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Question 143/168
A Linux administrator needs to harden a system and guarantee that the Postfix service will not run, even after a restart or system upgrade. Which of the following commands allows the administrator to fulfill the requirement?
Correct Answer: A
The systemctl mask postfix.service command prevents the Postfix service from being started manually or automatically by symlinking its service file to /dev/null. This ensures that even if a system restart or upgrade occurs, the service will remain disabled and will not start.
- Question List (168q)
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- Question 11: A junior Linux administrator is tasked with installing an ap...
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- Question 17: A Linux administrator is troubleshooting an issue in which u...
- Question 18: A Linux system is failing to boot. The following error is di...
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- Question 20: A Linux engineer receives reports that files created within ...
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- Question 22: Which of the following is the best tool for dynamic tuning o...
- Question 23: A Linux systems administrator is troubleshooting an I/O late...
- Question 24: A cloud engineer is asked to copy the file deployment.yaml f...
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- Question 28: An administrator recently updated the BIND software package ...
- Question 29: Which of the following technologies provides load balancing,...
- Question 30: As part of the requirements for installing a new application...
- Question 31: An administrator attempts to connect to a remote server by r...
- Question 32: The development team wants to prevent a file from being modi...
- Question 33: A systems administrator is deploying three identical, cloud-...
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- Question 36: A Linux administrator reviews a set of log output files and ...
- Question 37: A systems administrator needs to reconfigure a Linux server ...
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- Question 39: An administrator started a long-running process in the foreg...
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- Question 42: Following the migration from a disaster recovery site, a sys...
- Question 43: Which of the following should be used to verify the integrit...
- Question 44: A Linux administrator needs to redirect all HTTP traffic tem...
- Question 45: Users are reporting that writes on a system configured with ...
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- Question 47: A user is attempting to log in to a Linux server that has Ke...
- Question 48: A Linux administrator rebooted a server. Users then reported...
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- Question 52: Which of the following files holds the system configuration ...
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- Question 58: Users have reported that the interactive sessions were lost ...
- Question 59: A Linux administrator needs to determine if prerequisites ar...
- Question 60: A developer has been unable to remove a particular data fold...
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- Question 63: A diagnostic tool reports a "host seems down" event for a se...
- Question 64: Users have been unable to save documents to /home/tmp/temp a...
- Question 65: A Linux engineer needs to create a custom script, cleanup.sh...
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- Question 68: A developer is trying to install an application remotely tha...
- Question 69: A Linux engineer has been notified about the possible deleti...
- Question 70: A Linux administrator has defined a systemd script docker-re...
- Question 71: A security analyst is monitoring the network to identify lat...
- Question 72: A Linux engineer wants to give read-write-execute permission...
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- Question 74: An administrator runs ping comptia.org. The result of the co...
- Question 75: An application developer received a file with the following ...
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- Question 77: A systems administrator installed a new software program on ...
- Question 78: Which of the following options describes the purpose of YAML...
- Question 79: An administrator is trying to diagnose a performance issue a...
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- Question 82: A systems administrator has been unable to terminate a proce...
- Question 83: An administrator needs to increase the system priority of a ...
- Question 84: Due to performance issues on a server, a Linux administrator...
- Question 85: A Linux administrator copied a Git repository locally, creat...
- Question 86: An administrator created an initial Git repository and uploa...
- Question 87: A DevOps engineer pushed the updated configuration to an exi...
- Question 88: A hardened physical Linux system allows regular, unprivilege...
- Question 89: A hardened physical Linux system allows regular, unprivilege...
- Question 90: A systems administrator received a request to change a user'...
- Question 91: A Linux administrator was notified that a virtual server has...
- Question 92: A Linux administrator generated a list of users who have roo...
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- Question 95: A Linux administrator is implementing a stateful firewall on...
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- Question 98: A Linux systems administrator receives reports from various ...
- Question 99: In which of the following filesystems are system logs common...
- Question 100: A systems administrator created a new Docker image called te...
- Question 101: A systems administrator checked out the code from the reposi...
- Question 102: A Linux administrator has logged in to a server for the firs...
- Question 103: A new disk was presented to a server as /dev/ sdd. The syste...
- Question 104: A Linux system is failing to boot with the following error: ...
- Question 105: A user generated a pair of private-public keys on a workstat...
- Question 106: A Linux administrator is troubleshooting an issue in which a...
- Question 107: A Linux system fails to start and delivers the following err...
- Question 108: A Linux administrator is scheduling a system job that runs a...
- Question 109: After installing a new version of a package, a systems admin...
- Question 110: What is the main objective when using Application Control?...
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- Question 114: A developer reported an incident involving the application c...
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- Question 120: A systems administrator receives the following errors via em...
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- Question 124: A Linux administrator is troubleshooting SSH connection issu...
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- Question 127: A systems administrator needs to clone the partition /dev/sd...
- Question 128: Which of the following commands will display the operating s...
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- Question 138: An administrator would like to securely connect to a server ...
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- Question 140: The security team has identified a web service that is runni...
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- Question 143: A Linux administrator needs to harden a system and guarantee...
- Question 144: A new Linux systems administrator just generated a pair of S...
- Question 145: A Linux administrator was asked to run a container with the ...
- Question 146: A Linux administrator needs to resolve a service that has fa...
- Question 147: A Linux systems administrator is trying to execute a particu...
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- Question 150: A Linux systems administrator receives a notification that o...
- Question 151: An administrator accidentally installed the httpd RPM packag...
- Question 152: A systems administrator is adding a Linux-based server and r...
- Question 153: A Linux administrator is creating a new sudo profile for the...
- Question 154: Which of the following tools is commonly used for creating C...
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- Question 157: As a Systems Administrator, to reduce disk space, you were t...
- Question 158: Developers have requested implementation of a persistent, st...
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- Question 163: The group owner of the / home/ test directory would like to ...
- Question 164: A network administrator issues the dig ww. comptia. org comm...
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- Question 166: A systems administrator is encountering performance issues. ...
- Question 167: Which of the following enables administrators to configure a...
- Question 168: A DevOps engineer needs to allow incoming traffic to ports i...
