CCNA: Cisco Certified Network Associate — Question 598

What is the definition of backdoor malware?

Answer options

• A. malicious code that is installed onto a computer to allow access by an unauthorized user
• B. malicious program that is used to launch other malicious programs
• C. malicious code that infects a user machine and then uses that machine to send spam
• D. malicious code with the main purpose of downloading other malicious code

Correct answer: A

Explanation

The correct answer, A, accurately describes backdoor malware as it allows unauthorized access to a system. Options B, C, and D refer to different types of malware behaviors, such as launching other malware or sending spam, which do not encompass the primary function of backdoor malware.