XK0-005 Exam Dumps | A hardened physical Linux system allows regular, unprivileged users to remotely connect to the server

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CompTIA.XK0-005.v2025-08-23.q155
Question 79

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Question 79/155

A hardened physical Linux system allows regular, unprivileged users to remotely connect to the server using SSH only. No sudo tool has been installed. Which of the following should the Linux administrator use to perform administrative tasks on this host? (Select two).

A. Create an SSH key and copy it to the remote server to allow passwordless log-in.

B. Access the server's physical console and use the root user's password to log in.

C. Install the telnet server on this system to be able to use a root account.

D. Use the su command and enter the root user's password.

E. Install the sudo command using the unprivileged user's account.

F. Add the user to the wheel group.

Correct Answer: B,D

Step-by-Step Comprehensive Detailed
Command
B: Logging into the server's physical console provides direct root access.
D: The su command allows switching to the root user if the password is known.
Why Other Options are Incorrect:
A: Passwordless SSH login does not provide administrative access.
C: Telnet is insecure and typically disabled on hardened systems.
E: Installing sudo requires administrative privileges.
F: Adding a user to the wheel group requires administrative privileges.
Reference:
CompTIA Linux+ Study Guide: User and Group Management
man su

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