{"id":23888,"date":"2026-09-28T11:04:17","date_gmt":"2026-09-28T11:04:17","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=23888"},"modified":"2026-09-28T11:04:17","modified_gmt":"2026-09-28T11:04:17","slug":"cisco-ccnp-data-center-300-635-practice-test-questions-and-exam-dumps-part2-q21-40","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccnp-data-center-300-635-practice-test-questions-and-exam-dumps-part2-q21-40\/","title":{"rendered":"Cisco CCNP Data Center 300-635 Practice Test Questions and Exam Dumps Part2 Q21-40"},"content":{"rendered":"

View Full <\/b>Cisco CCNP Data Center 300-635 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/h2>\n

 <\/p>\n

Question 21.<\/b><\/p>\n

Which Cisco Nexus capability provides a programmatic interface that allows applications to send CLI-style commands using HTTP or HTTPS?<\/b><\/p>\n

    \n
  1. <\/b> NX-API<\/span>
    \n<\/span>2.<\/b> CDP<\/span>
    \n<\/span>3.<\/b> HSRP<\/span>
    \n<\/span>4.<\/b> UDLD<\/span><\/li>\n<\/ol>\n

    Correct Answer: 1<\/b><\/p>\n

    Explanation:<\/b><\/p>\n

    NX-API provides a programmable interface on supported Cisco Nexus switches and allows applications to execute commands through HTTP or HTTPS rather than relying solely on an interactive CLI session. This is useful for automation because scripts can send structured requests and receive machine-readable responses. Depending on the platform and NX-API capability, responses may be returned in JSON or XML. CDP discovers neighboring Cisco devices, HSRP provides first-hop redundancy, and UDLD helps detect certain unidirectional link conditions. NX-API is particularly useful when organizations want to automate Nexus operational queries or configuration tasks without screen scraping traditional terminal sessions.<\/span><\/p>\n

    Question 22.<\/b><\/p>\n

    Which advantage does JSON output provide when using NX-API from a Python automation script?<\/b><\/p>\n

      \n
    1. <\/b> It automatically encrypts the network connection<\/span>
      \n<\/span>2.<\/b> It can be parsed into structured Python objects such as dictionaries and lists<\/span>
      \n<\/span>3.<\/b> It eliminates the need for authentication<\/span>
      \n<\/span>4.<\/b> It guarantees that all commands are idempotent<\/span><\/li>\n<\/ol>\n

      Correct Answer: 2<\/b><\/p>\n

      Explanation:<\/b><\/p>\n

      JSON provides structured key-value data that can be parsed directly into Python dictionaries and lists. This is much more reliable than trying to extract information from human-oriented CLI text using string manipulation. A script can reference specific keys, iterate through returned lists, compare values, and make decisions based on structured output. JSON itself does not encrypt the connection, remove authentication requirements, or guarantee idempotency. Transport security is provided by mechanisms such as HTTPS, while idempotency depends on how the automation task is designed. Structured API responses are one of the major advantages of using programmable interfaces such as NX-API.<\/span><\/p>\n

      Question 23.<\/b><\/p>\n

      A Python script sends a request to an API endpoint that does not exist and receives HTTP status code 404. What does this normally mean?<\/b><\/p>\n

        \n
      1. <\/b> Authentication succeeded<\/span>
        \n<\/span>2.<\/b> A new resource was created<\/span>
        \n<\/span>3.<\/b> The requested resource could not be found<\/span>
        \n<\/span>4.<\/b> The server completed the request with no response body<\/span><\/li>\n<\/ol>\n

        Correct Answer: 3<\/b><\/p>\n

        Explanation:<\/b><\/p>\n

        HTTP status code 404 normally means that the requested resource or endpoint could not be found. This may occur because the URL is incorrect, the API path has changed, the requested object does not exist, or the script is addressing the wrong controller endpoint. A successful request usually returns a 2xx status code. Authentication problems are commonly associated with codes such as 401 or 403, depending on the situation. Automation scripts should check status codes before processing response bodies and should log enough information to help developers distinguish malformed URLs, missing resources, authentication problems, and server-side failures.<\/span><\/p>\n

