Computer Security and Troubleshooting Quizzes | Learn Online

Question 1

Which firewall type inspects network traffic at the packet level, applying predefined rules to filter it?

Accepted Answer

Packet-filtering firewall

Answer

Stateful inspection firewall

Answer

Proxy firewall

Answer

Application-layer firewall

Question 2

In computer security, what is the main role of a firewall?

Accepted Answer

Preventing unauthorized access to a computer system

Answer

Detecting and removing viruses and malware

Answer

Creating and storing backup data

Answer

Enhancing computer system performance

Question 3

Which type of malware is designed to encrypt personal files on your computer and extort a payment to decrypt them?

Accepted Answer

Ransomware

Answer

Worm

Answer

Trojan

Answer

Spyware

Question 4

Which of the following is NOT a type of malicious software (malware)?

Accepted Answer

Antivirus

Answer

Virus

Answer

Trojan

Answer

Spyware

Question 5

Malware can come in various forms, but which file type is commonly exploited to spread and infect unsuspecting devices?

Accepted Answer

.exe

Answer

.pdf

Answer

.jpg

Answer

.docx

Question 6

What is a primary purpose of a firewall?

Accepted Answer

Filter network traffic

Answer

Block website access

Answer

Detect and remove malware

Answer

Prevent phishing attacks

Question 7

Which of the following is NOT a type of malicious software (malware)?

Accepted Answer

Anti-virus software

Answer

Virus

Answer

Trojan horse

Answer

Spyware

Question 8

What is the main reason for using a firewall?

Accepted Answer

To prevent unauthorized access to your computer

Answer

To find and remove viruses and malware

Answer

To create backups of your files

Question 9

Which type of software is designed to protect a computer network from unauthorized access, unlike a virus?

Accepted Answer

Firewall

Answer

Spyware

Answer

Adware

Answer

Botnet

Question 10

Which type of malware is designed to surreptitiously collect and transmit sensitive information, such as passwords and financial data?

Accepted Answer

Spyware

Answer

Adware

Answer

Ransomware

Answer

Virus

Question 11

Which of the following is NOT a type of malicious software (malware)?

Accepted Answer

Spreadsheet

Answer

Virus

Answer

Worm

Question 12

When exchanging data over a network, which measure is essential for protecting the privacy and integrity of sensitive information?

Accepted Answer

Encrypted Communication Protocols

Answer

Anti-virus Software

Answer

Firewalls

Answer

Data Backup Systems

Question 13

What is a key benefit of using a virtual private network (VPN)?

Accepted Answer

Secure and private access to public Wi-Fi networks

Answer

Increased internet browsing speed

Answer

Restricted access to specific websites

Question 14

What is a key characteristic of a rootkit?

Accepted Answer

Rootkits allow unauthorized users to gain privileged access to a computer system.

Answer

Rootkits are easily detected by antivirus software.

Answer

Rootkits are mainly spread through phishing emails.

Question 15

How does antivirus software detect and eliminate malware from a computer system?

Accepted Answer

Monitors the system for suspicious activities

Accepted Answer

Scans files and programs before execution

Accepted Answer

Updates its database of known malware

Answer

Relies on user input to identify threats

Question 16

To safeguard your computer against malware, which practice is crucial?

Accepted Answer

Using a reliable antivirus program and firewall

Answer

Opening email attachments from unknown senders without caution

Answer

Installing software from untrustworthy sources

Answer

Ignoring updates for your operating system and software

Question 17

When troubleshooting computer issues, which system log provides the most detailed information about both hardware and software events?

Accepted Answer

System log

Answer

Application log

Answer

Security log

Question 18

Which of the following is NOT a type of malware?

Accepted Answer

Antivirus Software

Answer

Spyware

Answer

Ransomware

Question 19

Which of the following is NOT a type of malware?

Accepted Answer

Adware

Answer

Virus

Answer

Worm

Answer

Trojan horse

Question 20

Which of these is NOT a type of malware?

Accepted Answer

Spam

Answer

Virus

Answer

Worm

Question 21

Which of the following is NOT a type of malicious software (malware) that can infect a computer?

Accepted Answer

Antivirus software

Answer

Worms

Answer

Ransomware

Answer

Botnets

Question 22

Which type of malicious software is capable of duplicating itself and propagating across multiple computers, potentially causing extensive damage to systems?

Accepted Answer

Computer virus

Answer

Trojan horse

Answer

Adware

Answer

Firewall

Question 23

To protect your computer from malware, which action should you take?

Accepted Answer

Keep software updated

Answer

Disable firewalls

Answer

Click on all email links

Answer

Open all email attachments

Question 24

Malware can spread into a computer system through various methods. Which of the following is NOT a common method for malware distribution?

Accepted Answer

Transferring files via Bluetooth

Answer

Visiting malicious websites

Answer

Opening phishing emails

Answer

Using unsecured Wi-Fi networks

Question 25

Within intrusion detection systems (IDS), what is the main purpose of the signature-based approach?

