CompTIA
XK0-006 · Question #3
XK0-006 Question #3: Real Exam Question with Answer & Explanation
The correct answer is D. Disabling and removing the Telnet service on the server. Port 23/tcp indicates Telnet, which is insecure because it transmits data in plaintext. The best hardening approach is to disable and remove the Telnet service entirely, eliminating the vulnerability rather than just blocking it at the firewall. Secure alternatives like SSH shoul
Question
While hardening a system, an administrator runs a port scan with Nmap, which returned the following output: Which of the following is the best way to address this security issue?
Exhibit
Options
- AConfiguring a firewall to block traffic on port 23 on the server
- BChanging the systems administrator's password to prevent unauthorized access
- CClosing port 80 on the network switch to block traffic
- DDisabling and removing the Telnet service on the server
Explanation
Port 23/tcp indicates Telnet, which is insecure because it transmits data in plaintext. The best hardening approach is to disable and remove the Telnet service entirely, eliminating the vulnerability rather than just blocking it at the firewall. Secure alternatives like SSH should be
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