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CompTIA XK0-005 Latest Material - Realistic CompTIA Linux+ Certification Exam Online Version

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XK0-005 Exam Questions: CompTIA Linux+ Certification Exam & XK0-005 Exam Preparation

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CompTIA Linux+ Certification Exam Sample Questions (Q209-Q214):

NEW QUESTION # 209
Which of the following should a company use to reduce the latency of application that are deployed on a virtual private cloud?

A. Network address translation
B. Virtual load balancer
C. Multi-availability zones
D. Direct connect

Answer: B

NEW QUESTION # 210
A Linux administrator needs to remove all local firewall rules on a Linux system. Which of the following commands should the administrator run?

A. iptables -D
B. iptables -L
C. iptables -F
D. iptables -A

Answer: C

Explanation:
The iptables -F command flushes all the firewall rules, effectively removing them from the system.
This command clears out all existing rules from all chains (INPUT, OUTPUT, and FORWARD), leaving the system with no active iptables rules.

NEW QUESTION # 211
A user requested a USB serial device to be added to a desktop computer. The device has built-in kernel driver support. The administrator tested the device installation and access, but the user cannot access the serial port. Each time the user attempts to access the device, an error log is created that shows the user does not have permission to use the serial port. Which of the following will add a user to the group that has serial port capabilities?

A. usermod -a -G dialout $USER
B. usermod -a -G root $USER
C. usermod -a -G modem $USER
D. usermod -a -G serialport $USER

Answer: A

Explanation:
dialout group: Full and direct access to serial ports. Members of this group can reconfigure the modem, dial anywhere, etc.

NEW QUESTION # 212
A security team discovers that a web server has been running with elevated privileges and identifies it as a security violation. Which of the following items needs to be added to the webserver.service file to remediate the issue?

A. In the [Service] section of the webserver.service file, add User=comptia.
B. Add After=network.target to the [Install] section of the webserver.service file.
C. In the [Install] section of the webserver.service file, add WantedBy=single.target.
D. In the [Unit] section of the webserver.service file, add AllowIsolate=true.

Answer: A

Explanation:
Adding User=comptia in the [Service] section ensures that the web server runs as a non-root user, which enhances security by reducing the risk of elevated privileges being exploited. This follows the principle of least privilege, a best practice for system services.

NEW QUESTION # 213
A Linux administrator is working on a system and notices that some of the packages are not at the latest version. Which of the following commands should the administrator use to correct this issue?

A. dnt update
B. dpkg --update
C. rpm --update
D. apt update

Answer: D

Explanation:
The apt update command updates the package lists for repositories but does not upgrade installed packages.
After apt update, the administrator should run apt upgrade to install the latest versions of all packages.

NEW QUESTION # 214
......

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Harry Lee Harry Lee

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