Chapter Exam

Chapter 6: Specification and Abstraction — Online MCQ Test

Q: An algorithm specification is defined by which two components?

Answer: B. Pre-condition and Post-condition — Specification involves defining the state of the system before (pre-condition) and after (post-condition) the algorithm executes.

Q: If the pre-condition for a division algorithm is 'denominator is not zero', what type of check is this?

Answer: C. Input constraint — Pre-conditions act as constraints on the input to ensure the algorithm can function correctly.

Q: Which scenario best demonstrates the need for formal specification?

Answer: B. Developing a complex banking transaction system — Formal specification is essential in critical systems where errors can lead to serious consequences, such as banking.

COMPUTER SCIENCE · CLASS 11th · Tamil Nadu State Board

Practice Chapter 6: Specification and Abstraction with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th COMPUTER SCIENCE. This chapter covers: Introducing algorithmic problem-solving principles this chapter details algorithm specification state representation and abstraction techniques. Students model real-world problems.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 6: Specification and Abstraction — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th COMPUTER SCIENCE — Chapter 6: Specification and Abstraction, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the primary purpose of abstraction in computer science?

A. To hide complex details and show only essential features ✓
B. To increase the length of the code
C. To make the algorithm execute faster
D. To eliminate the need for variables

Answer: A. To hide complex details and show only essential features
Abstraction allows users to interact with a system through a simple interface while hiding the complex implementation details.

An algorithm specification is defined by which two components?

A. Input and Output
B. Pre-condition and Post-condition ✓
C. Compiler and Interpreter
D. Variables and Constants

Answer: B. Pre-condition and Post-condition
Specification involves defining the state of the system before (pre-condition) and after (post-condition) the algorithm executes.

If the pre-condition for a division algorithm is 'denominator is not zero', what type of check is this?

A. Output constraint
B. Implementation detail
C. Input constraint ✓
D. Loop invariant

Answer: C. Input constraint
Pre-conditions act as constraints on the input to ensure the algorithm can function correctly.

Which scenario best demonstrates the need for formal specification?

A. Writing a simple print statement
B. Developing a complex banking transaction system ✓
C. Changing the font of a text file
D. Deleting a temporary file

Answer: B. Developing a complex banking transaction system
Formal specification is essential in critical systems where errors can lead to serious consequences, such as banking.

In a formal proof of an algorithm, what is the role of the pre-condition?

A. It acts as the starting point (base case) for the proof ✓
B. It is irrelevant to the proof
C. It forces the loop to terminate
D. It determines the complexity class

Answer: A. It acts as the starting point (base case) for the proof
The proof assumes the pre-condition is true at the start, ensuring that the algorithm starts from a valid known state.