Cisco 200-901 Dumps Questions Answers

Cisco 200-901 Dumps

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Cisco 200-901 Frequently Asked Questions

Cisco 200-901 Sample Questions

Question # 1

Developer is working on a new feature and made changes on a branch named ‘branch-413667549a-new’. When merging the branch to production, conflicts occurred. Which Git command must the developer use to recreate the pre-merge state? 

git merge -no-edit
git merge -commit 
git merge -revert 
git merge -abort 

Show Answer

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Question # 2

Which TCP port is used to connect to a network device by using Telnet? 

23
69
400
830

Show Answer

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Question # 3

What is a comparison of YAML and JSON? 

YAML has a more consistent approach to representing data compared to JSON.
JSON does not support comments and YAML does. 
YAML is a more verbose data structure compared to JSON. 
JSON has more common usage in configuration management tools compared to YAML. 

Show Answer

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Question # 4

Which IP service is used to monitor the performance of network devices? 

SNMP
DHCP
DNS
NTP

Show Answer

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Question # 5

A developer pushes an application to production. The application receives a webhook over HTTPS without a secret. The webhook information contains credentials to service in cleartext. When the information is received, it is stored in the database with an SHA-256 hash. Credentials to the database are accessed at runtime through the use of a vault service. While troubleshooting, the developer sets the logging to debug to view the message from the webhook. What is the security issue in this scenario?

Database credentials should be accessed by using environment variables defined at runtime. 
During the transport of webhook messages, the credentials could be unencrypted and leaked. 
During logging, debugging should be disabled for the webhook message. 
Hashing the credentials in the database is not secure enough; the credentials should be encrypted. 

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Question # 6

A file in a local Git repository has been updated and issued the git add . command. The git diff command has been run to compare the changes to the previous commit, but nothing shows. Which action identifies the problem?

Run the git add . command again in the correct subdirectory to ensure changes added to the staging area. 
Run the git commit command before the differences are compared to receive the end state of the code. 
Run the git status command to see the differences between current and previous code review stages. 
Run the git diff --staged command to compare the code added to the staging area.

Show Answer

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Question # 7

What is the meaning of the HTTP status code 204? 

request completed; new resource created 
server successfully processed request; no content returned 
standard response for successful requests 
invalid query parameters 

Show Answer

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Question # 8

A developer has experienced security issues with a previously developed application. The API offered by that application is open and without any constraints. During a recent attack, the application was overloaded with API requests. To address this issue, an API constraint is implemented to protect the application from future attacks or any sudden throttling. Which API constraint must the application developer implement in this situation? 

pagination
rate limiting 
filtering
payload limiting 

Show Answer

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Question # 9

What is a capability of the AXL API? 

It signs a user in to a phone that is configured for extension mobility. 
It pulls logs for the Cisco Tomcat service. 
It authenticates users who exist in Cisco Unified Communications Manager. 
It provides support for HTTP and HTTPS communications. 

Show Answer

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Question # 10

Which technology is responsible for resolving a host name to an IP address? 

DNS
SNMP
DHCP
NTP

Show Answer

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Question # 11

What is the purpose of running tests before writing code in test-driven development? 

to find unexpected failures in the tests 
to demonstrate that the tests fail for expected reasons 
to ensure that the tests pass 
to provide proof of the work carried out 

Show Answer

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Question # 12

A team of developers is responsible for a network orchestration application in the company. The responsibilities also include: developing and improving the application in a continuous manner deployment of the application and management of CI/CD frameworks monitoring the usage and problems and managing the performance improvements Which principle best describes this DevOps practice?

responsible for IT operations 
automation of processes 
end-to-end responsibility 
quality assurance checks 

Show Answer

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Question # 13

A company deploys an application via containers in its local data center. As soon as the application goes into production, it starts to crash at specific hours of the day. After investigation, it is concluded that the crashes are due to too many users accessing the application simultaneously. The spikes must be addressed and allow for future growth without discarding the investment already made. Which deployment model must be used? 

hybrid cloud 
edge
private cloud 
public cloud

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Question # 14

Which API is used to obtain data voicemail ports? 

Finesse gadgets 
Cisco Unified Communications manager 
Webex devices 
Webex teams 

Show Answer

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Question # 15

In which situation would an edge computing solution be used? 

where low latency is needed 
where high CPU throughput is needed 
where fast memory is needed 
where high disk space is needed 

Show Answer

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Question # 16

What is the purpose of a firewall in application deployment? 

adds TLS support to an application that does not support it natively 
forwards traffic to a pool of instances of the application 
provides translation for an application's hostname to its IP address 
limits traffic to only ports required by the application 

Show Answer

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Question # 17

Which two commands download and execute an Apache web server container in Docker with a port binding 8080 in the container to 80 on the host? (Choose two.)

docker pull apache 
docker run -p 8080:80 httpd 
docker run -p 80:8080 httpd 
docker pull httpd 
docker pull https 

Show Answer

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Question # 18

A developer has addressed a bug that was found in the production code of an application. A separate file named ‘bug427896191v_fix” has been created with the changes to the code. Which Git command must be used to incorporate the bug fix into the production code? 

git rebase 
git cat-file 
git merge-file
git bisert 

Show Answer

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Question # 19

Which Cisco platform is used to manage data center infrastructure through third-party tools and system integrations? 

