1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marin [14]
3 years ago
13

One way to use contiguous allocation of the disk and not suffer from holes is to compact the disk every time a file is removed.

Since all files are contiguous, copying a
file squires a seek and rotational delay to read the file, followed by the transfer at full speed. Writing the file back requires the same work. Assuming a seek time of 5 msec, a rotational delay of 4 msec, a transfer rate of 8 MB/sec, and an average file size of 8 KB, how long does it take to read a file into main memory and then write it back to the disk at a new location? Using these numbers, how long would it take to compact half of a 16-GB disk?
Computers and Technology
1 answer:
Contact [7]3 years ago
4 0

Answer:

The answer is below

Explanation:

a) Seek time = 5 msec, transfer time = 4 msec, transfer rate = 8 MB/sec = 8000 KB/sec, average file size = 8 KB

Transfer time = 8 KB ÷ 8000 KB/sec = 1 msec

The time required to read and write is twice the sum of the seek and transfer time.

Total time = (5 msec + 4 msec) * 2 + 1 msec = 19 msec

b) half of 16 GB = 8 GB = 8000000 KB

number of read and writes = (8000000 KB of total file size/ 8 KB of average file size) * 2 = 2000000

Transfer rate = 8 MB/sec = 0.008 GB/sec

Transfer time = 8 GB ÷ 0.008 GB/sec = 1000 sec

Total time = (5 msec + 4msec) * 2000000 + 1000 sec = 19000 sec

You might be interested in
Convert (520)10 into base 16​
kakasveta [241]
The base-10 value of 52010 is equal to base-16 value of 20816.
3 0
3 years ago
Read 2 more answers
What are the means of hardware security?​
sdas [7]

Answer:

Hardware security is vulnerability protection that comes in the form of a physical device rather than software that is installed on the hardware of a computer system. ... Common examples include hardware firewalls and proxy servers.

Explanation:

Thank you

5 0
2 years ago
Read 2 more answers
Before you create a pivot table, it is important to __.
Reptile [31]

Before you create a pivot table, it is important to <em><u>Create a database</u></em>.

Option: A

<u>Procedure to create Pivot Table: </u>

1. Select the cells and table in the sheet containing the data you want to use.

2. Go to the Insert tab and click the PivotTable command.

3. In the dialog box ‘Create PivotTable’ will appear. Choose your settings, then click OK. In our example, we will use Sheet1 as our source data and insert the PivotTable on a new worksheet.

4. The Field List and blank PivotTable will appear on a new worksheet.

5. Once you create a PivotTable, you have to decide which fields to add. Each field has a simple column header from the source data. In the PivotTable Field List, check the box for each field you want to add.  

6. The selected fields will be added to one of the four areas below the Field List. In our example, the Salesman field has been added to the Rows area, while the Order Amount has been added to the Values area. Alternatively, you can click, hold, and drag a field to the desired area.

7. The PivotTable values will calculate and summarize the selected fields. In our example, the PivotTable shows the amount sold by each salesman.

8 0
3 years ago
Read 2 more answers
If you notice errors in your document in print preview, you need to correct them before you print by pressing ____ or clicking t
sweet-ann [11.9K]

Answer:

[Esc].

Explanation:

If there are errors in the document and I have noticed errors at the time of print preview then I should have pressed escape key to come out of the print preview and edit the document afterwards and then print the document without errors.

So what escape key does is that it takes you out of the print preview.

So we conclude that the answer is Escape key.

5 0
3 years ago
Why might you want to use a raid 0 disk configuration?
borishaifa [10]

Using a RAID 0 Disk Configuration, improves the overall disk performance of your computer. RAID 0 is commonly referred to as a stripe set or striped volume. RAID 0 splits the data equally through two or more disks, deprived of equivalent information, excess, or fault tolerance.

8 0
3 years ago
Other questions:
  • How would I view the ruler on my document if it was not visible
    9·1 answer
  • A decrease in the Short-Run Aggregate Supply Curve is associated with what?
    8·1 answer
  • The cyclical, multistep process by which designers and engineers design, build, and taste a new product is called:
    9·1 answer
  • DeShawn uses Google Ads. He wants to enable website call conversion tracking so he can see how his current ad campaign is drivin
    12·1 answer
  • Can you please answer these questions for me: Is it illegal to copyright? What does it mean to get copyrighted? What are example
    12·2 answers
  • How many bytes are in 1 kilobyte of storage
    13·1 answer
  • An indication of delayed fuel ignition could be​
    5·1 answer
  • Long Answer Questions: a. Briefly explain the types of Control Structures in QBASIC.​
    5·1 answer
  • You have a small business.Due to the recent pandemic you seem to be losing contacts with your suppliers and customers.You want t
    10·1 answer
  • What component of a change management program includes final testing that the software functions properly
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!