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LAN Technologies: Broadcast, Collision, CSMACD and CSMACA

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Time

19 minutes

Difficulty

Intermediate

LAN Technologies: Broadcast, Collision, CSMACD and CSMACA This lesson discusses the technologies of Local Area Networks (LANs). The technologies of Local Area Networks include: Broadcast: sends to all, only on one side of router Collision: ...

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LAN Technologies: Broadcast, Collision, CSMACD and CSMACA This lesson discusses the technologies of Local Area Networks (LANs). The technologies of Local Area Networks include:

Broadcast: sends to all, only on one side of router
Collision: two devices transmit simultaneously, data on same line collides and corrupts, there needs to be ways to avoid collisions.
CSMA/CD: carrier sense, multiple access, collision detection.
CSMA/CA: carrier sense, multiple access, collision avoidance

OSI and TCP/IP Models Overview

OSI Model Layer 1 Physical

OSI Model Layer 2 Data Link

OSI Model Layer 3 Network

OSI Model Layer 4 Transport

OSI Model Layer 5 Session

OSI Model Layer 6 Presentation

OSI Model Layer 7 Application

OSI Model Shipping Model

TCP/IP Model Overview

Devices & Protocols in Relation to OSI Model (part 1)

Devices & Protocols in Relation to OSI Model (part 2)

IP Addresses in Relation to OSI Model

IP Address Classes

Subnetting (part 1)

Subnetting (part 2)

Unicast, Multicast and Broadcast

Routing and Switching (part 1)

Routing and Switching (part 2)

Routing Metrics

Dynamic Routing Tables

Spanning Tree Protocol

Broadcast vs Collision Domain

TCP/IP Suite (part 1)

TCP/IP Suite (part 2)

Communications Protocols: TCP

Communications Protocols: UDP

Internet Control Message Protocol

Address Resolution Protocol

Port Communication Endpoints

Protocols: FTP, TFTP, SFTP, SMTP, POP3 and IMAP

Protocols: HTTP and HTTPS

Protocols: Telnet, SSH and RDP

Protocols: SNMP, NTP and TLS

Protocols: DNS and DHCP

Protocols: SIP and RTP

What is DNS? (part 1)

What is DNS? (part 2) - The Internal DNS Server

DNS Servers (part 1) - Specific functions of the DNS Server

DNS Records (part 2)

Troubleshooting Theory

Identify the Problem and Establish a Theory

Test Theory to Determine Cause and Establish POA

Implement Solution and Verify Functionality

Document Findings / Actions / Outcomes

Networking Virtual Computers

Virtual Switches

Virtual Desktops

Virtual Servers

Onsite vs Offsite

NAT and PAT (part 1)

NAT and PAT (part 2) - IP Address Types

VLAN and VTP Configuration

Managed vs Unmanaged and Interface Config

POE, Traffic Filtering, Diagnostics and QoS

WAP Placement and Antenna Types

Interference and Frequencies (part 1)

Interference and Frequencies (part 2) - Gigahertz Frequencies

Wireless Standards, Channel Bonding and MIMO

Compatibility and SSID

DHCP Overview and Static vs Dynamic

Reservations, Scopes and Leases

Options (DNS, Suffixes)

Interference, Signal Strength and Bounce

Configurations, Incompatibilities, Incorrect Channel and Latency

Encryption Type, SSID Mismatch and Incorrect Switch Placement

Switching Loop, Bad Cables, Port Configuration and VLAN Assignment

Mismatched MTU, Bad Modules, Power Failure and Missing Routes

Wrong Subnet Mask, Wrong Gateway, Duplicate IP Address and Wrong DNS

List Requirements

Device Types / Requirements

Environment and Equipment Limitations

Compatibility Requirements

Fiber Connectors (part 1) - Cable Connections

Fiber Connectors (part 2)

Copper Twisted Pair

Copper Twisted Pair - How to Create a Cable

RJ11, DB-9 and Plenum vs PVS

Media Converters and BPL

Patch Panel and 110 Block

Wireless Standards: Frequencies (part 1)

Wireless Standards: Frequencies (part 2) - Channels

Wireless Standards: Channel Bonding and MIMO

WAN, Circuit vs Packet Switching and Transmission Media

Dedicated Leased Lines - PPP

Frame Relay and Asynchronous Transfer Mode

Telephone Lines

DSL (Digital Line Subscriber)

Fiber Technologies

Wireless Technologies

Network Topologies: Network Categories

Network Topologies: Peer to Peer and Client Server

Network Topologies: Point to Point and Point to Multipoint

Network Topologies: Mesh

Network Topologies: Ring

Network Topologies: Bus

Network Topologies: Star

Network Topologies: Hybrid

Network Topologies: Multi-Protocol Label Switching

LAN Technologies: Ethernet I-EEE

LAN Technologies: Base T

LAN Technologies: Broadcast, Collision, CSMACD and CSMACA

LAN Technologies - Bonding

MDF, IDF, Demarc and Demarc Extension

Smart Jack and Vertical Cabling vs Horizontal Cross Connect

Network Appliances: Additional Network Functionality

Network Appliances: Load Balancer

Network Appliances: Proxy Server

Network Appliances: Content Filter

Network Appliances: VPN Concentrator

Cable Tester, Toner Probe, Cable Certifier and Butt Set

Crimper, Punch Down Tool, Protocol Analyzer and Loop Back Plug (part 1)

Crimper, Punch Down Tool, Protocol Analyzer and Loop Back Plug (part 2)

Crimper, Punch Down Tool, Protocol Analyzer and Loop Back Plug (part 3)

TDR, OTDR, Multimeter and Environmental Monitor

Protocol Analyzer, Throughput Testers and Connectivity Software

Command Line Commands (part 1) - Using the ping and tracert commands

Command Line Commands (part 2) - Using the ipconfig and the NS lookup commands

Dig, Arp, nbt stat and netstat

SNMP, SNMPv2 and SNMPv3

Syslog and Event Viewer

General Logs, History Logs, Traffic Analysis and Protocol Analyzer

Wire Schemes, Cable Management, Network Maps and Documentation

Asset Management, Baselines and Change Management

Latency Sensitivity and High Bandwidth Apps

Quality of Service and Traffic Shaping

High Availability and Caching Engines

Fault Tolerance and CARP

Encryption and Device Signal / Placement - A History of Implementing WiFi Security Measures

Encryption and Device Signal / Placement

Access Control List

Tunneling and Encryption

Virtual Private Networks (VPNs) Explained

IPSec / IP Security

SSH (Secure Shell)

What is Authentication?

Let's Talk Encryption - Algorithms

Symmetric Encryption and Asymmetric Encryption

Overview of Public Key Infrastructure (PKI)

Overview of Kerberos

Authentication, Authorization and Accounting

Remote Authentication Dial in User Service (RADIUS)

Terminal Access Controller Access Control System (TACAS)

Network Access Control

Challenge Handshake Authentication Protocol (CHAP) and Extensible Authentication Protocol (EAP)

Wireless (part 1) Common Threats, vulnerabilities and mitigation techniques

Wireless (part 2) Rogue Access Points

Attacks (part 1) Non Wireless Attacks

Attacks (part 2) Social Engineering and other attacks

Traffic Sniffing, FTP Bounce and Smurf

Software vs Hardware Firewalls, Port Security and Additional Features

Stateful Inspection vs Packet Filtering and Firewall Rules

NATPAT and DMZ-DeMilitarized Zone

Vulnerability Scanners

Capturing Methods