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8. After configuring the other notebook computers, all but one can connect to the Internet successfully. However, one of the computers does not connect. What two methods could you use to determine the IP address assigned to that computer s wireless network connection

public class HibernateSessionRequestFilter implements Filter { private SessionFactory sf; private static Log log = ...; public void doFilter(ServletRequest request,

You could use the ipconfig command at the command prompt or you could right-click that connection in the Network Connections window and then click Status. The Support tab of the connection s Status dialog box indicates the IP address.

1. 2. 3.

9. You determine that the computer s wireless connection has been assigned the IP address 169.254.003.322, which indicates that the computer has assigned itself an IP address rather than obtaining an address from the ICS host computer. In what two ways could you force the computer to attempt to obtain an IP address again

ServletResponse response, FilterChain chain) throws IOException, ServletException { try { // Starting a database transaction sf.getCurrentSession().beginTransaction(); // Call the next filter (continue request processing) chain.doFilter(request, response); // Commit the database transaction sf.getCurrentSession().getTransaction().commit(); } catch (Throwable ex) { // Rollback only try { if (sf.getCurrentSession().getTransaction().isActive()) sf.getCurrentSession().getTransaction().rollback(); } catch (Throwable rbEx) { log.error("Could not rollback after exception!", rbEx); rbEx.printStackTrace(); } // Let others handle it... throw new ServletException(ex); } } public void init(FilterConfig filterConfig) throws ServletException { sf = HibernateUtil.getSessionFactory(); } public void destroy() {} }

You could use the ipconfig /renew command at the command prompt or you could right-click the connection in the Network Connections window, and then click Repair.

Questions and Answers 15-69

This filter acts as an interceptor for servlet requests. It runs every time a request hits the server and must be processed. It needs the SessionFactory on startup, and it gets it from the HibernateUtil helper class. When the request arrives, you start a database transaction and open a new persistence context. After the controller has executed and the view has been rendered, you commit the database transaction. Thanks to Hibernate s auomatic Session binding and propagation, this is also automatically the scope of the persistence context. Exception handling has also been centralized and encapsulated in this interceptor. It s up to you what exception you d like to catch for a rollback of the database transaction; Throwable is the catch-all variation, which means that even thrown Errors, not only Exceptions and RuntimeExceptions, trigger a rollback. Note that the actual rollback can also throw an error or exception always make

Page 15-62

Most likely, it is Windows Firewall that is interfering because it drops all unsolicited traffic by default unless you create an exception.

sure (for example, by printing out the stack trace) that this secondary exception doesn t hide or swallow the original problem that led to the rollback. The controller code is now free from transaction and exception handling and already looks much better:

Although it would be tempting to disable Windows Firewall for the demonstration, a better solution is to create an exception on the target computer that allows the custom application to connect. This solution has the added advantage of showing Greta s customers how the application can work even when Windows Firewall is enabled. Because the application is not installed on the target computer, you must create an exception on the computer that allows the traffic on the particular port used by the application. To do this, you must know the port or ports that the application uses.

Exam Objectives in this :

public void execute() { // Get values from request Session session = HibernateUtil.getSessionFactory().getCurrentSession(); // // // // // // } Load requested Item Check auction still valid Check amount of Bid Add new Bid to Item Place new Bid in scope for next page Forward to success page

Configure, manage, and troubleshoot a security configuration and local security policy. Configure, manage, and troubleshoot local user and group accounts.

Configure, manage, and troubleshoot auditing. Configure, manage, and troubleshoot account policy. Configure, manage, and troubleshoot user and group rights.

B. Incorrect: MAP Toolkit is available free of charge, whereas SCCM is a retail product. c. Incorrect: MAP Toolkit is capable of using the free SQL Server Express product from