200-901 Exam Dumps - DevNet Associate (DEVASC)

The provided Ansible playbook is designed to connect to an IOS router and execute the "show run" command to retrieve the current running configuration. The configuration is then registered in a variable called config. The next task copies the output stored in the config variable to a file in a specified directory on the local machine. The file is named based on the router's hostname.

Here are the steps:

Define the hosts: The playbook targets the {{ router }} group or host.

Gather facts: Enabled with gather_facts: true to collect useful information about the target devices.

Connection type: Local, meaning the playbook runs on the local machine where Ansible is invoked.

Task 1 - ios_command:

Executes the "show run" command.

Uses the provided router credentials.

Registers the command output to the config variable.

Task 2 - copy:

Takes the first element from config.stdout (the output of the "show run" command).

Copies this content to a file in /etc/ansible/configs/, naming the file command_{{ router_hostname }}.txt.

DevOps emphasizes collaboration between development and operations teams, breaking down organizational silos to improve workflow and communication (C). Additionally, DevOps focuses on automating processes to increase efficiency, reduce manual effort, and minimize errors, often prioritizing automation over extensive documentation (E).

References:

Cisco DevNet Associate Exam Topics: DevOps Practices and Principles (understanding the core principles of DevOps)

"The Phoenix Project" by Gene Kim, Kevin Behr, and George Spafford (explains the importance of cross-functional teams and automation in DevOps)

The "time exceeded in-transit" ICMP message is generated when a packet's Time-To-Live (TTL) field reaches zero before reaching its destination. This usually occurs when the packet has traversed too many routers (hops), indicating that the destination is too far away or there is a routing loop causing excessive hops.

TTL Field: Every IP packet has a TTL field which decrements by 1 every time it passes through a router. When TTL reaches zero, the packet is discarded and an ICMP "time exceeded" message is sent back to the sender.

Network Latency: High latency or excessive hops can cause packets to expire in transit, leading to this ICMP message.