Data Analysis The Iris Plants Database contains 3 classes of 50 instances each, where each class refers to a type of Iris plant. Five attributes/features were collected for each plant instance. 1. Implement an algorithm to read in the Iris dataset.

Answer:

#include<stdio.h>

#include<stdbool.h>

bool isEven(int x);

main()

{

int n;

bool v;

printf("Enter an integer: \n");

scanf("%d", &n);

v = isEven(n);

if(v==true)

 printf("\n The integer is even");

else

 printf("\n The integer is odd");

}

bool isEven(int x)

{

if(x%2==0)

 return true;

else

 return false;

}

Explanation:

if the integer is divided by 2 then the integer is even

else the integer is odd.

Answer:

b. the same data type

Explanation:

Any number of variables can be declared in a statement as long as the variables have the same data type. For example:

1) int a,b,c,d,e;

Here each of the declared variables a,b,c,d,e have the type int.

2) char p,q,r,s,t,u,v,w;

In this case variables p to w all have the type char.

3) float x,y,z;

x,y and z are all of type float.

Answer: Option - 2) Light

In fiber optic cable, the signal source is light wave.

Explanation: In fiber optic cable the data transmission send information through electronic signal into light wave. When the input data is given in the form of electronic signal, then it gets converted into light signal with the help of light source. As fiber optic is a medium for carrying information in the form of light from one medium to another. Fiber optics are beneficial as it is used in long distance data transmission.

Answer:

Future of Reliability and Security in Software Engineering:

Software reliability refers to a system which is failure-free operations and it is related to many aspects of software and testing process. It is very important as it is directly affects the system reliability. Testing is a best method to measure software reliability. Software can be accessed using reliability information.

As, software reliability, security are tightly coupled with each other and software security problem becoming more severe with the development of the internet. Many software application have security measurement against malicious attacks, so the future of security testing improves the software flaws.

Answer:

#include <iostream>

using namespace std;

int main()

{

  int arr[]={3,-9,9,33,-4,-5, 100,4,-23};

  int pos;

  int n=sizeof(arr)/sizeof(arr[0]);

  for(int i=0;i<n;i++){

      if(arr[i]>=0){

          pos++;

      }

  }

  cout<<"Number of positive integers is "<<pos<<endl;

  return 0;

}

Explanation:

create the main function in the c++ programming and declare the array with the element. Then, store the size of array by using the formula:

int n=sizeof(arr)/sizeof(arr[0]);

after that, take a for loop for traversing the array and then check condition for positive element using if statement,

condition is array element greater than or equal to zero.

if condition true then increment the count by 1.

this process happen until the condition true

and finally print the count.

Answer:

Test management most commonly refers to the activity of managing the computer software testing process. A test management tool is software used to manage tests (automated or manual) that have been previously specified by a test procedure. It is often associated with automation software.

The Configuration Management is a process of establishing and maintaining a product’s performance, functional and physical attributes with its requirements, design, and functionalities through its life.

In Configuration Management we making sure that these items are managed carefully in entire project & product life cycle. It allows Software Tester to manage their testware and test outputs using same configuration management mechanisms.

Answer:

D.

Explanation:

a. is about delivering material only to who is entitled to it

b. is about encrypting and decrypting with two different keys

c. is about proving the integrity of a document (that it hasn't been changed).

d. is a cryptographic hash in combination with private key, so that provides both document integrity and non-repudiation

Answer:

TRUE

Explanation:

A parameter is a variable in a method definition and an argument is the value to this variable that gets passed to the function.

public void CalculateAdd(int i, int j)

{

    Console.WriteLine(i+j);

}

In the above defined  function, i and j are parameters .

We pass arguments when the function is called.

CalculateAdd(10,20);

10 and 20 are arguments which are passed to the above function to calculate addition operation.

If a function has no parameters, then it is legal to have no arguments.

For example,

public void PrintMessage()

{

   Console.WriteLine("Hello");

}

The above function has no parameters. So, you can call the function without passing any arguments to it as shown below.

PrintMessage();

Answer:

Peer-to-peer networking is a distributed application where computers are get connected to each other and share resources. Peer-to-peer connection can also be an ad-hoc connection as couple of computers connected and sharing files and information with each other. The main advantages of this network is that it is less expensive and easy to set up. Wireless and wired both networks can be configured as peer-to-peer networking.

