CompTIA CompTIA Certifications XK0-004 Questions & Answers

• Question 221:

  Which of the following is a file that can define how to build deploy, and install various components for a Linux application hosted in a cloud environment?

  A. OVF

  B. YAML

  C. Virsh

  D. VMM

  Correct Answer: A

  File that can define how to build deploy, and install various components for a Linux application hosted in a cloud environment

• Question 222:

  Which of the following should a systems administrator use to run the uptime command every ten seconds?

  A. crontab -n10 uptime

  B. watch -n10 uptime

  C. uptime -s10

  D. cron -s10 uptime

  E. time -x10 uptime

  Correct Answer: B

  Reference: https://www.tecmint.com/run-repeat-linux-command-every-x-seconds/

• Question 223:

  A network administrator requested a change in workstation routing to a new access point.

  Which of the following will display the current settings for wlan0 and set the new access point name to lab?

  A. iwconfig, iwconfig essid "lab"

  B. iwconfig wlan0, iwconfig essid lab

  C. iwconfig, iwconfig wlan0 ap="lab"

  D. iwconfig wlan0 display, iwconfig wlan0 essid="lab"

  Correct Answer: D

  Reference: https://www.rapid7.com/blog/post/2013/05/22/easily-assessing-wireless-networks-with-kali-linux/

• Question 224:

  When a developer commits to a product's master branch, it has a tool that checks code syntax compiles the software, performs unit tests, and outputs an RPM file as an artifact. Which of the following is this an example of?

  A. Inventory

  B. Build automation

  C. Attributes

  D. Agent

  Correct Answer: B

  Reference: https://en.wikipedia.org/wiki/Build_automation

• Question 225:

  A Linux administrator needs to copy the log files and all the subdirectories in /var/log/archive to the /log/backups/ directory on a remote server at backup.example.com. The administrator will use the archive user account to access the remote server.

  Which of the following commands will do this?

  A. scp -r /var/log/archive [email protected]:/log/backups

  B. scp -r /var/log/archive backup.example.com:/log/backups

  C. scp /var/log/archive/* [email protected]:/log/backups

  D. scp -r backup.example.com:/log/backups /var/log/archive

  Correct Answer: C

• Question 226:

  A server administrator is attempting to reserve the IP address of 10.0.0.51 for a Linux workstation named PC-10021 using a Windows DHCP service. However, after several reboots, the workstation is not receiving the reserved address. The administrator checks the DHCP leases and sees the following entry:

  

  Which of the following should the administrator do to ensure the Linux workstation uses the proper reservation address?

  A. Specify the MAC address in the Windows DHCP reservation as the first 16 characters of the MAC address listed in the existing lease

  B. Create the file /etc/dhcp/dhclient.conf on the workstation and add the entry send: dhcp-client-identifier = hardware;

  C. Disable IPv6 on the Linux Ethernet adapter and change the settings in NetworkManager to Automatic (Address Only) under the IPv4 setting

  D. Edit the interface connection in NetworkManager and manually specify the MAC address of 1C:83:C3:46:4D:3E:7F:8C

  Correct Answer: B

  Reference: https://bugzilla.redhat.com/show_bug.cgi?id=560361

• Question 227:

  A systems administrator discovers httpd is running and preventing another application service from listening on the default web port. The administrator stops and disables the httpd service and then the application works. The administrator, however, discovers httpd is running again after reboot.

  Given this behavior, which of the following will prevent httpd from starting on boot?

  A. systemctl mask httpd

  B. systemctl blame httpd

  C. systemctl disable httpd

  D. systemctl stop httpd

  Correct Answer: C

  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/chap-managing_services_with_systemd

• Question 228:

  Joe, a Linux administrator implemented an IP blocking solution to secure a server, but he is now unable to connect to the server from the office. Which of the following should Joe review to determine if the office desktop was blocked by this solution?

  A. journalctl

  B. /etc/ufw

  C. dmesg

  D. /var/log/audit

  E. /etc/hosts.deny

  Correct Answer: E

• Question 229:

  A senior administrator keeps an important server turned off most of the time for security reasons. The server is booted for one specific function, then turned off again. Which of the following server types is described in this scenario?

  A. Proxy server

  B. Certificate authority

  C. Cloud access security broker

  D. File server

  Correct Answer: B

  Reference: https://docs.microsoft.com/en-us/windows-server/networking/core-network-guide/cncg/server-certs/server-certificate-deployment-overview

• Question 230:

  A Linux administrator's account has the following privileges:

  

  The administrator tried to install the vim package and received the following output:

  

  Which of the following is the BEST solution to resolve this issue?

  A. Install the python2 package as root on the operating system

  B. Execute sed -i "s/NOEXEC/EXEC/g" /etc/sudoers.d/admin as root

  C. Execute groupmod -a -G wheel admin as root

  D. Execute sudo chmod 755 /usr/bin/yum

  Correct Answer: B