CiscoProfessional level300-435Page 2 of 4

300-435 exam dumps: questions 101 to 200 of 321

Page 2 of the free 300-435 question bank for the Automating Cisco Enterprise Solutions exam. Questions 101 to 200 are listed below, the first 5 in full with answers and explanations. Back to page 1 for the exam overview and FAQ.

Question bank last updated February 2025

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Questions 101 to 105 of 321

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300-435 Question 101

Select 3

You are tasked with automating the configuration of network devices in your organization's infrastructure. You decide to use RESTCONF to interact with the devices. Which of the following statements are true about using RESTCONF for this purpose?

A
RESTCONF uses HTTP methods such as GET, POST, PUT, and DELETE to interact with network devices.
B
RESTCONF relies on YAML as its primary data encoding format for network communication.
C
RESTCONF is built on top of NETCONF and uses YANG models to structure the configuration data.
D
RESTCONF requires enabling an HTTPS server on the network device to ensure secure communication.
E
RESTCONF is primarily used for streaming telemetry data from network devices.

Show answer and explanation

Correct answers: A, C, D

Explanation

RESTCONF is a protocol designed for managing network configurations and operational data using HTTP methods. It relies on YANG models for data structuring and ensures secure communication through HTTPS. While RESTCONF is not used for telemetry streaming, it is an efficient tool for automating network device interactions using JSON or XML data encoding.

A. Correct.
Correct. RESTCONF leverages HTTP methods (GET, POST, PUT, DELETE) to retrieve, modify, and delete data on network devices.
B. Incorrect.
Incorrect. RESTCONF primarily uses JSON or XML as its data encoding format, not YAML.
C. Correct.
Correct. RESTCONF builds upon NETCONF and uses YANG models to define the structure and semantics of the configuration and operational data.
D. Correct.
Correct. To enable secure communication, RESTCONF requires HTTPS to be configured on the network device.
E. Incorrect.
Incorrect. RESTCONF is typically used for configuration management and operational data retrieval, not for streaming telemetry. For telemetry, gNMI or NETCONF is commonly used.

300-435 Question 102

Single answer

You are tasked with automating the configuration of network devices in your enterprise network using RESTCONF. During the process, you want to retrieve the current running configuration of a specific interface on a Cisco device. Which RESTCONF HTTP method and URI would you use?

A
GET /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet1
B
POST /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet1
C
PUT /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet1
D
DELETE /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet1

Show answer and explanation

Correct answer: A

Explanation

To retrieve the current running configuration of a specific interface using RESTCONF, you use the GET HTTP method along with the appropriate URI. The URI specifies the data model (ietf-interfaces in this case) and the target resource (the specific interface). This ensures that you can query and read the configuration without making any modifications.

A. Correct.
The GET method is used to retrieve data from a resource. In this case, it retrieves the running configuration of the specified interface.
B. Incorrect.
The POST method is used to create a new resource. It cannot be used to retrieve data, so this option is incorrect.
C. Incorrect.
The PUT method is used to update or replace an existing resource. It is not suitable for retrieving data, so this option is incorrect.
D. Incorrect.
The DELETE method is used to remove a resource. It has no role in retrieving data, so this option is incorrect.

300-435 Question 103

Select 3

You are tasked with automating the configuration of a Cisco device using RESTCONF. During the process, you need to ensure secure communication between your automation script and the device. Which steps should you take to establish a secure RESTCONF connection?

A
Generate an SSL/TLS certificate and configure it on the Cisco device
B
Ensure the device has RESTCONF enabled using the 'restconf' command
C
Use HTTP instead of HTTPS to simplify the connection setup
D
Include authentication credentials (username and password) in the RESTCONF requests
E
Manually configure the RESTCONF port to 80 for compatibility

Show answer and explanation

Correct answers: A, B, D

Explanation

To establish a secure RESTCONF connection, you must ensure encryption using SSL/TLS by generating and configuring the appropriate certificates on the Cisco device. Additionally, RESTCONF must be explicitly enabled, and authentication credentials must be included in the requests. The use of HTTPS instead of HTTP ensures the confidentiality and integrity of the data being transferred. Avoid using insecure configurations such as port 80.

A. Correct.
Generating an SSL/TLS certificate and configuring it on the device ensures encrypted communication, which is essential for secure RESTCONF operations.
B. Correct.
RESTCONF must be enabled on the Cisco device for any RESTCONF-based communication to occur.
C. Incorrect.
HTTP does not provide encryption, making it insecure for RESTCONF communication. HTTPS must be used instead.
D. Correct.
Providing authentication credentials in the RESTCONF requests is necessary for secure and authenticated communication with the device.
E. Incorrect.
Manually setting the RESTCONF port to 80 would compromise security since port 80 is associated with unencrypted HTTP communication.

300-435 Question 104

Single answer

A network engineer is tasked with implementing a telemetry solution to monitor the performance of a Cisco enterprise network. The engineer needs a model where the telemetry data is sent only when a change occurs, rather than at regular intervals. Which telemetry model should the engineer select?

A
Subscription-based telemetry model
B
Publication-based telemetry model
C
Polling-based telemetry model
D
SNMP-based telemetry model

Show answer and explanation

Correct answer: A

Explanation

The subscription-based telemetry model is ideal for scenarios where the system needs to send telemetry data only when specific changes occur, rather than at fixed intervals. This makes it efficient for reducing unnecessary data transmission and meeting the requirements of the given scenario.

A. Correct.
Correct. In the subscription-based telemetry model, data is pushed from the device to the receiver based on a predefined subscription, and it can be configured to send updates only when changes occur.
B. Incorrect.
Incorrect. The publication-based telemetry model is not a standard telemetry model. It is not used to describe push-based telemetry systems.
C. Incorrect.
Incorrect. Polling-based telemetry involves actively querying devices for data at regular intervals, which does not align with the requirement of sending data only when a change occurs.
D. Incorrect.
Incorrect. SNMP is a protocol for network management and monitoring, but it typically involves polling or traps rather than a subscription-based model for telemetry.

300-435 Question 105

Single answer

You are tasked with setting up network telemetry in an enterprise environment. The goal is to minimize bandwidth usage while ensuring telemetry data is available in near real-time for analysis. Which telemetry model is most suitable for this scenario?

A
Pull-based telemetry model
B
Push-based telemetry model
C
SNMP polling model
D
Syslog-based telemetry model

Show answer and explanation

Correct answer: B

Explanation

The push-based telemetry model is ideal for scenarios where near real-time data is required with minimal bandwidth usage. It enables devices to send updates only when relevant changes occur, rather than requiring periodic polling, making it efficient and scalable for modern enterprise environments.

A. Incorrect.
A pull-based telemetry model requires the collector to request data periodically from devices. This can cause delays and unnecessary bandwidth usage, making it less suitable for near real-time data collection.
B. Correct.
A push-based telemetry model allows devices to send data proactively to collectors when configured, minimizing latency and reducing unnecessary polling traffic, which aligns well with the scenario's requirements.
C. Incorrect.
SNMP polling is similar to the pull-based model, where the network management system queries data from devices periodically. It is not efficient for near real-time telemetry and can consume more bandwidth.
D. Incorrect.
Syslog is used for logging events and messages from devices but is not designed for structured telemetry data or near real-time updates. It is more suited for event logging rather than telemetry collection.

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300-435 practice questions 101 to 200 of 321

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