350-401 Question #1049: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. Which action must be performed to allow RESTCONF access to the device?

Options

• AEnable the NETCONF service.
• BEnable the SSH service.
• CEnable the IOX service.
• DEnable the HTTPS service.

Explanation

RESTCONF Access Explanation

RESTCONF operates over HTTPS (HTTP Secure), using standard REST API calls transported via TLS-encrypted HTTP. Since RESTCONF relies on the HTTPS protocol to send and receive data in JSON or XML format, the HTTPS service must be explicitly enabled on the Cisco device for RESTCONF to function.

• Option A is wrong because NETCONF uses SSH as its transport (port 830), not HTTPS - it is a separate protocol entirely, though both are model-driven programmability options.
• Option B is wrong because SSH is the transport for NETCONF and CLI access, not RESTCONF; enabling SSH alone does nothing for RESTCONF communication.
• Option C is wrong because IOx is Cisco's application hosting environment for running containerized apps/scripts at the network edge - it is unrelated to enabling RESTCONF API access.

💡 Memory Tip: Think of RESTCONF as a web-based API - just like websites use HTTPS, RESTCONF uses HTTPS. If it "looks like a browser request," it needs HTTPS enabled. Pair this with: NETCONF = SSH, RESTCONF = HTTPS.

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