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Aliun [14]
3 years ago
7

A network technician configures a firewall’s ACL to allow outgoing traffic for several popular services such as email and web br

owsing. However, after the firewall’s deployment, users are still unable to retrieve their emails. Which of the following would BEST resolve this issue?A. Allow the firewall to accept inbound traffic to ports 25, 67, 179, and 3389B. Allow the firewall to accept inbound traffic to ports 80, 110, 143, and 443C. Set the firewall to operate in transparent modeD. Allow the firewall to accept inbound traffic to ports 21, 53, 69, and 123
Computers and Technology
1 answer:
Cerrena [4.2K]3 years ago
3 0

Answer: (B) Allow the firewall to accept inbound traffic to ports 80, 110, 143, and 443

Explanation:

Port 80 is used by HTTP, 110 by pop3 to retrieve emails from web servers, 143 by imap for internet messaging and 443 is used for TCP for websites using SSL. So if the firewall is allowed to accept inbound traffic to these ports 80,110,143 and 443 then it would be possible to retrieve emails.

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Write a Java program that generates GUI (Graphical User Interface). Your program should provide labels and textfields to a user
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Answer:

import javafx.application.Application;

import javafx.stage.Stage;

import javafx.scene.Scene;

import javafx.scene.control.Tab;

import javafx.scene.control.TabPane;

import javafx.scene.layout.StackPane;

import java.util.ArrayList;

public class Assignment6 extends Application {

private TabPane tabPane;

private CreatePane createPane;

private SelectPane selectPane;

private ArrayList<Club> clubList;

public void start(Stage stage) {

StackPane root = new StackPane();

//clubList to be used in both createPane & selectPane

clubList = new ArrayList<Club>();

selectPane = new SelectPane(clubList);

createPane = new CreatePane(clubList, selectPane);

tabPane = new TabPane();

Tab tab1 = new Tab();

tab1.setText("Club Creation");

tab1.setContent(createPane);

Tab tab2 = new Tab();

tab2.setText("Club Selection");

tab2.setContent(selectPane);

tabPane.getSelectionModel().select(0);

tabPane.getTabs().addAll(tab1, tab2);

root.getChildren().add(tabPane);

Scene scene = new Scene(root, 900, 400);

stage.setTitle("Club Selection Apps");

stage.setScene(scene);

stage.show();

}

public static void main(String[] args)

{

launch(args);

}

}

import java.util.ArrayList;

import javafx.scene.layout.HBox;

import javafx.event.ActionEvent; //**Need to import

import javafx.event.EventHandler; //**Need to import

public class CreatePane extends HBox {

ArrayList<Club> clubList;

private SelectPane selectPane;

//constructor

public CreatePane(ArrayList<Club> list, SelectPane sePane) {

this.clubList = list;

this.selectPane = sePane;

}

//using the toString method of the Club class.

//It also does error checking in case any of the textfields are empty,

//or a non-numeric value was entered for its number of members

private class ButtonHandler implements EventHandler<ActionEvent> {

//Override the abstact method handle()

public void handle(ActionEvent event) {

//declare any necessary local variables here

//---

//when a text field is empty and the button is pushed

//if ( //---- )

//{

//handle the case here

//}

//else //for all other cases

//{

//when a non-numeric value was entered for its number of

members

//and the button is pushed

//you will need to use try & catch block to catch

//the NumberFormatException

//When a club of an existing club name in the list

//was attempted to be added, do not add it to the list

//and display a message "Club not added - duplicate"

//at the end, don't forget to update the new arrayList

//information on the SelectPanel

//}

} //end of handle() method

} //end of ButtonHandler class

}

import javafx.scene.control.Label;

import javafx.scene.control.CheckBox;

import javafx.scene.layout.*;

import javafx.event.ActionEvent; //**Need to import

import javafx.event.EventHandler; //**Need to import

import java.util.ArrayList;

import javafx.collections.ObservableList;

import javafx.scene.Node;

//import all other necessary javafx classes here

public class SelectPane extends BorderPane {

private ArrayList<Club> clubList;

//constructor

public SelectPane(ArrayList<Club> list) {

//initialize instance variables

this.clubList = list;

//set up the layout

//create an empty pane where you can add check boxes later

//SelectPane is a BorderPane - add the components here

} //end of constructor

//This method uses the newly added parameter Club object

//to create a CheckBox and add it to a pane created in the constructor

//Such check box needs to be linked to its handler class

public void updateClubList(Club newClub)

{

//-------

}

//create a SelectionHandler class

private class SelectionHandler implements EventHandler<ActionEvent> {

//Override the abstact method handle()

public void handle(ActionEvent event){

//When any radio button is selected or unselected

//the total number of members of selected clubs should be updated

//and displayed using a label.

}

} //end of SelectHandler class

} //end of SelectPane class

public class Club {

private String clubName;

private int numberOfMembers;

private String university;

//Constructor to initialize all member variables

public Club() {

clubName = "?";

university = "?";

numberOfMembers = 0;

}

//Accessor method for club name

public String getClubName() {

return clubName;

}

//Accessor method for university

public String getUniversity() {

return university;

}

//Accessor method for number of members

public int getNumberOfMembers() {

return numberOfMembers;

}

//mutator/modifider method for club name

public void setClubName(String someClubName) {

clubName = someClubName;

}

//mutator/modifider method for university

public void setUniversity(String someUniversity) {

university = someUniversity;

}

//mutator/modifider method for number of members

public void setNumberOfMembers(int someNumber) {

numberOfMembers = someNumber;

}

//toString() method returns a string containg its name, number of members, and

university

public String toString() {

String result = "\nClub Name:\t\t" + clubName

+ "\nNumber Of Members:\t" + numberOfMembers

+ "\nUniversity:\t\t" + university

+ "\n\n";

return result;

}

}

Explanation:

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foud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsufoud6gdjyrxyutwrhgcghkiyiyofjxgxhdttenhdjgxjxjgztujxjxufudtduyyd6rdgtsu

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Explanation:

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