(ISC)2 Certified in Cybersecurity Practice Exam

What is the process of de-encapsulation?

1. Encrypting data packets

2. Revealing bundled data

3. Dividing data into packets

4. Compressing data for transmission

The correct answer is: Revealing bundled data

The process of de-encapsulation involves revealing or extracting data that has been encapsulated within a protocol suite. In networking, data is often wrapped in layers of protocol information as it moves down the stack from the application layer to the physical layer, a process known as encapsulation. Each layer adds its own header (or footer) to the data, and when this data reaches its destination, it must be processed in the opposite order. De-encapsulation is the procedure by which each layer’s header is removed, allowing the original data, or payload, to be accessed and utilized by the appropriate layer of the destination system. The understanding of encapsulation and de-encapsulation is crucial for anyone involved in networking and cybersecurity, as it explains how data is structured for transmission and how it can be interpreted once received.