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Cisco 200-901 Sample Question Answers
Question # 1
Which Python function is used to parse a string that contains JSON data into a Python dictionary?
Explanation: loads() function is present in python built-in 'json' module. This function is used to parse the JSON string.
Question # 2
What is a benefit of using a code review process in application development?
accelerates the deployment of new features in an existing application provides version control during code development enables the quick deployment of new code eliminates common mistakes during development
Question # 3
In test-driven development, what are two of the green bar patterns? (Choose two.)
another test break triangulate starter test fake it
Which configuration management tool has an agentless capability?
Chef Puppet Ansible CFEngine
Question # 5
What is a capability of an agentless configuration management system?
It requires managed hosts to have an interpreter for a high-level language such as Python or Ruby. It requires managed hosts to connect to a centralized host to receive updated configurations. It uses compiled languages as the basis of the domain-specific language to interface with managed hosts. It uses existing protocols to interface with the managed host.
Question # 6
A new application is being developed that must be hardware independent. The application includes an
administrative component which is accessed using a Windows desktop GUI. Installation and management of
the environment must be fully automated. Which application deployment type meets the requirements?
bare metal virtual Python environment container virtual machine
Question # 7
A developer is attempting to retrieve all the messages from a Cisco Webex space. The server responds by
sending the first 1,000 messages. The developer must make additional requests to retrieve the rest of the
messages. Which API constraint is described in this scenario?
payload limiting B. throttling pagination rate limiting
Question # 8
Which action do webhooks enable an application to perform?
Increase the request rate limit. Populate the application with restricted data. Receive real-time data. Implement a push model.
Simplifying the wording: Webhook enables the app to ( push or receive real time) . The clients should receive
real time but the app pushes.
Question # 9
A developer creates a program in which an object maintains a list of classes based on the observer pattern. The
classes are dependent on the object. Whenever the state of the object changes, it notifies the dependent classes
directly through callbacks. Which advantage of the observer pattern offers minimum dependencies and
maximum flexibility between dependent objects or classes?
tight coupling cohesion mediation loose coupling
Question # 10
Into which type of Python data structure should common data formats be parsed?
sequence set dictionary list
Question # 11
A group of software developers wants to improve its collaboration with the operations team. The group wants
to deliver release-ready code that merges code changes back to the main branch and runs the automated testing
as often as possible. Which DevOps concept does this scenario represent?
continuous delivery version control continuous integration continuous deployment
Question # 12
Which application should be used to externally access all applications deployed in the same host machine with
a single public IP address and port, when each application listens on different local ports?
reverse proxy load balancer DNS firewall
Question # 13
What is a benefit of a distributed version control system?
encourages users to commit small places of work to the system more frequently ensures that all code meets minimum standards before being committed to the system allows users to work on the codebase even when not connected to the Internet ensures that all code is tested before being committed to the system
How does edge computing analyze sensitive data in the context of privacy control?
locally instead of sending the data to the cloud for analysis locally or on the cloud depending on the configuration all at once by sending the data to the cloud locally on each node, and then sends the data to the cloud
Question # 15
What is a capability of the NETCONF protocol?
allows Python scripts to be executed externally from a network device uses JSON to encode data in its content layer allows XML messages to be exchanged via the SSH protocol exposes a web-based interface
Question # 16
Which two situations align with infrastructure as code principles? (Choose two.)
nonreplicable snowflake servers release versions to specific hardware maximized configuration drift easily reproducible systems repeatable processes
Question # 17
Which protocol runs over TCP port 23?
SSH NETCONF HTTP Telnet
Question # 18
A company wants to automate the orders processed on its website using API. The network device that supports
the solution must:support XML encoding
support distributed transactions
support YANG data models
be support software redundancy
Which requirement prevents the use of RESTCONF for the solution?
software redundancy YANG data models distributed transactions XML encoding
Question # 19
Which OWASP threat takes advantage of a web application that the user has already authenticated to execute
an attack?
phishing DoS brute force attack CSRF
Question # 20
Which standard supported by Cisco IOS XE and Cisco NX-OS is used for automating the configuration of
multiple devices across a network?
SNMP – YANG SYSLOG – YANG CLI – YANG NETCONF – YANG
Question # 21
What is a difference between a synchronous API and an asynchronous API?
An asynchronous API can make offline calls while synchronous APIs do not have this capability. Synchronous API calls are returned immediately while asynchronous calls do not guarantee an
immediate response. Synchronous API calls require an authentication header to be sent while asynchronous calls do not
require authentication. An asynchronous API can make a larger number of calls in a specified time period than a synchronous
API.
How are operations on REST APIs performed as compared to RPC APIs?
In a REST API, operations are performed on an object (node) that is identified by a URL, but RPC APIs
are operation-oriented. In a REST API, operations are performed on an external resource that is defined on the API, but the
RCP APIs are resource-oriented. In a REST API, operations are performed on a platform that is identified by the URL, but RPC APIs are
platform-oriented. In a REST API, operations are performed on an internal resource that is defined on the API, but RPC
APIs are resource-oriented.
Question # 23
What is a benefit of a CI/CD pipeline for infrastructure?
removes manual errors enables manual steps removes the need for operations provides variety for deployments
Question # 24
A developer has created a new image to use in a Docker build and has added a tag for the image by using the
command:$ docker tag 84fe411926287 local/app:0.4Which command must be executed next to build the Docker image using the tag?
$ docker build -p local/app:0.4 $ docker run -t local/app:0.4 $ docker run -p local/app:0.4 $ docker build -t local/app:0.4
Question # 25
Which solution reduces costs from MPLS, improves application performance, and simplifies operations?
Cisco NSO Cisco SD-WAN Cisco ACI Cisco DNA Center
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