Computer Virus, Database, and Conjunctions

What is a computer virus?

• A physical device used to store computer data

• A type of helpful software that improves the performance of a computer

• A type of malicious software that can replicate itself and spread to other computers, causing harm to the system or stealing personal information.

• A type of insect that infects computers

Name two types of computer viruses.

• Malware and Ransomware

• Phishing and Pharming

• Worms and Trojans

• Spyware and Adware

What are the common ways to prevent computer viruses?

• Using antivirus software, keeping the operating system and software updated, being cautious of email attachments and links, and avoiding suspicious websites.

• Eating a healthy diet

• Leaving the computer on 24/7

• Clicking on every pop-up ad

What is a database management system (DBMS)?

• A type of computer virus

• A programming language

• A software that allows for the creation, organization, and management of databases.

• A hardware component of a computer

What are the key features of a relational database?

• Tables, rows, columns, primary keys, foreign keys, and the ability to establish relationships between tables

• Variables, functions, and loops

• Files, folders, and directories

• Graphs, nodes, edges, and vertices

What is a conjunction in English grammar?

• A type of insect

• A type of dessert

• A type of computer virus

• A part of speech that connects words, phrases, or clauses together

Provide an example of a coordinating conjunction.

• or

• because

• and

• but

How does a Trojan horse virus work?

• It is easily detected and removed by antivirus software

• It can only affect computers running on Windows operating system

• It disguises itself as a legitimate file or program to trick users into downloading and installing it.

• It spreads through physical contact with infected devices

What is the role of primary key in a relational database?

• It uniquely identifies each record in a table and ensures that each record is unique.

• It allows multiple records to have the same value

• It stores all the data in the database

• It is used for sorting the records in the table

Name two popular DBMS software.

• MySQL and PostgreSQL

• MongoDB and Redis

• Access and SQLite

• Oracle and Microsoft SQL Server