XK0-005 practice questions 51–60

1. Question 51 · 300 in bank

   A cloud engineer needs to launch a container named web-01 in background mode. Which of the following commands will accomplish this task?

   • Adocker builder -f --name web-01 httpd
   • Bdocker load --name web-01 httpd
   • Cdocker ps -a --name web-01 httpd
   • Ddocker run -d --name web-01 httpd

   Show answer

   Answer: D

   Explanation

   D. docker run -d --name web-01 httpd Explanation: docker run command is used to create and run a container based on a specified image. The -d option is used to start the container in the background (detached mode). The --name web-01 option is used to set the name of the container to web-01. httpd is the name of the image that the container will be based on.

   Source: Adapted from community discussion — linux_admin

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2. Question 52 · 300 in bank

   A Linux administrator is providing a new Nginx image from the registry to local cache. Which of the following commands would allow this to happen?

   • Adocker pull nginx
   • Bdocker attach nginx
   • Cdocker commit nginx
   • Ddocker import nginx

   Show answer

   Answer: A

   Explanation

   A. docker pull nginx Explanation: docker pull command is used to pull an image from a registry and store it in the local Docker image cache. nginx is the name of the image that will be pulled.

   Source: Adapted from community discussion — linux_admin

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3. Question 53 · 300 in bank

   Which of the following tools is BEST suited to orchestrate a large number of containers across many different servers?

   • AKubernetes
   • BAnsible
   • CPodman
   • DTerraform

   Show answer

   Answer: A

   Explanation

   Kubernetes is a container orchestration platform that automates the deployment, scaling, and management of containerized applications. It is designed to work with large numbers of containers and servers, providing features such as load balancing, automatic scaling, self-healing, and rolling updates. Kubernetes provides a flexible and scalable platform for managing containerized workloads, whether they are running on-premises or in the cloud.

   Source: Adapted from community discussion — linux_admin

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4. Question 54 · 300 in bank

   A Linux administrator is installing a web server and needs to check whether web traffic has already been allowed through the firewall. Which of the following commands should the administrator use to accomplish this task?

   • Afirewalld query-service-http
   • Bfirewall-cmd --check-service http
   • Cfirewall-cmd --query-service http
   • Dfirewalld --check-service http

   Show answer

   Answer: C

   Explanation

   Correct answer option C. This command queries the firewall daemon (firewalld) to check if the "http" service is currently enabled in the firewall. If the service is enabled, the command will return "yes"; otherwise, it will return "no".

   Source: Adapted from community discussion — post20

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5. Question 55 · 300 in bank

   A systems administrator is encountering performance issues. The administrator runs a command with the following output: 09:10:18 up 457 days, 32min, 5 users, load average: 4.22 6.63 5.58 The Linux server has the following system properties: CPU 4 vCPU - Memory: 50GB - Which of the following accurately describes this situation?

   • AThe system is under CPU pressure and will require additional vCPUs.
   • BThe system has been running for over a year and requires a reboot.
   • CToo many users are currently logged in to the system.
   • DThe system requires more memory.

   Show answer

   Answer: A

   Explanation

   Disagree. The system REQUIRES a reboot? I have seen plenty of servers running for more than a year. The uptime command shows that even with 4 vCPUs they are overloaded. Answer A is better.

   Source: Adapted from community discussion — MissAllen

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6. Question 56 · 300 in bank

   A Linux administrator has set up a new DNS forwarder and is configuring all internal servers to use the new forwarder to look up external DNS requests. The administrator needs to modify the firewall on the server for the DNS forwarder to allow the internal servers to communicate to it and make the changes persistent between server reboots. Which of the following commands should be run on the DNS forwarder server to accomplish this task?

   • Aufw allow out dns
   • Bsystemctl reload firewalld
   • Ciptables -A OUTPUT -p udp -m udp -dport 53 -j ACCEPT
   • Dfirewall-cmd --zone=public --add-port=53/udp --permanent

   Show answer

   Answer: D

   Explanation

   D. firewall-cmd --zone=public --add-port=53/udp --permanent. This command will open UDP port 53, which is the port used by DNS, in the public zone of the firewall. The --permanent option makes the change persistent across reboots. Here’s a brief explanation of the other options: A. ufw allow out dns would be used if you were configuring a Ubuntu or Debian-based system that uses UFW ("Uncomplicated" Firewall - notice they did not specify uncomplicated which points towards a firewalld.) B. systemctl reload firewalld is used to reload the firewall configuration, but it doesn’t actually make any changes to the configuration. C. iptables -A OUTPUT -p udp -m udp -dport 53 -j ACCEPT is an iptables command that would allow outgoing DNS traffic, but it wouldn’t persist after a reboot unless saved to a file and restored on boot.

   Source: Adapted from community discussion — DRVision

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7. Question 57 · 300 in bank

   Select 2

   A new Linux systems administrator just generated a pair of SSH keys that should allow connection to the servers. Which of the following commands can be used to copy a key file to remote servers? (Choose two.)

   • Awget
   • Bssh-keygen
   • Cssh-keyscan
   • Dssh-copy-id
   • Eftpd
   • Fscp

   Show answer

   Answer: DF

   Explanation

   D. ssh-copy-id F. scp The ssh-copy-id and scp commands can be used to copy an SSH key file to remote servers. The ssh-copy-id command is used to install the public key of an SSH key pair to the authorized_keys file of a remote server. This allows the user to log into the remote server without a password, using the private key of the key pair.

   Source: Adapted from community discussion — linux_admin

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8. Question 58 · 300 in bank

   A Linux engineer receives reports that files created within a certain group are being modified by users who are not group members. The engineer wants to reconfigure the server so that only file owners and group members can modify new files by default. Which of the following commands would accomplish this task?

   • Achmod 775
   • Bumask. 002
   • Cchattr -Rv
   • Dchown -cf

   Show answer

   Answer: B

   Explanation

   B. umask. 002 default permissions Linux sets for files and directories before umask which is 666 for files and 777 for directories. 6-2 = 4 which is read only for Other users.

   Source: Adapted from community discussion — examtopics11

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9. Question 59 · 300 in bank

   Select 2

   A Linux systems administrator needs to copy files and directories from Server A to Server B. Which of the following commands can be used for this purpose? (Choose two.)

   • Arsyslog
   • Bcp
   • Crsync
   • Dreposync
   • Escp
   • Fssh

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   Answer: CE

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10. Question 60 · 300 in bank

    A Linux administrator rebooted a server. Users then reported some of their files were missing. After doing some troubleshooting, the administrator found one of the filesystems was missing. The filesystem was not listed in /etc/fstab and might have been mounted manually by someone prior to reboot. Which of the following would prevent this issue from reoccurring in the future?

    • ASync the mount units.
    • BMount the filesystem manually.
    • CCreate a mount unit and enable it to be started at boot.
    • DRemount all the missing filesystems.

    Show answer

    Answer: C

    Explanation

    C. Create a mount unit and enable it to be started at boot. Explanation: If a filesystem is missing after a reboot, it may be because it was not mounted at boot time. To prevent this from happening in the future, the filesystem should be mounted automatically at boot time. This can be done by creating a mount unit and enabling it to be started at boot.

    Source: Adapted from community discussion — linux_admin

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XK0-005 practice, question 51. 300 questions available.