        Question 24.<\/b><\/p>\n

        Which HTTP status code most commonly indicates that the client is authenticated but does not have permission to perform the requested operation?<\/b><\/p>\n

          \n
        1. <\/b> 200<\/span>
          \n<\/span>2.<\/b> 201<\/span>
          \n<\/span>3.<\/b> 404<\/span>
          \n<\/span>4.<\/b> 403<\/span><\/li>\n<\/ol>\n

          Correct Answer: 4<\/b><\/p>\n

          Explanation:<\/b><\/p>\n

          HTTP status code 403 indicates that the server understood the request but refuses to authorize the requested action. This commonly occurs when the client has authenticated successfully but lacks the required role or permissions. A 401 response generally relates to missing or failed authentication. A 200 response usually indicates successful processing, while 201 commonly indicates that a resource was successfully created. A 404 indicates that a resource could not be found. Automation developers should distinguish authentication errors from authorization errors because the remediation is different: invalid credentials require authentication changes, whereas 403 errors often require role or permission adjustments.<\/span><\/p>\n

          Question 25.<\/b><\/p>\n

          Which Cisco platform provides cloud-based management and API capabilities for Cisco UCS and other infrastructure resources?<\/b><\/p>\n

            \n
          1. <\/b> Cisco Intersight<\/span>
            \n<\/span>2.<\/b> Cisco ISE<\/span>
            \n<\/span>3.<\/b> Cisco Unified Communications Manager<\/span>
            \n<\/span>4.<\/b> Cisco Webex Calling<\/span><\/li>\n<\/ol>\n

            Correct Answer: 1<\/b><\/p>\n

            Explanation:<\/b><\/p>\n

            Cisco Intersight is a cloud-based operations and management platform that can manage supported Cisco infrastructure, including UCS environments, and provides APIs that enable programmatic interaction. Automation can use Intersight APIs for tasks such as inventory retrieval, policy management, server-profile operations, and infrastructure monitoring. Cisco ISE focuses on identity and network access control, while Unified Communications Manager and Webex Calling focus on collaboration. Intersight is particularly important in modern data center automation because it provides a centralized, API-driven approach to infrastructure management that can integrate with automation and orchestration workflows.<\/span><\/p>\n

            Question 26.<\/b><\/p>\n

            Which authentication mechanism is commonly associated with Cisco Intersight API requests?<\/b><\/p>\n

              \n
            1. <\/b> Plaintext credentials in every URL<\/span>
              \n<\/span>2.<\/b> API keys with signed requests<\/span>
              \n<\/span>3.<\/b> Anonymous access only<\/span>
              \n<\/span>4.<\/b> SNMP community strings<\/span><\/li>\n<\/ol>\n

              Correct Answer: 2<\/b><\/p>\n

              Explanation:<\/b><\/p>\n

              Cisco Intersight APIs commonly use API keys and request signing to authenticate programmatic clients. The client possesses a key identifier and associated secret or private key material used to sign requests. This approach is more appropriate for automation than repeatedly embedding usernames and passwords in scripts. API credentials should be stored securely and assigned only the permissions required for the automation task. SNMP community strings are unrelated to Intersight REST authentication, and anonymous access would not be appropriate for sensitive infrastructure management. Secure API credential handling is essential because compromised automation keys could provide extensive infrastructure access.<\/span><\/p>\n

              Question 27.<\/b><\/p>\n

              A developer wants to retrieve only selected fields from a large API response whenever the API supports that capability. What is the primary benefit?<\/b><\/p>\n

                \n
              1. <\/b> It can reduce response size and processing overhead<\/span>
                \n<\/span>2.<\/b> It disables authentication requirements<\/span>
                \n<\/span>3.<\/b> It converts REST into SNMP<\/span>
                \n<\/span>4.<\/b> It guarantees configuration success<\/span><\/li>\n<\/ol>\n

