Computer Security Questions with Solutions
Computer security protects computers, networks and data from theft, damage and unauthorised access. This topic covers types of malware (viruses, worms, Trojan horses, ransomware, spyware and adware), common attacks such as phishing, spoofing, denial of service (DoS) and hacking, and protective measures such as antivirus software, firewalls, encryption, strong passwords, two-factor authentication and backups. It also covers basic cryptography terms (plaintext, ciphertext, symmetric and asymmetric encryption), digital signatures, and good cyber hygiene. Exam questions often ask about the difference between similar threats. A virus attaches itself to a program and needs a user action to spread, while a worm spreads across networks on its own. A Trojan horse pretends to be useful software. A firewall monitors and filters network traffic, which is different from antivirus software. Practise the computer security questions below. Each answer includes an explanation.
- Q1.
________ are attempts by individuals to obtain confidential information from you by falsifying their identity.
A. PhishingB. Spyware scamsC. VirusesD. Computer viruseseasyAsked in MAH MCA CET 2023View solution › - Q2.
Why is it unethical to share a copyrighted file with your friend?
A. No, it is legal; we can share it with friendsB. Because it is illegal and against the copyright actC. Because the file may contain sensitive informationD. Because it is against human ethics and valueseasyAsked in MAH MCA CET 2023View solution › - Q3.
Which of the following is used to protect objects in computer system, in the absence of more complete protection schemes?
A. digital certificateB. digital signatureC. passwordsD. tokensmediumAsked in TCS ExamView solution › - Q4.
A _____is a computer, appliance, or router that sits between the trusted and untrusted systems.
A. bridgeB. firewallC. switchD. hubeasyAsked in TCS ExamView solution › - Q5.
Which of the following are valid phases of a computer virus?
A. Only Triggering. ExecutingB. Only Propagation, ExecutingC. Only Dormant, Propagation, Triggering. ExecutingD. Only Dormant, Propagation, TriggeringmediumAsked in TCS ExamView solution › - Q6.
_________ changes each time it is installed to avoid detection by antivirus software.
A. Polymorphic virusB. wormC. logic bombD. trojan horseeasyAsked in TCS ExamView solution › - Q7.
Which mechanism is used by the computer virus 'worm' to duplicate itself?
A. SwapB. IncrementC. SpawnD. SwarmmediumAsked in TCS ExamView solution › - Q8.
Which of the following uses the spawn mechanism to duplicate itself?
A. Trojan horseB. WormC. Keystroke loggerD. Logic bombmediumAsked in TCS ExamView solution › - Q9.
There are viruses that are triggered by the passage of time or on a certain date:
A. Boot sector virusesB. Macro virusesC. Time bombsD. WormseasyAsked in TCS ExamView solution › - Q10.
Which of the following is a program that copies itself over and over eventually causing the computer to crash?
A. FirewallB. Trojan horseC. Logic bombD. WormeasyAsked in TCS ExamView solution › - Q11.
Which of the following is the ability to limit and control the access to host systems and applications via communication links?
A. IntegrityB. AuthorizationC. Access controlD. Authentication.mediumAsked in TCS ExamView solution › - Q12.
A ________ is a type of password that is valid for only one use and is generally randomly generated by specialized software
A. CaptchaB. Secure accessC. One Time Password (OTP)D. CodehackeasyAsked in TCS ExamView solution › - Q13.
In terms of computers, the set of ways in which an adversary can enter a system and can potentially cause damage is called:
A. Attack SurfaceB. Attack SignatureC. Attack PatternD. Attack PathmediumAsked in TCS ExamView solution › - Q14.
The use of mathematical techniques to provide security services, such as confidentiality, data integrity, entity authentication and data origin authentication, is called:
A. CryptologyB. CryptographyC. Cryptographic AlgorithmD. CryptanalysismediumAsked in TCS ExamView solution › - Q15.
Which of the following refers to dangerous programs that can be caught by opening e-mail attachments and downloading software from the internet?
A. UtilityB. VirusC. Honey potD. SpameasyAsked in TCS ExamView solution › - Q16.
VIRUS stands for
A. Vital information Resource Under SearchB. Vital Information Resource Under SiegeC. Verify Interchange Result Until SourceD. Very Important Record User SearchedeasyAsked in TCS ExamView solution › - Q17.
________ is a malware program that, when executed, replicates by, inserting copies of itself into other computer programs, data files, or the boot sector of the hard drive.
A. Infectious ProgramB. VirusesC. ProgramD. Both (2) & (3)easyAsked in TCS ExamView solution › - Q18.
A person who uses his expertise to gain access to other person's computer to get information illegally is known as
A. HackersB. AnalystC. ProgrammerD. InsidereasyAsked in TCS ExamView solution › - Q19.
In which of the following, VIRUS cannot be removed?
A. InternetB. IntranetC. Personal ComputerD. CDmediumAsked in TCS ExamView solution › - Q20.
________ is the act of attempting to acquire information such as usernames, passwords and credit card details (and sometimes, indirectly, money) by masquerading as a trustworthy entity in an electronic communication.
A. SpoofingB. HackingC. PhishingD. WhalingeasyAsked in TCS ExamView solution ›