Answer: Control Break

Answer:

The command to create a compressed archive (archive1.tar.gz) is

[tex]tar\,\,-czvf\,\,archive1.tar.gz\,\,test1\,\,test2\,\,test3[/tex]

Explanation:

The explanation for the above command is

The general command to create a compressed archive is

tar -czvf name-of-archive.tar.gz /path/to/directory-or-files

Here, the terms are as follows:

-c : Creates an archive

-z : Compress the archive with gzip.

-v : This is known as verbose. This is an optional command and it displays the progress on terminal command. Without this the progress is not displayed on terminal command.

-f : Allows to specify the file name of the archive.

Here, if we want to archive multiple files, we provide the command the names of multiple files or directories of the files also can be used.

So, the command [tex]tar\,\,-czvf\,\,archive1.tar.gz\,\,test1\,\,test2\,\,test3[/tex]

creates a compressed archive  - archive1.tar.gz of files test1, test2 and test3.

To create a compressed archive file named archive1.tar.gz containing the files test1, test2, and test3, use the command: tar -cvzf archive1.tar.gz test1 test2 test3.

This command creates and gzips the tarball with verbose output. For This Question use the following command:

tar -cvzf archive1.tar.gz test1 test2 test3

In this command:

Answer:

TRUE

Explanation:

The while loop is used to run the block of statement again and again until condition is TRUE. if condition false program terminate the loop and execute the next of while statement.

syntax:

initialize;

while(condition)

{

 statement;

  increment/decrement;

)

when condition is TRUE, the block of statement execute again and again.

A while loop in programming has a condition and contents (block of statements). As long as the condition holds true, the loop keeps repeating the contents. The loop stops when the condition turns false.

The while loop in programming has two key components. These are a condition that the system checks before each loop, and some content (statements or blocks of statements) that get executed as long as the condition holds true. The sentence would be completed as 'repeated as long as the expression is true' because the while loop continues until the condition becomes false.

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Answer:

A. (x < 15 || x > 2)

Explanation:

The operator '||' is used for OR operation. it is used in between the conditions and give the result as Boolean (TRUE or FALSE).

There are four possible result:

First condition TRUE, second condition TRUE then result will be TRUE.

First condition TRUE, second condition FALSE then result will be TRUE.

First condition FALSE, second condition TRUE then result will be TRUE.

First condition FALSE, second condition FALSE then result will be FALSE.

In the question:

Option A: (x < 15 || x > 2)

x will be in between the 2 and 15, if it less than 15 and greater than 2. So, the expression follow the condition.

Option B: (2 2) && (x<=15)

it not the correct way to write the condition,  (2 2) is not allowed.

Option D:  (22)

it also not true. it show the value 22.

Therefore, the correct option is A.

Answer:

a.invalid

b.invalid

c.invalid

d.invalid

Explanation:

For option a return type of the function is not specified and there is no space between int and b.

For option b there is no space between int and ThisOne and char and x.If there is space then this is valid.

For option c data type of variable b is not specified.

For option d if YetAnother function is without arguments then parenthesis should be there parenthesis are missing in this function heading.

Answer:

Inserted

Explanation:

Triggers can be created in operational systems to keep track of recently inserted records.

Answer:

The number of unique combinations stored in the register totally dependent upon the number of bits the register can hold.

Explanation:

Suppose if the register is 2-bit.Then it can have (2²) 4 unique combinations of the bits and those combinations are 00,01,10,11.For a 3 bit register there are (2³) or 8 unique combinations those are 000,001,010,011,100,101,110,111.So for a n-bit register there can be 2ⁿ unique combinations there.

Answer:

Create an integer array which holds five integers

Explanation:

I have written a simple program using c# as a programming language.

Here's  the  program:

using System;

public class Test

{

   public static void Main()

   {

       int[] numbers = new int[5];

       Console.WriteLine("enter 5 numbers");

       for (int i=0; i<=4; i++)

       {

          numbers[i]= Convert.ToInt32(Console.ReadLine());

       }

       foreach(int k in numbers)

       {

           Console.WriteLine(k+ "\n");

       }

       Console.WriteLine("----------------------------");

       Console.WriteLine("In reverse");  

       for(int j=4; j>=0; j--)

       {

           Console.WriteLine(numbers[j] + "\n");

       }

       Console.ReadLine();

   }      

}

Explanation of Program:

I have created an array named "numbers"  and assigned 5 as it's fixed size.

