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

 

Question 341.

Which Git command downloads changes from a remote repository and integrates them into the current local branch?

1. git pull
   2. git tag
   3. git init
   4. git status

Correct Answer: 1

Explanation:

git pull retrieves changes from a configured remote repository and integrates them into the current local branch, typically by performing a fetch followed by a merge or rebase depending on configuration. In an infrastructure automation workflow, pulling before making new changes helps engineers work from an up-to-date codebase. git tag marks a specific revision, git init creates a new repository, and git status displays the current working-tree state. Teams should still resolve merge conflicts carefully and run tests after incorporating upstream changes.

Question 342.

Which Git command is used to copy an existing remote repository to a local workstation for the first time?

1. git merge
   2. git clone
   3. git commit
   4. git diff

Correct Answer: 2

Explanation:

git clone creates a local copy of an existing repository, including its files, commit history, and remote configuration. This is usually the first step when an engineer begins working on an established automation project. git merge combines branch histories, git commit records staged changes, and git diff shows differences between versions or working-tree states. Once cloned, the engineer can create branches, modify automation code, run tests, and submit changes for review through the team’s normal workflow.

Question 343.

Which Git command is most useful for examining the exact differences between a modified automation file and the version currently recorded in the repository?

1. git init
   2. git push
   3. git diff
   4. git tag

Correct Answer: 3

Explanation:

git diff displays line-by-line differences between versions of files or between the working tree and repository state. This allows engineers to review exactly what changed before staging or committing automation code. In infrastructure projects, this is particularly useful for spotting accidental configuration changes, removed validation logic, or unintended secret exposure. git push sends local commits to a remote repository, git tag marks specific commits, and git init initializes a new repository. Reviewing diffs before committing is a simple but effective quality-control practice.

Question 344.

Which Git object is most appropriate for marking a specific tested commit as a production release?

1. Working tree
   2. Stash only
   3. Remote branch only
   4. Tag

Correct Answer: 4

Explanation:

A Git tag marks a specific commit and is commonly used to identify releases, milestones, or known-good versions. In infrastructure automation, a production deployment can be associated with a tag so teams can identify exactly which automation revision was approved and deployed. Tags improve traceability and make rollback discussions clearer. Branches represent lines of development, while the working tree contains currently checked-out files. A stash temporarily saves uncommitted changes but is not intended for formal release identification.

Question 345.

Which CI/CD practice best helps ensure that the exact automation revision tested in one stage is the same revision deployed later?

1. Promote the same versioned artifact or commit through the pipeline
   2. Rewrite the code before each stage
   3. Disable source control after testing
   4. Recreate the deployment files manually

Correct Answer: 1

Explanation:

Promoting the same versioned artifact or exact commit through pipeline stages ensures consistency between testing and production deployment. If code is rebuilt or altered between stages without controlled versioning, the production result may differ from what was tested. Artifact promotion and immutable version identifiers improve reproducibility, auditing, and rollback. Manual recreation introduces unnecessary risk. Mature CI/CD workflows should clearly associate test results, approvals, and deployment records with a specific commit, build, or artifact version.

Question 346.

Which practice is most appropriate when a CI pipeline needs temporary credentials to test an infrastructure API?

1. Commit them to the repository
   2. Inject them securely from a secret store at runtime
   3. Place them in a public build log
   4. Hardcode them in the test script

Correct Answer: 2

Explanation:

CI pipelines should retrieve sensitive credentials from an approved secret-management system and inject them only when needed. This reduces the chance that passwords, tokens, or private keys will be exposed through repository history, code review, or logs. The credentials should be scoped to the test environment and granted only the required permissions. Public build logs and hardcoded secrets are particularly risky because CI output and source repositories may be widely accessible. Temporary or short-lived credentials are preferable where supported.

Question 347.

Which Cisco NX-OS feature is most appropriate for scheduling a local automation task to run at a specific time or interval based on supported event mechanisms?

1. HSRP
   2. vPC
   3. Embedded Event Manager
   4. LACP

Correct Answer: 3

Explanation:

Embedded Event Manager can use timer-based events in addition to triggers such as syslog messages or interface transitions. This allows local automation tasks to execute at defined intervals or times, depending on the supported EEM event detector. For example, EEM might periodically collect operational data or perform a health check. HSRP, vPC, and LACP provide network availability or link functions rather than general scheduling. Scheduled EEM actions should still be tested carefully to avoid excessive command execution or resource consumption.

