300-415 Question #14: Real Exam Question with Answer & Explanation

The correct answer is A: Serial Number. In Cisco SD-WAN, the Serial Number embedded in a device's certificate is the value verified to confirm device identity during authentication.

Security and Quality of Service

Question

Which value is verified in the certificates to confirm the identity of the device?

Options

ASerial Number
BOTP
CSystem-IP
DChassis-ID

Explanation

In Cisco SD-WAN, the Serial Number embedded in a device's certificate is the value verified to confirm device identity during authentication.

Common mistakes.

B. A One-Time Password (OTP) is a transient authentication token used during initial provisioning in some workflows, but it is not a value stored inside a certificate used for identity confirmation.
C. The System-IP is a logical identifier assigned administratively to a WAN Edge in vManage and is not embedded in certificates for hardware identity verification.
D. The Chassis-ID may be referenced during provisioning but is not the standardized field within X.509 certificates used to verify device identity in the SD-WAN authentication process.

Concept tested. Cisco SD-WAN certificate-based device identity verification

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/security/ios-xe-17/security-book-xe/security-overview.html

Topics

#Certificates#Device Identity#Authentication#Serial Number

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