Week 3

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Week 3. As you may have discovered by reading your textbook, there are two sub-layers that operate at the data link layer. The media access control (MAC) sub-layer controls the hardware, so let’s focus on that aspect. The two approaches to media access control are controlled and contention access. What are some differences in these approaches? When would one access control be a better option than the other?

Network sniffing and analysis has become a critical and necessary element of work for systems administrators, network admin, network engineers, security analysts, and many other niches within the realm of information technology. Wireshark is a free tool that allows you to quickly investigate connectivity and application problems. Download, install, and capture some local traffic from your home network. What data link communications do you see taking place? Does anyone see a term called ARP? What might this mean? Share your findings with the class.Please take a look in the Webliography for the link titled Wireshark.