                Correct Answer: 1<\/b><\/p>\n

                Explanation:<\/b><\/p>\n

                Requesting only the fields required by an automation workflow can reduce network bandwidth, parsing time, and memory usage. This is especially useful when APIs return large inventory or operational datasets containing many attributes that the script does not need. Depending on the platform, APIs may support query parameters for filtering, field selection, pagination, or sorting. Reducing response size does not alter authentication or guarantee that later configuration operations will succeed. Efficient API usage is an important skill in data center automation because scripts may need to interact with hundreds or thousands of infrastructure objects.<\/span><\/p>\n

                Question 28.<\/b><\/p>\n

                Which API feature is used when a server returns a large dataset in smaller groups of records that the client retrieves sequentially?<\/b><\/p>\n

                  \n
                1. <\/b> Encapsulation<\/span>
                  \n<\/span>2.<\/b> Fragmentation<\/span>
                  \n<\/span>3.<\/b> Pagination<\/span>
                  \n<\/span>4.<\/b> Serialization<\/span><\/li>\n<\/ol>\n

                  Correct Answer: 3<\/b><\/p>\n

                  Explanation:<\/b><\/p>\n

                  Pagination divides a large result set into smaller pages so a client does not need to retrieve every record in a single response. APIs may use page numbers, offsets, cursors, continuation tokens, or limits to control pagination. Automation scripts should detect whether additional pages exist and continue requesting data until the complete dataset has been retrieved when necessary. Failure to handle pagination can cause a script to process only the first portion of inventory data. Encapsulation and serialization are different programming concepts, while IP fragmentation is a networking function unrelated to API result management.<\/span><\/p>\n

                  Question 29.<\/b><\/p>\n

                  Which Python control structure is best suited for making one decision when a condition is true and another when it is false?<\/b><\/p>\n

                    \n
                  1. <\/b> if\/else<\/span>
                    \n<\/span>2.<\/b> import<\/span>
                    \n<\/span>3.<\/b> class only<\/span>
                    \n<\/span>4.<\/b> raise only<\/span><\/li>\n<\/ol>\n

                    Correct Answer: 1<\/b><\/p>\n

                    Explanation:<\/b><\/p>\n

                    The <\/span>if\/else<\/span> construct allows Python code to execute different blocks depending on whether a condition evaluates as true or false. In automation, it can be used to check HTTP status codes, compare a current configuration with a desired state, verify whether an object exists, or choose whether to create or update a resource. <\/span>import<\/span> loads modules, <\/span>class<\/span> defines a class, and <\/span>raise<\/span> generates an exception. Conditional logic is fundamental to automation because scripts frequently need to evaluate infrastructure state before determining the next action.<\/span><\/p>\n

                    Question 30.<\/b><\/p>\n

                    Which Python function is commonly used to convert a JSON-formatted response body into Python objects when using the <\/b>requests<\/b> library?<\/b><\/p>\n

                      \n
                    1. <\/b> response.close()<\/span>
                      \n<\/span>2.<\/b> response.json()<\/span>
                      \n<\/span>3.<\/b> response.delete()<\/span>
                      \n<\/span>4.<\/b> response.compile()<\/span><\/li>\n<\/ol>\n

                      Correct Answer: 2<\/b><\/p>\n

                      Explanation:<\/b><\/p>\n

                      The <\/span>response.json()<\/span> method attempts to parse a JSON-formatted response body and return corresponding Python objects such as dictionaries and lists. This allows a script to work directly with structured data returned by an API. The script should still verify that the request succeeded and ideally confirm that the content is expected before parsing. If the response contains invalid JSON, parsing can raise an exception. <\/span>response.close()<\/span> closes the response connection resources, while <\/span>delete()<\/span> and <\/span>compile()<\/span> are not methods used to parse a standard <\/span>requests<\/span> response. Proper parsing and validation are central to reliable API automation.<\/span><\/p>\n

