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Cisco 200-901 DevNet Associate Exam is a certification test that validates your skills and knowledge in software development and design using Cisco platforms and APIs. 200-901 exam is ideal for individuals who want to work as software developers, network automation engineers, or DevOps engineers. It is an associate-level certification exam, which means that it is designed for entry-level professionals who have some foundational knowledge of software development and networking.
Cisco 200-901 (DevNet Associate) Certification Exam is a highly sought-after certification for IT professionals who specialize in Cisco platforms and technologies. DevNet Associate Exam certification validates an individual's skills and knowledge in software development and design, APIs, Cisco platforms and development, and network fundamentals. Passing the exam demonstrates to employers that an individual has the skills required to develop and manage applications that run on Cisco platforms, and can effectively integrate these applications with other systems.
NEW QUESTION # 270
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. Reverse engineer and rewrite the code logic
- B. Modify the code to use loops
- C. Using functions, rewrite any pieces of code that are repeated
- D. Refactor the code by removing any unnecessary tests
Answer: C
Explanation:
When a developer encounters many lines of code doing repetitive tasks, refactoring the code to use functions is a standard practice. This reduces code duplication and enhances readability and maintainability. Functions encapsulate repetitive logic, making the code cleaner and more organized.
Reference: Cisco DevNet Associate Certification Guide, Chapter on Software Development and Design .
NEW QUESTION # 271
Which two situations align with infrastructure as code principles? (Choose two.)
- A. nonreplicable snowflake servers
- B. repeatable processes
- C. release versions to specific hardware
- D. easily reproducible systems
- E. maximized configuration drift
Answer: C,D
NEW QUESTION # 272
what is an advantage of a version control system?
- A. ensures that unit tests are written
- B. facilitates resolving conflicts when merging code
- C. prevents over-writing code or configuration files
- D. forces the practice of trunk-based development
Answer: B
Explanation:
If you have a team of developers working on a project, all writing new code or changing previously written code, losing those files could set you back weeks or months. Version control can protect your code by allowing changes to be checked in (through a process known as a code commit) to a hierarchical tree structure of folders with files in them. You often don't know what a developer might need to change or has changed, but the version control system does. Each check-in is tagged with who made the change and what the person changed within the code.
Instead of using inefficient techniques such as file locking, a version control system handles concurrent check-ins, allowing two programmers to commit code at the same time. [..] Another aspect of a version control system is the ability to branch and merge code built independently.
This is very useful if you are writing code on a part of an application that could conflict with another part written by another team.
NEW QUESTION # 273 
Refer to the exhibit. A developer is part of a team that is working on an open-source project in which source code is hosted in a public GitHub repository. While the application was built, security concerns were addressed by encrypting the credentials on the server. After a few months, the developer realized that a hacker managed to gain access to the account. The exhibit contains part of the source code for the login process. Why was the attacker able to access the developer's account?
- A. The encoded credentials were available in the source code.
- B. The credentials were encrypted in the source code.
- C. An SSL certificate was used instead of the TLS protocol to authenticate.
- D. The application was not encrypting the communication with the server.
Answer: A
Explanation:
The exhibit shows that the credentials are base64 encoded and included in the source code. Base64 encoding is not a secure method of protecting credentials as it can be easily decoded. Therefore, an attacker who gains access to the source code can decode the credentials and gain unauthorized access to the account. Proper security practices should involve storing credentials securely, such as using environment variables or secure vaults, and not hardcoding them in the source code.
References:
* OWASP - Storing Passwords Securely
* Cisco DevNet Associate Certification Guide
NEW QUESTION # 274
What is the purpose of a firewall in application deployment?
- A. forwards traffic to a pool of instances of the application
- B. adds TLS support to an application that does not support it natively
- C. limits traffic to only ports required by the application
- D. provides translation for an application's hostname to its IP address
Answer: C
Explanation:
Firewalls are used to control incoming and outgoing network traffic based on predetermined security rules, primarily by limiting traffic to only the necessary ports for an application.
* Port Filtering: Firewalls can block or allow traffic based on port numbers, thus limiting exposure to only those ports required by the application, enhancing security.
* Security: This helps to protect the application from unauthorized access and potential attacks by reducing the attack surface.
Reference: Cisco DevNet Associate Certification Guide, Chapter on Security Fundamentals and Firewalls.
NEW QUESTION # 275
Drag and Drop Question
Refer to the exhibit. Drag and drop the code from the bottom onto the blanks in the code to construct a cURL command using the Cisco DNA Center API. which will provide the details of a WLAN controller with Id af397748444. Not at options are used.
Answer:
Explanation:
Explanation:
The correct answer is "/network-device/{id}/wireless-info" to return the wireless LAN controller info with the given device ID.
URL: /dna/intent/api/v1/network-device/{id}/wireless-info
https://developer.cisco.com/docs/dna-center/api/1-3-3-x/
NEW QUESTION # 276
An engineer needs to retrieve a list of locally available Firepower Threat Defense upgrade packages by using the Firepower Management Center REST API. The engineer uses a GET request with the URL:
/api/fmc_platform/v1/updates/upgradepackages/f413afeb-e6f6-75f4-9169-6d9bd49s625e What does "f413afeb-e6f6-75f4-9169-6d9bd49s625e" represent?
