312-50V11 · Question #319
Smart cards use which protocol to transfer the certificate in a secure manner?
The correct answer is A. Extensible Authentication Protocol (EAP). Smart cards use EAP - specifically EAP-TLS - to securely transfer the certificate during the authentication handshake.
Question
Smart cards use which protocol to transfer the certificate in a secure manner?
Options
- AExtensible Authentication Protocol (EAP)
- BPoint to Point Protocol (PPP)
- CPoint to Point Tunneling Protocol (PPTP)
- DLayer 2 Tunneling Protocol (L2TP)
How the community answered
(30 responses)- A93% (28)
- B3% (1)
- D3% (1)
Why each option
Smart cards use EAP - specifically EAP-TLS - to securely transfer the certificate during the authentication handshake.
EAP (Extensible Authentication Protocol) is a flexible authentication framework that supports multiple methods, and EAP-TLS is the variant used with smart cards to perform mutual certificate-based authentication. The smart card holds the private key and certificate, and EAP-TLS orchestrates the TLS handshake that presents the certificate to the authenticating server securely. This is the standard protocol used in 802.1X environments for smart card logon.
PPP is a data link layer encapsulation protocol for serial connections and does not provide a mechanism for certificate-based authentication on its own.
PPTP is a VPN tunneling protocol that encapsulates PPP frames and does not handle smart card certificate exchange.
L2TP is a tunneling protocol that creates VPN connections but relies on IPsec or other protocols for security and does not natively handle smart card certificate transfer.
Concept tested: EAP-TLS smart card certificate authentication
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/extensible-authentication-protocol/network-access
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