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Dumpexams offers verified, authentic CompTIA XK0-006 Real Questions and answers, which are essential for passing the CompTIA Linux+ Certification Exam (XK0-006). These questions and answers have been designed by Sitecore experts and can be easily downloaded on a PC, MacBook, or smartphone for comfortable and convenient learning.
NEW QUESTION # 13
A systems technician needs to install a third-party software package. Which of the following commands would allow the technician to download this software package from a remote server?
Answer: C
Explanation:
wget is specifically designed to download files from remote servers using HTTP, HTTPS, or FTP protocols, making it the appropriate command for retrieving software packages.
NEW QUESTION # 14
A Linux administrator needs to create accounts for a list of new users. The user account names have been defined in the USER_LIST variable by executing the following:
USER_LIST= " alice bob charles "
Which of the following commands should the administrator use to successfully create the user accounts?
Answer: C
Explanation:
The correct answer is D. for username in $USER_LIST; do useradd -m " $username " ; done because it correctly iterates through each value in the USER_LIST variable and executes the useradd command for each user. In Bash scripting, a for loop is the most appropriate and commonly used construct for iterating over a list of space-separated values stored in a variable.
The variable USER_LIST= " alice bob charles " contains three usernames separated by spaces. When used in a for loop, Bash automatically splits the string into individual words, assigning each value to the variable username during each iteration. The useradd -m command then creates a new user account and also generates a home directory for each user, which is standard practice in Linux system administration.
Option A is incorrect because the syntax is invalid; a while loop requires a conditional expression or a read statement to process input, which is missing here. Option B is also incorrect because until loops require a condition and are not suitable for iterating over lists in this way. Option C is incorrect because the select statement is used for interactive menu-based selection, not for non-interactive batch processing, and quoting
$USER_LIST would treat the entire string as a single item.
From a Linux+ perspective, understanding shell scripting constructs such as loops is essential for automation and user management tasks. The for loop provides a simple and efficient way to perform repetitive administrative operations, such as creating multiple user accounts, ensuring consistency and saving time in system provisioning.
NEW QUESTION # 15
Which of the following describes how a user's public key is used during SSH authentication?
Answer: A
Explanation:
During SSH public key authentication, the server checks if the user's public key is present in the
~/.ssh/authorized_keys file. If the key is found, the server uses it to verify the user's identity by sending a challenge that can only be answered by the corresponding private key. This process does not involve password hashing or using the public key directly for encryption of the communication stream. Instead, the public key is simply used as a reference for authentication.
NEW QUESTION # 16
A systems administrator wants to terminate all the processes owned by testuser on a Linux VM.
Which of the following should the administrator use for this task?
Answer: A
Explanation:
This command identifies all processes owned by the specified user by extracting their process IDs and then terminates each one, ensuring that all running processes belonging to that user are stopped.
NEW QUESTION # 17
A systems administrator is creating a backup copy of the /home/directory.
Which of the following commands allows the administrator to archive and compress the directory at the same time?
Answer: C
NEW QUESTION # 18
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