Antivirus servers can detect which malware types?

• A. Viruses
• B. Worms
• C. Trojan horses
• D. All of the above

Answer: (D)

Antivirus servers are designed to recognize a range of malicious software, not just viruses. A virus attaches to legitimate files and spreads when those files are opened; a worm propagates through networks by exploiting vulnerabilities or using self-replication; a Trojan horse hides inside what looks like legitimate software or data but carries a hidden malicious payload. Modern antivirus systems combine signature-based detection with heuristics, behavioral monitoring, sandboxing, and cloud threat intelligence, enabling them to identify these different forms across endpoints and even in network traffic. Because all three categories are within what a robust antivirus solution aims to detect, the best answer is that all of the above are detectable.