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Placement Papers

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312 Q 10 Topics Take Test
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Difficulty: All Easy Medium Hard 91–100 of 312
Topics in Placement Papers
Q.91 Medium IBM Questions IBM
What is the purpose of an index in a database?
A To store backup data
B To speed up query retrieval
C To encrypt sensitive data
D To remove duplicate records
Correct Answer:  B. To speed up query retrieval
EXPLANATION

An index is a database structure that improves the speed of data retrieval by creating a quick lookup mechanism

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Q.92 Medium IBM Questions IBM
In Java, what does 'final' keyword do when applied to a variable?
A It makes the variable private
B It prevents the variable from being modified
C It makes the variable static
D It initializes the variable to zero
Correct Answer:  B. It prevents the variable from being modified
EXPLANATION

'final' keyword makes a variable immutable - once assigned, it cannot be changed

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Q.93 Medium IBM Questions IBM
Choose the antonym of 'VERBOSE':
A Talkative
B Quiet
C Concise
D Silent
Correct Answer:  C. Concise
EXPLANATION

'Verbose' means using or containing more words than necessary. 'Concise' is the opposite

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Q.94 Medium IBM Questions IBM
Find the synonym of 'EPHEMERAL':
A Permanent
B Transient
C Durable
D Eternal
Correct Answer:  B. Transient
EXPLANATION

'Ephemeral' means lasting for a very short time. 'Transient' is the closest synonym

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Q.95 Medium IBM Questions IBM
Which sentence is grammatically correct?
A Each of the students have completed their assignments.
B Each of the students has completed their assignment.
C Each of the students have completed his or her assignments.
D All of the students has completed their assignments.
Correct Answer:  B. Each of the students has completed their assignment.
EXPLANATION

'Each' is singular, so 'has' is correct. 'Their assignment' (singular) matches with 'each'

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Q.96 Medium IBM Questions IBM
Select the word that best completes: 'Plagiarism is to writing as _____ is to music.'
A Harmony
B Plagiarism
C Melody
D Composition
Correct Answer:  B. Plagiarism
EXPLANATION

Plagiarism is unethical copying in writing. It maintains the same meaning when applied to music

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Q.97 Medium IBM Questions IBM
Statements: Some cats are dogs. All dogs are animals. Conclusion: Some cats are animals. Is this conclusion valid?
A Yes, definitely
B No, definitely not
C Cannot be determined
D Only if all cats are animals
Correct Answer:  A. Yes, definitely
EXPLANATION

If some cats are dogs, and all dogs are animals, then those cats that are dogs must be animals. Therefore, some cats are animals is valid

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Q.98 Medium IBM Questions IBM
What should come next in the series? A, B, D, G, K, ?
A M
B N
C O
D P
Correct Answer:  D. P
EXPLANATION

Pattern: A(0), B(+1)=1, D(+2)=3, G(+3)=6, K(+4)=10, P(+5)=15. Each gap increases by 1

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Q.99 Medium IBM Questions IBM
If you rearrange the letters of 'STOP', you can make another word. Which word cannot be made?
A POTS
B TOPS
C POST
D SPOT
Correct Answer:  C. POST
EXPLANATION

POST requires two different letters not in STOP (needs T, O, P, S but POST needs different arrangement). All others are valid anagrams

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Q.100 Medium IBM Questions IBM
MORNING is to NIGHT as SPRING is to ?
A AUTUMN
B FALL
C WINTER
D SUMMER
Correct Answer:  C. WINTER
EXPLANATION

Morning and Night are opposites. Spring and Winter are opposite seasons

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