C191 Operating Systems for Programmers Practice Questions - Set 4 - Part 2

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.

Question 21: What is the purpose of a "kernel" in an operating system?

A) To provide a user interface

B) To manage system resources and hardware communication

C) To compile programs

D) To encrypt data

Question 22: Which of the following is a characteristic of a "distributed system"?

A) All resources are located on a single machine

B) It consists of multiple independent computers working together

C) It requires a centralized control unit

D) It only operates over local networks

Question 23: What does "CPU scheduling" primarily determine?

A) The order in which processes access memory

B) How processes are allocated CPU time

C) The speed of the CPU

D) The type of operating system used

Question 24: What is the function of "access control" in an operating system?

A) To manage system performance

B) To restrict access to resources based on user permissions

C) To optimize memory usage

D) To allocate CPU time

Question 25: Which of the following is a type of "network topology"?

A) Random

B) Circular

C) Star

D) Linear

Question 26: What is the primary function of a "router" in networking?

A) To transmit data within a local network

B) To manage user accounts

C) To forward data packets between networks

D) To secure data transmissions

Question 27: What are "system calls" in an operating system?

A) Requests for memory allocation

B) Methods for managing hardware devices

C) Interface for programs to request services from the OS

D) Commands executed by the kernel

Question 28: Which of the following is a typical use of "cache memory"?

A) To store temporary files

B) To speed up data access

C) To compress data

D) To encrypt sensitive information

Question 29: What is the primary role of "security patches" in software?

A) To enhance performance

B) To fix vulnerabilities and improve security

C) To increase storage capacity

D) To add new features

Question 30: Which of the following protocols is used for secure data transmission over the internet?

A) HTTP

B) FTP

C) HTTPS

D) Telnet

Question 31: What is a "memory leak" in programming?

A) A reduction in available memory

B) An allocation of memory that is never freed

C) A type of buffer overflow

D) An error in file handling

Question 32: Which of the following is a common characteristic of "open-source software"?

A) It is always free of charge

B) The source code is publicly available for modification

C) It cannot be redistributed

D) It is only maintained by a single company

Question 33: What does "encryption" primarily achieve in data security?

A) Increases data size

B) Hides data in plain sight

C) Protects data confidentiality

D) Enhances data integrity

Question 34: Which of the following is a common use of a "firewall"?

A) To improve network speed

B) To filter incoming and outgoing network traffic

C) To increase storage capacity

D) To manage user sessions

Question 35: In a database, what does "normalization" refer to?

A) The process of optimizing queries

B) The organization of data to reduce redundancy

C) The encryption of sensitive data

D) The backup of database files

Question 36: What is the purpose of an "API" in software development?

A) To enhance user experience

B) To facilitate communication between different software applications

C) To improve system performance

D) To manage system resources

Question 37: Which of the following is a primary function of an "operating system"?

A) To manage hardware resources

B) To compile software applications

C) To design user interfaces

D) To provide internet connectivity

Question 38: What does "malware" refer to?

A) Software that improves performance

B) Harmful software designed to damage or exploit systems

C) Software used for data backup

D) A programming language

Question 39: Which of the following best describes "cloud storage"?

A) Data stored on a physical hard drive

B) Data stored on remote servers accessed via the internet

C) Data stored in local memory

D) Data stored only on mobile devices

Question 40: In the context of databases, what does "SQL" stand for?

A) Structured Query Language

B) Simple Query Language

C) Secure Query Language

D) Standard Query Language

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