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Data Link Layer Sub layers· Logical Link Control (LLC) - upper layer· Handles control information, logical addressing and data· MAC (Medium Access Control) - lower layer· Proprietary to specific LAN product (e.g. Token Ring, Ethernet, Token Bus and so on)
· Resolves contention for the medium, provides synchronization, flow control, physical addressing, and error control specifications
Why are packets important in a network?
Control Frame: claim_token Consider first station turned on Station notices no tokens Sends claim_token No competitors, so makes a ring of just itself P
Features of FDM 1.The FDM channel carries only one phone circuit at a time. 2.If an FDM channel is not in sue then it is sits idle and cannot be used by other user
Determine about the Tree Topology A generalization of the bus topology. The transmission medium is a branching cable with no closed loops. The tree layout begins at a point kno
Distribution of DNS 1.By centralized data base The information contained in the domain name space must be stored. A simple design or DNS would have one DNS server that co
Multi Tasking Environment Multi tasking exploits parallelism by: 1) Concurrently using the multiple functional units 2) Pipelining functional units are pipe line toget
Destination unreachable Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Q. What do you mean by Modems? Telephone Modems - A telephone line has a bandwidth of approximately 2400 Hz for data transmission
The FORALL Statement The FORALL statement allows for more common assignments to sections of an array. A FORALL statement has the general form. FORALL ( triplet
When a P is returned when a Trace is run, it means the Protocol is unreachable.
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