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1 year ago

your company decides to implement a RAID-5 array on several file servers. Which feature is provided by this deployment

Computers and Technology

1 answer:

Novay_Z [31]1 year ago

4 0

Answer:

High availability

Explanation:

RAID-5 array is defined as a redundant array for independent disk configuration which makes use of the disk striping with the parity. It consists of a minimum three disk drives and it uses the data striping and the parity data to provide the redundancy.

RAID 5 is a powerful tool to ensure integrity of the data. It provides both performance as well as security to the data.

In the context, "high availability" is the feature that is provided by the deployment of RAID 5 array on the several file services.

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Write a loop that displays all possible combinations of two letters where the letters are 'a', or 'b', or 'c', or 'd', or 'e'. T

Dafna11 [192]

Answer:

for (char outerChar='a'; outerChar<='e'; outerChar++){

for (char innerChar='a'; innerChar<='e'; innerChar++){

cout << outerChar << innerChar << "\n";

}

3 0

1 year ago

Given sphereRadius and piVal, compute the volume of a sphere and assign to sphereVolume. Look up the equation online (e.g., http

fenix001 [56]

Answer:

#include <stdio.h>
int main()
{
const double piVal = 3.14159;
double sphereVolume = 0.0;
double sphereRadius = 0.0;
sphereRadius = 1.0;
sphereVolume = 4.0/ 3.0 * piVal * sphereRadius * sphereRadius * sphereRadius;
printf("Sphere volume: %lf\n", sphereVolume);
return 0;
}

Explanation:

Firstly we can identify the formula to calculate volume of sphere which is

Volume = 4/3 $\pi r^{3}$

With this formula in mind, we can apply this formula to calculate the volume of sphere in Line 10. This is important to perform floating-point division 4.0/3.0 to ensure the resulting value is a floating value as well. Since we have been given piVal and sphereRadius, we can just multiply the result of floating-point division with piVal and sphereRadius and get the sphereVolume value.

At last, display the sphere volume using printf method (Line 13).

6 0

2 years ago

A file ____ includes the three or four characters that follow the dot in the filename and identify the files type.

vodka [1.7K]

A file extension includes the three or four characters that follow the dot in the file name

6 0

1 year ago

Read 2 more answers

Assume that you have a list of n home maintenance/repair tasks (numbered from 1 to n ) that must be done in numeric order on you

tangare [24]

Answer:

Explanation:

(a) The recurrence relation for the given problem is :

T(n) = T(n-1) + T(n-4) + 1

(b) The O(n) time recursive algorithm with memoization for the above recurrence is given below :

Create a 1-d array 'memo' of size, n (1-based indexing) and initialize its elements with -1.

func : a recursive function that accepts the cost array and startingJobNo and returns the minimum cost for doing the jobs from startingJobNo to n.

Algorithm :

func(costArr[], startingJobNo){

if(startingJobNo>n)

then return 0

END if

if(memo[startingJobNo] != -1)

then return memo[startingJobNo];

END if

int ans1 = func(costArr, startingJobNo+1) + costArr[startingJobNo]

int ans2 = func(costArr, startingJobNo+4) + h

memo[startingJobNo] = min(ans1,ans2);

return memo[startingJobNo];

}

(c)

First, Create a 1-d array 'dp' of size, N+1.

dp[0] = 0

bottomUp(int c[]){

for i=1 till i = n

dp[i] = min(dp[i-1] + c[i], dp[max(0,i-4)] + h);

END FOR

return dp[n];

}

(d)

Modifying the algorithm given in part (b) as follows to know which job to do yourself and in which jobs we need to hire a handyman.

First, Create a 1-d array 'memo' of size, n (1-based indexing) and initialize its elements with -1.

Next, Create another 1-d array 'worker' of size,n (1-based indexing) and initialize its elements with character 'y' representing yourself.

Algorithm :

func(costArr[], startingJobNo){

if(startingJobNo>n)

then return 0

END if

if(memo[startingJobNo] != -1)

then return memo[startingJobNo];

END if

int ans1 = func(costArr, startingJobNo+1) + costArr[startingJobNo]

int ans2 = func(costArr, startingJobNo+4) + h

if(ans2 < ans1)

THEN

for (i = startingJobNo; i<startingJobNo+4 and i<=n; i++)

// mark worker[i] with 'h' representing that we need to hire a mechanic for that job

worker[i] = 'h';

END for

END if

memo[startingJobNo] = min(ans1,ans2);

return memo[startingJobNo];

}

//the worker array will contain 'y' or 'h' representing whether the ith job is to be done 'yourself' or by 'hired man' respectively.

4 0

1 year ago

This program will calculate the rise in ocean levels over 5, 10, and 50 years, Part of the program has been written for you. The

GREYUIT [131]

Answer:

Here is the C++ program:

#include <iostream> //to use input output functions

using namespace std; //to identify objects cin cout

int main(){ //start of main method

double risingLevel; //declares a double type variable to hold rising level

cin>>risingLevel; //reads the value of risingLevel from user

cout<<"Level: "<<risingLevel<<endl; //displays the rising level

cout << "Years: 5, Rise: " << risingLevel * 5<<endl; //displays the rise in ocean level over 5 years

cout << "Years: 10, Rise: " << risingLevel * 10<<endl; //displays the rise in ocean level over 10 years

cout << "Years: 50, Rise: " << risingLevel * 50<<endl; //displays the rise in ocean level over 50 years

}

Explanation:

The program works as follows:

Lets say the user enters rising level 2.1 then,

risingLevel = 2.1

Now the first print (cout) statement :

cout<<"Level: "<<risingLevel<<endl; prints the value of risingLevel on output screen. So this statement displays:

Level: 2.1

Next, the program control moves to the statement:

cout << "Years: 5, Rise: " << risingLevel * 5<<endl;

which computes the rise in ocean levels over 5 years by formula:

risingLevel * 5 = 2.1 * 5 = 10.5

It then displays the computed value on output screen. So this statement displays:

Years: 5, Rise: 10.5 Next, the program control moves to the statement:

cout << "Years: 10, Rise: " << risingLevel * 10<<endl;

which computes the rise in ocean levels over 10 years by formula:

risingLevel * 10 = 2.1 * 10 = 21

It then displays the computed value on output screen. So this statement displays:

Years: 10, Rise: 21

Next, the program control moves to the statement:

cout << "Years: 50, Rise: " << risingLevel * 50<<endl;

which computes the rise in ocean levels over 50 years by formula:

risingLevel * 50 = 2.1 * 50 = 105

It then displays the computed value on output screen. So this statement displays:

Years: 50, Rise: 105 Hence the output of the entire program is:

Level: 2.1 Years: 5, Rise: 10.5 Years: 10, Rise: 21 Years: 50, Rise: 105

The screenshot of the program and its output is attached.

4 0

2 years ago