Free 300-435 sample questions

Correct answers: It does not require any modules of software except SSH to be loaded on the network device.; It is a device-independent method for automation and can be used with any type of device or operating system.

Ansible is agentless. It runs on a control node and pushes changes to IOS XE over SSH (`network_cli`) or over the device's APIs, so nothing except SSH/API access is needed on the device. The same playbook and module model works across many device types and operating systems through platform collections such as `cisco.ios`, so Ansible is a device-independent automation method. Playbooks are not installed on, shipped with, or written from the IOS XE CLI.

Ansible is agentless. It runs on a control node and pushes changes to IOS XE over SSH (`network_cli`) or over the device's APIs, so nothing except SSH/API access is needed on the device. The same playbook and module model works across many device types and operating systems through platform collections such as `cisco.ios`, so Ansible is a device-independent automation method. Playbooks are not installed on, shipped with, or written from the IOS XE CLI.

Correct answers: automated through expressed intent to a software controller; build upon a robust software stack

In a software-defined network, a controller built on a robust software stack with northbound APIs abstracts the network. Operators express their intent to the controller, which automatically translates it into device configuration. Tightly coupled control and data planes, device-by-device configuration, and dependence on specialized hardware are characteristics of traditional networks.

In a software-defined network, a controller built on a robust software stack with northbound APIs abstracts the network. Operators express their intent to the controller, which automatically translates it into device configuration. Tightly coupled control and data planes, device-by-device configuration, and dependence on specialized hardware are characteristics of traditional networks.

Correct answers: They block until a response is returned from the servers.; They can add perceived latency to your application if data is not received.

A synchronous API call blocks the calling code until the server returns a response. If the response is slow or never arrives, the application waits, which adds perceived latency. Synchronous calls can be made from any language and are not inherently less portable. Not blocking while the request is processed describes asynchronous calls.

A synchronous API call blocks the calling code until the server returns a response. If the response is slow or never arrives, the application waits, which adds perceived latency. Synchronous calls can be made from any language and are not inherently less portable. Not blocking while the request is processed describes asynchronous calls.

Correct answer: Action Batches

Action Batches allow you to send multiple configuration requests in a single API call. This reduces the number of HTTP requests, helping to stay within rate limits, and supports 'atomic' transactions where either all changes are applied or none are, ensuring configuration consistency.

Correct answer: GET /restconf/data/ietf-interfaces:interfaces-state/interface=GigabitEthernet1

In RESTCONF, operational data (status) is typically accessed via the `interfaces-state` container (in RFC 7223/8343 models) or similar state containers. The `/restconf/data` root is correct, and GET is the correct verb for retrieval. Accessing configuration data would use the `interfaces` container.

Correct answer: default_operation='replace'

`edit_config(..., default_operation='replace')` adds ` replace ` to the RPC. The NETCONF default is `merge`; with `replace`, RFC 6241 §7.2 states that the configuration data in the ` ` parameter completely replaces the configuration in the target datastore, so anything not in the payload is removed. (To replace only one container or list entry, keep the default merge and put the `operation="replace"` attribute on that element in the XML.) `error_option='rollback-on-error'` only controls error handling, `target='startup'` is not an edit-config target on IOS XE (edits go to running, or candidate when enabled), and ncclient's `format` accepts 'xml', 'text' or 'url', not 'json'.

Correct answer: To authenticate the Cisco DNA Center request against the external receiver

The Authorization header (often Basic Auth or a Bearer Token) configured in the DNA Center webhook destination is sent *from* DNA Center *to* the external system, allowing the external system to verify that the incoming HTTP request is legitimate and authorized.

Correct answer: git rebase

`git rebase` re-applies commits from the current branch on top of another base tip (e.g., origin/main). This creates a linear history without the extra 'merge commit' that `git merge` produces, which is often preferred for cleaner history.