Sim-Ex™ Practice Exams for CCST Cybersecurity: Practice questions


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Q4. Which of the following is a type of malware that threatens to blocks access to data or a computer system, usually by encrypting it.

A. Backdoor

B. Ransomware

C. Keylogger

D. Rootkit

Correct Answer: B


Crpto-malware: Type of ransomware that encrypts user's files, and demands ransom. Sophisticated crypto-malware uses advanced encryption methods so files could not be decrypted without unique key.
Ransomware: Ransomware is a form of malicious software (or malware) that, once it's taken over your computer, threatens you with harm, usually by denying you to, access to your data. The attacker demands a ransom from the victim, promising not always truthfully - to restore access to the data upon payment.
Logic Bomb: Software that is inherently malicious, such as viruses and worms, often contain logic bombs that execute a certain payload at a pre-defined time or when some other condition is met. This technique can be used by a virus or worm to gain momentum and spread before being noticed.
Root Kit: Rootkits are malicious software that gives hackers the full administrator rights of your PC. It helps hackers in changing or altering the system settings or files the way an administrator could do. Though, initially the rootkit was developed as legitimate software to use it as backdoor access to fix the software issues at a later stage, it turned into a malicious software virus at later stages.
Keylogger: Keyloggers work behind the scenes, sniffing out the keystrokes while the computer continues to operate normally. But even if they don't harm the hardware, keyloggers are definitely a threat to users, especially when they steal data pertinent to any number of online payment systems, etc.

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