I prompted the user to enter numbers up to 5. I read those input numbers using Console.ReadLine() and converted to integers as return type of  Console.ReadLine() is string. I have stored all inputs from user into an array  while reading as below:

    numbers[i]= Convert.ToInt32(Console.ReadLine());

Next step is to print them. We can do it easily using foreach loop where it pulls out elements from an array until it reaches  end of an array and print them on console.

If I need to print them from first to last, the condition is,

    for (int i=0; i<=4; i++)  

as it needs to start from first element

If I need to print them from last to first, the condition is,

    or(int j=4; j>=0; j--)  

as it needs to start from last element

The application that can hold five integers in an array and display the integer from first to last and last to first is as follows;

integers = [15, 17, 8, 10, 6]

print(integers)

x = integers[::-1]

print(x)

The code is written in python.

learn more on array here:https://brainly.com/question/19587167

Answer:

Total number of characters in "short text" is 10.

Total number of distinct characters is 8.

Explanation:

List of characters in "short text":

s,h,o,r,t, ,t,e,x,t - 10

Set of distinct characters is:

s,h,o,r,t, ,e,x - 8

The length can be determined programmatically in Java using String.length() api.To determine distinct characters, individual characters can be added to a Set and then the set size can be computed.

Answer:

I would go for a width of 8.27 inches

Explanation:

The width of your PDF file depends on the project you are working on as well as your use case. Putting that aside, you are always better off making the dimensions of your PDF the same as the dimensions of A4 printing paper, which is 8.27 inches or 21 centimeters (2480 pixels). This is because A4 is the most common printing paper used and will make organization and printing less of a hassle.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

Answer: d) Avoid a neutral or buffered opening

Explanation: A newsletter is a piece of a report that is having knowledge about the activities of the business ,organizations,their members and owner etc.When the news letter contains contains a disappointing news it should not not have a buffered or neutral opening .The start of the news letter should not be impartial or prejudiced to make bad opening. Therefore, option(d)is the correct option.

Answer:

The image of the life cycle of program is attached please refer it.

1. Requirement:- When there is a problem the there is need of program.

2. Analysis:- In this phase all the requirements are collected.

3. Design:- It is an important phase in the program life cycle .The design of problem is generated.

4. Coding:- In this phase the program is coded as per the design.

5. Testing:- In this phase the testing of the program is done to make sure that the program is working properly.

6. Deployment:- In this phase the program comes into the use.

Answer:

True.

Explanation:

A method can not be made final until whole class is madefinal.

Answer:

a.

++score = score + 1

Explanation:

First you have to understand the increment operator;

There are three possible ways to increment the value of variable by 1.

1.  post increment

syntax:

name++

it using in expression first then increase the value by 1.

2. Pre increment

syntax:

++name

it increase the value by 1 before it using in expression.

3. simple method

name = name +1

In the question,

option 1: ++score = score + 1

it increase the value of score by 2 because their are two increment is used first for (score + 1) and second ++score.

Therefore, the correct option is a.

Answer:

The prefix form of increment operator is ++a, for the variable a.

The postfix form of increment operator is a++, for the variable a.

Explanation:

Let a = 6.

++a + 5 = 12.

but

a++ + 5 =11.

yes

Explanation:

isn't really noted but if the sequence is in the given order the ("3at4") could be expressed in a ('0' to '9' )format

Answer:

Network layer

Explanation:

Network layer is used when devices from different network involves communication.So,network layer is not required if devices communicate in a same network.

The network layer is concerned with the selection of network paths.

The network layer is the layer in OSI Model. This layer provides data routing paths for communication. Data is transferred on nodes via packets in an order controlled by the network layer.

This layer includes hardware devices such as bridges, firewalls ,routers and switches, but it effectively generates a logical image of the most effective communication path and implements it with a physical medium.

Answer:

A.) True

Explanation:

Inserting a new value in the middle of a singly lnked list requires changing the pinter of the list node that follows the new node.

Answer:  b. actuator

Explanation:

We know that a RW head ( or also known as read/write head) is a component of device which is usually appeared on the hard drive which is used to read and write data by the hard drive's disk . When data required to be read or write, the read/write arm is regulated by actuator.

[An actuator is a part of a device that is mainly responsible for moving and controlling a mechanism or system.]

Hence, All the read/write heads a hard disk are controlled by an actuator .

Answer:

if workExperience>=2 or hasCollegeDegree==True:

   print("Application accepted")

Explanation:

Note: This code was written in python but you can extend the same concept to any programing language using if, comparison operation, boolean operators and print function.

Answer:

F

Explanation:

they are initialized to 0 by default.static variables are shared variables