Which protocol maintains confidentiality of the data in transit from the user's system to the server on port 443?

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Multiple Choice

Which protocol maintains confidentiality of the data in transit from the user's system to the server on port 443?

Explanation:
Traffic to port 443 is typically HTTPS, which relies on TLS to keep data confidential as it travels between the user and the server. TLS creates an encrypted channel by performing a handshake to authenticate the server (and sometimes the client) and to establish a shared session key. Once the key is established, the actual data is encrypted with a symmetric cipher, so even if someone intercepts the traffic, they can’t read its contents. This encryption in transit is exactly what protects confidentiality. Other options don’t provide a protocol for encrypting data in transit. A policy is a rule or guideline, not a communication protocol. An embedded system refers to hardware that may run software, not a transport-layer security mechanism. A web service is an architectural concept for exposing functionality over the network, not the protocol used to secure the data itself.

Traffic to port 443 is typically HTTPS, which relies on TLS to keep data confidential as it travels between the user and the server. TLS creates an encrypted channel by performing a handshake to authenticate the server (and sometimes the client) and to establish a shared session key. Once the key is established, the actual data is encrypted with a symmetric cipher, so even if someone intercepts the traffic, they can’t read its contents. This encryption in transit is exactly what protects confidentiality.

Other options don’t provide a protocol for encrypting data in transit. A policy is a rule or guideline, not a communication protocol. An embedded system refers to hardware that may run software, not a transport-layer security mechanism. A web service is an architectural concept for exposing functionality over the network, not the protocol used to secure the data itself.

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