In a non-price rationing system, consumers receive goods and services first-come, first served. Give me an example of a time when a consumer may experience this.

Answer:

The technology of information communication has the capacity to transform society. It plays a key part and provides the infrastructure needed to achieve each of the United Nations Sustainable Development Goals. It also allows financial integration by m-commerce and lets people connect instantly to millions.

ICT has a particularly important impact on business. It allows people to exchange knowledge and advice immediately and establish a website or online shop at a low cost, thus reducing the obstacles to starting a business dramatically. As such, it is a major factor in change and the maturity of ICTs is strongly connected to economic growth.

Explanation:

Effects of ICT

As a human beings, we are always associated in our everyday life with many essential things. The use of ICT equipment in our lifestyle has simplified many time-consuming calculations and difficult tasks, and social contacts have been strengthened. ICT has affected life by enhancing the timely distribution of media information and improved home and workplace communications via social networking, e-mail, etc.

The quality of human life has been greatly improved by ICT. For example, it could take a few days for a letter to come to the recipient, but a single minute for an e-mail to reach. ICT offers a broader understanding and information for each facility  24 Hrs X 7 days. In the following, ICT affects different fields of daily living.

Positive Impacts of ICT:

Negative Impacts of ICT:

Answer:

Wi-fi refers to a network that is based on the 802.11 standard.

Answer:

It is based on the 802.11 standard

Explanation:

Answer:

Add more servers or decrease the amount of workstations

To stop broadcast storms one can enable the use of Storm Detect feature that can help to disable a port if it is getting a lot of number of Broadcast or Multicast packets.

A broadcast storm is known to be a kind of bad or high number of broadcast packets that occurs in a little or  short time frame.

Note that To stop broadcast storms one can enable the use of Storm Detect feature that can help to disable a port if it is getting a lot of number of Broadcast or Multicast packets.

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Answer:

An example of file system performance optimization is Caching - i.e. keep in memory a collection of blocks that logically belong on the disk, for performance reasons.

Explanation:

Caching - i.e. keep in memory a collection of blocks that logically belong on the disk, for performance reasons.

The ultimate frequent method employed to decrease the duration of disk elucidated as a collection of books i.e similar kind that is preserved in invisible area.

Answer:

a. This is an instance of overfitting.

Explanation:

In data modeling and machine learning practice, data modeling begins with model training whereby the training data is used to train and fit a prediction model. When a trained model performs well on training data and has low accuracy on the test data, then we say say the model is overfitting. This means that the model is memorizing rather Than learning and hence, model fits the data too well, hence, making the model unable to perform well on the test or validation set. A model which underfits will fail to perform well on both the training and validation set.

Answer:

The modified program in Python is as follows:

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

wall_width = int(input('Enter wall width (feet):\n'))

area = wall_height*wall_width

print('Wall area:',area,'square feet')

paint_needed = area/350.0

print('Paint needed: {:.2f} gallons'.format(paint_needed))

print('Cans needed:',round(paint_needed),'can(s)')

color = input("Choose a color to paint the wall: ")

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Explanation:

The italicized are given from the question [unchanged]

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

This gets input for width

wall_width = int(input('Enter wall width (feet):\n'))

Calculate the wall area

area = wall_height*wall_width

Print the calculated wall area

print('Wall area:',area,'square feet')

Calculate the amount of paint needed

paint_needed = area/350.0

Print the amount of paint needed to 2 decimal places

print('Paint needed: {:.2f} gallons'.format(paint_needed))

Print the amount of can needed to nearest integer

print('Cans needed:',round(paint_needed),'can(s)')

Prompt user for color of paint [here, we assume the user input is correct]

color = input("Choose a color to paint the wall: ")

Prints the corresponding amount for the color

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Answer:

C

Explanation:

The statements about the relationship between hardware and software that is true is: D. Software consists of instructions that tell the hardware what to do.

A hardware can be defined as the physical components of an information technology (IT) system that can be seen and touched such as:

Conversely, a software refer to a set of executable codes (instructions) that is primarily used to instruct a computer hardware on how it should process data, perform a specific task or solve a particular problem.

In conclusion, a software consist of a set of executable codes (instructions) that tell a computer hardware what to do.

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Answer:

b=0

c=0

lol=list()

while True:

   salary=input("Enter your salary: ")

   if salary=="e" or salary=="E":

       print("Thankyou!!")

       break

   else:

       a=int(salary)

       if a>=300000 and a<=400000:

            c=c+1

       if a<0 or a>400000:

           print("Your salary is either too small or too big ")

       if a>0 and a<=400000:

           a=a-(25/100*a)-(5/100*a)-(2/100*a)

           lol.append(a)

           b=b+1

           if a>=300000:

                c=c+1

print(lol)

print("The number of salaries entered is: "+ str(b))

print("The number of salaries that exceeded 300000 is: "+str(c))

Answer:

To qualify as a primary key, it is the data within each column that must be unique, not simply the column names themselves. At the same time, no value in the columns can be blank or NULL. A primary key, therefore, is used to ensure the data in a specific column is unique.

