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3 years ago

Which activity is the best example of a negative habit that may result from

Computers and Technology

1 answer:

AleksandrR [38]3 years ago

3 0

Answer:

Explanation:

Any of these is an example, but the most drastic would be D, Avoiding local friends in order to play online games

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A. True

svetlana [45]

Answer : True

Explanation: Vectors can hold, data of the same type and can automatically expand accordingly and change it’s size. The date stored in vectors should be linear.

- The syntax for vector is vector<int>v;

- Mostly this is used in C++ as an alternative to arrays

- If you want to use vector in your program then define it in the header first i.e.

#include <vector>

- Push back is a function, that is used to insert an element into the vector

- Pop back removes the element from the vector

6 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

When replacing a system board in a laptop, which feature is a must?

Sphinxa [80]

I would use a dual core Becuase a quad can be too space consuming and it can overheat the computers software

6 0

3 years ago

When the "swen" virus infected someone's system, it made significant changes to the registry that caused it to be extremely diff

Effectus [21]

In certain cases, when the Swen executable is removed or renamed by an anti virus program without stopping to fix the registry, it then will become impossible to run any executable files on the machine. This happens because windows will be unable to find the file that is associated with any executables on it's hard drive.

7 0

3 years ago

Which programming languages are the best choices for desktop applications? Select 3 options.

slega [8]

The three are Python c and html

5 0

3 years ago

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