Cisco 200-901 Online Practice Questions and Exam Preparation

Cisco 200-901 Online Questions & Answers

• Question 111:

  Refer to the exhibit.

  

  Which API is called when the REMOTE TU sends a TCONNECT Response to the LOCAL TU?

  A. TCONNECT completion
  B. TCONNECT request
  C. TCONNECT indication
  D. TCONNECT confirm
  D. TCONNECT confirm

  ---

  The TCONNECT protocol is part of the OSI transport layer, where TCONNECT confirm is the API called when the remote transport user (TU) responds to a connection request from the local TU. TCONNECT confirm: This is the final step in establishing a transport connection, where the remote TU confirms the connection request from the local TU. Sequence: The sequence typically involves TCONNECT request, TCONNECT indication, TCONNECT response, and finally TCONNECT confirm. OSI Transport Protocols: OSI Transport Layer

• Question 112:

  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?

  A. continuous delivery
  B. version control
  C. continuous integration
  D. continuous deployment
  C. continuous integration

  ---

  Continuous Integration (CI) is a DevOps practice where developers frequently merge their code changes into a central repository. This practice aims to detect integration bugs as quickly as possible and improve the quality of the software. CI involves running automated tests and builds, ensuring that new code changes do not break the existing functionality. In the given scenario, the group of developers wants to deliver release-ready code and run automated tests frequently, which aligns with the principles of Continuous Integration. References: Atlassian - What is Continuous Integration? Cisco DevNet Associate Certification Guide

• Question 113:

  What is a characteristic of RPC APIs compared to REST APIs?

  A. Authentication is done over provisions for the service caller and vice versa for RPC API, and REST API uses HTTP headers for authentication.
  B. All communications between the client and server must be stateless for RPC API, and REST API is stateful.
  C. The architecture model for RPC API is resource-focused, and REST API is procedure-focused.
  D. The data payload must be in JSON format for RPC API, and REST API allows JSON and XML formats.
  A. Authentication is done over provisions for the service caller and vice versa for RPC API, and REST API uses HTTP headers for authentication.

  ---

  RPC (Remote Procedure Call) APIs and REST (Representational State Transfer) APIs have different approaches to communication and authentication. RPC APIs: Authentication can be more complex and is often embedded within the service calls themselves, sometimes requiring specific provisions for the caller and the service. REST APIs: Authentication typically relies on standardized methods such as HTTP headers, including Basic Auth, OAuth tokens, or API keys, making it more straightforward and standardized across different services. References: Cisco DevNet Documentation - APIs Cisco DevNet Associate Certification Guide

• Question 114:

  Refer to the exhibit.

  

  The sequence diagram shows a RESTful API call. Which step and response will represent the behavior of the REST API call to be synchronous?

  A. POST/discovery/ when there is a slot available and get the response from the POST call with the discovery details.
  B. GET/discovery/ when the discovery is finished and get the response from the GET call with the discovery requirements.
  C. POST/discovery?discoveryid= when the discovery is created and get the response from the POST call with the discovery details.
  D. PUT/discovery/ when the discovery is created and get the response of the discovery when it is updated.
  C. POST/discovery?discoveryid= when the discovery is created and get the response from the POST call with the discovery details.

• Question 115:

  What should a CI/CD pipeline aim to achieve?

  A. to require minimal manual interaction
  B. to allow manual testing before deployment
  C. to support new deployments on a fixed monthly schedule
  D. to provide a documented process for feedback
  A. to require minimal manual interaction

• Question 116:

  How do the processes used by the Agile methodology compare with the processes used by the Lean methodology?

  A. Agile concentrates on optimizing the development process, and Lean concentrates on optimizing the production process.
  B. Agile and Lean concentrate on optimizing the production process.
  C. Agile and Lean concentrate on optimizing the development process.
  D. Agile concentrates on optimizing the production process, and Lean concentrates on optimizing the development process.
  A. Agile concentrates on optimizing the development process, and Lean concentrates on optimizing the production process.

• Question 117:

  Which standard supported by Cisco IOS XE and Cisco NX-OS is used for automating the configuration of multiple devices across a network?

  A. SNMP - YANG
  B. SYSLOG - YANG
  C. CLI - YANG
  D. NETCONF - YANG
  D. NETCONF - YANG

  ---

  NETCONF (Network Configuration Protocol) is a standard used for network device configuration, and it utilizes YANG (Yet Another Next Generation) as a data modeling language. Cisco IOS XE and Cisco NX-OS support NETCONF and YANG to automate the configuration and management of network devices across a network. YANG defines the data models, while NETCONF provides the protocol to manipulate these models. References: Cisco DevNet Documentation - NETCONF and YANG IETF RFC 6241 - NETCONF Protocol IETF RFC 6020 - YANG Data Modeling Language

• Question 118:

  When a Cisco IOS XE networking device is configured by using RESTCONF, what is the default data encoding method?

  A. application/yaml-data+json
  B. application/yang-data+json
  C. application/xml-data+json
  D. application/json-data+xml
  B. application/yang-data+json

  ---

  RESTCONF is a HTTP-based protocol that uses the REST architectural style to enable the manipulation of data on a network device. It is designed to work with data models defined using the YANG data modeling language, and the default data encoding method for RESTCONF is application/yang-data+json.

• Question 119:

  Refer to the exhibit.

  

  An engineer is comparing two files by using the unified diff format. Which cade snippet belongs to the new.py file?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

  ---

  And that is because of the line number which is present in front of the line( which represent the line number in the modified file(new.py), also the + from the diff shows which text is belonging to the last version of the file(new.py)) B is not correct because in the new file on line 21 it is "def print_devices" C is not correct because it was only present on the functions.py file and it was removed on the new. py, based on the diff command output. D is not correct because line 66 of the new.py file is "response=get_devices_list(geaders,{})"

• Question 120:

  Refer to the exhibit.

  

  A developer creates a script to obtain a list of devices by using the Cisco DNA Center API. The remote server authorizes the request only if an authentication token is supplied in the headers. A function named get_auth_token() must retrieve a valid token by using HTTP Basic Authentication. Which code must be added to complete the get_auth_token() function?

  A. resp = requests.post(url, auth=HTTPBasicAuth(DNAC_USER, DNAC_PASSWORD)) token = resp.json()['Token'] return token
  B. resp = requests.post(url, auth=(DNAC_USER, DNAC_PASSWORD)) token = resp.json ()['Token'] return token
  C. resp = http.post(url, auth=HTTPBasicAuth(DNAC_USER, DNAC_PASSWORD)) token = resp.json()['Token'] return token
  D. resp = http.post(url, auth=(DNAC_USER, DNAC_PASSWORD)) token = resp.json()['Token'] return token
  A. resp = requests.post(url, auth=HTTPBasicAuth(DNAC_USER, DNAC_PASSWORD)) token = resp.json()['Token'] return token