NEW XK0-005 EXAM DURATION - NEW XK0-005 EXAM NOTES

New XK0-005 Exam Duration - New XK0-005 Exam Notes

New XK0-005 Exam Duration - New XK0-005 Exam Notes

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CompTIA Linux+ Certification Exam Sample Questions (Q73-Q78):

NEW QUESTION # 73
A cloud engineer needs to block the IP address 192.168.10.50 from accessing a Linux server.
Which of the following commands will achieve this goal?

  • A. iptables -j INPUT 192.168.10.50 -p DROP
  • B. iptables -F INPUT -j 192.168.10.50 -m DROP
  • C. iptables -i INPUT --ipv4 192.168.10.50 -z DROP
  • D. iptables -A INPUT -s 192.168.10.50 -j DROP

Answer: D

Explanation:
The correct command to block the IP address 192.168.10.50 from accessing a Linux server is:
iptables -A INPUT -s 192.168.10.50 -j DROP
This command appends a rule to the INPUT chain that matches the source address
192.168.10.50 and jumps to the DROP target, which discards the packet. The other commands are incorrect because they either have invalid syntax, wrong parameters, or wrong order of arguments.


NEW QUESTION # 74
A user is asking the systems administrator for assistance with writing a script to verify whether a file exists.
Given the following:

Which of the following commands should replace the <CONDITIONAL> string?

  • A. if [ -f "$filename" ] then
  • B. if [ -d "$filename" ]; then
  • C. if [ -f "$filename" ]; while
  • D. if [ -f "$filename" ]; then

Answer: D

Explanation:
The command if [ -f "$filename" ]; then checks if the variable $filename refers to a regular file that exists.
The -f option is used to test for files. If the condition is true, the commands after then are executed. This is the correct way to replace the <CONDITIONAL> string. The other options are incorrect because they either use the wrong option (-d tests for directories), the wrong syntax (missing a semicolon after the condition), or the wrong keyword (while is used for loops, not conditions). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 16: Writing and Executing Bash Shell Scripts, page 493.


NEW QUESTION # 75
A systems administrator wants to ensure all the latest patches and updates are automatically synced to the local repository every two hours on Sundays through Tuesdays in the month of May. Which of the following cron entries can the administrator use to achieve this goal? (Choose two.)

  • A. 0 0-23/2 * 5 0-2 /root/update-from-remote-to-local.sh
  • B. 0 */2 * 5 0-3 /root/update-from-remote-to-local.sh
  • C. 0 0,2,4,6,8,10,12,14 * 5 0-2 /root/update-from-remote-to-local.sh
  • D. 0 */2 * 5 0-2 /root/update-from-remote-to-local.sh
  • E. 0 0-23/2 * 5 0-3 /root/update-from-remote-to-local.sh
  • F. 0 0,2,4,6,8,10,12,14 * 5 0-3 /root/update-from-remote-to-local.sh

Answer: A


NEW QUESTION # 76
A new drive was recently added to a Linux system. Using the environment and tokens provided, complete the following tasks:
* Create an appropriate device label.
* Format and create an ext4 file system on the new partition.
The current working directory is /.

Answer:

Explanation:

Explanation:

To create an appropriate device label, format and create an ext4 file system on the new partition, you can use the following commands:
* To create a GPT (GUID Partition Table) label on the new drive /dev/sdc, you can use the parted command with the -s option (for script mode), the device name (/dev/sdc), the mklabel command, and the label type (gpt). The command is:
parted -s /dev/sdc mklabel gpt
* To create a primary partition of 10 GB on the new drive /dev/sdc, you can use the parted command with the -s option, the device name (/dev/sdc), the mkpart command, the partition type (primary), the file system type (ext4), and the start and end points of the partition (1 and 10G). The command is:
parted -s /dev/sdc mkpart primary ext4 1 10G
* To format and create an ext4 file system on the new partition /dev/sdc1, you can use the mkfs command with the file system type (ext4) and the device name (/dev/sdc1). The command is:
mkfs.ext4 /dev/sdc1
You can verify that the new partition and file system have been created by using the lsblk command, which will list all block devices and their properties.


NEW QUESTION # 77
An administrator wants to execute a long-running script in the terminal while troubleshooting another issue.
Which of the following options will achieve this goal?

  • A. sh script.sh | jobs
  • B. nice -10 ./script.sh
  • C. bash script.sh &
  • D. source script.sh

Answer: C

Explanation:
Running a command with & at the end sends it to the background, allowing the administrator to continue using the terminal for other tasks while the script runs. This is useful for long-running scripts that do not require immediate attention but need to keep running.


NEW QUESTION # 78
......

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