Which protocol secures signaling for MRA?

Which protocol secures signaling for MRA?

• A. SSH
• B. HTTP
• C. UDP
• D. TLS

Answer: (D)

Securing signaling requires encryption and integrity for the control messages that set up and manage calls. Transport Layer Security (TLS) provides exactly that for signaling protocols like SIP when it runs over TLS (SIP over TLS, often referred to as SIPS). In Mobile and Remote Access (MRA), signaling between Jabber clients and the server infrastructure travels over this protected channel, ensuring that call setup information, authentication, and routing data aren’t exposed or tampered with. SSH is used for secure remote device management, not for signaling in MRA. HTTP is not used securely for signaling in this context (and would be HTTPS if you were securing HTTP, which still revolves around TLS, but the direct signaling protocol in MRA is SIP over TLS). UDP is a transport protocol that does not provide encryption or integrity on its own. TLS is the protocol that explicitly secures the signaling path in MRA.

Securing signaling requires encryption and integrity for the control messages that set up and manage calls. Transport Layer Security (TLS) provides exactly that for signaling protocols like SIP when it runs over TLS (SIP over TLS, often referred to as SIPS). In Mobile and Remote Access (MRA), signaling between Jabber clients and the server infrastructure travels over this protected channel, ensuring that call setup information, authentication, and routing data aren’t exposed or tampered with.

SSH is used for secure remote device management, not for signaling in MRA. HTTP is not used securely for signaling in this context (and would be HTTPS if you were securing HTTP, which still revolves around TLS, but the direct signaling protocol in MRA is SIP over TLS). UDP is a transport protocol that does not provide encryption or integrity on its own. TLS is the protocol that explicitly secures the signaling path in MRA.