Explanation:

hope it's help

Answer:

D. Iterative design

Explanation:

An iterative design can be defined as a cyclic process which typically involves prototyping, testing, evaluating or analyzing and refining of a product, so as to continually improve the product.

In an iterative design process, the following steps are adopted;

1. A prototype of the product is first created and tested by the manufacturer.

2. The product is then evaluated to check for any defect or flaw.

3. The defect or flaw is fixed through a refining process.

4. The previous steps are repeated incrementally until an improved version of the product is created.

Hence, cycling through the design process to create several models that incrementally improve a solution is called iterative design.

Answer:

Iterative Design

Explanation:

A. It seeks to figure what it defective

B. It reaffirms if all requirements are met to solve a problem

C. It's main goal was to avoid excess products that might not end up making sales in the near future

D. Making several revision on problems to take out an efficient solution

D makes the most sense here.

Answer:

True

Explanation:

A pointer can be used as a function argument, giving the function access to the original argument.

Answer:

H-Br bond is polar, hydrogen is partly positive and bromine is partly negative

H-Cl bond is polar, hydrogen is partly positive and bromine is partly negative

O-H bond in water is polar, hydrogen is partly positive and oxygen is partly negative

C-O bond in CH40 is polar, carbon is partly positive and oxygen is partly negative

Explanation:

A molecule possess a dipole moment when there is a large difference in electro negativity between two bonding atoms in the molecule.

The presence of dipole moments introduces polarity to the molecule. In all the molecules listed in the answer, the shared electron pair of the bond is closer to the more electronegative atom causing it to be partially negative while the less electronegative atom in the bond is partially positive.

Answer:

is the application of food science to the selection, preservation, processing, packaging, distribution, and use of safe food. Related fields include analytical chemistry, biotechnology, engineering, nutrition, quality control, and food safety management.

Explanation:

Answer:

B: ztest(dataframe, null hypothesis value)

The Python method that is used to perform a test of hypothesis for a population mean with an unknown population standard deviation is d. ttest_1samp(dataframe, null hypothesis value).

Thus, the only Python method to carry out hypothesis testing with unknown population standard deviation is the t-test, which is given in option d.

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Answer:

name and address of web visitors.

Explanation:

A website refers to the collective name used to describe series of web pages linked together with the same domain name.

Web analytical packages are software features that are typically used for tracking the identity of a computer system by placing or adding cookies to the computer when it's used to visit a particular website. Thus, it's only used for tracking the identity of a computer but not the computer users.

This ultimately implies that, web analytical packages can obtain the geographic location, Internet connection type, and navigation source information when someone visits a website, but it cannot obtain the name and address of web visitors or users.

Available options are:

A. Technical champions

B. Engaged filmmakers

C. Business partners

D. Compliance champions

Answer:

Technical champions

Explanation:

Given that a "Technical Champion" is someone whose responsibility is to introduce and perform the role of enabling the use of technology, development of skills across the organization, and strengthen communication between Information Technology and the staff or employees.

Hence, in this case, considering the job descriptions described in the question above, these individuals would best be described as TECHNICAL CHAMPIONS

Answer:

The program in Python is as follows:

pival = 3.142

sphereradius = float(input("Radius: "))

spherevolume = [tex](4.0 / 3.0)[/tex] * [tex]pival[/tex] * sphereradius * [tex]sphereradius[/tex] * sphereradius

print(spherevolume)

Explanation:

The missing part of the program is to calculate the volume of a sphere.

The program in Python (in the answer section) is implemented using the already used variables.

Initialize pi

pival = 3.142

Get input for radius

sphereradius = float(input("Radius: "))

Calculate the volume

spherevolume = [tex](4.0 / 3.0)[/tex] * [tex]pival[/tex] * sphereradius * [tex]sphereradius[/tex] * sphereradius

Print the calculated volume

print(spherevolume)

Answer:

The following classifications can be made of the computer systems:

1. According to size.

2. Functionality based on this.

3. Data management based. 

Explanation:

Servers:-

Servers are only computers that are configured to offer clients certain services. Depending on the service they offer, they are named. For example security server, server database.

Workstation:-

These are the computers which have been designed mainly for single users. They operate multi-user systems. They are the ones we use for our daily business/personal work.