                      Question 31.<\/b><\/p>\n

                      In an Ansible playbook, what is the primary purpose of an inventory?<\/b><\/p>\n

                        \n
                      1. <\/b> Define the managed hosts or groups targeted by automation<\/span>
                        \n<\/span>2.<\/b> Store packet captures<\/span>
                        \n<\/span>3.<\/b> Replace device APIs<\/span>
                        \n<\/span>4.<\/b> Create VLAN trunks automatically without a playbook<\/span><\/li>\n<\/ol>\n

                        Correct Answer: 1<\/b><\/p>\n

                        Explanation:<\/b><\/p>\n

                        An Ansible inventory identifies the systems that automation can manage and commonly organizes them into logical groups. The inventory can also associate variables with hosts or groups, such as connection parameters or environment-specific values. A playbook then targets selected hosts or groups from the inventory. Inventories may be static files or dynamically generated from external sources. They do not replace APIs and do not automatically perform configuration by themselves. Understanding the relationship among inventory, playbooks, tasks, modules, and variables is important when using Ansible for Cisco data center automation.<\/span><\/p>\n

                        Question 32.<\/b><\/p>\n

                        What is the primary purpose of an Ansible playbook?<\/b><\/p>\n

                          \n
                        1. <\/b> Provide only device inventory information<\/span>
                          \n<\/span>2.<\/b> Describe a sequence of automation tasks in YAML<\/span>
                          \n<\/span>3.<\/b> Function as a packet analyzer<\/span>
                          \n<\/span>4.<\/b> Replace Python interpreters<\/span><\/li>\n<\/ol>\n

                          Correct Answer: 2<\/b><\/p>\n

                          Explanation:<\/b><\/p>\n

                          An Ansible playbook is a YAML document that describes one or more plays containing automation tasks to be applied to selected hosts or groups. Playbooks can configure devices, query operational state, deploy policies, create objects, and orchestrate multi-step workflows. Modules perform the underlying operations, while variables and templates make the automation reusable. Inventory defines managed targets but does not replace the playbook. Ansible does not function as a packet analyzer, and it can use Python internally rather than replacing the language. Declarative and repeatable playbooks are valuable for managing infrastructure consistently.<\/span><\/p>\n

                          Question 33.<\/b><\/p>\n

                          Which file format is most commonly used to write Ansible playbooks?<\/b><\/p>\n

                            \n
                          1. <\/b> YAML<\/span>
                            \n<\/span>2.<\/b> JPEG<\/span>
                            \n<\/span>3.<\/b> MP3<\/span>
                            \n<\/span>4.<\/b> SQL only<\/span><\/li>\n<\/ol>\n

                            Correct Answer: 1<\/b><\/p>\n

                            Explanation:<\/b><\/p>\n

                            Ansible playbooks are normally written in YAML, a human-readable data-serialization format based on indentation and key-value structures. YAML makes playbooks relatively easy to read and review, but indentation must be handled carefully because spacing determines structure. Playbooks commonly contain keys such as <\/span>hosts<\/span>, <\/span>tasks<\/span>, <\/span>vars<\/span>, and module-specific arguments. JPEG and MP3 are media formats, while SQL is a database query language. Infrastructure automation engineers should be comfortable reading and validating YAML because syntax and indentation errors can prevent playbooks from executing correctly.<\/span><\/p>\n

                            Question 34.<\/b><\/p>\n

                            What is the primary advantage of using a Jinja2 template in network automation?<\/b><\/p>\n

                              \n
                            1. <\/b> It encrypts all credentials automatically<\/span>
                              \n<\/span>2.<\/b> It converts switches into controllers<\/span>
                              \n<\/span>3.<\/b> It allows configuration text to be generated dynamically from variables<\/span>
                              \n<\/span>4.<\/b> It replaces source control<\/span><\/li>\n<\/ol>\n

