CompTIA ITF+ (FC0-U61) — Question 189

Which of the following is the BEST method for ensuring there is no Telnet access?

Answer options

• A. Network sniffer
• B. Intrusion detection system
• C. Antivirus software
• D. Host-based firewall

Correct answer: D

Explanation

The best way to ensure there is no Telnet access is by using a Host-based firewall, which can explicitly block Telnet traffic. A Network sniffer and an Intrusion detection system can monitor traffic but do not actively prevent access, while Antivirus software is designed to detect and eliminate malware, not manage network access protocols.