200-201 · Question #392
200-201 Question #392: Real Exam Question with Answer & Explanation
The correct answer is C: A protocol of the sending host adds additional data to the packet header.. Data encapsulation is a process in networking where the protocol stack of the sending host adds headers (and sometimes trailers) to the data. Each layer of the OSI or TCP/IP model adds its own header to the data as it passes down the layers, preparing it for transmission over the
Question
What is data encapsulation?
Options
- AData is encrypted backwards, which makes it unusable.
- BMultiple hosts can be supported with only a few public IP addresses.
- CA protocol of the sending host adds additional data to the packet header.
- DBrowsing history is erased automatically with every session.
Explanation
Data encapsulation is a process in networking where the protocol stack of the sending host adds headers (and sometimes trailers) to the data. Each layer of the OSI or TCP/IP model adds its own header to the data as it passes down the layers, preparing it for transmission over the network. For example, in the TCP/IP model, data starts at the application layer and is encapsulated at each subsequent layer (Transport, Internet, and Network Access) before being transmitted. This encapsulation ensures that the data is correctly formatted and routed to its destination, where the headers are stripped off in reverse order by the receiving host.
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