Information appliances:-

They are portable devices that perform a limited number of tasks such as basic computations, multimedia playback, internet navigation, etc. They are commonly known as mobile devices. It has very limited storage and flexibility and is usually "as-is" based.

Answer:

DCUKE

Explanation:

Given that,

Code for JAVA = LCXC

To find,

Code for BASIC = ?

As we observe the pattern,

In "JAVA", every letter moved two-letter forward in their alphabetical order or we can say that every third alphabet of the given letter is used to make the code:

J + 2 = L

A + 2 = C

V + 2 = X

A + 2 = C

Similarly,

B + 2 = D

A + 2  = C

S + 2 = U

I + 2  = K

C + 2 = E

Thus, DCUKE is the code for BASIC.

The code for BASIC given the code for JAVA is; DCUKE

We are given the code for JAVA as LCXC

From that code for "JAVA", we see that every letter is moved forward two letters in their alphabetical order. This means

Similarly for BASIC;

Thus, finally the code for BASIC is DCUKE

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Answer:

#include <iostream>

using namespace std;

template <typename T> int sgn(T val) {

   return (T(0) < val) - (val < T(0));

}

int main()

{

   cout << "Enter a number: ";

   int number;

   cin >> number;

   switch (sgn(number)) {

   case -1: cout << "The number is negative";

       break;

   case 0: cout << "The number is zero";

       break;

   case 1: cout << "The number is positive";

       break;

   }

}

Explanation:

You need the special sgn() function because a switch() statement can only choose from a list of discrete values (cases).

Answer:

its either sort or file menu

Answer:

Here is the output.

Explanation:

import java.util.Arrays;  

public class Main{  

   public static void main(String[] args){        

       int[] array={43,42,23,42,4,56,36,7,8,676,54};

       System.out.println(Arrays.toString(array));

       printArray(array,"*");

       System.out.println(""+getFirst(array));

       System.out.println(""+getLast(array));

       System.out.println(Arrays.toString(getAllButFirst(array)));

       System.out.println(""+getIndexOfMin(array));

       System.out.println(""+getIndexOfMax(array));

       System.out.println(Arrays.toString(swapByIndex(array, 1,2)));

       System.out.println(Arrays.toString(removeAtIndex(array,3)));

       System.out.println(Arrays.toString(insertAtIndex(array,3,65)));

   }  

   //---1----

   public static void printArray(int[] arr, String sep){  

       for(int i=0; i<arr.length-1;i++){  

           System.out.print(" "+arr[i]+" "+sep);  

       }  

       System.out.println(" "+arr[arr.length-1]);  

   }  

   //---2----  

   public static int getFirst(int[] arr){  

       return arr[0];  

   }

   //---3----  

   public static int getLast(int[] arr){  

       return arr[arr.length-1];  

   }  

   //---4-----  

   public static int[] getAllButFirst(int[] arr){  

       int[] anotherArray=new int[arr.length-1];  

       for(int i=1; i<arr.length;i++){  

           anotherArray[i-1]=arr[i];  

       }

       return anotherArray;

   }

//---5------  

   public static int getIndexOfMin(int[] arr){  

       int index=0;  

       int min=arr[0];  

       for(int i=1; i<arr.length;i++){  

           if(min>arr[i]){  

               min=arr[i];  

               index=i;  

           }  

       }

       return index;  

   }  

   //---6------  

   public static int getIndexOfMax(int[] arr){  

       int index=0;  

       int max=arr[0];  

       for(int i=1; i<arr.length;i++){  

           if(max<arr[i]){  

               max=arr[i];  

               index=i;  

           }  

       }  

       return index;  

   }  

   //---7------  

   public static int[] swapByIndex(int[] arr, int a , int b){  

       int temp=arr[a];  

       arr[a]=arr[b];  

       arr[b]=temp;  

       return arr;  

   }  

   //---8------  

   public static int[] removeAtIndex(int[] arr, int index){  

       int[] anotherArray = new int[arr.length - 1];  

for (int i = 0, k = 0; i < arr.length; i++) {  

if (i == index) {  

continue;  

}  

anotherArray[k++] = arr[i];  

}  

// return the resultant array  

return anotherArray;  

   }  

//---9------  

   public static int[] insertAtIndex(int[] arr, int index, int element){  

       int[] anotherArray = new int[arr.length + 1];  

for (int i = 0, k=0;k < arr.length+1; k++) {  

if (k == index) {  

anotherArray[k]=element;  

               continue;  

}  

anotherArray[k] = arr[i++];  

}  

// return the resultant array  

return anotherArray;  

   }  

//---10------  

   public static boolean isSorted(int[] arr){  

       for(int i=0; i<arr.length-1;i++){  

           if (arr[i+1]<arr[i]){  

               return false;  

