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Q. Why would it be an awful idea for gateways to pass broadcast packets between networks? What would be the merite of doing so?
Answer: All broadcasts would be spreads to all networks causing a lot of network traffic. If broadcast traffic were restricted to important data (and very little of it) then broadcast propagation would save gateways from having to run special software to watch for this data (such as network routing information) as well as rebroadcast it.
What is the purpose of the command interpreter? Why is it usually separate from the kernel? It reads commands from the user or from a file of commands and executes them, usuall
Define Latency plus seek time The total time to arrange a disk drive mechanism for a block of data to be read from is its Latency plus seeks time
what is network operating? explain about it design issues?
Define caching. A cache is a region of fast memory that holds copies of data. Access to the cached copy is well-organized than access to the original. Caching and buffering are
What are the various page replacement algorithms used for page replacement? FIFO page replacement Optimal page replacement LRU page replacement LRU approximat
Ask question #Minimum 100 words accepted application of bounded and unbounded buffers
How does user specify block to be fetched in direct access? By specifying the relative block number, relative to first block in file, which is block 0.
Direct memory access Many computers avoid burdening the main CPU with programmed I/O by offloading sine if this work to a special-purpose processor known as a direct memory add
Applications allocate memory in terms of the number of bytes that they need, but this level of granularity is too ?ne-grained for the operating system to manage the system memory i
How is a process chosen for being swapped either in or out? Swap out: a. If the process is idle. b. If process has been in main memory for a long time.
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