UGC NET CS Dec 2015

Loop unrolling is a code optimization technique that

1. A.Avoids tests at every iteration of the loop✓
2. D.Reorders operations to allow multiple computations in parallel
3. C.Exchanges inner loops with outer loops
4. B.Improves performance by decreasing instructions in a basic block

Correct answer: A

Which system-provided function is called when no handler deals with a C++ exception?

1. D.kill()
2. C.abort()
3. B.unexpected()
4. A.terminate()✓

Correct answer: A

System calls are usually invoked by using:

1. D.Polling
2. C.A software interrupt✓
3. B.An indirect jump
4. A.A privileged instruction

Correct answer: C

Which service is NOT provided by a wireless access point in 802.11 WLAN?

1. C.Error correction✓
2. D.Integration
3. B.Disassociation
4. A.Association

Correct answer: C

Comparing recursive and non-recursive implementations of algorithms:

1. D.Space complexity is better in recursive but time is better in non-recursive
2. C.Time complexity is better in recursive but space is better in non-recursive
3. B.Both time and space complexities are better in non-recursive implementation✓
4. A.Both time and space complexities are better in recursive implementation

Correct answer: B

The best description of an entity type is:

1. D.A template for a group with the same characteristics✓
2. C.A thing we wish to collect data about with zero or more real-world instances
3. B.Value assigned to particular attribute
4. A.Specific concrete object with processes

Correct answer: D

Data that improves database performance and accessibility is called:

1. D.Data Dictionary
2. C.Application Metadata
3. B.User Data
4. A.Indexes✓

Correct answer: A