Free CompTIA XK0-004 Exam Dumps Questions & Answers

When requesting SSH access to a remote system, a user accidentally emailed the id_rsa key to the administrator. Which of the following should the user do NEXT?

• A.Delete id_rsa key file and send the id_rsa.pub key file instead.
• B.Ask the administrator to run chmod 600 id_rsa on the remote system.
• C.Stop using that key and run ssh-keygen to generate a new key pair.
• D.Run the ssh-add command to add the remote system to known_hosts.

A Linux system is running normally when the systems administrator receives an alert that one application spawned many processes. The application is consuming a lot of memory, and it will soon cause the machine to become unresponsive. Which of the following commands will stop each application process?

• A.kill 'pidof application'
• B.pkill -9 application
• C.kill -9 'ps -aux | grep application'
• D.killall application

An administrator is writing a Bash script that contains a loop that increments the value of the variable count with each loop iteration by 1. Which of the following should the administrator use?

• A.$count++
• B.Count='expr $count+1'
• C.Count = $conunt+1
• D.((++count))

A systems administrator is using a Linux laptop to troubleshoot network devices. The administrator runs the following command:
# screen /dev/USB0
Which of the following does this command MOST likely accomplish?

• A.It logs all troubleshooting output from the monitor to external USB0 storage.
• B.It monitors USB0 waiting for a network device to be connected to it as an Ethernet device.
• C.It allows the administrator to interact with the character device connected to USB0.
• D.It copies the network traffic from the device connected to USB0 and screens out rejected traffic.

A Linux systems administrator is implementing Source Code Management for the web application server configuration files located in /etc/httpd/. Which of the following steps should the administrator perform FIRST?

• A.Configure the directory for git using 'git config'
• B.Create a new repository using 'git init'
• C.Retrieve the remote changes using 'git commit'
• D.Clone the remote repository using 'git clone'