Computer Science Security & Databases 1 — Questions and Answers

Question 1: What is the primary goal of cybersecurity?

To speed up network performance
To protect systems and data from cyber threats (Correct answer)
To create backup copies of all files
To improve system processing speed

Correct answer: To protect systems and data from cyber threats

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?

Malware
Phishing (Correct answer)
Denial-of-Service (DoS)
Ransomware

Correct answer: Phishing

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?

Hierarchical database
Relational database (Correct answer)
Graph database
NoSQL database

Correct answer: Relational database

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?

INSERT
SELECT (Correct answer)
DELETE
UPDATE

Correct answer: SELECT

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?

To delete unnecessary data
To protect data by converting it into a secure format (Correct answer)
To improve internet speed
To create data backups

Correct answer: To protect data by converting it into a secure format

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.

Question 6: Which cybersecurity measure helps prevent unauthorized access to a network?

A firewall (Correct answer)
A proxy server
A network switch
A web browser

Correct answer: A firewall

A firewall is a crucial cybersecurity measure that helps prevent unauthorized access to a network by acting as a barrier between a trusted internal network and untrusted external networks, such as the internet. It monitors and controls incoming and outgoing network traffic based on predefined security rules. Its primary function is to filter traffic and block malicious or unauthorized connections, protecting the network's integrity.

Computer Science Security & Databases 1

What is the primary goal of cybersecurity?