What is the VIM Work buffer? What role does it play within VIM? Name two ways of writing the contents of the Work buffer to the disk.
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What is the VIM Work buffer? What role does it play within VIM?
Name two ways of writing the contents of the Work buffer to the disk.
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- True/false: 1. One of the I/O module functions is command decoding 2. With multiple zoned recording, the amount of data that can be stored on the outer long track is the same as that can be stored on the inner short tracks, 3. Using Winchester head mechanism, the head is in a physical contact with the disk surface when it is in motion. 4. Scanning information at the same rate by rotating the disk at a fixed speed is known as the constant angular velocity. 5. The disadvantage of the software poll is that it is time consuming 6. When large volumes of data are to be moved, the most efficient technique is direct memory access (DMA). 7. In semiconductor memory, soft errors are permanent. 8. File organization on disk has no effect on I/O performance. 9. DRAMs are more densę than SRAMs 10 The areas between pits are called landsWhen a file is saved to disk, the operating system is responsible for making sure that the blocks are stored in the right sequence. For what reason is this so crucial with regard to magnetic disks? Would it matter if SSDs were used instead, or would it be a non-issue? What gives?Calculate how much disk space (in whole sectors and tracks) will be required to store 1GB (230 bytes) of data if a disk is single-zoned with 512 bytes/sector and 1024 sectors/track. Ignore any file header record(s) and track indices.
- Operating systems take great pains to ensure that a file's succeeding blocks are written to a media block in sequential order. As we often interact with magnetic disks, why is it imperative that we do so?What is the average time to read or write a 512-byte sector for a typical disk rotating at 45,000 RPM? The advertised average seek time is 2 ms, the transfer rate is 400 MB/sec, and the controller overhead is 0.2 ms. Assume that the disk is idle so that there is no waiting time.The average time necessary for the correct sector of a disk to arrive at the read write head is Rotational delay Explain?
- When a file is saved to disc, it is the responsibility of the operating system to ensure that the data blocks are written in the right order. Is this a necessary step when talking about magnetic discs, and if so, why? If SSDs were used instead, would it make a difference, or is it irrelevant either way? So what gives here?Does caching disk write operations have any advantages or disadvantages?A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk- service routine, another I/O interrupt occurs. a) What happens next? b) Is it a problem?! c) If not, why not? If so, what can be done about it?
- Operating systems typically store a file's blocks to disk in a consecutive fashion. It's crucial to accomplish this with magnetic drives because, without using them, do you really value SSDs? Justify this observation.A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk-service routine, another I/O interrupt occurs.Q.) what can be done about it?When caching disk write operations, what are the pluses and minuses?