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XK0-005 Practice Exam Questions and Answers

CompTIA Linux+ Exam

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Total Questions : 376

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Question # 1

A Linux administrator needs to determine whether a hostname is in the DNS. Which of the following would supply the information that is needed?

Options:

A.  

nslookup

B.  

rsynс

C.  

netstat

D.  

host

Discussion 0
Question # 2

Using AD Query, the security gateway connections to the Active Directory Domain Controllers using what protocol?

Options:

A.  

Windows Management Instrumentation (WMI)

B.  

Hypertext Transfer Protocol Secure (HTTPS)

C.  

Lightweight Directory Access Protocol (LDAP)

D.  

Remote Desktop Protocol (RDP)

Discussion 0
Question # 3

A junior Linux administrator is tasked with installing an application. The installation guide states the application should only be installed in a run level 5 environment.

Question # 3

Which of the following commands would ensure the server is set to runlevel 5?

Options:

A.  

systemct1 isolate multi-user.target

B.  

systemct1 isolate graphical.target

C.  

systemct1 isolate network.target

D.  

systemct1 isolate basic.target

Discussion 0
Question # 4

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

Options:

A.  

/etc/systemd/journald.conf

B.  

/etc/systemd/systemd-journalctl.conf

C.  

/usr/lib/systemd/journalctl.conf

D.  

/etc/systemd/systemd-journald.conf

Discussion 0
Question # 5

A Linux administrator is troubleshooting an issue in which an application service failed to start on a Linux server. The administrator runs a few commands and gets the following outputs:

Question # 5

Based on the above outputs, which of the following is the MOST likely action the administrator should take to resolve this issue?

Options:

A.  

Enable the logsearch.service and restart the service.

B.  

Increase the TimeoutStartUSec configuration for the logsearch.sevice.

C.  

Update the OnCalendar configuration to schedule the start of the logsearch.service.

D.  

Update the KillSignal configuration for the logsearch.service to use TERM.

Discussion 0
Question # 6

A Linux administrator would like to measure possible packet loss between a workstation and a remote web application that is running on port 443. Which of the following would be the best command for the administrator to use to display this information?

Options:

A.  

ping -c 50

B.  

tcpdump -p 443

C.  

mtr -T -P 443

D.  

traceroute -p 443

Discussion 0
Question # 7

A user is cleaning up a directory because it has more than 100,000 files that were generated from an experiment. When the user tries to remove the unneeded experiment files, the user receives an error:

arduino

cannot execute [Argument list too long]

Which of the following should the user execute to remove these files?

Options:

A.  

find . -name "experiment*.txt" -exec rm "{}" ;

B.  

rm -rf experiment*.txt

C.  

rm --force experiment*.txt

D.  

for i in experiment*.txt; do find . -name $i -exec rmdir "{}" ; done

Discussion 0
Question # 8

A Linux administrator needs to expose port 9000 for a container to listen during runtime. The Linux administrator creates a Dockerfile with the following entries:

sql

FROM node:9-alpine

WORKDIR /usr/src/app

COPY package.json ./

RUN npm install

COPY . .

EXPOSE 9000

CMD ["npm", "start"]

Which of the following commands should the administrator use to accomplish this task? (Select two).

Options:

A.  

docker build -t Test-Container

B.  

docker tag Test-Container

C.  

docker inspect Test-Container

D.  

docker run -p 5000:80 Test-Container

E.  

docker push Test-Container

F.  

docker run -p 80:9000 Test-Container

Discussion 0
Question # 9

The MySQL database process that was running on a Linux server suddenly stopped, and the process was killed. Which of the following commands can help identify whether this issue was produced by the OOM killer?

Options:

A.  

grep /proc/oom_score

B.  

grep -ir "out of memory" /var/log

C.  

cat /var/run/initramfs/overlayroot.log | grep "out of memory"

D.  

cat /sys/block/loop0/events

Discussion 0
Question # 10

A systems administrator is encountering performance issues. The administrator runs 3 commands with the following output

Question # 10

The Linux server has the following system properties

CPU: 4 vCPU

Memory: 50GB

Which of the following accurately describes this situation?

Options:

A.  

The system is under CPU pressure and will require additional vCPUs

B.  

The system has been running for over a year and requires a reboot.

C.  

Too many users are currently logged in to the system

D.  

The system requires more memory

Discussion 0
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