Page 741 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide
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6. The receiving computer captures the bits from the physical
connection and re-creates the message in the Physical layer.
7. The Physical layer converts the message from bits into a Data Link
frame and sends the message up to the Data Link layer.
8. The Data Link layer strips its information and sends the message
up to the Network layer.
9. This process of deencapsulation is performed until the message
reaches the Application layer.
10. When the message reaches the Application layer, the data in the
message is sent to the intended software recipient.
FIGURE 11.2 Representation of OSI model encapsulation
The information removed by each layer contains instructions,
checksums, and so on that can be understood only by the peer layer
that originally added or created the information (see Figure 11.3). This
information is what creates the logical channel that enables peer layers
on different computers to communicate.
