Defend the link between availability and dependability in the context of a computer network. Because of these issues, it is currently regarded to be obsolete. A deep dive into the subject is required.

Conversely, the OSI model defines a greater number of layers than are actually used in practice by the vast majority of computer systems. This is so because of the nature of computer architecture. Instead of using the same number of layers as before, why not reduce it? Is there anything that might go wrong if we choose to use less layers?

How, in the context of your investigations, does the concept of Mutual Exclusion (ME) emerge as a prerequisite for the efficient operation of an OS?

Wireless sensor networks (WSNs) are a specific sort of communication network. WSNs communicate with a central station through sensor nodes. A sensor node's memory and processing power are limited. The algorithm may be split down into simpler challenges. Divide & conquer or dynamic programming are your preferred methods for completing these sub-problems at various sensor nodes? Be succinct in your writing.