300-910 Online Practice Questions and Answers

FILL BLANK Fill in the blanks to describe the concepts of extending DevOps practices to the network for NetDevOps. NetDevOps builds and manages networks as a system that enables network services to be consumed in a DevOps approach. Organizations practicing NetDevOps see changes in the _________ as routine and expected activities, with a well-

defined and practiced process for _________ , testing, and __________ network changes. By making them routine, network changes can be small and simple.

A DevOps engineer must validate the working state of the network before implementing a CI/CD pipeline model. Which configuration management tool is designed to accomplish this?

A. Jenkins

B. Genie CLI

C. Travis CI

D. Python YAML data libraries

A company has experienced serious growth and the hosted applications are getting more and more hits. Based on the increased work load, applications have started to show signs of reduced performance, which is affecting the user experience.

Which two server metrics should be tracked to ensure that the customer experience remains within acceptable limits? (Choose two.)

A. application feature sprawl

B. CPU peak usage

C. CPU average usage

D. microservices count

E. CPU frequency

When DevOps practices are integrated into an existing organization, which two characteristics are positive indicators of DevOps maturity? (Choose two.)

A. mean time between success

B. mean time to recover

C. cone testing

D. change lead time

E. age of codebase

Refer to the exhibit.

A developer needs to scale the existing pods within the worked nodes. Which object should be edited to achieve this goal?

A. ReplicaSet

B. PriorityClass

C. Deployment

D. Pod

An end user is seeing long web page load times on the internal business application that they are trying to view. The user is seeing this issue across multiple web browsers, and other users encounter the same issue. Which action should the system administrator take to start looking for the cause of this issue?

A. Check to make sure Nginx is running.

B. Check for response times in Nginx logs.

C. Check to make sure the web API response is coming back in JSON.

D. Check the size of the database that the application is using.

How long analysis systems such as Elasticsearch, Logstash, and Kibana Stack handle ingesting unstructured logs from different devices in various formats?

A. All devices that generate syslogs must use agents that process the local logs and transmit them in a specific format to the ELK Stack.

B. All logs are stored in their unstructured text format, and the ELK Stack performs data analysis by intelligently parsing the logs using machine learning algorithms.

C. All different message formats are parsed separately using custom filters, and the resulting structured data is stored for later analysis.

D. A single, comprehensive log format is defined on the ELK Stack. All incoming logs, regardless of format, are transformed to match the comprehensive format, and only applicable fields are populated.

What is chaos engineering?

A. designing an application with fuzzy logic that makes it hard to predict

B. a product engineering approach that lacks a formal methodology

C. splitting a project between teams that do not communicate with each other

D. introducing problems into a system to study behavior and improve reliability

How does eliminating hardcoded or default passwords help to secure an environment?

A. helps by enforcing your password in a repository and storing it in a secure vault

B. helps to manage passwords centrally

C. helps penetration testing team to focus on other issues more efficiently

D. helps by removing back doors in your environments

As a department starts following NetDevOps principles, how should the network monitoring strategy be updated to provide more visibility into the user experience?

A. Leverage machine learning tools to more quickly identify problems m syslog and SNMP data

B. Update tools to pull or stream monitoring metrics from APIs instead of using legacy protocols

C. Identify and capture the key performance indicators that describe the state of the network

D. Identify and fix network issues faster by leveraging streaming telemetry from network devices

A new banking application is being developed as the main currency exchange resource for all the customers on a global scale. The application must comply with the security based on the deployed region. Therefore, the CI/CD pipeline must be created with the highest security possible.

Which approach accomplishes this goal?

A. Give the accounts used in the CI/CD pipeline full administrative rights to all applications

B. Use the same passwords across the entire CI/CD pipeline

C. Ensure that secrets are not inadvertently passed on during builds for pull requests via CI/CD pipeline

D. Never use one-time passwords in CI/CD pipeline

Refer to the exhibit.

An application for data storing and processing has been created. The application is time- sensitive and manages confidential data AppDynamics identifies error transactions within a distributed application. Which action will help resolve the errors?

A. Rewrite the SQL query identified in the transaction to be more efficient

B. Log in to the node directly and investigate the errors by reviewing log files

C. Drill down to investigate and identify the errors

D. Scale out the node horizontally

A team must roll out updates on the production instance of an application. To avoid any service down time, the new version must be released alongside the old version. After the team ensures that the new version operates as it should, traffic will be redirected to the new version. Then the old version will be shut down.

Which deployment strategy must be used?

A. rolling

B. blue/green

C. shadow

D. canary

What is an advantage of using configuration management tools to automate infrastructure services?

A. eliminates the need to run integration tests within the CI/CD pipeline

B. provides high native monitoring of services

C. eliminates the need for CI/CD tools

D. integrates with container orchestration

An IT team plans to deploy a new service built on top of an existing service. The capacity needed for the new service is difficult to estimate because the demand for the new service is undetermined. The team has these deployment requirements:

1.

A subset of the users of the original service must be migrated to the new service based on their profile

2.

The new service must be rolled back easily if capacity exceeds estimates

Which deployment strategy must be used?

A. rolling

B. blue/green

C. geolocation

D. canary