Engineering Questions with Answers - Multiple Choice Questions
Software Engineering MCQ – Fault Tolerance
1 - Question
What type of fault remains in the system for some period and then disappears?
a) Permanent
b) Transient
c) Intermittent
d) All of the mentioned
View Answer
Answer: b
Explanation: For example many faults in communication systems are transient in nature.
2 - Question
Which of the following approaches are used to achieve reliable systems?
a) Fault prevention
b) Fault removal
c) Fault tolerance
d) All of the mentioned
View Answer
Answer: d
Explanation: All the options lead to formation of a reliable system.
3 - Question
A system maintaining its integrity while accepting a temporary halt in its operation is said to be in a state of
a) Full Fault Tolerance
b) Graceful Degradation
c) Fail Soft
d) Fail Safe
View Answer
Answer: d
Explanation: None.
4 - Question
Which of the following Error Detection checks is not a part of Application detection?
a) Hardware checks
b) Timing checks
c) Reversal checks
d) Coding checks
View Answer
Answer: a
Explanation: Hardware is a part of environment detection check.
5 - Question
Exception handling is a type of
a) forward error recovery mechanism
b) backward error recovery mechanism
c) All of the mentioned
d) None of the mentioned
View Answer
Answer: a
Explanation: Exception handling is a forward error recovery mechanism, as there is no roll back to a previous state; instead control is passed to the handler so that recovery procedures can be initiated.
6 - Question
Non-occurrence of improper alteration of information is known as
a) Available Dependability
b) Confidential Dependability
c) Maintainable Dependability
d) Integral Dependability
View Answer
Answer: d
Explanation: Integrity is to keep the original content safe from alteration.
7 - Question
In N-version programming which is the independent generation of N, the value of N is
a) greater than 1
b) less than 1
c) greater than 2
d) less than 2
View Answer
Answer: c
Explanation: N-version programming (NVP), also known as multiversion programming or multiple-version dissimilar software, is a method or process in software engineering where multiple functionally equivalent programs are independently generated from the same initial specifications.
8 - Question
In Log-based fault tolerance, logs of undetermined events are saved and replayed on failure.
a) True
b) False
View Answer
Answer: a
Explanation: None.
9 - Question
All fault-tolerant techniques rely on
a) Integrity
b) Dependability
c) Redundancy
d) None of the mentioned
View Answer
Answer: c
Explanation: All fault-tolerant techniques rely on extra elements introduced into the system to detect & recover from faults.
10 - Question
It is imperative for a communicating processes to reach consistent recovery points to avoid the _________ effect, with backward error recovery mechanism.
a) Static
b) Dynamic
c) Domino
d) Whirlpool
View Answer
Answer: c
Explanation: None.