Free CompTIA XK0-004 Exam Dumps Questions & Answers

Which of the following is a difference between YAML and JSON?

• A.  YAML has been deprecated for JSON.
• B.  JSON is used in web development, while YAML is used solely in back-end systems.
• C.  Users can comment in YAML but not in JSON
• D.  JSON only curly brackets, while YAML only uses square brackets

An administrator is troubleshooting to determine why backups are failing on a particular server. The administrator runs the ps command and analyzes the following output.

The administrator runs kill -9 10112 yet the process remains.
Which of the following BEST describes the issue and how to fix it?

• A.  The backup process is still running and needs to be killed with kill -9 --force 10112.
• B.  The backup process is out of memory, and more memory needs to be added to the system.
• C.  The backup process is using 100% of system resources and needs to be rescheduled with renice.
• D.  The backup process is a zombie process, and the system needs to be rebooted.

A technician suspects a company's border firewall is down, thus blocking Internet access. The technician executes the following commands:
#ping -c 1 firewall.company.com
64 bytes from firewall.company.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.061ms
#ping -c 16 www.comptia.com
16 packets transmitted, 0 received, 100% packet loss, time 14999ms
Which of the following commands should the technician use to BEST determine the source of this outage?

• A.  dig
• B.  nmap
• C.  tcpdump
• D.  traceroute

A systems administrator downloads an application's source files, compiles the application, and installs it per the application's installation instructions. When trying to run the application, the system states:
$ occmd
bash: occmd: command not found...
Running the locate command shows it does exist in the following location:
/opt/occmd/bin/occmd
Which of the following should the administrator do to allow the command to run properly? (Choose two.)

• A.  mv /opt/occmd ~/ && ln -s ~/occmd/bin/occmd ./occmd
• B.  sudo mv /opt/occmd/bin/occmd /etc/bin/
• C.  echo "#!/bin/bash \n ${which occmd}" > /usr/bin/occmd.sh
• D.  echo "export PATH=$PATH:/opt/occmd/bin" >> ~/.bashrc
• E.  cd /opt/occmd/bin && chmod +x ./occmd && restorecon -rv *
• F.  sudo ln -s /opt/occmd/bin/occmd /usr/local/bin/occmd

A system administrator is troubleshooting a web server that runs in a container. After the log is retained, the container occasionally stops logging to a log file. Fortunately, the vendor provides a custom signal that allows the application to reconnect to the log file. Which of the following would be BEST for the administrator to run the containers?

• A.  Kill -Kill 1
• B.  Kill -TEAM 1
• C.  Kill -USR 1
• D.  Kill -HUP 1