Accepted Answer

Comparing network traffic to a database of known attack signatures to find possible threats

Answer

Identifying network traffic patterns that differ from typical behavior

Answer

Examining system logs for suspicious activities or patterns

Question 26

What is the main purpose of a firewall in protecting a computer network?

Accepted Answer

To prevent unauthorized access to a network

Answer

To identify and isolate suspicious files in emails

Answer

To scan for malware and viruses regularly

Answer

To store and back up important files

Question 27

Which of the following is NOT a type of malicious software (malware)?

Accepted Answer

Software glitch

Answer

Virus

Answer

Worm

Answer

Trojan horse

Question 28

When your computer is infected with malware, what should you do first?

Accepted Answer

Run a full system scan with your current antivirus software.

Answer

Install a new antivirus program.

Answer

Restart your computer in Safe Mode.

Answer

Contact a computer repair technician.

Question 29

To efficiently troubleshoot computer issues, which system log offers comprehensive details on both hardware and software events?

Accepted Answer

System logs

Answer

Application logs

Answer

Security logs

Question 30

To restore a system to its previous working state, which backup type is required?

Accepted Answer

Full backup

Answer

Incremental backup

Answer

Differential backup

Answer

Mirror backup

Question 31

Which of the following is NOT a common symptom of malware infection on a computer?

Accepted Answer

No apparent symptoms

Answer

Slow performance

Answer

Increased internet usage

Answer

Pop-up ads and unwanted toolbars

Question 32

When a computer system fails, which restore method uses a previously created system image to completely restore the system to its previous working state?

Accepted Answer

Image-based restore

Answer

Incremental restore

Answer

System restore point

Answer

Differential restore

Question 33

Which of the following is a common symptom of a malware infection on your computer?

Accepted Answer

Slow computer performance

Accepted Answer

Frequent system crashes

Answer

Regular software updates

Question 34

Which type of malware encrypts personal files on a computer and demands a ransom payment to decrypt them?

Accepted Answer

Ransomware

Answer

Virus

Answer

Trojan horse

Answer

Spyware

Question 35

How do firewalls primarily determine whether to allow or block network packets?

Accepted Answer

By inspecting packet header information based on rules

Answer

By scanning traffic against a threat database

Answer

By analyzing packet contents for suspicious activity

Answer

By using artificial intelligence to detect and block threats

Question 36

Encryption is a process that transforms data into an unreadable format using a specific algorithm and key. What is the main benefit of using encryption for data protection?

Accepted Answer

Protects data from unauthorized access and ensures confidentiality.

Answer

Detects and repairs errors that occur during data transmission.

Answer

Reduces file sizes for more efficient data storage.

Answer

Eliminates viruses and other malicious software.

Question 37

Why are regular software updates and patches crucial for computer security?

Accepted Answer

They fix known security vulnerabilities, preventing attackers from exploiting them.

Answer

They improve software performance and stability.

Answer

They add new features and functionality to software.

Answer

They are unnecessary for most software programs.

Question 38

Which cyberattack disrupts a network or website by overwhelming it with excessive traffic?

Accepted Answer

Distributed Denial of Service (DDoS) attack

Answer

Malware attack

Answer

Phishing attack

Answer

Spam attack

Question 39

What is social engineering, and how do attackers use it to trick people into compromising their computer security?

Accepted Answer

Social engineering is a method of gaining access to a computer system by exploiting the trust and confidence of its users.

Answer

Social engineering is a type of malware that affects computer hardware.

Answer

Social engineering is a process of using technical knowledge to troubleshoot computer problems.

Answer

Social engineering is a cloud-based application for storing data.

Question 40

Describe the concept of intrusion prevention systems (IPS) and explain how their functionality differs from intrusion detection systems (IDS).

Accepted Answer

IPS proactively prevent intrusions by analyzing network traffic and blocking malicious activity, while IDS monitor network traffic for suspicious patterns and alert administrators.

Answer

IPS and IDS are both reactive systems that detect and respond to security breaches.

Answer

IPS and IDS have identical functionalities and differ only in their implementation.

Question 41

How does mobile device security affect an organization's overall security posture, considering the challenges and trends in mobile device usage?

Accepted Answer

Mobile device security is a growing concern due to the increasing use of personal devices for work and the rise of mobile threats.

Answer

Mobile device security has no impact on an organization's security posture.

Answer

Organizations should use the same security measures for mobile devices as they do for desktop computers.

Answer

Organizations should allow employees to use personal mobile devices for work without any security restrictions.

Question 42

How does the Internet of Things (IoT) affect cybersecurity, considering the specific security concerns and weaknesses associated with connected devices?

Accepted Answer

The unique security challenges associated with IoT devices include resource limitations, connectivity issues, and the potential for botnet attacks.

Answer

IoT devices improve cybersecurity by providing additional layers of protection.

Answer

The growing number of connected devices through IoT has no significant impact on cybersecurity.

Answer

IoT devices are inherently secure because they have limited functionality and don't store sensitive data.

