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drek231 [11]
3 years ago
5

Paul is a chemical engineer working with large storage tanks of chemicals. Working from home using a program on his computer, he

can control valves on the tank piping. What sort of network would he be using to do this? Justify your answer.
Computers and Technology
1 answer:
gregori [183]3 years ago
7 0
A pressure regulator application on his computer or a station nearbye
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Write code to take a String input from the user, then print the first and last letters of the string on one line. Sample run: En
Ainat [17]
<h2>Answer:</h2>

//import the Scanner class to allow for user input

import java.util.Scanner;

//Begin class definition

public class FirstAndLast{

   //Begin the main method

    public static void main(String []args){

       

       

       //****create an object of the Scanner class.

       //Call the object 'input' to receive user's input

       //from the console.

       Scanner input = new Scanner(System.in);

       

       //****create a prompt to tell the user what to do.

       System.out.println("Enter the string");

       

       //****receive the user's input

       //And store it in a String variable called 'str'

       String str =  input.next();

       

       //****get and print the first character.

       //substring(0, 1) - means get all the characters starting

       //from the lower bound (index 0) up to, but not including the upper

       //bound(index 1).

       //That technically means the first character.

       System.out.print(str.substring(0,1));

       

       //****get and print the last character

       //1. str.length() will return the number of character in the string 'str'.

       //This is also the length of the string

       //2. substring(str.length() - 1) - means get all the characters starting

       // from index that is one less than the length of the string to the last

       // index (since an upper bound is not specified).

       // This technically means the last character.

       System.out.print(str.substring(str.length()-1));

       

       

       

    }  // end of main method

   

} //end of class definition

<h2>Explanation:</h2>

The code has been written in Java and it contains comments explaining important parts of the code. Kindly go through the comments.

The source code and a sample output have also been attached to this response.

To run this program, copy the code in the source code inside a Java IDE or editor and save it as FirstAndLast.java

Download java
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> java </span>
4c53f66d970acf88b251b2cf41bcdaf6.png
3 0
2 years ago
. SQL is a(n) _____ language.
Blababa [14]

Answer: Fourth- generation language

Explanation:Structured Query Language (SQL) is the language that is in the form of database structure which helps in the manipulation of the data and management as well.

SQL is considered as the fourth generation language because it is used for the accessing of the data from the database.It is also known for the advancement in the third generation language and thus also improving the language interface with users.

7 0
3 years ago
In word, the ____ presents the most accurate view of how your document will look when printed, displaying the entire page on scr
makkiz [27]
<span>When using Microsoft Word, the "Print Preview" presents the most accurate view of how the document will look when it is printed. When using "Print Preview" the entire page is displayed on screen, making it easier to see what adjustments should be made to the page layout, such as spacing or text size.</span>
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3 years ago
For those that play pc games how do you go outside in The Sims 2?
yanalaym [24]

Answer:

My sister plays a lot of the sims 4 but I do recall she also played the Sims 2 so when she would go outside she would command them to do that.

Explanation:

If this does not work I would suggest you get a video that can explain it better than I possibly would? Considering the Sims 2 was made a while back you would maybe want somebody with a little more experience.

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2 years ago
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Your organization has hired a penetration tester to validate the security of your environment. The penetration tester needs to d
yulyashka [42]

Answer:

Port scanner

Explanation:

The penetration tester would most likely use a port scanner. A port scanner can be explained to be an application that is made to check a server or host for ports that are open. This application can also be used by administrators to check their security networks so as to know those network services that are running on a host and also to know existing vulnerabilities. Attackers also use this to exploit victims.

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