Topologies and Cabling Flashcards
Most popular Topology used today
Star-Bus / or Hybrid Topology
Where all hosts are connected to all host at the same time and is great for Wireless networks.
Mesh Topology (or Mess)
Mesh Topologies have __________ which when a cable breaks between 2 computers, it doesn’t affect the connection between the other machines.
Fault Tolerance
Partially Mesh networks use________ for better connectivity
Extenders
How is the Electronic Circuit Flow of Frames explained?
Logical Topology
What determines which coax cable it is, thickness, and conductor
RG or ( Radio Grade ) rating
Resistance is measured in:
OHMS
RG-6 is the standard Coax Cable used and works up to:
75 OHMS
Standard connector used on RG-6
F-Type
What type of connector Pushes on and twist?
BNC
What type of cable has 2 inner conductors in a twisted pair instead of 1
Twinaxial / Twinax cable
Twinax use what type of connectors
BNC and SFP+
Coaxial Advantages
- highly resistance to Electromagnetic Interference (EMI)
- Highly resistance to physical damage
Coaxial Disadvantages
- Inflexible or difficult to install
- Expensive
Benefits of Twisted Cables :
- reduce Electromagnetic Interference ( EMI )
- reduce Crosstalk
- utilize 4-Pairs
UTP has a maximum distance of:
4-pairs
100 meters or 325 ft
Ethernet uses what type of connectors:
RJ-45
UTP’s have 2 terminating standards which are:
- TIA/EIA 568-A
- TIA/EIA 568-B
Which twisted pair used silver foil type wrapping around wires, and is great when heavy electricity is close?
Shielded Twisted Pair ( STP )
Cat 5 rating
100 meters distance and Max Bandwidth is 100 Mbps up to 1 Gbps
Cat 5e Rating
100 meters distance and Max Bandwidth is 1 Gbps ( also better EMI protection )
Cat 6 rating
55 Meters in distance and Max Bandwidth 10 Ggps ( only up to 55 meters with a 10GBASE-T network )
Cat 6a rating
100 meters in distance and Max Bandwidth is 10 Gbps ( better EMI and crosstalk protection )
Cat 7 Rating
100 meters in distance and Max Bandwidth 10+ Gbps
Cat 8 Rating
100 meters in distance and Max Bandwidth is 25 Gbps ( 40 Gbps at 30 meters, 40GBASE-T network )
UTP Ratings define the:
- Speed
- length of cables
Fiber optic Cables are made up of?
- Core
- Cladding
- Jacket
In fiber optics, this always has 2 connectors and are used on a Switch or Router
Fiber Card
What are the 2 modes of Fiber Optics?
- Single
- Multimode
Multimode uses what type of signal?
Led signals
Single mode uses what type of signal?
Laser signal, thinner fiber, cladding is tighter, long distance
Single mode color is:
Almost always yellow
Multimode color is:
Almost always orange
Fiber Duplex Cables has how many cables
2
oldest round fiber connectors are known as:
ST connectors / longer light conductor and twists in
oldest square fiber connectors are known as:
SC connectors / pushes in
another older round fiber connector is known as:
FC connectors / short light conductor and screws in
Newer square Fiber connector and is an actual double connector
LC connector and is beige
Newer single fiber connector ( has both fibers into the one connector:
MT-RJ connector and is black
PC ( Physical Contact ) polishing looks like
Square but slightly round edges
UPC ( Ultra Physical Contact ) polishing looks like
basically rounded edges / has less light loss than PC / high quality
APC 9 polishing looks like
Has a 7 degree angle / High quality
What are the 3 fire ratings:
- Plenum-Rated ( space between ceiling and roof / concrete and floor Higher rating / 2 to 3 time more expensive
- Riser-Rated ( goes between floors )
- PVC or non-plenum / lowest, no fire rating, and is non-plenum
2 Topologies are:
Physical - how a network is laid out.
Logical - Explains how data is sent between them.
What is the oldest Topology where computers share the same bandwidth and utilize “Drop Downs” or one single trunk
Bus Topology
IBM created - all computers are connected basically in a circle:
Ring Topology
Computers are plugged into a hub / switch in the center of the computers
Star Topology
