Volume 1 - Chapter 2: Fundamentals of Ethernet LANs Flashcards
All ethernet standards fall under the scope of what IEEE designation?
802.3
What is the speed of the original Ethernet standard?
10 Mbps
What are the informal and formal IEEE standard names for the original Ethernet standard?
Informal: 10BASE-T
Formal: 802.3
What is the speed of the fast Ethernet standard?
100 Mbps
What are the informal and formal IEEE standard names for the fast Ethernet standard?
Informal: 802.3u
Formal: 100BASE-T
What is the speed of the gigabit Ethernet standard?
1 Gbps (1000 Mbps)
What are the informal and formal IEEE standard names for the gigabit Ethernet standard?
Informal: 1000BASE-LX or 1000BASE-T
Formal: 802.3z or 802.3ab
What is the speed of the ten-gigabit Ethernet standard?
10 Gbps
What are the informal and formal IEEE standard names for the ten-gigabit Ethernet standard?
Informal: 10GBASE-T
Formal: 802.3an
The process of a node sending data while the other node, the receiver, using the same rules, interprets those changes is referred to as?
An encoding scheme
The term “EMI” stands for?
Electromagnetic interference
Define the term “crosstalk” in regards to electromagnetic interference (EMI).
EMI between wire pairs in the same cable
Which Ethernet standards require 2 pairs of wires in the same cable?
10BASE-T and 100BASE-T
Which Ethernet standards require 4 pairs of wires in the same cable?
1000BASE-T or greater
Describe the purpose of a Gigabit Ethernet Interface Converter (GBIC).
The original form factor for a removable transceiver for Gigabit interfaces; larger than SFPs
What technology is used as the replacement for GBICs?
The Small-Form-Factor Pluggable (SFP)
Describe the difference between the SFP and SFP+
The sizes are the same, but SFP+ modules support speeds of 10 Gbps or higher