Computer Security Viruses Malware Competitive Exams
30 questions · Basic Computer & IT
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Question 1 of 30
Heuristic-based antivirus detection differs from signature-based detection mainly because heuristic methods:
ExplanationHeuristic detection looks for suspicious behavior patterns, allowing it to potentially catch new or previously unknown malware.
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Question 2 of 30
A computer worm differs from a virus mainly because a worm can:
ExplanationUnlike viruses, worms are self-replicating and can spread across networks on their own, without needing to attach to another program.
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Question 3 of 30
Fileless malware is notable because it operates primarily:
ExplanationFileless malware resides and operates mainly in system memory, making it harder to detect using traditional file-based antivirus scanning.
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Question 4 of 30
A keylogger is a type of malicious software (or hardware) designed to:
ExplanationKeyloggers covertly track and record keystrokes, which attackers can use to steal passwords and other sensitive information.
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Question 5 of 30
A worm's ability to self-replicate and spread across networks makes it particularly dangerous because it can:
ExplanationWorms can automatically spread across networks, often without any user interaction, allowing rapid and widespread infection.
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Question 6 of 30
A 'logic bomb' is a type of malicious code that is designed to:
ExplanationA logic bomb lies dormant until a specific trigger condition, such as a certain date or event, activates its malicious payload.
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Question 7 of 30
Regularly installing software updates and security patches is important primarily because it helps:
ExplanationSoftware updates often patch known security vulnerabilities, closing off ways that attackers could otherwise exploit a system.
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Question 8 of 30
Spyware infections can pose a serious privacy risk partly because they may capture sensitive information such as:
ExplanationSpyware often targets sensitive personal data, including login credentials, financial information, and browsing activity.
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Question 9 of 30
A 'zero-day' vulnerability refers to a security flaw that is:
ExplanationZero-day vulnerabilities are security flaws exploited by attackers before developers become aware of them or issue a patch.
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Question 10 of 30
Malware is a general term used to describe:
ExplanationMalware is an umbrella term for any software intentionally designed to damage, disrupt, or gain unauthorized access to systems.
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Question 11 of 30
Antivirus software primarily functions to:
ExplanationAntivirus software scans for, blocks, and removes malware to help protect a computer system.
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Question 12 of 30
Common early symptoms of a malware infection on a computer can include:
ExplanationMalware infections often cause noticeable issues such as slow performance, frequent crashes, or unexpected advertisements and pop-ups.
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Question 13 of 30
Keeping regular backups of important data is a recommended security practice primarily because it helps:
ExplanationRegular backups allow data recovery even if a system is compromised by malware like ransomware, reducing the impact of an attack.
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Question 14 of 30
Macro viruses are a type of malware specifically embedded within:
ExplanationMacro viruses exploit the scripting (macro) capabilities found in applications like word processors and spreadsheets.
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Question 15 of 30
A honeypot, used in cybersecurity research and defense, is best described as a:
ExplanationA honeypot is a deliberately vulnerable decoy system set up to lure attackers, allowing security professionals to study their methods.
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Question 16 of 30
A 'backdoor' in computer security refers to a:
ExplanationA backdoor provides a hidden, often unauthorized way to bypass normal security controls and access a system.
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Question 17 of 30
A 'drive-by download' refers to malware that is installed on a system:
ExplanationDrive-by downloads exploit vulnerabilities to install malware automatically when a user visits a malicious or compromised webpage, often without their knowledge.
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Question 18 of 30
Adware is a type of software that is primarily known for:
ExplanationAdware generates unwanted advertisements, often installed alongside free software a user downloads.
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Question 19 of 30
A Trojan horse, a type of malware, is named for its tendency to:
ExplanationTrojan horse malware disguises itself as legitimate software to deceive users into installing it voluntarily.
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Question 20 of 30
A botnet refers to a network of:
ExplanationA botnet consists of numerous infected ('zombie') computers that attackers can control remotely, often to launch coordinated attacks.
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Question 21 of 30
Spyware is malicious software designed primarily to:
ExplanationSpyware covertly gathers information about a user's activities, often without their knowledge or consent.
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Question 22 of 30
A computer 'exploit' refers to a piece of code or technique that takes advantage of a:
ExplanationAn exploit specifically targets and takes advantage of a known or unknown vulnerability in software or hardware.
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Question 23 of 30
A software sandbox, used in cybersecurity, is primarily designed to:
ExplanationSandboxing allows a program to run in an isolated environment, letting analysts observe its behavior without risking the main system.
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Question 24 of 30
Signature-based antivirus detection works primarily by:
ExplanationSignature-based detection identifies malware by matching it against a database of previously identified malicious code patterns.
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Question 25 of 30
A rootkit is a type of malware specifically designed to:
ExplanationRootkits are designed to hide their presence while granting attackers persistent, privileged access to a compromised system.
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Question 26 of 30
A DDoS (Distributed Denial of Service) attack primarily aims to:
ExplanationDDoS attacks flood a target with overwhelming traffic from multiple sources, aiming to disrupt or disable its normal operation.
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Question 27 of 30
Phishing, often used as a method to deliver malware or steal credentials, typically involves:
ExplanationPhishing attacks use deceptive messages, often mimicking trusted sources, to trick victims into revealing sensitive data or installing malware.
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Question 28 of 30
Quarantining a suspicious file, a common antivirus function, involves:
ExplanationQuarantine isolates a suspicious file in a secure location, preventing it from causing harm while allowing for further review.
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Question 29 of 30
Ransomware is a type of malware that primarily:
ExplanationRansomware encrypts the victim's data and demands a ransom payment, typically in exchange for a decryption key.
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Question 30 of 30
A computer virus is a type of malware that primarily:
ExplanationA virus requires a host program or file to attach to and typically spreads when that infected file is run.
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