                              Correct Answer: 3<\/b><\/p>\n

                              Explanation:<\/b><\/p>\n

                              Jinja2 templates allow automation systems to generate configuration or structured text dynamically by substituting variables and applying logic such as loops and conditionals. This makes it possible to maintain one reusable template for many devices while supplying device-specific values such as hostnames, VLANs, interfaces, or IP addresses. Templates reduce duplicated configuration and improve consistency. They do not automatically encrypt credentials, replace source control, or turn devices into controllers. Jinja2 is commonly used with Ansible and Python-based automation workflows to transform structured input data into device-specific outputs.<\/span><\/p>\n

                              Question 35.<\/b><\/p>\n

                              Why is idempotency particularly valuable in an Ansible infrastructure workflow?<\/b><\/p>\n

                                \n
                              1. <\/b> The same playbook can be run repeatedly without introducing unnecessary duplicate changes<\/span>
                                \n<\/span>2.<\/b> It removes the need to test automation<\/span>
                                \n<\/span>3.<\/b> It eliminates authentication requirements<\/span>
                                \n<\/span>4.<\/b> It guarantees that every network device supports the same API<\/span><\/li>\n<\/ol>\n

                                Correct Answer: 1<\/b><\/p>\n

                                Explanation:<\/b><\/p>\n

                                Idempotency means that once the desired state has been achieved, rerunning the automation does not make unnecessary additional changes. This is highly valuable in Ansible because playbooks may run repeatedly for compliance, remediation, or deployment. An idempotent task can determine that a VLAN, policy, or object already exists in the correct state and report no change instead of recreating it. Idempotency improves predictability and reduces operational risk, but it does not eliminate testing or authentication. Whether a task is truly idempotent depends on the module and how the automation is designed.<\/span><\/p>\n

                                Question 36.<\/b><\/p>\n

                                Which approach is most appropriate for storing an Ansible password or API token that should not appear in plaintext inside a playbook repository?<\/b><\/p>\n

                                  \n
                                1. <\/b> Put it in a public README file<\/span>
                                  \n<\/span>2.<\/b> Add it to every task as plain text<\/span>
                                  \n<\/span>3.<\/b> Store it in an unencrypted Git commit<\/span>
                                  \n<\/span>4.<\/b> Use a protected secrets mechanism such as Ansible Vault or an external secret store<\/span><\/li>\n<\/ol>\n

                                  Correct Answer: 4<\/b><\/p>\n

                                  Explanation:<\/b><\/p>\n

                                  Sensitive credentials should be separated from ordinary source files and protected with a secrets-management solution. Ansible Vault can encrypt variables and files, while external secret stores can provide centralized access controls, auditing, and credential rotation. Plaintext credentials in Git are dangerous because repository history can preserve secrets even after they are removed from the latest version. Automation identities should also follow least privilege and have only the permissions necessary for the workflow. Secure secret handling is essential because playbooks are often shared, reviewed, and executed across many infrastructure systems.<\/span><\/p>\n

                                  Question 37.<\/b><\/p>\n

                                  Which Cisco ACI API query concept allows a developer to retrieve all objects belonging to a specific managed-object class rather than referencing one object by its distinguished name?<\/b><\/p>\n

                                    \n
                                  1. <\/b> Class query<\/span>
                                    \n<\/span>2.<\/b> ARP query<\/span>
                                    \n<\/span>3.<\/b> VLAN query only<\/span>
                                    \n<\/span>4.<\/b> TCP window query<\/span><\/li>\n<\/ol>\n

                                    Correct Answer: 1<\/b><\/p>\n

                                    Explanation:<\/b><\/p>\n

                                    A class query allows an ACI API client to retrieve objects belonging to a particular managed-object class. This is useful when automation needs to discover all instances of a type, such as tenants, endpoint groups, bridge domains, or another class supported by the ACI object model. In contrast, a distinguished-name query targets a specific object at a known location in the management information tree. Understanding class queries and DN-based queries helps developers navigate ACI efficiently and retrieve only the data needed for a workflow.<\/span><\/p>\n

