Mastering Computer Concepts

What is the primary purpose of a computer network?

• The primary purpose of a computer network is to enable communication and resource sharing between devices.

• To provide power to electronic devices.

• To increase the processing speed of a single device.

• To store data permanently on a hard drive.

Define the term 'data structure' and give an example.

• A data structure is a type of algorithm.

• An example of a data structure is a function.

• A data structure is a programming language.

• An example of a data structure is an array.

What is the role of an operating system in a computer?

• To provide internet connectivity to the computer.

• To store all user data permanently.

• To enhance the graphics performance of the computer.

• The role of an operating system in a computer is to manage hardware and software resources, provide a user interface, and enable application execution.

Explain the difference between a compiler and an interpreter.

• A compiler executes code line-by-line, while an interpreter translates the entire code at once.

• A compiler translates the entire code at once, while an interpreter translates and executes code line-by-line.

• Both a compiler and an interpreter translate code simultaneously.

• A compiler is used for scripting languages, while an interpreter is used for compiled languages.

What is a relational database?

• A relational database is a system that only stores images.

• A relational database is a collection of unstructured data.

• A relational database is a type of cloud storage.

• A relational database is a database that organizes data into tables with defined relationships between them.

What is the purpose of firewalls in cybersecurity?

• To store sensitive data securely.

• To enhance the speed of internet connections.

• To monitor and control network traffic, preventing unauthorized access and cyber threats.

• To provide antivirus protection for devices.

Name three common types of data structures.

• arrays, linked lists, hash tables

• queues

• trees

• stacks

What is the function of a network router?

• To store data packets for later retrieval.

• To provide a direct internet connection to devices.

• The function of a network router is to connect different networks and direct data packets between them.

• To amplify network signals for better coverage.

Describe the concept of multithreading in operating systems.

• Multithreading in operating systems allows multiple threads to run concurrently within a single process, sharing resources and improving performance.

• Multithreading allows only one thread to run at a time in an operating system.

• Multithreading is a method to increase the number of processes in an operating system.

• Multithreading isolates threads completely, preventing any resource sharing.

What is SQL and what is it used for?

• SQL is a type of spreadsheet software.

• SQL is a programming language used for managing and manipulating relational databases.

• SQL is used for creating web applications.

• SQL is a markup language for designing websites.