Question 150 of 144
SK0-005 server-administration Practice Question
An administrator needs to remotely manage several Linux servers securely without using passwords. Which of the following is the BEST method?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use SSH with key-based authentication.
Option C is correct because SSH with key-based authentication provides strong, password-less remote access. Option A is wrong because RDP is primarily used on Windows, not typical for Linux. Option B is wrong because Telnet is insecure, and SSH tunneling does not make Telnet secure. Option D is wrong because VNC is less secure and not designed for efficient server administration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Telnet with SSH tunneling.
Why it's wrong here
Telnet transmits data in cleartext, and SSH tunneling does not secure the Telnet protocol itself; it only encrypts the tunnel, but the underlying Telnet session remains vulnerable.
- ✗
Use VNC with a strong password.
Why it's wrong here
VNC is primarily a graphical desktop sharing tool and is not as secure or efficient as SSH for server administration tasks.
- ✗
Use RDP with certificate-based authentication.
Why it's wrong here
RDP is not commonly used for Linux server remote administration; it is more suited for Windows environments.
- ✓
Use SSH with key-based authentication.
Why this is correct
SSH with key-based authentication is the industry standard for secure, password-less remote administration on Linux servers.
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Last reviewed: Jul 26, 2026
This SK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SK0-005 exam.
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