Question 348.

A Nexus switch must run a Python program that requires standard Linux utilities and libraries. Which local environment is most appropriate?

1. HSRP process
   2. NX-API response body
   3. EIGRP process
   4. Guest Shell

Correct Answer: 4

Explanation:

Guest Shell provides a Linux-based environment on supported Nexus switches and is appropriate for Python scripts that need access to common Linux tools and libraries. It allows local programmability while remaining separate from the core NX-OS execution environment. NX-API is an external programmatic interface rather than a Linux shell. HSRP and EIGRP are networking protocols and do not provide scripting environments. Engineers should consider Guest Shell resource limits, package compatibility, and security requirements before deploying production automation locally.

Question 349.

Which approach best reduces the risk that a Guest Shell script consumes excessive CPU or memory on a production switch?

1. Test resource usage and enforce operational limits before deployment
   2. Run infinite loops intentionally
   3. Disable monitoring
   4. Start as many parallel processes as possible

Correct Answer: 1

Explanation:

On-box automation shares hardware resources with the network platform, so scripts should be tested carefully for CPU, memory, process, and storage usage. Rate limiting, bounded loops, timeouts, and monitoring help prevent a script from consuming excessive resources. Infinite loops and uncontrolled concurrency can affect device stability. Monitoring should remain enabled so resource problems can be detected quickly. Local automation should be treated with the same operational discipline as external automation because errors occur directly on production infrastructure.

Question 350.

Which HTTP method is normally used by RESTCONF to remove a resource represented by a YANG data node?

1. GET
   2. DELETE
   3. HEAD
   4. OPTIONS

Correct Answer: 2

Explanation:

RESTCONF uses HTTP DELETE to remove supported configuration resources represented by YANG-modeled data. The exact target URI and deletion semantics depend on the model and device implementation. GET retrieves data, while HEAD and OPTIONS serve different HTTP purposes. Destructive RESTCONF operations should be validated carefully before execution, especially when automated across many devices. Scripts should confirm the intended resource path, inspect response status codes, and preserve audit information.

Question 351.

Which RESTCONF method is commonly used to replace the complete representation of an existing resource when supported?

1. PUT
   2. GET
   3. OPTIONS
   4. HEAD

Correct Answer: 1

Explanation:

PUT is commonly used to create or replace the complete representation of a resource at a known URI, depending on RESTCONF semantics and platform support. PATCH is typically associated with partial modification, while GET retrieves data. Because replacing a complete resource may overwrite existing values, automation should construct the payload carefully and validate current state before sending the request. Developers should follow the specific device and YANG model documentation rather than assuming every RESTCONF implementation behaves identically.

Question 352.

Which RESTCONF method is generally most suitable for modifying only selected fields of an existing resource when supported?

1. HEAD
   2. PATCH
   3. GET
   4. OPTIONS

Correct Answer: 2

Explanation:

PATCH is generally associated with partial updates, allowing selected portions of a resource to be changed without replacing the complete representation. This can reduce the risk of unintentionally overwriting unrelated configuration. Exact semantics depend on implementation and supported patch formats. GET retrieves data and does not modify resources, while HEAD and OPTIONS serve other HTTP purposes. Automation should verify the platform documentation and test changes in a controlled environment before using partial updates in production.

Question 353.

Which NETCONF operation is used to release a datastore that was previously locked by a client?

1. <unlock>
   2. <commit>
   3. <get>
   4. <copy-config>

Correct Answer: 1

Explanation:

The NETCONF <unlock> operation releases a datastore previously locked by the client. Locks should be held only as long as necessary because they can prevent other authorized sessions from modifying configuration. A well-designed automation workflow acquires the lock, performs coordinated changes, validates or commits them as appropriate, and then releases the lock even when errors occur. <commit>, <get>, and <copy-config> perform different functions. Cleanup logic is important to prevent abandoned locks from disrupting other workflows.

Question 354.

Which NETCONF operation copies an entire configuration datastore to another supported datastore or destination?

