A Linux engineer set up two local DNS servers (10.10.10.10 and 10.10.10.20) and was testing email connectivity to the local mail server using the mail command on a local machine when the following error appeared: The local machine DNS settings are: Which of the following commands could the engineer use to query the DNS server to get mail server information?

dig @10.10.10.20 example.com mx

dig @example.com 10.10.10.20 ptr

dig @10.10.10.20 example.com ns

A systems administrator needs to check if the service systemd-resolved.service is running without any errors. Which of the following commands will show this information?

systemctl status systemd-resolved.service

systemctl enable systemd-resolved.service

systemctl mask systemd-resolved.service

systemctl show systemd-resolved.service

A Linux administrator is trying to remove the ACL from the file /home/user/dat a. txt but receives the following error message: Given the following analysis: Which of the following is causing the error message?

File attributes are preventing file modification.

The administrator is not using a highly privileged account.

The filesystem is mounted with the wrong options.

SELinux file context is denying the ACL changes.

File attributes are preventing file modification.

An administrator accidentally deleted the /boot/vmlinuz file and must resolve the issue before the server is rebooted. Which of the following commands should the administrator use to identify the correct version of this file?

rpm -qa | grep kernel; uname -a

cat /etc/centos-release; rpm -Uvh --nodeps

telinit 1; restorecon -Rv /boot

A Linux administrator needs to redirect all HTTP traffic temporarily to the new proxy server 192.0.2.25 on port 3128. Which of the following commands will accomplish this task?

iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.0.2.25:3128

iptables -t nat -D PREROUTING -p tcp --sport 80 -j DNAT - -to-destination 192.0.2.25:3128

iptables -t nat -A PREROUTING -p top --dport 81 -j DNAT --to-destination 192.0.2.25:3129

iptables -t nat -I PREROUTING -p top --sport 80 -j DNAT --to-destination 192.0.2.25:3129

iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.0.2.25:3128

Developers have requested implementation of a persistent, static route on the application server.Packets sent over the interface eth0 to 10.0.213.5/32 should be routed via 10.0.5.1. Which of the following commands should the administrator run to achieve this goal?

ip route add 10.0.213.5/32 via 10.0.5.1 dev eth0

route -i etho -p add 10.0.213.5 10.0.5.1

route modify eth0 +ipv4.routes "10.0.213.5/32 10.0.5.1"

echo "10.0.213.5 10.0.5.1 eth0" > /proc/net/route

ip route add 10.0.213.5/32 via 10.0.5.1 dev eth0

A systems administrator is troubleshooting connectivity issues and trying to find out why a Linux server is not able to reach other servers on the same subnet it is connected to. When listing link parameters, the following is presented: Based on the output above, which of following is the MOST probable cause of the issue?

The network interface cable is not connected to a switch.

The address ac:00:11:22:33:cd is not a valid Ethernet address.

The Ethernet broadcast address should be ac:00:11:22:33:ff instead.

The network interface eth0 is using an old kernel module.

The network interface cable is not connected to a switch.

A Linux administrator was asked to run a container with the httpd server inside. This container should be exposed at port 443 of a Linux host machine while it internally listens on port 8443. Which of the following commands will accomplish this task?

podman run -d -p 443:8443 httpd

podman run -d -p 8443:443 httpd

podman run -d -e 443:8443 httpd

When trying to log in remotely to a server, a user receives the following message: The server administrator is investigating the issue on the server and receives the following outputs: Which of the following is causing the issue?

The user has the wrong shell assigned to the account.

The wrong permissions are on the user's home directory.

The account was locked out due to three failed logins.

The user entered the wrong password.

The user has the wrong shell assigned to the account.

A systems administrator needs to reconfigure a Linux server to allow persistent IPv4 packet forwarding. Which of the following commands is the correct way to accomplish this task?

sysctl -w net.ipv4.ip_forward=1

echo 1 > /proc/sys/net/ipv4/ipv_forward

sysctl -w net.ipv4.ip_forward=1

firewall-cmd --enable ipv4_forwarding

systemctl start ipv4_forwarding

A Linux administrator would like to use systemd to schedule a job to run every two hours. The administrator creates timer and service definitions and restarts the server to load these new configurations. After the restart, the administrator checks the log file and notices that the job is only running daily. Which of the following is MOST likely causing the issue?

The OnCalendar schedule is incorrect in the timer definition.

The checkdiskspace.service is not running.

The checkdiskspace.service needs to be enabled.

The OnCalendar schedule is incorrect in the timer definition.

The system-daemon services need to be reloaded.

An administrator deployed a Linux server that is running a web application on port 6379/tcp.SELinux is in enforcing mode based on organization policies.The port is open on the firewall.Users who are trying to connect to a local instance of the web application receive Error 13, Permission denied.The administrator ran some commands that resulted in the following output: Which of the following commands should be used to resolve the issue?

semanage port -a -t http_port_t -p tcp 6379

semanage port -d -t http_port_t -p tcp 6379

semanage port -a -t http_port_t -p tcp 6379

semanage port -a http_port_t -p top 6379

semanage port -l -t http_port_tcp 6379

A systems administrator created a web server for the company and is required to add a tag for the API so end users can connect. Which of the following would the administrator do to complete this requirement?

hostnamectl set-hostname Comptia-WebNode -H root@192.168.2.14

hostnamectl status --no-ask-password

hostnamectl set-hostname "$(perl -le "print" "A" x 86)"

hostnamectl set-hostname Comptia-WebNode -H root@192.168.2.14

hostnamectl set-hostname Comptia-WebNode --transient

A systems administrator wants to back up the directory /data and all its contents to /backup/data on a remote server named remote. Which of the following commands will achieve the desired effect?

scp -p /data remote:/backup/data

An administrator needs to make some changes in the IaC declaration templates. Which of the following commands would maintain version control?

git clone https://github.com/comptia/linuxt+-.gitgit checkout -b <new-branch>

git clone https://github.com/comptia/linux+-.gitgit push origin

git clone https://qithub.com/comptia/linux+-.gitgit fetch New-Branch

git clone https://github.com/comptia/linux+-.gitgit status

git clone https://github.com/comptia/linuxt+-.gitgit checkout -b <new-branch>

A Linux administrator is troubleshooting SSH connection issues from one of the workstations.When users attempt to log in from the workstation to a server with the IP address 104.21.75.76, they receive the following message: The administrator reviews the information below: Which of the following is causing the connectivity issue?

The server's firewall is preventing connections from being made.

The workstation has the wrong IP settings.

The server's firewall is preventing connections from being made.

The server has an incorrect default gateway configuration.

Which of the following files holds the system configuration for journal when running systemd?

/etc/systemd/systemd-journalctl.conf

/usr/lib/systemd/journalctl.conf

/etc/systemd/systemd-journald.conf

CompTIA XK0-005 Practice Test 1 - Free Online Exam Prep & Questions

Question 1 / 40

A Linux administrator is scheduling a system job that runs a script to check available disk space every hour. The Linux administrator does not want users to be able to start the job. Given the following:

CompTIA XK0-005 image Question 1 99642 10022024175436000000

The Linux administrator attempts to start the timer service but receives the following error message:

CompTIA XK0-005 image Question 1 99642 10022024175436000000

Which of the following is MOST likely the reason the timer will not start?

The checkdiskspace.timer unit should be enabled via systemctl.

The timers.target should be reloaded to get the new configuration.

The checkdiskspace.timer should be configured to allow manual starts.

The checkdiskspace.timer should be started using the sudo command.

Comment (0)

CompTIA XK0-005 Practice Test 1

Question

CompTIA XK0-005 Practice Tests

Practice Tests