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goldfiish [28.3K]
3 years ago
14

For an external usb hard drive attached to a computer, which is more suitable: a writethrough cache or a block cache

Computers and Technology
2 answers:
Charra [1.4K]3 years ago
6 0

Disk access is way slower than memory access. Caching is a technique to improve the disk access time.  Block cache is a caching technique which reduces disk accesses time.  Here a portion of disk is bought to cache for reading and a modified blocks are first changed in cache but reflected in the disk at one go.  On the other hand with write through caching each modified block is written to cache and at the same time it is written to the disk.  Write- through caching requires more disk I/O so they can have a negative effect on the performance. 

Stolb23 [73]3 years ago
3 0

Answer:

block cache

Explanation:

    An integrated cache is a layer of memory that automatically caches frequently accessed data through the source database.

    Block cache is used to store blocks read from disks. This means that a small buffer cache will cause Oracle to cache data blocks following the LAST RECENTLY USED list, and depending on how often this happens, can lead to a drop in performance.

    There is no magic to sizing the block cache, what you usually do is estimate an initial size and monitor the hit, if it is not optimal, you will need to lengthen and repeat the monitoring cycle.

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write an algorithm that gets the price for item A plus the quantity purchased. The algorithm prints the total cost, including a
I am Lyosha [343]

Answer:

<u>Algorithm() </u>

1. p = Enter the price of item A.

2. c = Enter the number of A’s purchased.

3. Now the price per item with tax is:

              t= p+(p*6/100)

4. The total cost of c items:  

             ct= t * c.

5. Print ct.

In this algorithm, we are taking the price per item and counting it’s cost including tax. Then we are multiplying the price per item with tax with the number of items we purchase, to find the overall cost with tax.

You may calculate the overall cost without tax as (p*c). Then you can find the overall cost with tax as ((p*c)+(p*c*6/100)), as in both way, we will get the same result.

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A spreadsheet contains the maximum weight and maximum height for fifty dog breeds. The breeds are located in rows, and the weigh
MrRa [10]

Answer:

a. Locate

Explanation:

Question options (obtained on the net):

a. Locate

b. Sort

c. Filter

d. Replace

Explanation:

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The 'MAX' formula or the 'Autosum' tool can be used to give the largest value in a row, or column

To locate the maximum value in MS Excel, the ADDRESS and MATCH and MAX functions are combined and entered into the blank cell on the right, specifying the same range for the MAX and MATCH functions, and a '0' for the MATCH function as well as a '1' for the ADDRESS function as follows;

=ADDRESS(MATCH(MAX(A1:E1), A1:E1, 0), 1)

Therefore, to navigate to the maximum weight, Emily should use a <em>locate</em>(ing) tool navigate to the information on the spread sheet

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Answer:

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