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Free Online IT Tutorials and Internet Training

Basic IT Tutorials

1. OSI Model
2. Concepts
   1. Digital vs. Analog
   2. Full Duplex
   3. Half Duplex
   4. Simplex
   5. Frames
   6. Packets
   7. PDU's
   8. Asynchronous
   9. Synchronous
   10. Circuits
   11. Media
   12. Parallel/Serial
   13. Point-to-Point
   14. Peer-to-Peer
   15. Client-Server
   16. Connection Oriented Protocols
   17. Connectionless Protocols
   18. Reliable vs. Unreliable
   19. CRC Check
3. Number Systems
   1. Binary
   2. Octal
   3. Decimal
   4. Hexadecimal
4. Signalling
   1. Signals
   2. Wavelength
   3. Phase
   4. Amplitude
   5. Frequency
   6. Carrier
   7. Analog vs. Digital
   8. Media
   9. Signal Power / Signal Strength
5. Modulation & Encoding
   1. Return to Zero
   2. Non-Return to Zero
   3. Quadrature Amplitude Modulation (QAM)
   4. 2B1Q
   5. AMI
   6. Manchester Encoding
   7. Differential Manchester Encoding

Computer Tutorials & Training

1. Hardware
   1. Motherboard
      1. Clock
      2. Multiplier
      3. Bus
      4. CPU,
      5. Memory,
      6. I/O Controller
      7. PCI & ISA
2. Software:
   1. Operating Systems:
      1. Berkeley Software Development UNIX (BSD UNIX)
      2. UNIX (Solaris)
      3. Linux
      4. HP-UX
      5. Microsoft Windows
         1. Server
            1. Server 2000
            2. Server 2003
            3. Server 2008
            4. Windows 7 Server
         2. Workstation
            1. Windows 95
            2. Windows 98
            3. Windows XP
            4. Windows Vista
            5. Windows 7 Workstation
      6. MacOS
   2. Drivers
   3. Applications

Network Tutorials & Training

1. Local Area Networks
   1. IEEE 802.x protocol Specification Documents (a list)
   2. Network Topologies
      1. Bus, Hub and Spoke (star), Point-to-Point, Point-to-Multipoint
   3. ARP / RARP (address resolution)
   4. BootP
   5. DHCP
   6. Bridging
   7. Switching
   8. Ethernet
   9. FDDI
   10. Token Ring
   11. ATM Local Area Network Emulation (ATM LANE)
2. Wide Area Networks
   1. Serial: v35, v.24, RS-232, EIA/TIA232;
   2. HDLC
   3. SDLC
   4. PPP
   5. ATM

Satellite Tutorials & Training

1. Basic Terms
   1. Antennas
   2. Amplifiers
      1. Travelling Wave Tube
      2. Klystron Tube
      3. Solid State
   3. Automatic Repeat Request
   4. Bandwidth Allocation
   5. Frequency
   6. Orbits
   7. Polarity
   8. Sun Outage
   9. Tracking
   10. Uplink Chain
   11. Wave Guide
2. Basic Concepts

Security Tutorials & Training

(Security Section Temporarilly Offline for Maintenance)

Internet Tutorials & Training

1. Internet Protocol (IP)
   1. Internet Control Message Protocol (ICMP)
   2. Transmission Control Protocol (TCP and TCP/IP)
      1. E-Mail
         1. Simple Mail Transfer Protocol (SMTP)
         2. Post Office Protocol v3 (POP3)
         3. Internet Message Access Protocol (IMAP)
      2. HypeText Transport Protocol (HTTP)
      3. File Transfer Protocol (FTP)
      4. Telnet
      5. Secure SHell (ssh)
   3. User Datagram Protocol (UDP and UDP/IP)
      1. Domain Name Service (DNS)
      2. Network Time Protocol (NTP)
      3. Simple Network Management Protocol (SNMP)
      4. Trivial File Transfer Protocol (TFTP)
2. Internet Protocol v6 (next generation/IPnG)
3. Internet Relay Chat (IRC)
4. Multi-Protocol Label Switching (MPLS)
5. Multicast
   1. Internet Gateway Management Protocol (IGMP)
6. Network News Transport Protocol (NNTP)
7. Quality Of Service
8. Simple Network Time Protocol (SNTP)
9. Voice over Internet Protocol (VoIP)

World Wide Web Training

1. Web Servers
2. Web Browsers
3. Web Pages
4. Web Portals
5. Search Engines
6. HypeText Transport Protocol (HTTP)
7. HTML (Creating a web page)
8. SGML
9. Cascading Style Sheets (CSS)
10. CGI Scripting
    1. Server Side Includes
    2. JavaScript
    3. Perl / PHP
    4. ASP / JScript / VBScript
11. Java

Telecommunications Tutorials & Training

1. Public Switched Telephone Network (North America)
2. X.25 (grandfather of all telecom protocols)
3. Frame Relay
4. Switched Multi-megabit Data Services (SMDS)
5. Integrated Services Digital Network (ISDN)
6. Digital Signalling System
7. n-Carrier systems
   T-Carrier T1 T2 T3 T4
   J-Carrier J1 J2 J3 J4
   E-Carrier E1 E2 E3 E4
8. Optical Cabling
   OC3, OC12, OC48, OC192
9. SONET
10. Synchronous Digital Hierarchy (SDH)
11. xDSL
12. Signalling System 7
13. Asynchronous Transfer Mode (ATM)
14. Cellular

Troubleshooting Tutorials & Training

1. Fundamentals
2. IP Connectivity
3. LAN Troubleshooting
4. Building a Support Toolkit

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