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DevNet Associate (DEVASC) Exam Dumps

200-901 Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives

Exam Number : 200-901

Exam Name : DevNet Associate (DEVASC)

Duration: 120 minutes

Available languages: English, Japanese

This exam tests your knowledge of software development and design, including:

- Understanding and using APIs

- Cisco platforms and development

- Application development and security

- Infrastructure and automation

The DevNet Associate Exam v1.0 (DEVASC 200-901) exam is a 120-minute exam associated with the Cisco Certified DevNet Associate certification. This exam tests a candidate's knowledge of software development and design including understanding and using APIs, Cisco platforms and development, application development and security, and infrastructure and automation. The course, Developing Applications and Automating Workflows Using Cisco Core Platforms, helps candidates to prepare for this exam.

15% 1.0 Software Development and Design

1.1 Compare data formats (XML, JSON, and YAML)

1.2 Describe parsing of common data format (XML, JSON, and YAML) to Python data structures

1.3 Describe the concepts of test-driven development

1.4 Compare software development methods (agile, lean, and waterfall)

1.5 Explain the benefits of organizing code into methods / functions, classes, and modules

1.6 Identify the advantages of common design patterns (MVC and Observer)

1.7 Explain the advantages of version control

1.8 Utilize common version control operations with Git

1.8.a Clone

1.8.b Add/remove

1.8.c Commit

1.8.d Push / pull

1.8.e Branch

1.8.f Merge and handling conflicts

1.8.g diff

20% 2.0 Understanding and Using APIs

2.1 Construct a REST API request to accomplish a task given API documentation

2.2 Describe common usage patterns related to webhooks

2.3 Identify the constraints when consuming APIs

2.4 Explain common HTTP response codes associated with REST APIs

2.5 Troubleshoot a problem given the HTTP response code, request and API documentation

2.6 Identify the parts of an HTTP response (response code, headers, body)

2.7 Utilize common API authentication mechanisms: basic, custom token, and API keys

2.8 Compare common API styles (REST, RPC, synchronous, and asynchronous)

2.9 Construct a Python script that calls a REST API using the requests library

15% 3.0 Cisco Platforms and Development

3.1 Construct a Python script that uses a Cisco SDK given SDK documentation

3.2 Describe the capabilities of Cisco network management platforms and APIs (Meraki, Cisco DNA Center, ACI, Cisco SD-WAN, and NSO)

3.3 Describe the capabilities of Cisco compute management platforms and APIs (UCS Manager, UCS Director, and Intersight)

3.4 Describe the capabilities of Cisco collaboration platforms and APIs (Webex Teams, Webex devices, Cisco Unified Communication Manager including AXL and UDS
interfaces, and Finesse)

3.5 Describe the capabilities of Cisco security platforms and APIs (Firepower, Umbrella, AMP, ISE, and ThreatGrid)

3.6 Describe the device level APIs and dynamic interfaces for IOS XE and NX-OS

3.7 Identify the appropriate DevNet resource for a given scenario (Sandbox, Code Exchange, support, forums, Learning Labs, and API documentation)

3.8 Apply concepts of model driven programmability (YANG, RESTCONF, and NETCONF) in a Cisco environment

3.9 Construct code to perform a specific operation based on a set of requirements and given API reference documentation such as these:

3.9.a Obtain a list of network devices by using Meraki, Cisco DNA Center, ACI, Cisco SD-WAN, or NSO

3.9.b Manage spaces, participants, and messages in Webex Teams

3.9.c Obtain a list of clients / hosts seen on a network using Meraki or Cisco DNA Center

15% 4.0 Application Deployment and Security

4.1 Describe benefits of edge computing

4.2 Identify attributes of different application deployment models (private cloud, public cloud, hybrid cloud, and edge)

4.3 Identify the attributes of these application deployment types

4.3.a Virtual machines

4.3.b Bare metal

4.3.c Containers

4.4 Describe components for a CI/CD pipeline in application deployments

4.5 Construct a Python unit test

4.6 Interpret contents of a Dockerfile

4.7 Utilize Docker images in local developer environment

4.8 Identify application security issues related to secret protection, encryption (storage and transport), and data handling

