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12345 [234]
3 years ago
7

What are the two biggest strength as a student

Computers and Technology
2 answers:
vladimir1956 [14]3 years ago
7 0

Answer:

knowledge and your brain ,food

aleksandrvk [35]3 years ago
3 0
Knowledge, and your brain.
You might be interested in
It takes 2 seconds to read or write one block from/to disk and it also takes 1 second of CPU time to merge one block of records.
Alexxx [7]

Answer:

Part a: For optimal 4-way merging, initiate with one dummy run of size 0 and merge this with the 3 smallest runs. Than merge the result to the remaining 3 runs to get a merged run of length 6000 records.

Part b: The optimal 4-way  merging takes about 249 seconds.

Explanation:

The complete question is missing while searching for the question online, a similar question is found which is solved as below:

Part a

<em>For optimal 4-way merging, we need one dummy run with size 0.</em>

  1. Merge 4 runs with size 0, 500, 800, and 1000 to produce a run with a run length of 2300. The new run length is calculated as follows L_{mrg}=L_0+L_1+L_2+L_3=0+500+800+1000=2300
  2. Merge the run as made in step 1 with the remaining 3 runs bearing length 1000, 1200, 1500. The merged run length is 6000 and is calculated as follows

       L_{merged}=L_{mrg}+L_4+L_5+L_6=2300+1000+1200+1500=6000

<em>The resulting run has length 6000 records</em>.

Part b

<u><em>For step 1</em></u>

Input Output Time

Input Output Time is given as

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}

Here

  • L_run is 2300 for step 01
  • Size_block is 100 as given
  • Time_{I/O per block} is 2 sec

So

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}\\T_{I.O}=\frac{2300}{100} \times 2 sec\\T_{I.O}=46 sec

So the input/output time is 46 seconds for step 01.

CPU  Time

CPU Time is given as

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}

Here

  • L_run is 2300 for step 01
  • Size_block is 100 as given
  • Time_{CPU per block} is 1 sec

So

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}\\T_{CPU}=\frac{2300}{100} \times 1 sec\\T_{CPU}=23 sec

So the CPU  time is 23 seconds for step 01.

Total time in step 01

T_{step-01}=T_{I.O}+T_{CPU}\\T_{step-01}=46+23\\T_{step-01}=69 sec\\

Total time in step 01 is 69 seconds.

<u><em>For step 2</em></u>

Input Output Time

Input Output Time is given as

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}

Here

  • L_run is 6000 for step 02
  • Size_block is 100 as given
  • Time_{I/O per block} is 2 sec

So

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}\\T_{I.O}=\frac{6000}{100} \times 2 sec\\T_{I.O}=120 sec

So the input/output time is 120 seconds for step 02.

CPU  Time

CPU Time is given as

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}

Here

  • L_run is 6000 for step 02
  • Size_block is 100 as given
  • Time_{CPU per block} is 1 sec

So

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}\\T_{CPU}=\frac{6000}{100} \times 1 sec\\T_{CPU}=60 sec

So the CPU  time is 60 seconds for step 02.

Total time in step 02

T_{step-02}=T_{I.O}+T_{CPU}\\T_{step-02}=120+60\\T_{step-02}=180 sec\\

Total time in step 02 is 180 seconds

Merging Time (Total)

<em>Now  the total time for merging is given as </em>

T_{merge}=T_{step-01}+T_{step-02}\\T_{merge}=69+180\\T_{merge}=249 sec\\

Total time in merging is 249 seconds seconds

5 0
3 years ago
The process of making raw materials into a finished product is known as
Olin [163]
1.) Business Engineering or Manufacturing :)
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6 0
3 years ago
Read 2 more answers
Which of the following are peripheral devices?
Fittoniya [83]

Explanation:

I think it's speakers,

7 0
3 years ago
Read 2 more answers
Write a public member function which replace that replaces one occurrence of a given item in the ArrayBag with another passed as
ira [324]

Answer:

The method is written in Java

public static boolean abc(int [] ArrayBag,int num, int replace){

    Boolean done = false;

    for(int i =0; i<ArrayBag.length;i++){

        if(ArrayBag[i] == num){

            ArrayBag[i] = replace;

            done = true;

        }

    }

    for(int i = 0;i<ArrayBag.length;i++){

        System.out.println(ArrayBag[i]+" ");

    }

    return done;

}

Explanation:

The method is written in java

The arguments of the method are:

<em>1. ArrayBag -> The array declares as integer</em>

<em>2. num -> The array element to check the presence</em>

<em>3. replace - > The replacement variable</em>

This line defines the method as boolean.

public static boolean abc(int [] ArrayBag,int num, int replace){

This line declares a boolean variable as false

    Boolean done = false;

The following iterates through the elements of the array

    for(int i =0; i<ArrayBag.length;i++){

This checks if the array element exist

        if(ArrayBag[i] == num){

If yes, the array element is replaced

            ArrayBag[i] = replace;

The boolean variable is updated from false to true

            done = true;

        }

    }

The following iteration prints the elements of the array

<em>     for(int i = 0;i<ArrayBag.length;i++){</em>

<em>         System.out.println(ArrayBag[i]+" ");</em>

<em>     }</em>

This prints returns the boolean thats indicates if replacement was done or not.

    return done;

}

<em>Attached to this solution is the program source file that includes the main method of the program</em>

Download txt
5 0
3 years ago
Two electronics technicians are discussing electrical quantities. Technician A says that resistance is an opposition to electric
inessss [21]
Neither are correct.

Resistance is opposition to CURRENT not power.
Technition B Is wrong about the voltage thingy.
6 0
3 years ago
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