Which OSI layer provides user-facing services, including HTTP, DNS, and SMTP?

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Multiple Choice

Which OSI layer provides user-facing services, including HTTP, DNS, and SMTP?

Explanation:
End-user-facing services come from the top layer of the OSI model. This layer defines the protocols that applications use to communicate over a network. HTTP, DNS, and SMTP are examples of those application-layer protocols: HTTP delivers web content to your browser, DNS translates domain names into IP addresses, and SMTP handles email delivery. These protocols specify the data formats, commands, and responses that applications exchange, while the layers below them handle transport, session control, and data presentation. So the layer that provides user-facing services is the application layer.

End-user-facing services come from the top layer of the OSI model. This layer defines the protocols that applications use to communicate over a network. HTTP, DNS, and SMTP are examples of those application-layer protocols: HTTP delivers web content to your browser, DNS translates domain names into IP addresses, and SMTP handles email delivery. These protocols specify the data formats, commands, and responses that applications exchange, while the layers below them handle transport, session control, and data presentation. So the layer that provides user-facing services is the application layer.

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