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Network Transport Systems
• Ethernet - random access (IEEE 802.3) 10/100 Mb/s
• Token ring- controlled by passing a token (IEEE 802.5) 4/16Mb/s
• FDDI - Fiber Distributed Data Interface (token)
• Arcnet - Attached Resource Computer Net (token star-bus)
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Ethernet
Most widely used type of network for PC environments
Ethernet Protocol -
• Uses CSMA/CD (Carrier Sense Multiple Access with Collision Detect)
• Unique address for each NIC (MAC address)
• Data encapsulated in packets.
Types of Ethernet physical connection
Typical Network Interface Card
for Ethernet with Coax and UTP
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Common types of Ethernet cabling
• 10Base-5: 10Mbps using RG-8 or RG-11 50 ohm coaxial cable to transmit baseband signals in 500-meter segments.100 nodes per segment, maximum length of network is 2.5Km. This is also known as Thick Ethernet.
• 10Base-2: 10Mbps using RG-58 50 ohm coaxial cable to transmit baseband signals on 200-meter segments. 30 nodes per segment, maximum length of network is under 1Km. This is also known as Thin Ethernet.
• 10Base-T: 10 Mbps using UTP cabling (CAT5) and RJ45 connector jacks to transmit baseband signals on 100-meter segments. 512 nodes per segment, maximum of 1024 nodes in total.This is also known as Twisted-pair Ethernet.
Other variations of Ethernet connections -
• Fast Ethernet 100 Mbs, 100Base-XX
• Fibre Optic 10Base-FL, 100Base-FL
• Gigabit Ethernet 1000Base-XX
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Types of Ethernet cards
Typical Network Interface Card
with coaxial cable - 10Base2
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Types of Ethernet cards
Typical Network Interface Card
with Unshielded twisted pair cable - 10BaseT
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CSMA/CD - (Carrier Sense Multiple Access with Collision Detect)
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SOFTWARE PROTOCOLS
TCP/IP - Internet protocol
IP Addresses eg 123.34.56.75
IPX/SPX - Novell Netware
Net BEUI - Microsoft NetBios Extended User Interface
Apple Talk - Apple computers
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