Chapter Exam

Chapter 7: Composition and Decomposition — Online MCQ Test

Q: Which of the following is the process of breaking a complex problem into smaller, manageable sub-problems?

Answer: B. Decomposition — Decomposition is the design technique of splitting a large problem into smaller parts that are easier to solve.

Q: When designing a large software system, why is decomposition preferred over writing a single long function?

Answer: B. It makes testing and maintenance more efficient — Decomposition allows developers to isolate components for testing and updating without affecting the entire system.

Q: In a layered architecture, a high-level module depends on low-level modules. This is an application of:

Answer: A. Composition — Composition allows complex behaviors to be built by layering modular components that handle specific logic.

COMPUTER SCIENCE · CLASS 11th · Tamil Nadu State Board

Practice Chapter 7: Composition and Decomposition with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th COMPUTER SCIENCE. This chapter covers: This chapter covers structural algorithm design including sequential conditional and iterative statements. Students learn to decompose complex problems into smaller manageable sub-.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 7: Composition and Decomposition — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th COMPUTER SCIENCE — Chapter 7: Composition and Decomposition, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is the process of breaking a complex problem into smaller, manageable sub-problems?

A. Composition
B. Decomposition ✓
C. Iteration
D. Abstraction

Answer: B. Decomposition
Decomposition is the design technique of splitting a large problem into smaller parts that are easier to solve.

What is the primary purpose of algorithmic composition?

A. To increase the number of bugs
B. To combine smaller components to build a larger system ✓
C. To delete variables from memory
D. To avoid using functions

Answer: B. To combine smaller components to build a larger system
Composition involves assembling smaller, pre-built components or modules to form a complex program solution.

When designing a large software system, why is decomposition preferred over writing a single long function?

A. It makes the code harder to understand
B. It makes testing and maintenance more efficient ✓
C. It reduces the computer's processing speed
D. It prevents the use of variables

Answer: B. It makes testing and maintenance more efficient
Decomposition allows developers to isolate components for testing and updating without affecting the entire system.

In a layered architecture, a high-level module depends on low-level modules. This is an application of:

A. Composition ✓
B. Hardware limitation
C. Sequential processing only
D. Single-block programming

Answer: A. Composition
Composition allows complex behaviors to be built by layering modular components that handle specific logic.

In the design of a sorting algorithm, breaking it into 'compare', 'swap', and 'iterate' modules represents:

A. Algorithmic decomposition where the sub-problems mirror logic operations ✓
B. A failure in algorithm design
C. Composition without logic
D. A hardware-specific solution

Answer: A. Algorithmic decomposition where the sub-problems mirror logic operations
This is a classic example of logical decomposition, identifying distinct steps of an algorithm to handle as separate modules.