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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.
Example Programmes for Parallel Systems Now we shall complete this with the examples on shared memory programming. Example 13: Adding elements of an array using two proce
Dual Homed Host Architecture This setup consists of a host machine with two or more IP addresses for each of its physical port. One port is connected to intranet and other to the
The application for this assignment is somewhat arti?cial. Normally, an application would not interact directly with IP. Instead, it would create a UDP or TCP socket and interact w
Q. Explain Types of Redundancy Checks? Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redund
Q. Example on TCP numbering? Envision a TCP connection is transferring a file of 6000 bytes. The first byte is numbered 10010. What are the sequence numbers for every seg
What is Kerberos in Networking? It is an authentication service developed at the Massachusetts Institute of Technology. Kerberos uses encryption to stop intruders from discover
1. A low voltage digital device has a low state of 0 V and a high state of 1.8 V. It generates a signal train of high pulses at a rate of 1 MHz, these pulses having a 10 ns width a
What are MAC addresses? MAC, or Media Access Control, uniquely identifies a device on the network. It is also called as physical address or Ethernet address. A MAC address is m
On a lan where are ip datagram transported?
Hybrid Networks Allows an organization to have its own private networks and at the same time access to the global internet. the organization may share its information w
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