CompTIA Linux+ Certification - XK0-004 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

An administrator wrote the following script, but it failed:

Which of the following is MOST likely the error in the script?

A. Line 4 should read: for line in $ { FILES} B. Line 6 should read: OWNER-'ls -1 ${LINE} I cut -d " " -f 1' C. Line 1 should read: #!/bin/sh D. Line 7 should read: echo '$(line) - S{OWNER)'

Discussion 0

Correct Answer: C Vote an answer

Question 2

During the final step of staging new Linux hardware, GRUB2 is installed to the system drive. Which of the following BEST describes the role of GRUB2 in a new Linux installation?

A. It provides a menu for creating administrator task shortcuts. B. It provides a menu for running special shell scripts. C. It provides a method to pass parameters to the Linux kernel on startup. D. It provides a method to partition a hard drive.

Discussion 0

Correct Answer: B Vote an answer

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Question 3

The dracut command is used to:

A. create the Boot Manager configuration files. B. compile the Linux kernel images used to boot the OS. C. create the bootloader executable files. D. create initial RAMDisk images for preloading modules.

Discussion 0

Correct Answer: D Vote an answer

Question 4

A Linux administrator tries to ping a hostname in a network but receives the message: hostname not found. The administrator is sure the name exists on the network and wants to verify if the DNS server is correctly configured on the client. Which of the following files should the administrator use to verify this information?

A. /etc/named.conf B. /etc/resolv.conf C. /etc/network D. /etc/nsswitch.conf

Discussion 0

Correct Answer: B Vote an answer

Question 5

A junior Linux administrator is trying to verify connectivity to the remote host host1 and display round-trip statistics for ten ICMP.
Which of the following commands should the administrator execute?

A. pathping -c 10 host1 B. netstat host1 C. ping -c 10 host1 D. traceroute -c 10 host1

Discussion 0

Correct Answer: C Vote an answer

Question 6

A Linux administrator needs to implement a secunty policy that prevents all connections from the marketing department that has the IP subnet 10.10.10.0/24 from reaching the current server. Which of the following commands can BEST accomplish this task?

A. iptables -A output -s 10.10.10.0/24 -j DROP B. iptables -A input -s 10.10.10.0/24 -j DROP C. iptables -A forward -s 10.10.10.0/24 -j ACCEPT D. iptables -A input -s 10.10.10.0/24 -j ACCEFT

Discussion 0

Correct Answer: D Vote an answer

Question 7

An administrator wants to be able to access a remote server. After creating an SSH key pair, which of the following describes where the public key should be placed to allow for key-based authentication?

A. -/.ssh/known_hosts B. -/ssh/id_ras.pub C. -/.ssh/config D. -/, ssh/authorized_keys

Discussion 0

Correct Answer: D Vote an answer

Question 8

A system ran out of storage space on a particular mount and will not allow anything to be written to disk. The df command shows there are 6GB free on the mount, and there is no inode exhaustion. This issue has happened before due to a known large log file that was not being rotated. The administrator remembers the file name but cannot remember the location of the log file or which process is writing to it. Which of the following would be the BEST solution to correct this issue while maintaining availability?

A. Use the ps command to find which process is writing to the log file, and then kill and restart the process B. Use the du command to find where the large log file is located and delete it C. Use the locate command to find where the large log file is located and delete it D. Use the lsof command to find where the large log file is located and truncate it

Discussion 0

Correct Answer: A Vote an answer

Question 9

Ann, a Linux administrator, is storing scripts in a private Git repository. Which of the following commands should Ann use to avoid entering the login and password every time Ann commits change?

A. Git config credential.help cache B. Git credential approve C. Echo authe n tapprove ''>> .git/config D. Git init shared-true

Discussion 0

Correct Answer: C Vote an answer