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7 Cards in this Set
- Front
- Back
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layer 1 physical |
specifies how bit streams are to be transmitted over a physical link in the network. includes mechanical, electrical and procedural characteristics of device interconnection
examples: RS-232; V.35; 10bT; RJ48C G.703/G.704 |
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layer 2 Data Link |
functions: 1-allows a device to access the network to send and receive messages. 2-offers a physical address so a device's data can be sent on the network 3-works with a device's networking software when sending and receiving messages 4-provides error-detection capability
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layer 3 The Network Layer |
provides an end-to-end logical addressing system so that a packet of data can be routed across several layer 2 networks (Ethernet, Token Ring, Frame Relay, etc) |
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layer 4 The Transport Layer |
offers end-to-end communication between end devices through a network. |
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Layer 5 The Session Layer |
provides services like tracking the number of bytes that each end of the session has acknowledged receiving form the other end of the sessions. it allows applications functioning on devices to establish, mange and terminate a dialog through a network |
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layer 6 The Presentation Layer
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responsible for how an application formats the data to be sent out onto the network. allows an application to understand the message |
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layer 7 The Application Layer |
provides an interface for the end user operating a device connected to a net-work. Is what users see |
