View Full Cisco CCNP Data Center 300-635 Exam Dumps and Practice Test Dumps

 

Question 121.

Which Cisco UCS concept allows a server’s identity and operational settings to be defined independently of the physical blade or rack server?

1. Service Profile
   2. VLAN Pool
   3. Endpoint Group
   4. Contract

Correct Answer: 1

Explanation:

A Cisco UCS Service Profile defines the identity, firmware policies, network settings, storage settings, boot order, and other operational characteristics associated with a server. Because the profile is logically separate from the physical hardware, it can be associated with another compatible server when hardware is replaced or workloads are moved. This supports policy-driven infrastructure and improves consistency. VLAN pools, endpoint groups, and contracts are associated with other networking constructs, particularly Cisco ACI. Service Profiles are important to automation because they can be created, modified, and associated programmatically through UCS management interfaces.

Question 122.

Which Cisco UCS object is commonly used to define reusable settings that can be applied to multiple Service Profiles?

1. Packet capture
   2. Policy
   3. ARP entry
   4. DNS zone

Correct Answer: 2

Explanation:

Cisco UCS uses policies to define reusable configuration settings that can be referenced by Service Profiles. Examples include BIOS policies, boot policies, firmware policies, network control policies, adapter policies, and maintenance policies. Reusing policies reduces duplicated configuration and helps ensure consistency across servers. If a policy changes, associated profiles may inherit updated behavior depending on the configuration model. ARP entries and DNS zones are unrelated, while packet capture is a troubleshooting function. Policy-based design is well suited to automation because scripts can create a standard policy once and apply it to many server definitions.

Question 123.

Which benefit is provided by a Cisco UCS Service Profile template?

1. It captures packet data from a server
   2. It replaces all network routing
   3. It provides a reusable definition for creating consistent Service Profiles
   4. It disables server firmware updates

Correct Answer: 3

Explanation:

A Service Profile template allows administrators and automation systems to create multiple Service Profiles using a common standardized definition. This improves consistency because server identity, boot policies, firmware policies, network connectivity, and other characteristics can be derived from the same template. Templates reduce manual configuration and simplify large-scale deployment. They do not perform packet capture or replace routing. Depending on the template type and UCS behavior, changes to a template can also affect derived profiles, making template governance and testing important in production environments.

Question 124.

Which Cisco UCS API format is traditionally associated with programmatic access to UCS Manager?

1. CSV only
   2. YAML only
   3. Protocol Buffers only
   4. XML

Correct Answer: 4

Explanation:

Cisco UCS Manager traditionally exposes an XML-based API that represents UCS configuration and operational data through managed objects. Automation tools can submit XML requests to query, create, modify, or remove objects. Cisco SDKs may provide higher-level programming abstractions so developers do not need to manually construct every XML payload. JSON and REST are common in other Cisco platforms, but UCS Manager’s classic programmable interface is closely associated with XML. Understanding the underlying managed-object model helps engineers troubleshoot SDK behavior and design effective automation.

Question 125.

What is the primary purpose of the Cisco UCS Python SDK?

1. Provide Python abstractions for interacting with UCS Manager programmatically
   2. Replace UCS Manager with a local database
   3. Provide only packet-capture functionality
   4. Configure ACI contracts directly

Correct Answer: 1

Explanation:

The Cisco UCS Python SDK provides Python classes and methods that simplify programmatic interaction with UCS Manager. Rather than constructing every XML request manually, developers can work with managed objects and higher-level SDK functions. Automation can use the SDK to query inventory, create policies, manage Service Profiles, and perform other administrative tasks. The SDK does not replace UCS Manager and is not a packet-capture tool. It is also distinct from the APIs used to automate Cisco ACI. SDKs improve productivity by abstracting low-level API details while preserving access to the underlying infrastructure model.

Question 126.

Which programming practice is most appropriate when a UCS automation script must use credentials for authentication?

1. Commit the username and password to a public Git repository
   2. Retrieve credentials from a secure secret store or protected environment source
   3. Print the password to the console for troubleshooting
   4. Store the password in a code comment

Correct Answer: 2

Explanation:

Automation credentials should be stored outside normal source code and retrieved securely at runtime. Options include protected environment variables, encrypted configuration, a secrets-management platform, or an approved credential vault. Hardcoding secrets in code or repositories creates exposure because source-control history can preserve them even after removal. Console output and comments are also unsafe places for passwords. Automation accounts should follow least privilege and have only the permissions required for the task. Secure credential handling is essential because infrastructure automation often has broad administrative capabilities.

