C191 Operating Systems for Programmers Practice Questions - Set 5 - Part 1

Test your knowledge of data-driven decision making concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

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Question 1: What is the primary purpose of an operating system?

A) To run applications

B) To manage hardware resources

C) To provide internet access

D) To design user interfaces

Question 2: Which of the following is an example of an embedded operating system?

A) Windows

B) Linux

C) Android

D) RTOS

Question 3: What does "virtual memory" allow a computer to do?

A) Increase physical RAM

B) Use disk space as additional memory

C) Access remote servers

D) Speed up CPU performance

Question 4: In which layer of the OSI model does the IP protocol operate?

A) Application

B) Transport

C) Network

D) Data Link

Question 5: What is the main function of a "scheduler" in an operating system?

A) To handle memory management

B) To allocate CPU time to processes

C) To control peripheral devices

D) To monitor system performance

Question 6: What is the function of a "mutex" in concurrent programming?

A) To store data

B) To manage user sessions

C) To control access to a shared resource

D) To optimize performance

Question 7: Which type of network topology connects all devices to a central hub?

A) Bus

B) Ring

C) Star

D) Mesh

Question 8: What is "data encapsulation" in object-oriented programming?

A) Storing data in an array

B) Hiding data implementation details from the user

C) Converting data types

D) Organizing data in a file

Question 9: Which of the following is a benefit of using "cloud computing"?

A) Reduced physical hardware requirements

B) Increased data security

C) Enhanced offline access

D) Fixed pricing models

Question 10: What is the purpose of a "DNS" in networking?

A) To secure data transmissions

B) To assign IP addresses

C) To resolve domain names to IP addresses

D) To encrypt network traffic

Question 11: Which of the following is a characteristic of "volatile memory"?

A) Retains data without power

B) Loses data when power is lost

C) Used for permanent storage

D) Faster than non-volatile memory

Question 12: What does "SQL injection" refer to in cybersecurity?

A) A method of data encryption

B) A technique for bypassing firewalls

C) An attack that targets databases using malicious SQL code

D) A tool for testing web applications

Question 13: Which protocol is primarily used for secure file transfer over the internet?

A) FTP

B) SFTP

C) HTTP

D) SMTP

Question 14: What does "data redundancy" mean in the context of databases?

A) Storing data in multiple formats

B) Backing up data to prevent loss

C) Duplicating data to improve performance

D) Storing the same data in more than one place

Question 15: In programming, what is a "loop"?

A) A function that calls itself

B) A statement that executes a block of code repeatedly

C) A method for organizing data

D) A way to define variables

Question 16: Which of the following is an example of a "software bug"?

A) A missing feature

B) A programming error that causes incorrect behavior

C) A successful software update

D) A feature enhancement

Question 17: What is the primary purpose of "firewalls"?

A) To increase internet speed

B) To block unauthorized access to a network

C) To manage user permissions

D) To monitor system performance

Question 18: Which type of attack involves overwhelming a system with traffic?

A) Phishing

B) Man-in-the-middle

C) Denial-of-Service (DoS)

D) SQL Injection

Question 19: What does "API" stand for in programming?

A) Application Programming Interface

B) Automated Process Interface

C) Active Programming Integration

D) Advanced Programming Instruction

Question 20: Which of the following is a benefit of using "version control systems"?

A) Increased data redundancy

B) Enhanced collaboration among developers

C) Reduced data security

D) Slower development processes

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