Page 12 of 14 · 263 total questions.
An administrator needs to increase the system priority of a process with PID 2274. Which of the following commands should the administrator use to accomplish this task?
The correct answer is A. Option A: renice -n -15 2274
A Linux administrator is creating a new sudo profile for the accounting user. Which of the following should be added by the administrator to the sudo configuration file so that the accounting user can run /opt/acc/report as root?
The correct answer is B. Option B: accounting ALL=/opt/acc/report
An administrator needs to make an application change via a script that must be run only in console mode. Which of the following best represents the sequence the administrator should execute to accomplish this task?
The correct answer is A. Option A: systemctl isolate multi-user.target sh script.sh systemctl isolate graphical.target
A Linux administrator logs in to a system and identifies that an important backup has been started. The backup process is consuming a considerable amount of CPU lime but needs to continue. Which of the following should the administrator use to reduce the impact this process has on other services?
The correct answer is A. Option A: renice -n 15 -p
The application team has reported latency issues that are causing the application to crash on the Linux server. The Linux administrator starts troubleshooting and receives the following output: Which of the following commands will improve the latency issue?
The correct answer is D. Option D: # echo 'net.core.rmem_max = 12500000' >> /etc/sysctl.conf # echo 'net.core.wmem_max = 12500000' >> /etc/sysctl.conf # sysctl -p
An administrator recently updated the BIND software package and would like to review the default configuration that shipped with this version. Which of the following files should the administrator review?
The correct answer is A. Option A: /etc/named.conf.rpmnew
A systems administrator received a request to change a user's credentials. Which of the following commands will grant the request?
The correct answer is A. Option A: sudo passwd
A user is unable to log on to a Linux workstation. The systems administrator executes the following command: The command results in the following output: Which of the following should the systems administrator execute to fix the issue?
The correct answer is D. Option D: passwd -u user1
A systems administrator is tasked with creating an Ansible playbook to automate the installation of patches on several Linux systems. In which of the following languages should the playbook be written?
The correct answer is B. Option B: YAML
A systems administrator is working on a security report from the Linux servers. Which of the following commands can the administrator use to display all the firewall rules applied to the Linux servers? (Choose two.)
The correct answer is D, E. Option D: firewall-cmd --list-all Option E: ufw status
Explanation
A firewall enforces traffic policy by permitting or blocking connections based on configured rules. This option keeps traffic private / properly secured as required.
A Linux administrator intends to start using KVM on a Linux server. Which of the following commands will allow the administrator to load the KVM module as well as any related dependencies?
The correct answer is A. Option A: modprobe kvm
The group owner of the /home/test directory would like to preserve all group permissions on files created in the directory. Which of the following commands should the group owner execute?
The correct answer is A. Option A: chmod g+s /home/test
The administrator comptia is not able to perform privileged functions on a newly deployed system. Given the following command outputs: Which of the following is the reason that the administrator is unable to perform the assigned duties?
The correct answer is B. Option B: The administrator is not a part of the correct group.
A Linux administrator deployed a large-scale application service as a containerized pod. The Linux administrator needs to continually send the application's log file to the company's central log store. Which of the following should the Linux administrator do to efficiently perform this task?
The correct answer is A. Option A: Configure a sidecar to perform log shipping. This option scales automatically to match demand.
A systems administrator is trying to track down a rogue process that has a TCP listener on a network interface for remote command-and-control instructions. Which of the following commands should the systems administrator use to generate a list of rogue process names? (Choose two.)
The correct answer is A, B. Option A: netstat -antp | grep LISTEN Option B: lsof -iTCP | grep LISTEN
A Linux engineer finds multiple failed login entries in the security log file for application users. The Linux engineer performs a security audit and discovers a security issue. Given the following: # grep -iE '*www*|db' /etc/passwd www-data:x:502:502:www-data:/var/www:/bin/bash db:x:505:505:db:/opt/db:/bin/bash Which of the following commands would resolve the security issue?
The correct answer is D. Option D: chsh -s /bin/false www-data && chsh -s /bin/false db This option keeps traffic private / properly secured as required.
A Linux administrator needs to transfer a local file named accounts.pdf to a remote /tmp directory of a server with the IP address 10.10.10.80. Which of the following commands needs to be executed to transfer this file?
The correct answer is B. Option B: scp accounts.pdf user@l0.10.10.80:/tmp
An administrator has source code and needs to rebuild a kernel module. Which of the following command sequences is most commonly used to rebuild this type of module?
The correct answer is A. Option A: ./configure make make install
An 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?
The correct answer is C. Option C: mtr -T -P 443
A Linux administrator is troubleshooting an issue in which users are not able to access https://portal.comptia.org from a specific workstation. The administrator runs a few commands and receives the following output: # cat /etc/hosts 10.10.10.55 portal.comptia.org # host portal.comptia.org portal.comptia.org has address 192.168.1.55 #cat /etc/resolv.conf nameserver 10.10.10.5 Which of the following tasks should the administrator perform to resolve this issue?
The correct answer is B. Option B: Remove the entry for portal.comptia.org from the local hosts file.
Showing questions 221–240 of 263 · Page 12 of 14