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NEW QUESTION # 65
Which of the following best describes a use case for playbooks in a Linux system?
Answer: C
Explanation:
In Ansible, a playbook is a YAML file that defines tasks, configurations, and automation workflows. It is commonly used to deploy applications, configure systems, and manage infrastructure on Linux systems.
NEW QUESTION # 66
A Linux administrator needs to create and then connect to the app-01-image container. Which of the following commands accomplishes this task?
Answer: C
Explanation:
Container lifecycle management is a core topic within the Automation, Orchestration, and Scripting domain of CompTIA Linux+ V8. Administrators must understand the difference between creating containers, starting containers, and executing commands within running containers.
The correct command is docker run -it app-01-image. The docker run command performs three actions at once: it creates a new container from the specified image, starts the container, and optionally attaches the administrator's terminal to it. The -i option keeps standard input open, while the -t option allocates a pseudo- terminal (TTY). Together, these options allow the administrator to interactively connect to the container immediately after it is created.
The other options are incorrect for the following reasons. docker start is used only to start an existing stopped container and does not create a new container from an image. Additionally, -t and -d are not valid options for attaching an interactive terminal during container startup. docker build is used to build a Docker image from a Dockerfile and cannot be used to create or connect to a container. docker exec is used to run commands inside an already running container and therefore cannot be used to create a container.
Linux+ V8 documentation emphasizes that docker run is the primary command used when administrators want to instantiate containers from images and interact with them. This command is commonly used during testing, development, and troubleshooting workflows.
NEW QUESTION # 67
An administrator updates the network configuration on a server but wants to ensure the change will not cause an outage if something goes wrong. Which of the following commands allows the administrator to accomplish this goal?
Answer: A
Explanation:
Network configuration changes can cause immediate loss of connectivity if applied incorrectly. Linux+ V8 emphasizes safe configuration practices, particularly when managing remote systems.
The netplan try command applies network configuration changes temporarily and prompts the administrator to confirm them within a timeout period. If the administrator does not confirm, Netplan automatically rolls back to the previous working configuration. This prevents accidental outages caused by misconfigured network settings.
The netplan apply command makes changes permanent immediately and does not provide rollback protection.
The other options are not valid Netplan commands.
Linux+ V8 documentation explicitly references netplan try as a safe testing mechanism. Therefore, the correct answer is A.
NEW QUESTION # 68
A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:
Firewall output:
Status: active
To Action From
443/tcp DENY Anywhere
443/tcp (v6) DENY Anywhere (v6)
Web server output:
tcp LISTEN 0 4096 *:443 :
Which of the following commands best resolves this issue?
Answer: B
NEW QUESTION # 69
System users are being randomly disconnected from a server. The systems administrator inspects the following output:
# ping 192.168.1.1
--- 192.168.1.1 ping statistics ---
100 packets transmitted, 4 received, 96% packet loss
# ip -s link show
RX: errors 400000
TX: errors 150000
# ip route
default via 192.168.1.1 dev enp0s25 proto dhcp src 192.168.1.102 metric 600 Which of the following should the administrator do to fix the issue?
Answer: C
Explanation:
The correct answer is B. Replace the NIC because the output clearly indicates a hardware-level network issue, specifically with the network interface card (NIC). The ping results show 96% packet loss, which is extremely high and suggests severe communication failure between the system and the gateway. While packet loss can be caused by various issues, the key evidence comes from the ip -s link show output.
The interface statistics show a very large number of RX (receive) and TX (transmit) errors, which are abnormal and indicate that packets are being corrupted or dropped at the hardware or driver level. In a properly functioning interface, error counts should remain very low or zero. Such high error rates strongly suggest a failing NIC, faulty cable, or physical connection issue. Among the provided options, replacing the NIC is the most direct and appropriate solution.
Option A (Assign a proper gateway) is incorrect because the routing table already shows a valid default gateway (192.168.1.1). The system is able to send packets, but they are being lost due to errors, not misrouting. Option C (Increase the ping ' s TTL) is incorrect because TTL affects how long packets can traverse networks, not packet loss due to hardware errors. Option D (Increase the MTU size) is also incorrect because MTU mismatches typically cause fragmentation issues, not massive RX/TX errors.
In Linux troubleshooting, analyzing interface statistics using ip -s link is a critical skill. High error counters are a strong indicator of physical or hardware faults. Therefore, replacing the NIC (or checking cables and hardware) is the correct action to restore reliable network connectivity.
NEW QUESTION # 70
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