4.9 Explain how firewall, DNS, load balancers, and reverse proxy in application deployment

4.10 Describe top OWASP threats (such as XSS, SQL injections, and CSRF)

4.11 Utilize Bash commands (file management, directory navigation, and environmental variables)

4.12 Identify the principles of DevOps practices

20% 5.0 Infrastructure and Automation

5.1 Describe the value of model driven programmability for infrastructure automation

5.2 Compare controller-level to device-level management

5.3 Describe the use and roles of network simulation and test tools (such as VIRL and pyATS)

5.4 Describe the components and benefits of CI/CD pipeline in infrastructure automation

5.5 Describe principles of infrastructure as code

5.6 Describe the capabilities of automation tools such as Ansible, Puppet, Chef, and Cisco NSO

5.7 Identify the workflow being automated by a Python script that uses Cisco APIs including ACI, Meraki, Cisco DNA Center, or RESTCONF

5.8 Identify the workflow being automated by an Ansible playbook (management packages, user management related to services, basic service configuration, and start/stop)

5.9 Identify the workflow being automated by a bash script (such as file management, app install, user management, directory navigation)

5.10 Interpret the results of a RESTCONF or NETCONF query

5.11 Interpret basic YANG models

5.12 Interpret a unified diff

5.13 Describe the principles and benefits of a code review process

5.14 Interpret sequence diagram that includes API calls

15% 6.0 Network Fundamentals

6.1 Describe the purpose and usage of MAC addresses and VLANs

6.2 Describe the purpose and usage of IP addresses, routes, subnet mask / prefix, and gateways

6.3 Describe the function of common networking components (such as switches, routers, firewalls, and load balancers)

6.4 Interpret a basic network topology diagram with elements such as switches, routers, firewalls, load balancers, and port values

