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CompTIA
Exam Questions XK0-006
CompTIA Linux+ Exam
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NEW QUESTION 1
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. resolvectl
B. journalctl
C. systemctl daemon-reload
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 toolsare required.
The correct command issystemd-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 isD.
NEW QUESTION 2
An administrator must secure an account for a user who is going on extended leave. Which of the following steps should the administrator take?(Choose two)
A. Set the user's files to immutable.
B. Instruct the user to log in once per week.
C. Delete the user's /home folder.
D. Run the command passwd -l user.
E. Change the date on the /home folder to that of the expected return date.
F. Change the user's shell to /sbin/nologin.
Answer: DF
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From Linux+ V8 documents:
Securing dormant or temporarily unused user accounts is a best practice emphasized in theSecuritydomain of CompTIA Linux+ V8. When a user goes on
extended leave, the goal is toprevent unauthorized accesswhile preserving the user??s data and account for future use.
The most effective approach is todisable authentication and interactive login accesswithout deleting the account. OptionD, running passwd -l user, locks the
user??s password by prepending an invalid character to the encrypted password in /etc/shadow. This prevents password-based authentication while retaining the
account, files, and ownership information. Linux+ V8 documentation highlights password locking as a standard method for temporarily disabling accounts.
OptionF, changing the user??s shell to /sbin/nologin, further strengthens account security by preventing interactive shell access entirely. Even if another
authentication mechanism were attempted, the user would be denied a login shell. This is a common defense-in-depth measure and is explicitly referenced in
Linux+ V8 objectives for access control and account hardening.
The other options are incorrect or inappropriate. OptionA(immutable files) does not prevent account access and may interfere with system operations.
OptionBdefeats the purpose of securing an inactive account. OptionCdeletes user data, which is unnecessary and risky. OptionEhas no security effect, as
filesystem timestamps do not control access.
Linux+ V8 stresses that secure account management should bereversible, auditable, and minimally disruptive. Locking the password and disabling the login shell
meet these criteria and are commonly used together in enterprise environments.
NEW QUESTION 3
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/whois.conf
B. /etc/resolv.conf
C. /etc/nsswitch.conf
D. /etc/dnsmasq.conf
Answer: B
Explanation:
DNS client configuration is a foundational Linux networking task covered in Linux+ V8 system management objectives. When an administrator needs to specify the
IP address of a DNS server that the system should use for name resolution, the correct file to modify is/etc/resolv.conf.
The /etc/resolv.conf file defines DNS resolver settings, including one or more nameserver entries that specify the IP addresses of DNS servers. Applications and
system services rely on this file to resolve hostnames to IP addresses.
The other options are incorrect. /etc/whois.conf configures WHOIS queries. /etc/nsswitch.conf controls the order of name resolution sources but does not define
DNS server IP addresses. /etc/dnsmasq.conf configures a local DNS caching service, not the system-wide resolver directly.
Linux+ V8 documentation highlights /etc/resolv.conf as the authoritative DNS client configuration file, though it may be dynamically managed by tools such as
NetworkManager or systemd-resolved.
Therefore, the correct answer isB. /etc/resolv.conf.
NEW QUESTION 4
An administrator receives reports that a web service is not responding. The administrator reviews the following outputs:
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https://www.surepassexam.com/XK0-006-exam-dumps.html (82 New Questions)
CompTIA
Exam Questions XK0-006
CompTIA Linux+ Exam
Passing Certification Exams Made Easy visit - https://www.surepassexam.com
, Recommend!! Get the Full XK0-006 dumps in VCE and PDF From SurePassExam
https://www.surepassexam.com/XK0-006-exam-dumps.html (82 New Questions)
NEW QUESTION 1
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. resolvectl
B. journalctl
C. systemctl daemon-reload
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 toolsare required.
The correct command issystemd-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 isD.
NEW QUESTION 2
An administrator must secure an account for a user who is going on extended leave. Which of the following steps should the administrator take?(Choose two)
A. Set the user's files to immutable.
B. Instruct the user to log in once per week.
C. Delete the user's /home folder.
D. Run the command passwd -l user.
E. Change the date on the /home folder to that of the expected return date.
F. Change the user's shell to /sbin/nologin.
Answer: DF
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From Linux+ V8 documents:
Securing dormant or temporarily unused user accounts is a best practice emphasized in theSecuritydomain of CompTIA Linux+ V8. When a user goes on
extended leave, the goal is toprevent unauthorized accesswhile preserving the user??s data and account for future use.
The most effective approach is todisable authentication and interactive login accesswithout deleting the account. OptionD, running passwd -l user, locks the
user??s password by prepending an invalid character to the encrypted password in /etc/shadow. This prevents password-based authentication while retaining the
account, files, and ownership information. Linux+ V8 documentation highlights password locking as a standard method for temporarily disabling accounts.
OptionF, changing the user??s shell to /sbin/nologin, further strengthens account security by preventing interactive shell access entirely. Even if another
authentication mechanism were attempted, the user would be denied a login shell. This is a common defense-in-depth measure and is explicitly referenced in
Linux+ V8 objectives for access control and account hardening.
The other options are incorrect or inappropriate. OptionA(immutable files) does not prevent account access and may interfere with system operations.
OptionBdefeats the purpose of securing an inactive account. OptionCdeletes user data, which is unnecessary and risky. OptionEhas no security effect, as
filesystem timestamps do not control access.
Linux+ V8 stresses that secure account management should bereversible, auditable, and minimally disruptive. Locking the password and disabling the login shell
meet these criteria and are commonly used together in enterprise environments.
NEW QUESTION 3
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/whois.conf
B. /etc/resolv.conf
C. /etc/nsswitch.conf
D. /etc/dnsmasq.conf
Answer: B
Explanation:
DNS client configuration is a foundational Linux networking task covered in Linux+ V8 system management objectives. When an administrator needs to specify the
IP address of a DNS server that the system should use for name resolution, the correct file to modify is/etc/resolv.conf.
The /etc/resolv.conf file defines DNS resolver settings, including one or more nameserver entries that specify the IP addresses of DNS servers. Applications and
system services rely on this file to resolve hostnames to IP addresses.
The other options are incorrect. /etc/whois.conf configures WHOIS queries. /etc/nsswitch.conf controls the order of name resolution sources but does not define
DNS server IP addresses. /etc/dnsmasq.conf configures a local DNS caching service, not the system-wide resolver directly.
Linux+ V8 documentation highlights /etc/resolv.conf as the authoritative DNS client configuration file, though it may be dynamically managed by tools such as
NetworkManager or systemd-resolved.
Therefore, the correct answer isB. /etc/resolv.conf.
NEW QUESTION 4
An administrator receives reports that a web service is not responding. The administrator reviews the following outputs:
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