PPD411 Practice Question

PPD411 Practice Question

Professional Development

15 Qs

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PPD411 Practice Question

PPD411 Practice Question

Assessment

Quiz

Computers

Professional Development

Practice Problem

Easy

Created by

Nomongi Hlatshwayo

Used 2+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Which of the following characteristics would most likely make a program harder to understand and maintain?

Readability

Simplicity

Complexity

Modularity

Answer explanation

Complexity makes a program harder to understand and maintain because it introduces intricate structures and relationships, making it difficult for developers to follow the logic and make changes without introducing errors.

2.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

A sentinel value in a loop is used primarily to:

Repeat the process forever

Mark the beginning of input

End user input based on a condition

Reset a program

Answer explanation

A sentinel value is a specific input that signals the end of user input in a loop. It allows the program to terminate input collection based on a condition, making 'End user input based on a condition' the correct choice.

3.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

In structured programming, which of the following is considered an advanced concept rather than a basic control structure?

Sequence

Decision

Iteration

Recursion

Answer explanation

Recursion is considered an advanced concept in structured programming, as it involves a function calling itself, which can lead to complex problem-solving techniques. In contrast, sequence, decision, and iteration are basic control structures.

4.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Why is modular programming widely used in software development?

It decreases performance

It eliminates documentation

It breaks the program into manageable sections

It combines all logic into one block

Answer explanation

Modular programming is widely used because it breaks the program into manageable sections, making it easier to develop, test, and maintain. This approach enhances code organization and reusability.

5.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

What role does pseudocode play during the software development process?

It is executed directly by the computer

It outlines the logical steps in plain language

It replaces the need for flowcharts

It is a syntax checker

Answer explanation

Pseudocode serves as a tool to outline the logical steps of an algorithm in plain language, making it easier for developers to understand and implement the code. It does not execute, replace flowcharts, or check syntax.

6.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Which of the following terms is least relevant to relational databases?

Entity

Attribute

Variable

Primary Key

Answer explanation

The term 'Variable' is least relevant to relational databases, which focus on 'Entity', 'Attribute', and 'Primary Key' concepts. Variables are more associated with programming rather than database structure.

7.

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

One main distinction between object-oriented programming (OOP) and procedural programming is:

OOP avoids user-defined functions

OOP emphasizes the use of objects and encapsulation

Procedural programming cannot use loops

Procedural programming always has a graphical interface

Answer explanation

The correct choice highlights that OOP focuses on objects and encapsulation, which are key principles distinguishing it from procedural programming, where functions and procedures are the main focus.

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