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The next update of the feedback application will take the region and rating data collected from each user (and stored using the new persistent Record class) and produce a pie chart and a bar graph from it. The first part of the new Feedback class is shown in listing 7.7. The code continues in listings 7.8 and 7.9.

2. You are the network administrator for your organization. Users report that they are unable to use the Internet and are receiving a DNS error message. You investigate and discover that the DNS server used to resolve Internet names has failed. What proactive measure could you have taken to ensure that you were aware of the DNS server failure as soon as possible

9. To restore a previous version of the file, right-click the folder in which it is saved in the left Windows Explorer pane, as shown in Figure 12-33, and click Restore Previous Versions.

You could have configured ISA Server to monitor connectivity to the DNS server and then set up an alert to trigger an e-mail in the event of a server failure.

3. You have deployed ISA Server and configured it to allow user access to the Internet. You have deployed the Firewall client to some of the client workstations in your organization. You now need to monitor the number of active Firewall client sessions on ISA Server. What performance objects should you monitor on ISA Server a. ISA Server Firewall Engine b. ISA Server Cache c. ISA Server Firewall Service d. ISA Server Web Proxy

12

Listing 7.7 Feedback.fx (version 2, part 1)

C is correct. The Firewall Service performance objects monitor the Firewall client connections. The Firewall Engine objects monitor all client connections, including SecureNAT and Web Proxy client connections, whereas the Web Proxy counters monitor only the Web Proxy client connections. The ISA Server Cache counters monitor the efficiency of the Web Proxy cache on the server.

Figure 12-33

11-63

4. You are the ISA Server administrator for your organization. Your manager wants information about the trends in Web usage provided to him on a monthly basis. What can you do to provide this

10. Select a previous version of the folder that is likely to contain the file you want to restore, as shown in Figure 12-34, and then click Open.

package jfxia.chapter7; import import import import import import import import import import import import import import import import import import import import import javafx.scene.Group; javafx.scene.Node; javafx.scene.Scene; javafx.scene.chart.BarChart; javafx.scene.chart.BarChart3D; javafx.scene.chart.PieChart; javafx.scene.chart.PieChart3D; javafx.scene.chart.part.CategoryAxis; javafx.scene.chart.part.NumberAxis; javafx.scene.control.Button; javafx.scene.control.Label; javafx.scene.control.RadioButton; javafx.scene.control.Slider; javafx.scene.control.TextBox; javafx.scene.control.ToggleGroup; javafx.scene.layout.Panel; javafx.scene.layout.Tile; javafx.scene.layout.VBox; javafx.scene.paint.Color; javafx.scene.shape.Rectangle; javafx.stage.Alert;

Page 11-27

1. You are the network administrator at the branch office of your company. ISA Server 2004 is installed as your Internet-edge firewall. You have configured the alerts on the ISA Server computer to send an e-mail to your e-mail account at an Internet service provider (ISP). What else must you do to receive the e-mail notifications

11. As shown in Figure 12-35, the previous version of the file you want to restore should be in the previous version of the folder. Right-click the file, and copy it.

Because your Exchange Server computer is on the External network, you must create a firewall access rule that allows the Local Host network access to the External network using SMTP .

Figure 12-35

import javafx.stage.Stage; import javafx.util.Sequences; var recordStore = Record.load(); def record:Record = Record {}; insert record into recordStore; def def var var winW:Number = 550; winH:Number = 350; showCharts:Boolean = false; showPie:Boolean = false;