Common Copper and Fibre Physical Issues Flashcards
What are the 2 Main CAT Cabling Standards
T-568A and T568B
Why are there twists in the UTP Cable
To Minimize Electrical Interference
Why are some cable pairs twisted differently
To keep the internal pairs out of phase with each other
In a T-568A cable which pins are used for data transmission
1, 2, 3 and 6
In a T-568A cable, what is the recommended length
100m
What are the 2 typical Fibre cables used
MM and SM
What 3 components make up a fibre cable
Buffer, Cladding, Core
What are the 4 common connector types for Fibre
ST, SC, FC and LC
What command do you use to see Interface Status and Protocol
sh ip interface brief (Status - L1, Protocol - L2 of OSI model)
What command do you use to see Interface Duplex, Speed and Type
sh interface status
If an interface is set to 100 Full and the other connecting interface is set to Auto - what will the effective speed be?
If one side is set to Auto then the interface defaults to 100Mbps Half Duplex
What interface command will check for collisions
sh interface
What Errors are Summarized in the Interface Input Error Counter
Runts, Giants, CRC, Frame
What is a late collision
collision occurred after first 512 bytes of Frame
Ethernet cables follow strict specifications that dictate the correct order of the individual wires in the tips of the cable. Failure to follow these specifications prevents the proper electromagnetic field from forming and shielding the wires from interference. True or false?
True
