How long does it take to load a 128K program from a disk whose average seek...
How long does it take to load a 128K program from a disk whose
average seek time is 10ms, whose rotation time is 30ms, and whose
tracks hold 32K.
i. For a 2K page size
ii. For a 4K page size
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How long does it take to load a 128K program from a disk whose
average seek...
A) How long does it take to read 1,056,000 contiguous bytes from a disk with these...
A) How long does it take to read 1,056,000 contiguous bytes from a disk with these specs: Block (sector) size: 512 bytes Sectors per track: 180 IODCU overhead: 1.6 ms Seek time: 11 ms Rotation speed: 12,500 RPM B) A disk has 250 (512 byte) blocks per track and a data transfer rate of 22.4 Megabytes per second. What is the disk's rotational speed in revolutions per minute (RPM)?
9. a. What are the advantages of using a glass substrate for a magnetic disk? b....
9. a. What are the advantages of using a glass substrate for a magnetic disk? b. How are data written and read onto/from a magnetic disk? c. What common characteristics are shared by all RAID levels? Describe the seven RAID levels with appropriate illustrations. Explain the term striped data. How is redundancy achieved in a RAID system? d. Consider a 4-drive, 200GB-per-drive RAID array. What is the available data storage capacity for each of the RAID levels 0, 1, 3,...
2) b. A disk drive has a speed of 12000 RPM, an average seek time of...
2) b. A disk drive has a speed of 12000 RPM, an average seek time of 5 ms, and a transfer rate of 140 MB/sec. How much time does it take to perform 50 random reads of 10 KB? (In other words, the 50 reads are from random spots on the drive, but each individual read is performed sequentially.) Give your answer in units of seconds. c. Given the same information as in b) above, what is the I/O rate...
A program reads files from disk. It processes each file, then writes the processed file back to disk before reading and processing the next file. Assume that the reading of the file from a local disk...
A program reads files from disk. It processes each file, then writes the processed file back to disk before reading and processing the next file. Assume that the reading of the file from a local disk takes 5 ms, the processing of the file takes 10 ms, and the writing of the processed file back to the local disk takes 15 ms. How long does it take the program to process 100 files from the local disk? [5 marks] a....
Question 12 Consider a magnetic disk drive with 10 double sided platters, 512(=2^9) tracks per surface,...
Question 12 Consider a magnetic disk drive with 10 double sided platters, 512(=2^9) tracks per surface, and 1024 (=2^10) sectors per track. Sector size is 2KBytes (=2^10 Bytes ). Assume the average seek time 0.02 ms, the seek time from a track to its adjacent track can be ignored. The drive rotates at 5400 rpm. Successive tracks in a cylinder can be read without head movement. Furthermore, disks can be handled independently, so multiple tracks in a cylinder can be...
How long does it take to send a 8 MiB file from Host A to Host...
How long does it take to send a 8 MiB file from Host A to Host B over a circuit-switched network, assuming: Total link transmission rate = 99 Gbps. Network is TDM, with 15 permitted users, each with an equal time slot size. A link connection requires a setup time of 92.5 ms. Your answer should be in miliseconds (ms) with one decimal place, and without the unit (e.g. "140.6" without the quotes). Show steps to get to 102.7.
How long does it take, in minutes, for light to reach Earth from the Sun, a...
How long does it take, in minutes, for light to reach Earth from the Sun, a distance of 1.556 x 108 km? time: 4.69 x10-19 min Incorrect
How long does it take to have food delivered? A Chinese restaurant advertises that the average...
How long does it take to have food delivered? A Chinese restaurant advertises that the average delivery time will be no more than 30 minutes. A random sample of 16 delivery times (in minutes) showed a mean time of 28.9 minutes with a standard deviation of 6.1 minutes. Based on this sample, is the average delivery time less than 30 minutes? Use a 5% level of significance and assume that the distribution of delivery times is approximately bell-shaped. 1) What...
How long does it take to commute from home to work? It depends on several factors,...
How long does it take to commute from home to work? It depends on several factors, including route, traffic, and time of departure. The data below are results (in minutes) from a random sample of eight trips. 27 38 30 42 24 37 30 39 a. What is the sample mean and the sample standard deviation s? (Use Desmos.) Round your answers to the nearest tenth. b. Use these data to create a 95% confidence interval for the population mean time of the commute. Round your final answers...
2.33 +2.58 96 How long does it take to commute from home to work? It depends...
2.33 +2.58 96 How long does it take to commute from home to work? It depends on several factors, including route, traffic, and time of departure. The data below are results (in minutes) from a random sample of eight trips. 27 38 30 42 24 37 30 39 a.) What are the sample mean X and the sample standard deviation s points each) Hint: Enter the data set in the calculator or use the formulas in Chapter 2 to find...
9. a. What are the advantages of using a glass substrate for a magnetic disk? b. How are data written and read onto/from a magnetic disk? c. What common characteristics are shared by all RAID levels? Describe the seven RAID levels with appropriate illustrations. Explain the term striped data. How is redundancy achieved in a RAID system? d. Consider a 4-drive, 200GB-per-drive RAID array. What is the available data storage capacity for each of the RAID levels 0, 1, 3,...
A program reads files from disk. It processes each file, then writes the processed file back to disk before reading and processing the next file. Assume that the reading of the file from a local disk takes 5 ms, the processing of the file takes 10 ms, and the writing of the processed file back to the local disk takes 15 ms. How long does it take the program to process 100 files from the local disk? [5 marks] a....
How long does it take, in minutes, for light to reach Earth from the Sun, a distance of 1.556 x 108 km? time: 4.69 x10-19 min Incorrect
2.33 +2.58 96 How long does it take to commute from home to work? It depends on several factors, including route, traffic, and time of departure. The data below are results (in minutes) from a random sample of eight trips. 27 38 30 42 24 37 30 39 a.) What are the sample mean X and the sample standard deviation s points each) Hint: Enter the data set in the calculator or use the formulas in Chapter 2 to find...
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