R%

10

3 : 2

R = 13%.

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration

10 4331

Q:

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

Because a table can have only one primary key

Workspace

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Subject: Oracle Certification
Job Role: Database Administration

1 4319

Q:

Which SQL keyword is used to sort the result-set?

A) ORDER	B) ORDER BY
C) SORT BY	D) SORT

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