Chapter 4: Network Access

Chapter 4: Network Access

1. Physical layer protocols

   • Physical layer connection
     • Connection types
       • Domestic router
       • LAN network connection connected by cable.
     • Network interface cards
       • Wired connection via an ethernet NIC.
       • Connection to the wireless LAN network with a range extender.
   • Purpose of the physical layer
     • Physical layer
       • Provides the means for transporting the bits that make up a frame of the data link layer through the network means.
     • Physical layer media
       • Copper wire
       • Fiber optic cable
       • Wireless connection
     • Physical layer standards
       • ISO
       • ITU
       • IEEE
       • ANSI
       • EIA/TIA
   • Characteristics of the physical layer
     • Functions
       • Physical components
       • Codificación
       • Signaling
     • Bandwidth
       • It is the ability of a medium to transport data.
     • Performance
       • The amount of traffic
       • The type of traffic
       • Number of devices between the origin and destination.
     • Types of physical media
       • This physical layer produces the representation and grouping of bits in voltages, radiofrequency and light pulses

2. Network media

   • Copper wiring
     • Copper Wiring Features
       • EMI
       • RFI
       • Crosstalk
     • Copper media
       • UTP
       • STP
       • Coaxial
     • Unshielded twisted pair cable
       • interconnect network hosts with intermediary network devices, such as switches and routers.
     • Shielded twisted pair cable
       • Combine shielding techniques
     • Coaxial cable
       • Wireless installations
       • Internet cable facilities
     • Security of copper media
       • Device properly grounded.
       • Cables connected correctly.
   • UTP cabling
     • UTP cabling properties
     • UTP cabling standards
     • UTP connectors
     • Types of UTP cables
       • Direct Ethernet Cable
       • Ethernet crossover cable
     • UTP cable check
     • Cable Pin Diagram
   • Fiber optic cabling
     • Fiber optic cabling properties
     • Fiber optic media cable design
     • Types of fiber optic media
     • Fiber optic connectors
       • ST
       • SC
       • WSA
       • LCD
     • Fiber optic cable test
     • Comparison between optical fiber and copper
   • Wireless media
     • Types of wireless media
       • Bluetooth
       • WI-fi
       • WiMax
     • Wireless media properties
     • Wireless LAN

3. Data link layer protocols

   • Purpose of the data link layer
     • The data link layer
     • Data Link Sublayers
       • LLC
       • MAC
     • Provision of media access
     • Media access control
     • Data Link Layer Standards
       • IEEE
       • ITU
       • ISO
       • ANSI

4. Media access control

   • Topologies
     • Media access control
     • Physical and logical topologies
   • WAN topologies
     • Common WAN physical topologies
       • point by point
       • Hub-and-spoke
       • Mesh
     • Point-to-point physical topology
     • Point-to-point logical topology
   • LAN topologies
     • LAN physical topologies
       • Star
       • Bus
       • Ring
     • Half duplex y full duplex
     • Media access control methods
     • Containment access: CSMA / CD
     • Containment access: CSMA / CA
   • Data link frame
     • The plot
       • Header
       • Data
       • Trailer
     • Plot fields
     • Layer 2 Address
     • LAN and WAN frames