           }  

       }  

       return true;  

   }  

}

Answer:

The method and the test cases is as follows:

import java.util.*;

public class Main{

public static void printChars (char [tex]ch1[/tex], char [tex]ch2[/tex], int [tex]numPerLine[/tex]){

    int count = 0;

    for(char ch = ch1; ch<=ch2; ch++){

        System.out.print(ch+" ");

        count++;

        if(count == numPerLine){

            System.out.println();

            count = 0;         }     }

    System.out.println(); }

public static void main(String[] args) {

 printChars('1','Z',10);

 printChars('a','z',13);

 printChars('A','Z',13);

}}

Explanation:

See attachment for complete source file where comments are used as explanation

Explanation:

The following six steps must be followed to solve a problem using computer.

Problem Analysis.

Program Design - Algorithm, Flowchart and Pseudocode.

Coding.

Compilation and Execution.

Debugging and Testing.

Program Documentation.

Answer:

Learn, I think hope this works?

Explanation:

(b) 14 days

In the presence of thousands of mails each day or week, controlling what items to keep in an archive for cleaning up purposes becomes important. To do this, Outlook comes with an option called AutoArchive. The default setting in relation to when AutoArchive will run is 14 days. To change this setting, user will need to do the following:

i. Navigate to File  > Options > Advanced

ii. Under the AutoArchive menu, click on the AutoArchive settings

iii. Change the settings however way they want.

Answer:

That's correct it's 14 days

Explanation:

:) hope it helps

Answer:

He should: Format the text file with comma-separated values and save as CSV file type. ]

Explanation:

hope this helps!

Answer:

c

Explanation:

Answer:

Option A, Font Dialog Box

Explanation:

In order to make changes in the text formatting, the font setting in the dialog box can be used on the Ribbon's Home tab.

From the font settings in Word 2016, one can change the following change font color, size, style etc.

Hence, option A is correct

Answer:

I believe the correct answer is B. bus

Explanation:

The bus is the internal part that connects CPU and other parts to the rest of the computer.

The part that connects the CPU to the other internal parts of a computer is the bus. The correct option is B.

A motherboard, a central processor unit, a graphics processing unit, random access memory, and a hard disc or solid-state drive are the five fundamental components of every computer.

Every computer has 5 components, whether it is a high-end gaming system or a simple desktop system for kids. The CPU is the brain of your computer; it is responsible for all programming and computation. The motherboard, however, serves as the computer's brain, using circuits to link the CPU to other hardware components including memory, a hard drive, a CD/DVD drive, and all of your peripherals.

Therefore, the correct option is B. bus

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    //======METHOD DECLARATION=========//          

    //method name: nicknames                                          

    //method return type: void                                            

    //method parameter: an array reference                    

    public static void nicknames(String [] names){      

       //initialize the array with 5 random names              

       names = new String[] {"John", "Doe", "Brian", "Loveth", "Chris"};

       //using an enhanced for loop, print out the elements in the array

       for(String n: names){

           System.out.print(n + " ");

       }

    }

The program is written in Java. It contains comments explaining important parts of the code. Kindly go through these comments.

A few things to note.

i. Since the method does not return any value, its return type is void

ii. The method is made public so that it can be accessible anywhere in and out of the class the uses it.

iii. The method is made static since it will most probably be called in the static main method (at least for testing in this case)

iv. The method receives an array of type String as parameter since the names to be stored are of type String.

v. The format of initializing an array manually should follow as shown on line 7. The new keyword followed by the array type (String), followed by the square brackets ([]) are all important.

vi. An enhanced for loop (lines 9 - 11) is a shorthand way of writing a for loop. The format is as follows;

=> The keyword for

=> followed by an opening parenthesis

=> followed by the type of each of the elements in the array. Type String in this case.

=> followed by a variable name. This holds an element per cycle of the loop.

=> followed by a column

=> followed by the array

=> followed by the closing parenthesis.

=> followed by a pair of curly parentheses serving as a block containing the  code to be executed in every cycle of the loop. In this case, the array elements, each held in turn by variable n, will be printed followed by a space.

A complete code and sample output for testing purposes are shown as follows:

==================================================

public class Tester{

    //The main method

    public static void main(String []args){

       String [] names = new String[5];

       nicknames(names);

    }

  //The nicknames method

    public static void nicknames(String [] names){

       names = new String[] {"John", "Doe", "Brian", "Loveth", "Chris"};

       for(String n: names){

           System.out.print(n + " ");

       }

    }

}

==================================================

John Doe Brian Loveth Chris

NB: To run this program, copy the complete code, paste in an IDE or editor and save as Tester.java