                                    Question 38.<\/b><\/p>\n

                                    A developer wants to modify one attribute of an existing infrastructure object without unnecessarily replacing the entire resource. Which REST method is commonly associated with a partial update when supported?<\/b><\/p>\n

                                      \n
                                    1. <\/b> GET<\/span>
                                      \n<\/span>2.<\/b> PATCH<\/span>
                                      \n<\/span>3.<\/b> HEAD<\/span>
                                      \n<\/span>4.<\/b> OPTIONS only<\/span><\/li>\n<\/ol>\n

                                      Correct Answer: 2<\/b><\/p>\n

                                      Explanation:<\/b><\/p>\n

                                      PATCH is commonly associated with modifying part of an existing resource without replacing its entire representation. Some APIs instead use PUT or platform-specific POST behavior, so developers must follow the documentation for the specific Cisco platform. GET retrieves information, HEAD requests response headers without the full content, and OPTIONS can describe supported communication options. Automation engineers should not assume that every API implements REST methods identically. Understanding the exact semantics of each platform prevents unintended configuration changes.<\/span><\/p>\n

                                      Question 39.<\/b><\/p>\n

                                      Which development practice is most appropriate before merging a major data center automation change into a shared production branch?<\/b><\/p>\n

                                        \n
                                      1. <\/b> Review and test the code, then use version-control workflows such as pull requests<\/span>
                                        \n<\/span>2.<\/b> Commit untested changes directly to production<\/span>
                                        \n<\/span>3.<\/b> Remove all previous source history<\/span>
                                        \n<\/span>4.<\/b> Store credentials in the code so reviewers can test quickly<\/span><\/li>\n<\/ol>\n

                                        Correct Answer: 1<\/b><\/p>\n

                                        Explanation:<\/b><\/p>\n

                                        Testing and peer review reduce the risk that automation code will introduce widespread configuration problems. A pull-request or merge-request workflow allows other engineers to examine the changes, run automated tests, verify security considerations, and compare the new version with the previous one before it reaches the production branch. Infrastructure automation can affect many systems quickly, making disciplined source-control practices especially important. Removing history or committing untested changes undermines traceability. Credentials should never be included simply to make testing easier; secure test credentials or secret-management mechanisms should be used instead.<\/span><\/p>\n

                                        Question 40.<\/b><\/p>\n

                                        An automation script is designed to create a VLAN only if that VLAN does not already exist. Which principle does this behavior demonstrate?<\/b><\/p>\n

                                          \n
                                        1. <\/b> Packet encapsulation<\/span>
                                          \n<\/span>2.<\/b> Serialization<\/span>
                                          \n<\/span>3.<\/b> Idempotency<\/span>
                                          \n<\/span>4.<\/b> Fragmentation<\/span><\/li>\n<\/ol>\n

                                          Correct Answer: 3<\/b><\/p>\n

                                          Explanation:<\/b><\/p>\n

                                          The script demonstrates idempotency because repeated execution should leave the system in the same desired state without creating duplicate VLANs or unnecessary changes. The script first checks current state and only performs the creation operation when required. This pattern is important in infrastructure automation because workflows may be rerun after failures, during compliance checks, or as part of continuous deployment processes. Serialization refers to converting data into a storable or transferable representation, while fragmentation and encapsulation are networking concepts. Idempotent automation improves reliability, repeatability, and operational safety.<\/span><\/p>\n

                                           <\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Cisco CCNP Data Center 300-635 Exam Dumps and Practice Test Dumps   Question 21. Which Cisco Nexus capability provides a programmatic interface that allows applications to send CLI-style commands using HTTP or HTTPS? NX-API 2. CDP 3. HSRP 4. UDLD Correct Answer: 1 Explanation: NX-API provides a programmable interface on supported Cisco Nexus […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/23888"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=23888"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/23888\/revisions"}],"predecessor-version":[{"id":23889,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/23888\/revisions\/23889"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=23888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=23888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=23888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}