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Q. What is an Error?
At any time bits flow from one point to another they are subject to unpredictable changes because of interference
The interference is able to change the shape of the signal thus the bit value either from -1? to -0? or from -0? to -1?
Q. Define Name Space in domain name system? - All names assigned to machines on an internet - Must be unique; either flat or hierarchical - Flat name space - name is assi
Demarcation is the point in which responsibility changes hands.
Q. Quality of Service - multiplicative decrease? Quality of Service The collective consequence of service performance which determines the degree of satisfaction of a
Q. Example on audio transmission? admission policy - QoS mechanism; switches (routers) first check resource requirements of a flow before admitting it to the netwo
No Retransmission This protocols will not through the correctly received packets but buffers than and send acknowledgment for those packets. Thus retransmission of th
Simple Mail Transfer Protocols (SMTP) The application layer protocols for electronic mail is SMTP( Simple mail transfer protocols). Internet electronic mail has man
Load the Router with the Supplied Scripts Enable ! config term ! hostname Router1 ! enable secret class ! no ip domain-lookup ! interface FastEth
Disadvantages of Fiber Optics - Installation/maintenance - Unidirectional - Cost
Q. Show a simplex Stop and Wait automatic repeat request? A simplex Stop and Wait ARQ - Normal Operation - Frame lost - Acknowledgement lost - Acknowledgement de
Vector-Distance algorithm illustrated in more detail below: Packet switches wait for next update message and they goes by entries in packet. If entry has least path to destinat
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