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XK0-006 Reliable Test Sample, XK0-006 Cost Effective Dumps

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XK0-006 Reliable Test Sample, XK0-006 Cost Effective Dumps

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CompTIA Linux+ Certification Exam Sample Questions (Q81-Q86):NEW QUESTION # 81
A systems administrator wants to review the amount of time the NetworkManager service took to start. Which of the following commands accomplishes this goal?
  • A. journalctl
  • B. systemctl daemon-reload
  • C. resolvectl
  • D. systemd-analyze blame
Answer: D
Explanation:
System boot performance analysis is an important system management task included in Linux+ V8. When administrators need to determine how long services take to start during boot, systemd analysis tools are required.
The correct command is systemd-analyze blame. This command lists all systemd services and shows how long each one took to initialize during the boot process. It is commonly used to identify slow-starting services that may impact system startup performance, including NetworkManager.
The other options are incorrect. resolvectl is used for DNS resolution management and provides no service timing information. journalctl can display logs but does not provide a clear, summarized service startup timing report. systemctl daemon-reload only reloads systemd unit files and does not perform analysis.
Linux+ V8 documentation explicitly references systemd-analyze blame as the correct tool for diagnosing service startup delays. Therefore, the correct answer is D.

NEW QUESTION # 82
An administrator completes maintenance on a server but cannot remount the logical volume.
Given the following output:

Which of the following commands should the administrator execute to resolve the issue?
  • A. lvchange -ay /dev/data/files
  • B. vgimport data
  • C. lvscan --all
  • D. vgchange -ay data
Answer: D
Explanation:
The error message "special device /dev/data/files does not exist" suggests that the volume group data is not activated. From the lvsand vgsoutput:
- The logical volume files exists within the data volume group.
- The volume group (VG) and logical volume (LV) appear correctly listed, but they might be in an inactive state due to maintenance.

NEW QUESTION # 83
A systems administrator needs to set the IP address of a new DNS server. Which of the following files should the administrator modify to complete this task?
  • A. /etc/resolv.conf
  • B. /etc/whois.conf
  • C. /etc/nsswitch.conf
  • D. /etc/dnsmasq.conf
Answer: A
Explanation:
The /etc/resolv.conf file defines DNS resolver settings, including the IP addresses of DNS servers that the system should use for hostname resolution.

NEW QUESTION # 84
Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?
  • A. PKI certificates
  • B. LUKS
  • C. GPG
  • D. OpenSSL
Answer: B
Explanation:
Disk encryption is a key Linux+ V8 security objective, especially for protecting data at rest. LUKS (Linux Unified Key Setup) is the standard Linux framework for full-disk and partition-level encryption.
Option B is correct. LUKS provides strong encryption for storage devices, ensuring that data remains unreadable when the system is powered off or the disk is removed. It integrates with tools like cryptsetup and supports key management, passphrases, and multiple unlock methods.
The other options are incorrect. GPG encrypts files, not entire disks. PKI certificates are used for identity and trust, not disk encryption. OpenSSL is a cryptographic library, not a disk encryption mechanism.
Linux+ V8 documentation explicitly identifies LUKS as the primary solution for disk encryption on Linux systems. Therefore, the correct answer is B.

NEW QUESTION # 85
Which of the following is a protocol for accessing distributed directory services containing a hierarchy of users, groups, machines, and organizational units?
  • A. SMB
  • B. LDAP
  • C. TLS
  • D. KRB-5
Answer: B
Explanation:
Directory services are a key part of enterprise Linux environments and are covered under the Security domain in Linux+ V8. The Lightweight Directory Access Protocol (LDAP) is specifically designed to access and manage distributed directory information.
LDAP directories store structured, hierarchical data such as users, groups, computers, and organizational units. Linux systems commonly use LDAP for centralized authentication, authorization, and identity management. LDAP is also the foundation for services like Active Directory and FreeIPA.
The other options are incorrect. SMB is a file and printer sharing protocol. TLS is an encryption protocol used to secure communications. Kerberos (KRB-5) is an authentication protocol often used alongside LDAP but does not store directory information itself.
Linux+ V8 documentation highlights LDAP as the primary protocol for directory-based identity services.
Therefore, the correct answer is C.

NEW QUESTION # 86
......
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