Cisco DNA Center 
Cisco UCS Manager 
Cisco Intersight 
Cisco UCS Director 

Show Answer

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Question # 20

Which function does a router provide to a network? 

broadcast domain segmentation 
unique host on a Layer 3 network 
unique hardware address for every node on a LAN 
broadcast domain extension 

Show Answer

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Question # 21

A developer completed the creation of a script using Git. Before delivering it to the customer, the developer wants to be sure about all untracked files, without losing any information. Which command gathers this information?

git clean –n 
git rm –f 
git clean –r
git rm * 

Show Answer

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Question # 22

A customer's cloud services must:Migrate services to another data center on demand. Save the operational state of the machine on demand. Support Windows and Linux GUIs. Maximize hardware utilization. Which type of deployment meets these requirements?  

bare metal 
container
virtual machine 
Kubernetes

Show Answer

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Question # 23

A developer is working on a new feature in a branch named 'newfeat123456789' and the current working primary branch is named 'prim987654321'. The developer requires a merge commit during a fast forward merge for record-keeping purposes. Which Git command must be used?

git merge --no-ff newfeat123456789 
git commit --no-ff newfeat123456789 
git add --commit-ff newfeat123456789 
git reset --commit-ff newfeat123456789 

Show Answer

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Question # 24

What is a benefit of version control? 

prevents two users from working on the same file 
keeps track of all changes to the files 
prevents the sharing of files 
keeps the list of data types used in the files 

Show Answer

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Question # 25

Users cannot access a webserver and after the traffic is captured, the capture tool snows an ICMP packet that reports "time exceeded in-transit". What is the cause of this webserver access issue? 

The large distance between the server and the users means that the packets require too much time to reach the destination. 
A router along the path is misrouting the packets in a wrong direction. 
A router along the path has the wrong time. 
The server is overloaded and the connection was not able to be processed in time. 

Show Answer

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Question # 26

Which network constraint causes the performance of the application to decrease as the number of users accessing the application increases? 

latency
loss
bandwidth
jitter

Show Answer

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Question # 27

A developer is developing a web application that uses username and password to authenticate to the next service. The user credentials must be available at any time in the application. The developer must choose and implement a secure method of storing the authentication credentials that are used in the automation code. Which password handling method must be used to minimize the security risk?

Store the username and password in a separate configuration file. 
Store the username and password in a vault. 
Store the passwords in a dictionary. 
Store the username and password in code. 

Show Answer

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Question # 28

What is a benefit of using functions in the code for the development process?

better user experience in the end product 
improves code performance 
easier to compile the code 
fester code development 

Show Answer

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Question # 29

To which stage of development do Infrastructure as Code principles relate? 

manual configuration 
service provisioning 
physical deployment 
requirement collection 

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Question # 30

Which Cisco product provides malware and content filtering through DNS? 

Cisco ASA Firepower module 
Cisco AMP 
Cisco ISE 
Cisco Umbrella 

Show Answer

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Question # 31

Which Python function is used to parse a string that contains JSON data into a Python dictionary? 

json.dumps() 
json.to_json() 
json.parse() 
json.loads() 

Show Answer

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Question # 32

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 

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Question # 33

In test-driven development, what are two of the green bar patterns? (Choose two.) 

another test 
break
triangulate
starter test 
fake it 

Show Answer

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Question # 34

Which configuration management tool has an agentless capability? 

Chef
Puppet
Ansible
CFEngine

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Question # 35

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. 

Show Answer

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Question # 36

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 

Show Answer

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Question # 37

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 

Show Answer

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Question # 38

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. 

Show Answer

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Question # 39

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 

Show Answer

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Question # 40

Into which type of Python data structure should common data formats be parsed? 

sequence
set
dictionary
list

Show Answer

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Question # 41

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 

Show Answer

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Question # 42

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

Show Answer

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Question # 43

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 

Show Answer

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Question # 44

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 

Show Answer

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Question # 45

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 

Show Answer

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Question # 46

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 

Show Answer

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Question # 47

Which protocol runs over TCP port 23? 

SSH
NETCONF
HTTP
Telnet

Show Answer

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Question # 48

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 

Show Answer

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Question # 49

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

Show Answer

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Question # 50

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

Show Answer

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Question # 51

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.

Show Answer

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Question # 52

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.

Show Answer

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Question # 53

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 

Show Answer

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Question # 54

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 

Show Answer

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Question # 55

Which solution reduces costs from MPLS, improves application performance, and simplifies operations? 

Cisco NSO 
Cisco SD-WAN 
Cisco ACI 
Cisco DNA Center 

Show Answer

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Question # 56

A developer plans to deploy a new application that will use an API to implement automated data collection from Webex with these requirements:The application was created by using the request library. Requires HTTP basic authentication. Provides data in JSON or XML formats. Which Cisco DevNet resource helps the developer with how to use the API?  

DevNet sandbox 
API documentation 
forums
DevNet code exchange 

Show Answer

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Question # 57

What is a feature of XML compared to other data formats? 

It uses tags to define the structure. 
It uses parenthesis for key-value pairs. 
It uses indentation to define the structure. 
It uses namespaces for list representation. 

Show Answer

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Question # 58

Which protocol is used for clock synchronization between network devices? 

FTP
NNTP
BGP
NTP

Show Answer

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