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XK0-006 Valid Test Braindumps & Latest XK0-006 Dumps Questions

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CompTIA Linux+ Certification Exam Sample Questions (Q56-Q61):

NEW QUESTION # 56
Which of the following best describes the role of initrd?

A. It is required to connect to the system via SSH.
B. It contains basic kernel modules and drivers required to start the system.
C. It is required to initialize a random device within a Linux system.
D. It contains trusted certificates and secret keys of the system.

Answer: B

Explanation:
initrd (initial ramdisk) provides essential kernel modules and drivers (e.g., for storage and filesystems) needed during the early boot process before the root filesystem is mounted.

NEW QUESTION # 57
A user sends a request to access a virtual server via SSH. Which of the following commands is used to open the SSH standard port?

A. firewalld-cmd --remove-service=ssh --permanent
B. iptables -A INPUT -p tcp --dport sshd -j ACCEPT
C. firewalld-cmd --permanent --add-port=22/tcp
D. iptables-save | grep dport-22/tcp

Answer: C

Explanation:
The firewalld-cmd --permanent --add-port=22/tcpcommand (commonly
firewall-cmd) opens TCP port 22 in the permanent firewalld ruleset so that SSH traffic is allowed. After running it, you'd issue firewall-cmd --reloadto apply the change.

NEW QUESTION # 58
Which of the following commands should an administrator use to convert a KVM disk file to a different format?

A. qemu-kvm
B. qemu-ng
C. qemu-io
D. qemu-img

Answer: D

Explanation:
The qemu-img command is used to create, convert, and manage disk image files for KVM/QEMU. It allows conversion between formats such as qcow2, raw, and vmdk.

NEW QUESTION # 59
A systems administrator needs to open the DNS TCP port on a Linux system from network
10.0.0.0/24. Which of the following commands should the administrator use for this task?

A. ufw disable from 10.0.0.0/24
B. ufw enable 53/tcp from 10.0.0.0/24
C. ufw allow 53/tcp from 10.0.0.0/24
D. ufw allow dns/tcp to 10.0.0.0/24

Answer: C

Explanation:
The ufw allow 53/tcp from 10.0.0.0/24 command explicitly opens TCP port 53 (DNS) for connections coming from the 10.0.0.0/24 network, which is the correct way to configure this firewall rule.

NEW QUESTION # 60
An administrator receives the following output while attempting to unmount a filesystem:
umount /data1: target is busy.
Which of the following commands should the administrator run next to determine why the filesystem is busy?

A. top -d /data1
B. lsof | grep /data1
C. du -sh /data1
D. ps -f /data1

Answer: B

Explanation:
The lsof command lists open files and the processes using them. Running lsof | grep /data1 will show which processes are keeping the /data1 filesystem busy, preventing it from being unmounted.

NEW QUESTION # 61
......

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