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CHAPTER 4: NETWORK ACCESS - Coggle Diagram
CHAPTER 4: NETWORK ACCESS
Physical Layer Standards
ANSI
568-C: RJ-45 pinouts. Co-developed with EIA/TIA
ITU-T
G.992: ADSL
EIA/TIA
TIA-569-B: Commercial Building Standards for Telecommunications Pathways and Spaces
TIA-598-C: Fiber optic color coding
TIA-568-C: Telecommunications cabling standards, used by nearly all voice, video and data networks.
TIA-942: Telecommunications Infrastructure Standard for Data Centers
IEEE
802.11: Wireless LAN (WLAN) & Mesh (Wi-Fi certification)
802.15: Bluetooth
802.3: Ethernet
ISO
ISO 11801: Network cabling standard similar to EIA/TIA 568.
ISO 8877: Officially adopted the RJ connectors (e.g., RJ-11, RJ-45)
Types of Physical Media
Gigabit Ethernet Interfaces
Fast Ethernet Switch Port
Management Ports
USB Mini B Connector
SHDSL Interface
USB Type A Connector
Characteristic of Copper Media
Voltage (Interference Signal) vs Time
Voltage (Digital Signal with Interference) vs Time
Voltage (Pure Digital Signal) vs Time
Y-axis= what the computer read, x-axis=changed signak (1,0)
Copper Media
Shielded Twisted Pair (STP) cable
Coaxial cable
Unshielded Twisted Pair (UTP) cable
Twisted-Pair: Protects the signal from interference
Outer Jacket: Protects the copper wire from physical damage
Color-coded Plastic Insulation: Electrically isolates wires from each other and identifies each pair
Copper Media Safety
Cables must be connected correctly
Installations must be inspected for damage
The separation of data and electrical power cabling must comply with safety codes
Equipment must be grounded correctly
UTP Cabling Standards
Category 7 Cable (ScTP)
Category 6 Cable (UTP)
Category 3 Cable (UTP)
Category 5 and 5e Cable (UTP(
used for data transmission
Cat 5 support 100 Mbps and can support 1000 Mbps but it is not recommended
Cat 5e supports 1000Mbps
Types of UTP Cable
Ethernet Crossover
Standard: One end T568A, other end T568B
-Connecting two network hosts, connecting two network intermediary devices (switch to switch or router to router)
Rollover
Cisco proprietary
Connect a workstation serial port to a router console port, using an adapter
Ethernet Straight-through
Standard: Both ends T568A or both ends T568B
Connecting a network host to a network device such as a switch or hub
Network Fiber Connectors
SC Connectors
LC Connectors
ST Connectors
Duplex Multimode LC Connectors
Type of Fiber Media
Multimode
Allows greater dispersion and therefore, loss of signal
Suited for long distance applications, but shorter than single mode
Larger core than single mode cable
uses LEDs as the light source
Commonly used with LANs or distances of a couple hundreds meters within a campus network
Single Mode
Suited for long distance application
Uses lesser as the light source
Less Dispersion
Commonly used with campus backbones for distance of several thousand meters
Small core
Physical LAN Topologies
Extended Star Topology
Bus Topology
Star Topology
Ring Topology