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Switching via memory
Traditional computers with switching between input and output being doen under direct control of the CPU input and output ports functioned as traditional I/O devices in a traditional operating systems. Aninput port with an arriving packet first signalled the routing processor. The packet was then copied from the input port into processor memory. The routing processor then extract the destination address from the heard looked up the appropriate output port in the forwarding table and the packet to the output buffers. Note that if memory bandwidth is B packets per second can be written into or read from memory them the overall forwarding throughput ( the total rate at which packets are transferred from input ports to output ports ) must be less than B/2.
The "ipx delay number" command will permit an administrator to alter the default settings. Explain the default settings? Ans) For LAN interfaces, one tick; for WAN interfaces, s
What is Round Trip Time? The duration of time it takes to send a message from one end of a network to the other and back, is known as RTT.
Explain the importance of authentication. Authentication is the method of verifying a user's credentials before he can log into the network. It is normally performed using a us
Most real-life applications are built on top of the UDP and TCP transport protocols. UDP, which stands for User Datagram Protocol, provides the capability of delivering individual
The steps of forwarding the packets of information is known routing. The information about receivers is saved in routing tables. Note that several entries have same next hop. It is
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differntiate between error control and flow control in data link layer
Options Negotiation To use any of the options first requires option negotiation between the client and server. Four control characters are used for this purpose.
What is NOS? NOS, or Network Operating System, are specialized software whose major task is to give network connectivity to a computer in order for it to be able to converse wi
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