Computer Science Security & Databases

Question 1

What is the primary goal of cybersecurity?

Accepted Answer

To protect systems and data from cyber threats

Answer

The primary goal of cybersecurity is to protect computer systems, networks, and data from unauthorized access, damage, or theft. It involves implementing various technologies, processes, and controls to defend against cyber threats like malware, phishing, and data breaches. This ensures the confidentiality, integrity, and availability of information assets, safeguarding critical infrastructure and personal data.

Question 2

Which type of cyber attack involves tricking individuals into providing sensitive information?

Accepted Answer

Phishing

Answer

Phishing is a type of cyber attack where attackers attempt to trick individuals into revealing sensitive information, such as usernames, passwords, and credit card details. This is typically achieved by disguising as a trustworthy entity in electronic communication, like emails or text messages. The goal is to gain unauthorized access to accounts or systems by exploiting human trust.

Question 3

Which database model organizes data in tables with rows and columns?

Accepted Answer

Relational database

Answer

A relational database organizes data into one or more tables, also known as 'relations,' consisting of rows and columns. Each row represents a record, and each column represents an attribute of that record. This model uses relationships between tables, typically through primary and foreign keys, to link related data, making it highly structured and efficient for data management and querying.

Question 4

Which SQL command is used to retrieve data from a database?

Accepted Answer

SELECT

Answer

The `SELECT` command is the most fundamental SQL (Structured Query Language) statement used to retrieve data from one or more tables in a database. It allows users to specify which columns to retrieve, from which tables, and under what conditions using clauses like `WHERE` and `ORDER BY`. This command is essential for querying and extracting specific information from a relational database.

Question 5

What is the purpose of data encryption in cybersecurity?

Accepted Answer

To protect data by converting it into a secure format

Answer

The purpose of data encryption in cybersecurity is to protect data by converting it into a secure, unreadable format called ciphertext. Only individuals with the correct decryption key can convert the ciphertext back into its original, readable form. This process ensures the confidentiality of sensitive information, even if it is intercepted by unauthorized parties, making it a critical security measure.

(CS) Computer Science Practice Test

(CS) Computer Science Practice Test

Computer Science Security & Databases