Question 43

Which type of security audit involves imitating a malicious attack to uncover weaknesses in a system?

Accepted Answer

Penetration testing

Answer

Vulnerability assessment

Answer

Code review

Question 44

Which of the following is NOT a primary type of cloud computing service model?

Accepted Answer

Desktop as a Service (DaaS)

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Question 45

Which action is considered unethical for cybersecurity professionals?

Accepted Answer

Hacking into systems without permission

Answer

Protecting confidential data

Answer

Following industry standards

Answer

Informing users about cybersecurity threats

Question 46

Which fundamental principle is crucial for secure software development?

Accepted Answer

Following secure coding practices to reduce vulnerabilities

Answer

Prioritizing code efficiency and performance optimization

Answer

Using different programming languages to make exploitation harder

Question 47

What are the key steps and elements of an incident response plan? Why is it important to have a well-defined plan in place?

Accepted Answer

An incident response plan outlines roles, communication channels, and steps for containing, eliminating, and recovering from incidents.

Answer

An incident response plan mainly focuses on recovering lost data after an incident has occurred.

Answer

Organizations can rely solely on external cybersecurity experts to handle incidents, making an incident response plan unnecessary.

Answer

An incident response plan should be kept highly confidential to prevent potential attackers from exploiting it.

Question 48

Malware that can access and steal your personal information is known as:

Accepted Answer

Spyware

Answer

Virus

Answer

Spam

Answer

Cookie

Question 49

When creating a strong password, avoid:

Accepted Answer

Incorporation of common words or phrases.

Answer

Length of at least 12 characters.

Answer

Combination of uppercase and lowercase letters.

Answer

Inclusion of special characters like symbols or numbers.

Question 50

For reliable data backup, consider:

Accepted Answer

Both A and B.

Answer

Cloud storage services.

Answer

External hard drives.

Answer

Emailing files to yourself.

Question 51

A firewall provides the potential benefit of:

Accepted Answer

Both A and B.

Answer

Preventing unauthorized access to your computer.

Answer

Blocking malicious software from infiltrating your system.

Question 52

What is the primary function of a firewall?

Accepted Answer

To prevent unauthorized access to a computer or network

Answer

To scan for and remove viruses

Answer

To optimize internet connection speed

Answer

To clear browsing history

Question 53

Which of the following is considered a good security practice?

Accepted Answer

Enabling pop-up blockers

Answer

Using a password that is easy to remember

Answer

Downloading files from untrusted websites

Answer

Ignoring software updates

Question 54

What is the recommended action if you receive a suspicious email?

Accepted Answer

Delete the email without opening it

Answer

Open the email immediately

Answer

Forward the email to a friend

Answer

Call the sender

Question 55

Which of the following is a primary benefit of using a Virtual Private Network (VPN)?

Accepted Answer

Enhanced online privacy

Answer

Increased internet speed

Answer

Unlimited data usage

Answer

Access to blocked websites

Question 56

To protect your computer from viruses, it is advisable to:

Accepted Answer

Keep your operating system up-to-date

Answer

Use an outdated antivirus program

Answer

Download files from unfamiliar sources

Answer

Open email attachments from unknown senders

Question 57

What is the primary function of a firewall?

Accepted Answer

Prevent unauthorized access to your computer network

Answer

Repair damaged computer files

Answer

Scan for and remove viruses

Answer

Enhance your internet connection speed

Question 58

When troubleshooting a computer issue, the initial step should be:

Accepted Answer

Restarting the computer

Answer

Contacting technical support

Answer

Running a diagnostic test

Answer

Reinstalling the computer's operating system

Question 59

Which of the following is NOT a symptom of a computer virus infection?

Accepted Answer

Increased storage space

Answer

Slow computer performance

Answer

Frequent error messages

Answer

Pop-up advertisements

Question 60

What is the key difference between a worm and a virus?

Accepted Answer

Worms have the ability to self-replicate, unlike viruses.

Answer

Viruses can infect executable files, while worms cannot.

Answer

Worms are primarily spread through networks, not viruses.

Answer

There is no distinction between worms and viruses.

Question 61

What is the purpose of a phishing scam?

Accepted Answer

To deceive individuals into disclosing personal information

Answer

To infect computers with malicious software

Answer

To commit identity theft

Answer

To steal money from bank accounts

Question 62

In cloud computing, which model outlines the shared duties between cloud service providers and customers for maintaining cloud security?

Accepted Answer

Shared Responsibility Model

Answer

Exclusive Responsibility Model

Answer

Zero Responsibility Model

Question 63

How do encryption algorithms contribute to protecting data confidentiality, integrity, and authenticity?

Accepted Answer

By encrypting data using a key, ensuring its confidentiality, integrity, and authenticity.

Answer

By solely ensuring data confidentiality, but not integrity or authenticity.

Answer

By not being used for data security purposes.

Question 64

What is the primary purpose of a firewall?

Accepted Answer

To prevent unauthorized access to your computer

Answer

To scan for and remove viruses

Answer

To improve internet speed

Answer

To store and retrieve files