Free 300-435 sample questions

Correct answers: Parameters can be passed to the calls.; They call a single function or service.

An RPC (remote procedure call) API exposes remote operations as procedures. Each call invokes one specific function or service on the server, such as a NETCONF ` ` RPC or a JSON-RPC method, and the client passes parameters (arguments) with the call. RPC is not limited to network devices and does not require UDP: NETCONF RPCs run over SSH/TCP, and gRPC runs over HTTP/2. SSL/TLS is also not part of the definition of RPC.

An RPC (remote procedure call) API exposes remote operations as procedures. Each call invokes one specific function or service on the server, such as a NETCONF ` ` RPC or a JSON-RPC method, and the client passes parameters (arguments) with the call. RPC is not limited to network devices and does not require UDP: NETCONF RPCs run over SSH/TCP, and gRPC runs over HTTP/2. SSL/TLS is also not part of the definition of RPC.

Correct answers: Quickly create any Python environment for testing and debugging purposes.; Quickly create an isolated Python environment with module dependencies.

A Python virtual environment (`python3 -m venv `) is a lightweight, isolated Python environment with its own site-packages directory. Each project can quickly get its own set of installed modules at the versions it needs, for example from `pip install -r requirements.txt`, for development, testing and debugging without affecting the system Python or other projects. A venv does not port code between languages, emulate other operating systems, or simplify a CI/CD pipeline.

A Python virtual environment (`python3 -m venv `) is a lightweight, isolated Python environment with its own site-packages directory. Each project can quickly get its own set of installed modules at the versions it needs, for example from `pip install -r requirements.txt`, for development, testing and debugging without affecting the system Python or other projects. A venv does not port code between languages, emulate other operating systems, or simplify a CI/CD pipeline.

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

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

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

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'.