6.5 Describe the function of management, data, and control planes in a network device

6.6 Describe the functionality of these IP Services: DHCP, DNS, NAT, SNMP, NTP

6.7 Recognize common protocol port values (such as, SSH, Telnet, HTTP, HTTPS, and NETCONF)

6.8 Identify cause of application connectivity issues (NAT problem, Transport Port blocked, proxy, and VPN)

6.9 Explain the impacts of network constraints on applications

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Cisco
200-901
DevNet Associate (DEVASC)
http://killexams.com/pass4sure/exam-detail/200-901
Question: 303
Which two statements describe the advantages of using a version control system? (Choose two.)
A. It allows for branching and merging so that different tasks are worked on in isolation before they are merged into a
feature or master branch.
B. It provides tooling to automate application builds and infrastructure provisioning.
C. It allows multiple engineers to work against the same code and configuration files and mange differences and
conflicts.
D. It provides a system to track User Stories and allocate to backlogs.
E. It allows developers to write effective unit tests.
Answer: AD
Explanation:
Reference: https://www.agileconnection.com/article/picking-right-branch-merge-strategy
Question: 304
When a Cisco IOS XE networking device is configured using RESTCONF, what is the default data-encoding method?
A. YANG
B. YAML
C. XML
D. x-form-encoding
Answer: A
Explanation:
Reference https://www.cisco.com/c/en/us/td/docs/ios-
xml/ios/prog/configuration/166/b_166_programmability_cg/restconf_prog_int.html
Question: 305
Refer to the exhibit.
A process on the host wants to access the service running inside this Docker container.
Which port is used to make a connection?
A. only outbound connections between 3000 and 5000 are possible
B. port 3000
C. any port between 3000 and 5000
D. port 5000
Answer: C
Question: 306
Which device is a system that monitors and controls incoming and outgoing network traffic based on predetermined
security roles?
A. router
B. switch
C. load balancer
D. firewall
Answer: D
Question: 307
Refer to the exhibit.
Which Python data structure does my_json contain?
A. map
B. list
C. json
D. dict
Answer: D
Explanation:
Reference: https://stackoverflow.com/questions/34764979/loading-python-string-with-u-as-json? noredirect=1&lq=1
Question: 308
Which description of a default gateway is true?
A. It is a security feature that denies certain traffic.
B. It is a device that receives IP packets that have no explicit next-hop in the routing table.
C. It is a feature that translates between public and private addresses.
D. It is a device that receives Layer 2 frames with an unknown destination address.
Answer: B
Explanation:
Reference: https://www.certificationkits.com/cisco-certification/ccna-articles/cisco-ccna-intro-to-routing-basics/cisco-
ccna-default-gateway-a-default-routes/
Question: 309
Which two elements are foundational of DevOps? (Choose two.)
A. organizing cross-functional teams over organizational silos
B. designing applications as microservices
C. encouraging containers for the deployment of applications
D. automating over documenting
E. optimizing the cost of infrastructures
Answer: AC
Explanation:
Reference: https://www.cisco.com/c/dam/en/us/products/collateral/cloud-systems-management/cloudcenter/white-
paper-c11-737221.pdf
Question: 310
A developer is reviewing a code that was written by a colleague. It runs fine, but there are many lines of code to do a
seemingly simple task repeatedly.
Which action organizes the code?
A. Refactor the code by removing any unnecessary tests.
B. Reverse engineer and rewrite the code logic.
C. Using functions, rewrite any pieces of code that are repeated.
D. Modify the code to use loops.
Answer: A
Question: 311
Refer to the exhibit.
The output of a unified diff when comparing two versions of a Python script is shown.
Which two �single_request_timeout()� functions are defined in fish.py and cat.py? (Choose two.)
A)
B)
C)
D)
A. Option A
B. Option B
C. Option C
D. Option D
Answer: AB
Question: 312
Question: 313
Which two types of NAT are used in a network? (Choose two.)
A. routed NAT
B. static NAT
C. multicast NAT
D. normal NAT
E. dynamic NAT
Answer: BE
Explanation:
Reference: https://www.dummies.com/programming/networking/cisco/types-of-network-addresstranslation/
Question: 314
Refer to the exhibit.
What is the function of the Python script?
A. Loop through the returned of network devices and, for each device, print the device name and management IP
address.
B. Count and print the total number of available devices.
C. For each device that is returned, display the device type and associated management IP address.
D. Iterate over a list of network devices and write all device names and management IP addresses to an output file.
Answer: B
Question: 315
Refer to the exhibit.
Which JSON is equivalent to the XML-encoded data?
A)
B)
C)
D)
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Explanation:
Reference: https://www.guru99.com/json-vs-xml-difference.html
Question: 316
What are the purpose of the Cisco VIRL software tool?
A. to verify configurations against compliance standards
B. to automate API workflows
C. to simulate and model networks
D. to test performance of an application
Answer: C
Explanation:
Reference: https://www.speaknetworks.com/cisco-virl-better-gns3/
Question: 317
What are two advantages of version control software? (Choose two.)
A. It supports tracking and comparison of changes in binary format files.
B. It allows new team members to access the current code and history.
C. It supports comparisons between revisions of source code files.
D. It provides wiki collaboration software for documentation.
E. It allows old versions of packaged applications to be hosted on the Internet.
Answer: AC
Explanation:
Explanation: Version control is a way to keep a track of the changes in the code so that if something goes wrong, we
can make comparisons in different code versions and revert to any previous version that we want. It is very much
required where multiple developers are continuously working on /changing the source code.
Question: 318
Which CI/CD tool is an automation tool used to build, test, and deploy software?
A. Git
B. Gradle
C. Nagios
D. Jenkins
Answer: D
Explanation:
Reference: https://www.infoworld.com/article/3271126/what-is-cicd-continuous-integration-and-continuousdelivery-
explained.html
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