- A. object UUID
- B. domain UUID
- C. package UUID
- D. container UUID
Answer: C
Explanation:
"GET upgradepackages
Request Type: GET
Description: Retrieves a list of locally available Firepower Threat Defense upgrade packages, including major upgrades, maintenances release upgrades, and hotfixes.
URL: /api/fmc_platform/v1/updates/upgradepackages
URL for GET by ID: /api/fmc_platform/v1/updates/upgradepackages/{package_UUID}" Source:
https://www.cisco.com/c/en/us/td/docs/security/firepower/640/api/REST/Firepower_Management_ Center_REST_API_Quick_Start_Guide_640/Objects_In_The_REST_API.html
NEW QUESTION # 277
Fill in the blanks to complete the python script to retrieve a list of network devices using the Cisco DNA center API.
Answer:
Explanation:
"GET", headers, payload
Explanation
Solution as below.
NEW QUESTION # 278
Which CI/CD component allows for the storing of code packages and enables the testing of the same code that is running on the live system?
- A. ITSM
- B. Jira
- C. Git
- D. Artifactory
Answer: D
Explanation:
Git is used for source code and Artifactory is used for the binaries which go with the source code.
NEW QUESTION # 279
What are the two principles of an infrastructure as code environment? (Choose two)
- A. Complete complex systems must be able to be built from reusable infrastructure definitions.
- B. Service overlap is encouraged to cater for unique environment needs.
- C. Environments must be provisioned consistently using the same inputs.
- D. Components are coupled, and definitions must be deployed for the environment to function.
- E. Redeployments cause varying environment definitions.
Answer: A,C
NEW QUESTION # 280
Refer to the exhibit.
Fill in the blank to complete the query parameter and value so that the result set is returned in reverse chronological order (most recent first) based on when message were entered.
Answer:
Explanation:
?sortBy=lastactivity
NEW QUESTION # 281
Which two NETCONF operations cover the RESTCONF GET operation? (Choose two.)
- A. <get-update>
- B. <edit>
- C. <get>
- D. <modify-config>
- E. <get-config>
Answer: C,E
Explanation:
NETCONF - Operations
<get> = Retrieve running configuration and device state information
<get-config> = Retrieve all or part of specified configuration data store
<edit-config> = Loads all or part of a configuration to the specified data store
<copy-config> = Replace an entire configuration data store with another
<delete-config> = Delete a configuration data store
<commit> = Copy candidate data store to running data store
<lock>/unlock> = Lock or unlock the entire configuration data store system
<close-session> = Graceful termination of NETCONF session
<kill-session> = Forced termination of NETCONF session
NEW QUESTION # 282
Which two protocols are used to apply a configuration change on a Cisco IOS XE device? (Choose two)
- A. RESTCONF
- B. CDP
- C. HSRP
- D. NETCONF
- E. CCX
Answer: A,D
NEW QUESTION # 283
Drag and drop the code snippets from the bottom to the blanks in the code to test the API response through the Python unittest library. Not all options are used.
Answer:
Explanation:
Explanation
Graphical user interface, text Description automatically generated
NEW QUESTION # 284
How does a developer create and switch to a new branch called 'my-bug--fix', to develop a product fix?
- A. git branch -b my-bug-fix
- B. git checkout -my-bug-fix
- C. git check -b my-bug-fix
- D. git branch my -bug -fix
Answer: A
NEW QUESTION # 285
Refer to the exhibit.
A network engineer uses model-driven programmability to monitor and perform changes on the network. The network engineer decides to use the NETCONF RPC message to complete one of their tasks. What is accomplished by sending the RPC message?
- A. All the YANG capabilities supported by the device are returned.
- B. The running-config of the device is returned.
- C. A list of interface names is returned.
- D. The name of each interface is reset to a default name.
Answer: B
NEW QUESTION # 286
Drag and drop the Python code from the left onto the correct step on the right to call a REST API.
Answer:
Explanation:
NEW QUESTION # 287
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?
- A. Database credentials should be accessed by using environment variables defined at runtime.
- B. During logging, debugging should be disabled for the webhook message.
- C. Hashing the credentials in the database is not secure enough; the credentials should be encrypted.
- D. During the transport of webhook messages, the credentials could be unencrypted and leaked.
Answer: D
NEW QUESTION # 288
Drag and drop elements of the RESTCONF protocol stack from the left onto the correct description on the right. Not all elements on the left are used.
Answer:
Explanation:
Explanation
1 - B, 2 - E, 3 - F
NEW QUESTION # 289
......
The DevNet Associate Exam certification exam is an important step for professionals who are looking to gain credibility and recognition in the industry. DevNet Associate Exam certification is recognized globally and can help individuals to stand out in a competitive job market. DevNet Associate Exam certification also helps individuals to demonstrate their expertise in software development for Cisco platforms and can lead to career advancement opportunities.
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