IB CS 4.1 Quiz

What is the purpose of writing an algorithm in pseudocode or flowchart?

• To slow down the programming process

• To confuse the programmer

• To make the algorithm more complex

• To solve a problem reliably

When is decision-making required in a specified situation?

• When the computer is turned off

• When the problem is already solved

• When the algorithm needs to make a choice

• When the programmer is feeling indecisive

What is the need for pre-conditions when executing an algorithm?

• To complicate the algorithm

• To confuse the programmer

• To slow down the execution process

• To ensure that the algorithm runs smoothly

What is the purpose of identifying the parts of a solution that could be implemented concurrently?

• To slow down the execution process

• To confuse the programmer

• To complicate the algorithm

• To save time and resources

Why is abstraction required in the derivation of computational solutions for a specified situation?

• To make the algorithm more complex

• To confuse the programmer

• To ignore important details

• To manage the complexity of computer systems

What does it mean to construct an abstraction from a specified situation?

• To represent all the details of the situation

• To simplify reality to essential characteristics

• To ignore the situation completely

• To confuse the programmer

What is the difference between a real-world entity and its abstraction?

• The abstraction is more complex than the entity

• The abstraction represents all the details of the entity

• The abstraction confuses the programmer

• The abstraction simplifies the entity to essential characteristics

What is an example of a pre-condition when executing an algorithm?

• The algorithm must be executed at a specific time of day

• The algorithm must have a specific input condition

• The algorithm must be executed on a specific computer

• The algorithm must be written in a specific programming language

When is concurrent processing used to solve a problem?

• When it is necessary to slow down the execution process

• When it is not possible to use multiple devices simultaneously

• When it is possible to save time and resources

• When it is necessary to complicate the algorithm

Answer explanation

Concurrent processing is used to save time and resources by executing multiple tasks simultaneously.

What is the significance of using sub-procedures in problem-solving?

• To slow down the execution process

• To execute pre-written commands

• To complicate the algorithm

• To streamline the code execution