This week was used to review for our test. We cleared the room out and were given 4 cards with a networking subject on it. We then went around the room and compared cards and how they relate to each other like, “physical layer – crossover cable.” This was a helpful exercise to review, but also to bring up questions.
We also discussed this week encapsulation. Simple explanation, the encapsulation means the lower layer of TCP/IP protocol suite would wrap (encapsulate) the upper layer’s data, header and add its own header/footer with protocol information, then send to lower layer again till the encapsulated data is sent out to other networking device, finally the unwrapping (decapsulation) process on the received data would be enforced at the destination.