This chapter contains an excessive amount of information about Ethernet standards, which I believe is not particularly necessary for bug bounty programs. If you're interested in learning more, I recommend reading the book.

100-Megabit Ethernet

100BASE-T

• Speed 100 Mbps
• Signal type Baseband
• Distance 100 meters between the hub and the node
• Node limit No more than 1024 nodes per hub/switch
• Topology Star-bus topology: physical star, logical bus
• Cable type Cat 5 or better UTP or STP cabling with RJ-45/8P8C connectors

<aside> 💡

Multispeed, auto-sensing 100BASE-T NICs when connects to a network, it negotiates automatically with the hub or switch to determine the other device’s highest speed If they both did 100BASE-T, then you got 100BASE-T. If the hub or switch only did 10BASE-T, then the NIC did 10BASE-T.

</aside>

100BASE-FX

• Speed 100 Mbps
• Signal type Baseband
• Two kilometers between the hub/switch and the node
• Node limit No more than 1024 nodes per hub/switch
• Topology Star-bus topology: physical star, logical bus
• Cable type Multimode fiber-optic cabling (generally OM1) with ST or SC connectors

100BASE-SX

100BASE-SX was a short-distance, LED-based alternative to 100BASE-FX. It ran on OM1 or OM2 fiber at 850 nm and used ST, SC, or LC connectors.

Full-Duplex Ethernet