ComputerScienceExpert

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About ComputerScienceExpert

Levels Tought:
Elementary,Middle School,High School,College,University,PHD

Expertise:
Applied Sciences,Calculus See all
Applied Sciences,Calculus,Chemistry,Computer Science,Environmental science,Information Systems,Science Hide all
Teaching Since: Apr 2017
Last Sign in: 5 Weeks Ago, 3 Days Ago
Questions Answered: 4870
Tutorials Posted: 4863

Education

  • MBA IT, Mater in Science and Technology
    Devry
    Jul-1996 - Jul-2000

Experience

  • Professor
    Devry University
    Mar-2010 - Oct-2016

Category > Programming Posted 23 Apr 2017 My Price 9.00

block of data from a disk to memory

Q1:     In terms of performance gains, what role does an I/O controller located inside the peripheral device perform? (50 to 100 words should be sufficient to answer this question)

 

 

Q2:     Consider the steps required to write a block of data from a disk to memory. Outline the major sequence of I/O events that must occur to make this possible.  (There are three major steps)

 

 

Q3:     What is the capacity of a hard drive (in GB) consisting of 120,000 tracks, 4,000 sectors, and 4 surfaces? Assume each block has 512 bytes. Show Your Work

 

 

Q4:  Explain what is meant by wear-leveling in Flash drives?

 

 

 

Q5:     There are two levels of scheduling. One level of scheduling determines which jobs will be admitted to the system and in what order. What does the other level of scheduling do?

 

 

 

 

Q6:     Why is it so important that access to system services by application program be controlled through APIs?

 

 

 

Q7: How many 512 byte blocks are required to store a 1.6MB file? Show Your Work

 

 

 

Q8: Describe the Bitmap method for maintaining free space on a disk.

 

 

Q9: In servicing read and write requests for a disk, how does First-come, first-served (FCFS) scheduling work? And, why is FCFS inefficient?

 

 

Q10: In a preemptive system, what is a 'time-out'?

 

NameRobert WeddleAnswer the questions clearly, explain your answer, and show your work.Answers, even ifright but without an explanation, will get no credit.The explanations need to be brief, butcomplete, logical, and to the point.Do not quote anybody else, use your own words.Answer in the space provided or add lines if really needed. Each question is worth 10points!Q1:In terms of performance gains, what role does an I/O controller located inside theperipheral device perform? (50 to 100 words should be sufficient to answer this question)Q2:Consider the steps required to write a block of data from a disk to memory. Outlinethe major sequence of I/O events that must occur to make this possible.(There are threemajor steps)Q3:What is the capacity of a hard drive (in GB) consisting of 120,000 tracks, 4,000sectors, and 4 surfaces? Assume each block has 512 bytes. Show Your WorkQ4: Explain what is meant by wear-leveling in Flash drives?Q5:There are two levels of scheduling. One level of scheduling determines which jobswill be admitted to the system and in what order. What does the other level of schedulingdo?

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(11)
Status NEW Posted 23 Apr 2017 04:04 PM My Price 9.00

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