Networking Basics Flashcards
What is PoE stands for, and its different varieties and Watts supplied
Power over Ethernet
Electrical power from a switch port over an ordinary data cable to a power device.
- 802.3af (15.4W)
- 802.3at (PoE+) (25W)
- 802.3bt (51W for Type 3 device or 73W for Type 4 device)
Name the different categories of twisted pair cabling
Cat 5
Cat 5e
Cat 6
Cat 6a
Cat 7
Cat 8
Cat 5: standard, bandwidth and distance
Standard: 100BASE-TX
Bandwidth: 100 Mbps
Distance: 100 meters
Cat 5e: standard, bandwidth and distance
Standard: 1000BASE-T
Bandwidth: 1000 Mbps
Distance: 100 meters
Cat 6: standard, bandwidth and distance
Standard: 1000BASE-T
Bandwidth: 1000 Mbps
Distance: 100 meters
Standard: 10GBASE-T
Bandwidth: 10 Gbps
Distance: 55 meters
Cat 6a: standard, bandwidth and distance
Imporant!
Standard: 10GBASE-T
Bandwidth: 10 Gbps
Distance: 100 meters
Cat 7: standard, bandwidth and distance
Important!
Standard: 10GBASE-T
Bandwidth: 10 Gbps
Distance: 100 meters
Cat 8: standard, bandwidth and distance
Standard: 40GBASE-T
Bandwidth: 40 Gbps
Distance: 30 meters
Cat 6a and Cat 7 are both considered:
10 G based T (10 Gbps) and max distance is 100 meters
Crossover cable required:
Switch to switch
Needed: (to same thing)
terminal to terminal
communication equipment to communication equipment
Not needed: (to different thing)
comm equip to terminal
terminal to comm equip
What to apply plenum cable for
For anything you cannot see. Ceilings, walls, raised floors and air ducts
Multimode fiber and single mode fiber
Which one has a larger core size?
Which one cover longer ditances?
Multimode fiber has a larger core size.
Single mode fiber cover longer distances.
Remember “Fox and Hound” or “Toner Probe” for
Finding the exact cable distributed in the network
