Device A is contacting https://arubapedia.arubanetworks.com. The web server sends a certificate chain. What does the browser do as part of validating the web server certificate?

Question

Options

• AIt makes sure that the key in the certificate matches the key that DeviceA uses for HTTPS.
• BIt makes sure the certificate has a DNS SAN that matches arubapedia.arubanetworks.com
• CIt makes sure that the public key in the certificate matches DeviceA's private HTTPS key.
• DIt makes sure that the public key in the certificate matches a private key stored on DeviceA.

• B
  96% (27)
• D
  4% (1)

Explanation

When a device like Device A contacts a secure website and receives a certificate chain from the server, the browser's primary task is to validate the web server's certificate to ensure it is trustworthy. Part of this validation includes checking that the certificate contains a DNS Subject Alternative Name (SAN) that matches the domain name of the website being accessed--in this case, arubapedia.arubanetworks.com. This ensures that the certificate was indeed issued to the entity operating the domain and helps prevent man-in-the-middle attacks where an invalid certificate could be presented by an attacker. The DNS SAN check is critical because it directly ties the digital certificate to the domain it secures, confirming the authenticity of the website to the

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