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Consider a disk on which the rate at which it can read sequentially laid out data is 100 MBps. Average seek time on the disk is 5 milliseconds and that the disk rotates at 5400 RPM. You may ignore transfer delays (i.e., consider only seek time and rotational latency). Assume all indexing blocks (directory/i-node) are cached in memory; you only have to account for the data block accesses. If you need to, you may assume that each track holds 200 blocks.
(1) If the block size used by the file system is 4 KB and all blocks are randomly distributed across the disk, how long will it take for an application to read a file of size 1 GB?
(2) Repeat 1, assuming that the blocks were allocated contiguously.
Write a reflection paper on the various types of positions and how they apply to your field. List three specific kinds of opportunities you could pursue to gain more experience to be better prepared for your field. Explain how each of those experi..
Give the sizes and offsets of the sequence of fragments delivered to the network layer at the destination host. Assume all IP headers are 20 bytes.
What is the decimal value of the following IEEE 754 single-precision floating-point number?
The moon is poorly approximated by diffuse or Phong shading. What observations tell you that this is true?
How did they propose to control this danger?
Let W be a random variable giving the number of heads minus the number of tails in three tosses of a coin.
Write a Python function to get the first half of a specified string of even length. Suppose the input string is "Python", after calling the function, we should see the output "Pyt".
If a thread has locked a mutex and then attempts to lock the mutex again, typically as a result of some recursive call in a complicated call graph, then either an assertion failure will be reported or the thread will deadlock. Suggest a reason for..
Assuming real RTTs can be estimated to within 40 ms, about how many tries would you expect it to take to implement the strategy of part (a) with the un simplified "increment every 4 μs" TCP implementation?
Suppose temperatures are real numbers chosen uniformly and at random from some fixed range of values. On average, how many tuples will be retained, as a function of N?
Should an organization's ability to collect and process data on exponentially increasing scales be limited in any way? Does the fact that information can be architected for a particular purpose mean it should be, even if by so doing individual pri..
Refer again to the information about the Reliable Pharmaceutical Service (RPS) at the end of Chapter 1, "The World of the Information Systems Analyst."
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