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Master Cisco DevNet Associate Exam 200-901 with Our Cutting-Edge Prep Suite
Question 1
Refer to the exhibit.
The IT team deployed a new Linux virtual machine for a software engineer to use. but the engineer is not comfortable configuring services using Bash. Which workflow is automated by the Ansible playbook?
Correct : A
The Ansible playbook in the exhibit consists of two stages:
Stage 1: Restarts the network service on the eth0 interface.
Stage 2: Starts the httpd service.
Stage 1:
- name: stage1
ansible.builtin.service:
name: network
state: restarted
args: eth0
This stage ensures that the network service on the eth0 interface is restarted.
Stage 2:
- name: stage2
ansible.builtin.service:
name: httpd
state: started
This stage ensures that the httpd service is started if it is not already running.
Ansible Playbook Documentation: Ansible Service Module
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Question 2
An engineer must investigate the problems on a web application and address them to related teams. The engineer verifies the application reachability from the single public IP
dress with port and discovers that HTTPS access works to three servers of a network farm with IP 172.16.50.1 .2 and .4. but HTTPS access to the server with IP 172.16.50.3 does : work. Which problem type must be addressed as the cause for the case?
Correct : C
The issue described indicates that HTTPS (port 443) access is not working for one specific server (172.16.50.3) in the network farm, while it works for the others. This suggests that the transport port (port 443) might be blocked or filtered for this particular server.
Transport Port Blocking: Network firewalls or security groups might block specific ports for certain IP addresses.
Server Configuration: The server might not have the necessary configuration to accept HTTPS connections on port 443.
Troubleshooting: Verifying firewall rules, security group settings, and server configurations can help identify and resolve the issue.
Network Troubleshooting Guide: Troubleshooting Network Issues
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Question 3
Which HTTP response code is returned from a successful REST API call to create a new resource?
Correct : A
The HTTP status code 201 (Created) indicates that a request has been fulfilled and resulted in a new resource being created.
201 Created: This status code is used when a new resource is successfully created as a result of a POST request.
Use Case: Commonly returned in response to a POST request that adds a new item to a collection.
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Question 4
What is the impact on an application from having a large distance between a client device and a host server?
Correct : B
Latency refers to the delay between a client request and a server response. A large distance between a client device and a host server increases the latency due to the time it takes for data to travel over the network.
Latency: The time delay experienced in a system, particularly in networking, where it refers to the time taken for data to travel from the source to the destination.
Impact: High latency can result in slow response times, negatively impacting the performance of applications, especially those requiring real-time interactions.
Network Latency Overview: Network Latency
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Question 5
A development team needs to containerize an application named 'cust475605674\ A Dockerfile has been created and now the docker build command needs to be run using the current folder to find the Dockerfile. build the image and create a local repository named 'cust321453857-rep' that points to that image. Which command must be used?
Correct : A
To build a Docker image using the current folder and a specified Dockerfile, and then tag the image with a specific name for the local repository, the following command is used:
docker build: This command builds a Docker image from a Dockerfile.
-t cust321453857-rep: The -t option tags the resulting image with the specified name (cust321453857-rep).
-f Dockerfile: The -f option specifies the Dockerfile to use for building the image.
Command:
docker build -t cust321453857-rep -f Dockerfile .
Docker Build Command: Docker Build
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