Question 127.

Which Python feature helps ensure that a UCS Manager session is disconnected even if an error occurs during script execution?

1. A finally block
   2. A continue statement
   3. A list comprehension only
   4. A lambda function

Correct Answer: 1

Explanation:

A finally block runs whether or not an exception occurs inside the associated try block. This makes it useful for cleanup operations such as disconnecting from UCS Manager, closing files, or releasing other resources. Without cleanup logic, failed automation might leave sessions open unnecessarily. continue affects loop execution, while list comprehensions and lambda functions serve different purposes. Reliable automation should include cleanup and exception handling because infrastructure APIs and network connections can fail for many reasons.

Question 128.

Which approach is best when an automation script needs to manage hundreds of similar UCS objects using the same logic?

1. Duplicate the same code hundreds of times
   2. Use reusable functions and loops
   3. Manually configure each object
   4. Remove input validation

Correct Answer: 2

Explanation:

Reusable functions and loops allow the same logic to be applied across many UCS objects without copying code repeatedly. A function can encapsulate tasks such as validating input, creating a policy, or querying a Service Profile, while a loop can process hundreds of objects efficiently. This approach improves maintainability and reduces the chance of inconsistent code changes. Manual configuration does not scale, and removing validation increases risk. Modular design is especially important in data center automation because infrastructure workflows often operate on large inventories.

Question 129.

Which ACI object contains one or more application EPGs and organizes them as part of an application definition?

1. Application Profile
   2. Fabric Node
   3. Interface Policy Group
   4. VLAN Namespace only

Correct Answer: 1

Explanation:

An Application Profile logically groups Endpoint Groups that belong to an application within an ACI tenant. EPGs can represent application tiers such as web, application, or database services, while contracts define how those groups communicate. This logical model allows ACI to focus on application policy rather than only traditional network topology. Application Profiles and their child EPGs are represented as managed objects in the APIC model, which means they can be created and modified through automation APIs.

Question 130.

Which Cisco ACI object is used to define the Layer 3 routing context that can be associated with Bridge Domains?

1. Contract
   2. VRF
   3. EPG only
   4. Filter only

Correct Answer: 2

Explanation:

A VRF provides the Layer 3 routing context in Cisco ACI. Bridge Domains are associated with a VRF so their subnets participate in the appropriate routing domain. Multiple Bridge Domains can share the same VRF while remaining separate Layer 2 forwarding domains. Contracts control communication policy between EPGs, while filters identify permitted traffic characteristics. When automating ACI, scripts may create the VRF first, then Bridge Domains, subnets, Application Profiles, EPGs, and contracts in the required hierarchy.

Question 131.

Which Cisco ACI object specifies traffic characteristics such as protocol and port that can be referenced by a contract?

1. Filter
   2. Tenant only
   3. Bridge Domain only
   4. Application Profile only

Correct Answer: 1

Explanation:

An ACI filter defines traffic-matching criteria such as Ethernet type, IP protocol, source port, or destination port. Contracts use subjects that reference filters to define which traffic is permitted between EPGs. This separates the communication relationship from the specific traffic details. Tenants, Bridge Domains, and Application Profiles serve different structural roles. In API automation, filters can be created as managed objects and then referenced by contract subjects, enabling consistent application-security policies to be deployed programmatically.

Question 132.

What is the primary purpose of an ACI contract subject?

1. Assign physical interfaces to leaf switches
   2. Associate policy rules and filters within a contract
   3. Create an API token
   4. Define a UCS Service Profile

Correct Answer: 2

Explanation:

A contract subject is a component of an ACI contract that associates communication policy with one or more filters. The subject provides structure within the contract and can determine how traffic matching those filters is handled. EPGs consume or provide the overall contract. Physical interface assignment, API authentication, and UCS Service Profiles are separate concepts. Automation scripts building application connectivity often create filters, subjects, contracts, and EPG relationships in a defined sequence.

Question 133.

Which API query is most appropriate when an engineer wants to retrieve all managed objects of a particular ACI class?

1. Class query
   2. DNS query
   3. ARP request
   4. ICMP echo

Correct Answer: 1

Explanation:

A class query retrieves all managed objects belonging to a specified class in the Cisco ACI object model. This is useful when an automation workflow needs to discover all tenants, EPGs, Bridge Domains, contracts, or other object types. A distinguished-name query instead targets one specific object in the management tree. DNS, ARP, and ICMP are network protocols and do not query the APIC managed-object model. Class queries are useful for inventory, compliance checks, and bulk analysis of fabric configuration.

