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3 years ago

2.

Computers and Technology

2 answers:

taurus [48]3 years ago

5 0

Answer:

Explanation:

BaLLatris [955]3 years ago

4 0

Answer:

B. i < list.length

Explanation:

This question is terribly worded, but I assume the meaning is which answer will not result in an error if it's used in the while condition of the for loop. The correct answer is b. i < list.length is telling the loop to continue as long as the variable i is less than the length of the array list.

Answers C and D could potentially be valid under certain circumstances, but very unusual. Answer A will give an error as list[list.length] will give an undefined value (assuming this is indeed javascript and not some other languge).

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Class 10 computer unit 1 all excersise

kenny6666 [7]

Y’all just asking for people do your work, literally not even a question

5 0

3 years ago

Oxnard Casualty wants to ensure that their e-mail server has 99.98 percent reliability. They will use several independent server

sattari [20]

Answer:

The smallest number of servers required is 3 servers

Explanation:

Given

$Reliability = 99.98\%$

$Individual Servers = 95\%$

Required

Minimum number of servers needed

Let p represent the probability that a server is reliable and the probability that it wont be reliable be represented with q

Such that

$p = 95\%\\$

It should be noted that probabilities always add up to 1;

So,

$p + q = 1$ '

Subtract p from both sides

$p - p + q = 1 - p$

$q = 1 - p$

Substitute $p = 95\%\\$

$q = 1 - 95\%$

Convert % to fraction

$q = 1 - \frac{95}{100}$

Convert fraction to decimal

$q = 1 - 0.95$

$q = 0.05$

------------------------------------------------------------------------------------------------

To get an expression for one server

The probabilities of 1 servers having 99.98% reliability is as follows;

$p = 99.98\%$

Recall that probabilities always add up to 1;

So,

$p + q = 1$

Subtract q from both sides

$p + q - q = 1 - q$

$p = 1 - q$

So,

$p = 1 - q = 99.98\%$

$1 - q = 99.98\%$

Let the number of servers be represented with n

The above expression becomes

$1 - q^n = 99.98\%$

Convert percent to fraction

$1 - q^n = \frac{9998}{10000}$

Convert fraction to decimal

$1 - q^n = 0.9998$

Add $q^n$ to both sides

$1 - q^n + q^n= 0.9998 + q^n$

$1 = 0.9998 + q^n$

Subtract 0.9998 from both sides

$1 - 0.9998 = 0.9998 - 0.9998 + q^n$

$1 - 0.9998 = q^n$

$0.0002 = q^n$

Recall that $q = 0.05$

So, the expression becomes

$0.0002 = 0.05^n$

Take Log of both sides

$Log(0.0002) = Log(0.05^n)$

From laws of logarithm $Loga^b = bLoga$

So,

$Log(0.0002) = Log(0.05^n)$ becomes

$Log(0.0002) = nLog(0.05)$

Divide both sides by $Log0.05$

$\frac{Log(0.0002)}{Log(0.05)} = \frac{nLog(0.05)}{Log(0.05)}$

$\frac{Log(0.0002)}{Log(0.05)} = n$

$n = \frac{Log(0.0002)}{Log(0.05)}$

$n = \frac{-3.69897000434}{-1.30102999566}$

$n = 2.84310893421$

$n = 3 (Approximated)$

Hence, the smallest number of servers required is 3 servers

6 0

3 years ago

Eugene wants to indent a paragraph, but the ruler is not present. Which tabs could Eugene use in order to accomplish his goal?

Anton [14]

He could either use the tab key to indent, if you want to make the ruler visible, you can go to the view tab and click the check mark next to show ruler.

8 0

3 years ago

Read 2 more answers

________ programs help solve the problem of running out of storage space by providing lists of application programs, stored vide

Leviafan [203]

Answer:

Storage management

Explanation:

The programs that do this are known as Storage management programs. They are incredibly useful since they allow you to see which files are taking up the most amount of space as well as the importance that each file has on the system. Many of these programs have a different visual representation of the files such as pie charts or system blocks showing the percentage of space it is taking up. Everything in these programs is made to help the end-user visualize and analyze their data thoroughly.

7 0

3 years ago

The birthday paradox says that the probability that two people in a room will have the same birthday is more than half, provided

poizon [28]

Answer:

The Java code is given below with appropriate comments for explanation

Explanation:

// java code to contradict birth day paradox

import java.util.Random;

public class BirthDayParadox

{

public static void main(String[] args)

{

Random randNum = new Random();

int people = 5;

int[] birth_Day = new int[365+1];

// setting up birthsdays

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

birth_Day[i] = i + 1;

int iteration;

// varying number n

while (people <= 100)

{

System.out.println("Number of people: " + people);

// creating new birth day array

int[] newbirth_Day = new int[people];

int count = 0;

iteration = 100000;

while(iteration != 0)

{

count = 0;

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

{

// generating random birth day

int day = randNum.nextInt(365);

newbirth_Day[i] = birth_Day[day];

}

// check for same birthdays

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

{

int bday = newbirth_Day[i];

for (int j = i+1; j < newbirth_Day.length; j++)

{

if (bday == newbirth_Day[j])

{

count++;

break;

}

iteration = iteration - 1;

}

System.out.println("Probability: " + count + "/" + 100000);

System.out.println();

people += 5;

}

4 0

3 years ago