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DLCI- Data Link Connection Identifier. A frame-relay service provider usually assigns DLCI values that are used by frame-relay to distinguish among different virtual circuits on the network. For the IP devices at every end of a virtual circuit to communicate, their IP addresses are mapped to DlCI. Each DLCI value can have a global or local meaning.
Error control in TCP-duplicate & out-of-order segment- Duplicate segment - The destination TCP merely discards the segment Out-of-order segment - Not acknowledged unt
Q. Describe Physical Layer in OSI layers model? Physical Layer : Controls the transmission of the actual data onto the network. It describes the electrical signals, line state
It's a Hybrid device that joins the features of both bridges and routers.
Telephone companies (Telco's) stated ATM to meet various goals. It gives universal service for all support and subscribers for all users for video, voice and data. It has a single
What is route summarization
Q. What is Cross over cable? - Cross the critical pair to properly transmit, align and receive signals on devices with like connections. - Pin 1 connected to pin 3 as well a
a) Consider that a host is sending a frame of 1200 bytes to another host found 20 Kilometers away. (Assume that switching delay is negligible) i) Calculate the total latency (
Q. Example on Multiplicative Decrease? w = 1 for (each new ACK received) w = w+1 until (loss detected or w >= ssthresh) Not so slow - Exponential increase
Q. Example on audio transmission? admission policy - QoS mechanism; switches (routers) first check resource requirements of a flow before admitting it to the netwo
Computer Networking 1. Explain different network structures in use. 2. Elaborate the architecture and usage of ISDN. 3. Discuss the concept of framing in Data Link Layer
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