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Explain typical packet switching network configuration.
Packet Switching: In packet switching the nodes handle greatly smaller data length than are determined in message switching. This message is divided before transmission in a series of sections of data termed as data packets having a length of little thousand bits. This method has a number of advantages. Initially, the short packets experience minimum delay in progress by the network. The method utilized is even a store and forward process but because the packets are small they are rapidly copied by each node and needs little memory space. Second by appending a sequence number to each packet and also its destination address the nodes are capable to interleave packets from some various sources and this leads to more efficient utilization of the transmission media. Figure demonstrates how this interleaving can function.
Interleaving of packets in network
Two approaches are applied to the technique in which the stream of mixed packets is handled through nodes. These concepts are termed as datagram and the virtual circuit.
Accessing a Cache: Direct mapping: (Block address) modulo (Number of cache block in the cache) The valid bit indicate whether an entry contain a valid address.
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a ship is loaded with a stock of 3 items each unit of item n has a wt wn and vn the max cargo wt the ship can take is the details of 3items are item(n):1 2 3 wt(wn):2 3 1 value(vn)
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Input Output Techniques: o Interrupt driven o Direct Memory Access (DMA) o Programmed Programmed I/O CPU has control over I/O directly Read/write
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Http Hyper Text Transfer Protocol: The WWW protocol that performs the request and regain functions of a server. Generally seen as the first part of a website address. It is t
List the factors that determine the storage device performance. i.Access time ii.Cycle time iii.Transfer Rate.
Explain Protection mechanism. Protection mechanism: The subsequent mechanisms are commonly utilized for protecting files having programs and data. (a) Access controls list
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