Cybersecurity and Computer Basics Quiz

What is the Caesar Cipher primarily used for?

• Encryption of messages

• Data storage

• Network security

• Web development

Answer explanation

The Caesar Cipher is a simple encryption technique used to encode messages by shifting letters in the alphabet. Its primary purpose is to secure communication by making the message unreadable to unauthorized users.

What does the 'A' in the CIA Triad stand for?

• Availability

• Integrity

• Efficiency

• Encryption

Answer explanation

The 'A' in the CIA Triad stands for Availability, which ensures that information and resources are accessible to authorized users when needed. This is crucial for maintaining operational effectiveness.

Which component of a computer is known as the 'brain'?

• Central Processing Unit (CPU)

• Graphics Card

• Power Supply Unit (PSU)

• Hard Drive

Answer explanation

The Central Processing Unit (CPU) is referred to as the 'brain' of the computer because it performs the majority of processing tasks, executing instructions and managing operations, making it essential for overall functionality.

What type of malware disguises itself as legitimate software?

• Worm

• Trojan Horse

• Spyware

• Virus

Answer explanation

A Trojan Horse is a type of malware that pretends to be legitimate software, tricking users into installing it. Unlike viruses or worms, it does not replicate itself but can cause significant harm once activated.

What is the main purpose of a worm in cybersecurity?

• To replicate and spread

• To encrypt files

• To monitor user activity

• To steal passwords

Answer explanation

The main purpose of a worm in cybersecurity is to replicate and spread across networks without user intervention, making it a significant threat. Unlike other malware, worms do not need to attach to a host file.

What does phishing aim to do?

• Encrypt data

• Steal sensitive information

• Repair systems

• Create backups

Answer explanation

Phishing aims to steal sensitive information, such as passwords and credit card details, by tricking individuals into providing it through deceptive emails or websites.

What is the function of RAM in a computer?

• Temporary data storage

• Permanent data storage

• Power supply management

• Graphics rendering

Answer explanation

RAM (Random Access Memory) serves as temporary data storage, allowing the computer to quickly access and manipulate data while programs are running. It is volatile memory, meaning it loses its contents when power is off.

Which of the following is a method to ensure data integrity?

• Using a firewall

• Keeping backups of data

• Encrypting emails

• Installing antivirus software

Answer explanation

Keeping backups of data is essential for data integrity as it ensures that you can restore lost or corrupted data. Other options like firewalls and antivirus software protect against threats but do not directly ensure data integrity.

What does a DDoS attack aim to do?

• Overwhelm a resource

• Monitor user activity

• Steal data

• Encrypt files

Answer explanation

A DDoS attack aims to overwhelm a resource, such as a server or network, by flooding it with excessive traffic, rendering it unable to respond to legitimate requests. This is why 'overwhelm a resource' is the correct answer.

Which component connects all parts of a computer?

• Motherboard

• Hard Drive

• CPU

• Graphics Card

Answer explanation

The motherboard is the main circuit board that connects all components of a computer, including the CPU, RAM, and storage devices. It allows communication between these parts, making it essential for the computer's operation.