Medium Access Control: Static Allocation

Introduction

Point-to-point data link layer types need to select one of the framing techniques described previously and optionally add retransmission algorithms, such as those explained for the transport layer to provide a reliable service.

LAN Organizations

A LAN is composed of several hosts that are attached to the same shared physical medium. And LAN can be organized in a few different ways. We’ll focus on four main ones:

1. A bus-shaped network where all hosts are attached to the same physical cable.

2. A ring-shaped network where all hosts are attached to an upstream and a downstream node so that the entire network forms a ring.

3. A star-shaped network where all hosts are attached to the same device.

4. A wireless network where all hosts can send and receive frames using radio signals.

Collisions

The ...