B.S.W.E. Bachelor of Software Engineering B.S.W.E. Bachelor of Software Engineering MCQ 3

Question 1

Which design pattern defines a one-to-many dependency so that when one object changes state, all its dependents are notified automatically?

Accepted Answer

Observer pattern

Answer

The Observer pattern establishes a publisher-subscriber relationship where dependents (observers) are automatically notified when the subject's state changes.

Question 2

In Big-O notation, which time complexity describes an algorithm whose running time doubles with each additional element in the input?

Accepted Answer

O(2ⁿ)

Answer

O(2ⁿ) is exponential complexity, meaning each additional input element doubles the number of operations, as seen in naive recursive Fibonacci.

Question 3

Which SQL command is used to remove all rows from a table while keeping the table structure intact?

Accepted Answer

TRUNCATE

Answer

TRUNCATE removes all rows from a table quickly without logging individual row deletions, but preserves the table schema.

Question 4

In Agile development, what is a 'sprint retrospective'?

Accepted Answer

A team reflection on what worked and what to improve after a sprint

Answer

A sprint retrospective is a ceremony held after each sprint where the team discusses what went well, what did not, and how to improve the next sprint.

Question 5

Which CPU scheduling algorithm can lead to starvation if high-priority processes continuously arrive?

Accepted Answer

Priority Scheduling

Answer

Priority Scheduling may starve low-priority processes indefinitely if higher-priority processes keep arriving before they get CPU time.

B.S.W.E. Bachelor of Software Engineering Practice Test

B.S.W.E. Bachelor of Software Engineering Practice Test

B.S.W.E. Bachelor of Software Engineering B.S.W.E. Bachelor of Software Engineering MCQ 3