This set of Cyber Security Multiple Choice Questions & Answers (MCQs) focuses on “Attack Vectors – Trojans and Backdoors – 1”.
1. A ___________ is a small malicious program that runs hidden on infected system.
a) Virus
b) Trojan
c) Shareware
d) Adware
View Answer
Explanation: A Trojan is a small malicious program that runs hidden on the infected system. They are created with the intent and they infected the system by misleading the user. It works in the background and steals sensitive data.
2. ____________ works in background and steals sensitive data.
a) Virus
b) Shareware
c) Trojan
d) Adware
View Answer
Explanation: Trojans are malicious files designed to work hidden on the infected system. They are intended to infect the system by misleading the user. It works in the background and steals sensitive information about the target user.
3. By gaining access to the Trojaned system the attacker can stage different types of attack using that ____________ program running in the background.
a) Trojan
b) Virus
c) Antivirus
d) Anti-malware
View Answer
Explanation: By gaining access to the Trojaned system the attacker can stage different types of attack using that Trojan program running in the background when the infected user’s system goes online.
4. Trojan creators do not look for _______________
a) Credit card information
b) Confidential data
c) Important documents
d) Securing systems with such programs
View Answer
Explanation: Trojan creators do not look for securing victim’s system with their programs, rather they create such trojans for stealing credit card and financial details as well as important documents and files.
5. Which of them is not a proper way of getting into the system?
a) IM
b) Attachments
c) Official product sites
d) Un-trusted sites, freeware and pirated software
View Answer
Explanation: Official product sites such as Microsoft’s site giving the option for downloading their updates and OS won’t contain any Trojans. Other than that Trojans can access your system by email attachments, Instant Messaging apps, un-trusted sites & links.
6. Which of the following port is not used by Trojans?
a) UDP
b) TCP
c) SMTP
d) MP
View Answer
Explanation: MP is not a valid port name and does not have any port number also. But usually, Trojans likeBack Orifice, Deep Throat use UDP port; Trojans like Netbus, Master Paradise uses TCP & SMTP port to gain access to a system.
7. Trojans do not do one of the following. What is that?
a) Deleting Data
b) Protecting Data
c) Modifying Data
d) Copying Data
View Answer
Explanation: Trojans perform malicious actions and operations. These are to modify data, copy data to its creator, delete data from the infected system or blocking data by carrying ransomware or other malicious programs along with it.
8. Some Trojans carry ransomware with them to encrypt the data and ask for ransom.
a) True
b) False
View Answer
Explanation: Trojans are usually created to carry out the following actions like: modify data, copy data to its creator, delete data from the infected system or blocking data by carrying ransomware embedded in it.
9. Once activated __________ can enable ____________to spy on the victim, steal their sensitive information & gain backdoor access to the system.
a) virus, cyber-criminals
b) malware, penetration testers
c) trojans, cyber-criminals
d) virus, penetration testers
View Answer
Explanation: Once activated, trojans can enable cyber-criminals to spy on the victim, steal their sensitive information & gain backdoor access to the system.
10. Trojans can not ______________
a) steal data
b) self-replicate
c) steal financial information
d) steal login credentials
View Answer
Explanation: A Trojan is a malicious program that runs hidden on the infected system. They are developed with the intent and they infected the system by misleading the user. It works behind the system and steals sensitive data but cannot self-replicate.
11. A _______________ provides malicious users remote control over the targeted computer.
a) DDoS-Trojan
b) Backdoor Trojan
c) Trojan-Banker
d) Trojan-Downloader
View Answer
Explanation: A Backdoor Trojan provides malicious users remote control over the targeted computer. These trojans enable the author to perform anything they desire on the infected system which includes sending, receiving, launching & deleting files.
12. _______________ programs are specially designed for stealing your account data for online banking systems, e-payment services & credit/debit cards.
a) DDoS-Trojan
b) Backdoor Trojan
c) Trojan-Banker
d) Trojan-Downloader
View Answer
Explanation: Trojan-Banker is programs are specially designed for stealing your account data for online banking systems, e-payment services & credit/debit cards. They work silently in the back of the system process to steal such data.
13. ______________ perform automated DoS (Denial of Service) attacks on a targeted web address.
a) DDoS-Trojan
b) Backdoor Trojan
c) Trojan-Banker
d) Trojan-Downloader
View Answer
Explanation: DDoS Trojan performs automated DoS (Denial of Service) attacks on a targeted web address. By sending multiple requests from your system, it can target different websites which can lead to a Denial of Service attack.
14. Trojan-Downloader is a special type of trojans which can download & install new versions of malicious programs.
a) True
b) False
View Answer
Explanation: Trojan-Downloader is another type of trojans that can download & install new versions of malicious programs. They work secretly & keep on downloading other malicious programs when the system is online.
15. ____________ work in background & keeps on downloading other malicious programs when the system is online.
a) DDoS-Trojan
b) Backdoor Trojan
c) Trojan-Banker
d) Trojan-Downloader
View Answer
Explanation: Trojan-Downloader is a special type of trojans that work secretly & keep on downloading other malicious programs when the system is online. They can also download & install new versions of malicious programs.
Sanfoundry Global Education & Learning Series – Cyber Security.
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