CS151 EXAM QUESTIONS AND ANSWERS. VERIFIED 2025/2026.

CS151 EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.




Which one is the correct order of "Java access modifiers" from the "least restriction to the
most" - ANS public, protected, default, private



Pick all true statements in OOP and the programming language supporting OOP, like Java: -
ANS We model the real universe's entities using objects



We model the behavior of the real universe's entities using java methods



Pick all true statements about "problem statement" in SDLC - ANS usually written by the
client



It describes what the problem is



Theoretically, it is a clear description of the problem



Artifact - definition - ANS An artifact is the output of a phase



3 Parts of a Problem Statement - ANS 1. Problem - define the problem and explain the
current issue

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, 2. Vision - What is the end goal, how will it look like in the future when implemented



3. Domain - target audience, who is affected by this problem



In Java, if we import a class but don't use it, it is NOT a "dependency" - ANS False



"Dependency" is a "symmetric" relationship - ANS False



Pick all true statements about "class relationship" - ANS ClassA is dependent on ClassB if
ClassA "uses" ClassB



"Aggregation" is a special case of "dependency"



Pick all true statements about "SDLC in theory" - ANS Choosing the "algorithms" is the
"implementation phase" concern



ClassA "aggregates" ClassB if.. - ANS ClassA contains ClassB in its "instance variables"



Pick all true statements about "technical-spec" - ANS It contains UML diagrams( classes +
relationship)



It's written by software architect



7 Phases of SDLC - ANS 1. Planning

2. Analysis


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