Understanding Computers

What is the main function of the CPU?

• To provide power to the computer

• To manage network connections

• To store data permanently

• The main function of the CPU is to execute instructions and process data.

Name two types of computer memory.

• Cache, Flash

• SSD, HDD

• Virtual, Physical

• RAM, ROM

What is an operating system?

• A user interface design tool.

• A programming language used for software development.

• A type of computer hardware component.

• An operating system is software that manages computer hardware and software resources.

List three popular operating systems.

• Unix

• iOS

• Android

• Microsoft Windows, macOS, Linux

What is the purpose of antivirus software?

• To provide a backup solution for files.

• To manage software updates automatically.

• To enhance internet speed and performance.

• The purpose of antivirus software is to protect computers from malware and ensure system security.

Define phishing in the context of cybersecurity.

• Phishing is a method of securing sensitive information through encryption.

• Phishing refers to the process of creating secure passwords for online accounts.

• Phishing is a technique used to enhance cybersecurity by monitoring user behavior.

• Phishing is a fraudulent attempt to obtain sensitive information by disguising as a trustworthy source in digital communications.

What is a relational database?

• A relational database is a type of cloud storage service.

• A relational database is a collection of unrelated files.

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

• A relational database is a database that organizes data into tables that can be linked—or related—based on data common to each.

Name a common database management system.

• MongoDB

• SQLite

• PostgreSQL

• MySQL

What does SQL stand for?

• Structured Query Language

• Standard Query Language

• Simple Query Language

• Structured Query List

Explain the concept of data encryption.

• Data encryption refers to the physical security of data storage devices.

• Data encryption is the process of deleting data permanently.

• Data encryption is a method of increasing data storage capacity.

• Data encryption is the transformation of data into a secure format that can only be read or processed after decryption.