1. <edit-config>
   2. <copy-config>
   3. <lock>
   4. <hello>

Correct Answer: 2

Explanation:

The <copy-config> operation copies a complete configuration from one source datastore to a target datastore or supported destination. This can be useful for backup, initialization, or configuration management workflows when the device supports the required datastores. <edit-config> changes selected configuration data, while <lock> controls concurrent editing and <hello> is used during session establishment. Automation should verify device capabilities before relying on particular datastore operations.

Question 355.

Which NETCONF operation is intended to validate a configuration without necessarily activating it, when the device advertises the relevant capability?

1. <validate>
   2. <close-session>
   3. <get>
   4. <unlock>

Correct Answer: 1

Explanation:

When the NETCONF validation capability is supported, <validate> checks whether configuration content is syntactically and semantically acceptable without necessarily making it active. This is especially useful with candidate configurations because automation can detect errors before commit. Validation capability should not be assumed; the client should inspect the server’s advertised capabilities during session establishment. <get> retrieves data, <unlock> releases a datastore lock, and <close-session> ends the NETCONF session.

Question 356.

Which Ansible concept allows a playbook to run against a limited subset of inventory hosts during a cautious production rollout?

1. Vault
   2. Handler
   3. Template
   4. Host limiting or staged targeting

Correct Answer: 4

Explanation:

Ansible can target only selected hosts or groups, allowing teams to perform staged or canary-style rollouts rather than changing every device simultaneously. This reduces blast radius because engineers can validate behavior on a small subset before expanding deployment. Inventory organization, host patterns, and execution limits all help control scope. Vault protects secrets, handlers perform follow-up actions, and templates generate content. Controlled targeting is an important safety mechanism for production network automation.

Question 357.

Which Ansible execution strategy best reduces risk when updating a large number of production devices?

1. Change all devices simultaneously without validation
   2. Use staged batches and verify results between groups
   3. Disable failure handling
   4. Ignore unreachable devices

Correct Answer: 2

Explanation:

Staged batch deployment reduces operational risk by limiting the number of devices affected at one time. A small initial group can be changed and validated before the workflow continues to additional devices. If a problem occurs, automation can stop before the issue spreads across the entire environment. Ansible provides mechanisms such as serial execution to control batch size. Ignoring failures or changing every device at once increases the blast radius. Progressive rollout is especially useful for core data center infrastructure.

Question 358.

Which Terraform command formats configuration files into the standard canonical style?

1. terraform destroy
   2. terraform fmt
   3. terraform apply
   4. terraform import

Correct Answer: 2

Explanation:

terraform fmt rewrites Terraform configuration files into the standard formatting style. This improves readability and consistency across teams and is often run automatically in CI. It does not validate provider connectivity or apply infrastructure changes. terraform apply changes resources, terraform destroy removes them, and terraform import associates existing infrastructure with Terraform state. Formatting is a simple but useful quality control because consistent code is easier to review and maintain.

Question 359.

Which Terraform command associates an existing infrastructure resource with a resource address in Terraform state without recreating the resource?

1. terraform import
   2. terraform destroy
   3. terraform fmt
   4. terraform output

Correct Answer: 1

Explanation:

terraform import brings an existing resource under Terraform state management by associating it with a Terraform resource address. The resource is not recreated simply by the import operation. Afterward, the configuration should accurately describe the imported resource so future plans behave as expected. Importing is useful when organizations adopt Terraform for infrastructure that already exists. Careful plan review is important after import because differences between configuration and actual state can produce unexpected proposed changes.

Question 360.

A production automation deployment succeeds technically, but monitoring shows unexpected application connectivity problems afterward. What should the automation process do next?

1. Continue deploying to more devices without investigation
   2. Delete all deployment logs
   3. Stop further rollout and initiate validation or rollback according to the deployment plan
   4. Disable monitoring so the pipeline can complete

Correct Answer: 3

Explanation:

A successful API or configuration response does not guarantee that the resulting service behavior is correct. If post-deployment monitoring reveals connectivity problems, further rollout should stop and the team should validate the impact. Depending on the predefined deployment plan, the safest action may be rollback, remediation, or escalation. Deployment logs and telemetry should be retained because they help determine what changed and why. Mature automation includes post-change verification, failure thresholds, and rollback procedures rather than treating configuration success as the only definition of success.