Lab4s1 - Lab 4 Supplement Notes Network Protocol Review 1...

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1 Lab 4 Supplement Notes Network Protocol Review
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2 Open Systems Interconnection (OSI) Model
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3 OSI 7-Layer Model
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4 OSI Layers • A typical message as it appears on the network. 2-2
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5 Media Access Control (MAC) • The lower sublayer of the OSI data link layer. • The MAC differs for various physical media • MAC address is the hardware address of a device connected to a shared network medium MAC encapsulation of a packet of data
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6 Internet Protocol (IP) • The network layer for the TCP/IP protocol suite widely used on Ethernet networks, • IP is a connectionless, best-effort packet switching protocol. It provides packet routing, fragmentation and re-assembly through the data link layer.
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7 IP Header 0 1 3 4 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Version| HL |Type of Service| Total Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Identification |Flags| Fragment Offset | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Time to Live | Protocol | Header Checksum | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Source Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Destination Address
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This note was uploaded on 05/18/2010 for the course INFORMATIO IEG7006 taught by Professor Unknown during the Spring '10 term at CUHK.

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Lab4s1 - Lab 4 Supplement Notes Network Protocol Review 1...

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