Question 134.

Why should an automation script apply filtering to a broad ACI class query whenever possible?

1. To disable authentication
   2. To reduce unnecessary response data and processing
   3. To convert APIC into a Nexus switch
   4. To prevent all HTTP errors

Correct Answer: 2

Explanation:

Filtering a broad class query can reduce the number of objects returned by APIC, which lowers network traffic, parsing effort, and memory usage. This is especially valuable in large fabrics where a class may contain thousands of objects. Filtering does not remove authentication or prevent every possible API error. It simply allows the client to request a more focused subset of data. Efficient querying is an important automation practice because excessive API calls and large responses can negatively affect both scripts and controllers.

Question 135.

Which model-driven interface uses HTTP and YANG-modeled data rather than NETCONF RPC messages?

1. RESTCONF
   2. TFTP
   3. Syslog
   4. CDP

Correct Answer: 1

Explanation:

RESTCONF exposes YANG-modeled data using HTTP-based operations, commonly with JSON or XML representations. It offers a web-oriented alternative to NETCONF while retaining the structure and validation benefits provided by YANG models. NETCONF typically uses RPC messages over SSH and XML encoding. TFTP transfers files, Syslog transports event messages, and CDP discovers neighboring Cisco devices. RESTCONF is useful to automation developers who prefer REST-style methods while working with model-driven network data.

Question 136.

Which NETCONF datastore typically represents the configuration currently active on a network device?

1. candidate only
   2. startup only
   3. archive only
   4. running

Correct Answer: 4

Explanation:

The running datastore represents the configuration currently active on a NETCONF-capable device. Some platforms also support a candidate datastore, where changes can be prepared before being committed to running configuration, and a startup datastore used for boot-time configuration. Supported capabilities vary by device. Understanding datastore behavior is important because automation must know whether an edit immediately affects production state or requires a separate commit operation.

Question 137.

What is the benefit of locking a NETCONF datastore before making a coordinated set of changes?

1. It can prevent conflicting edits from other NETCONF sessions during the operation
   2. It increases interface bandwidth
   3. It bypasses authorization
   4. It converts XML into JSON automatically

Correct Answer: 1

Explanation:

Locking a NETCONF datastore can prevent other sessions from making conflicting changes while an automation workflow is performing a coordinated update. This helps preserve consistency when several related configuration operations must be treated as a unit. Locking support depends on the device and datastore capabilities. It does not improve bandwidth or bypass security controls. After the changes are complete, the lock should be released promptly so other authorized workflows can proceed.

Question 138.

Which NETCONF operation is commonly used to retrieve configuration and state data from a device?

1. <get>
   2. <delete-route>
   3. <ping>
   4. <format-disk>

Correct Answer: 1

Explanation:

The NETCONF <get> operation retrieves configuration and operational state data. Filters can be used to limit the response to relevant parts of the data model. NETCONF also supports operations such as <get-config> and <edit-config> depending on the task. The other listed operations are not standard NETCONF RPCs for general data retrieval. Structured retrieval enables automation systems to work with predictable model-driven data rather than parsing CLI output.

Question 139.

Which practice best helps detect formatting, syntax, and simple logic problems in automation code before production deployment?

1. Automated linting, validation, and testing in CI
   2. Remove all tests before merging
   3. Make changes directly on production systems
   4. Disable source control

Correct Answer: 1

Explanation:

Continuous integration can automatically run linters, syntax checks, unit tests, schema validation, and other quality controls whenever automation code changes. This provides rapid feedback and prevents many defects from reaching production. It does not replace lab testing or human review, but it creates a consistent minimum quality standard. Direct production changes and disabling source control remove valuable safeguards. Because infrastructure automation can affect many devices rapidly, catching defects early is particularly important.

Question 140.

An infrastructure team wants production changes to be automatically deployed only after tests pass and required approvals are complete. Which practice best supports this workflow?

1. Manual configuration without source control
   2. Store passwords directly in playbooks
   3. CI/CD pipeline with controlled deployment gates
   4. Disable audit logging during deployment

Correct Answer: 3

Explanation:

A CI/CD pipeline can automatically validate automation code and then promote approved changes through deployment stages. Tests, policy checks, peer review, and approval gates can be required before production execution. This creates a repeatable and auditable process and reduces reliance on ad hoc manual procedures. Credentials should be obtained from secure secret-management systems, and audit logs should remain enabled. Controlled delivery pipelines are especially valuable in data center environments because infrastructure-as-code changes may affect many systems simultaneously.