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The correct answer is a. To configure a user profile as mandatory, you must make it read-only by changing the name of the Ntuser.dat file to Ntuser.man.

Redundancy is provided by establishing multiple VPN servers. If one VPN server fails, client sessions are disconnected. However, clients can connect again by using a differ ent VPN server. To reduce the necessity to configure multiple connectoids (one for each VPN server), use Network Load Balancing. However, don t confuse redundancy with load balancing. Load balancing can be provided via round-robin Domain Name System (DNS) or clustering. Round-robin DNS is configured by entering several weighted host records that use the same DNS name but several IP addresses. This provides load balancing because each request for name resolution will provide one of many IP addresses and thus be directed to a different computer. However, DNS has no way of knowing when a spe cific VPN server is not available. The IP address for a server that is not available will be provided just as often as one that is. Network load balancing, a Microsoft clustering technology that spreads requests for a single IP address among several Microsoft Windows servers, can also provide load bal ancing in addition to scalability and redundancy. If a VPN server fails, client sessions will also fail and the user will be prompted to log on again. The user s new session will be managed by one of the other VPN servers in the cluster. Figure 7-7 shows Microsoft network load balancing.

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* * @author <a href="mailto:andrew.rubinger@jboss.org">ALR</a> * @version $Revision: $ */ @Stateless @Local(BlackjackGameLocalBusiness.class) @LocalBinding(jndiBinding = BlackjackGameLocalBusiness.JNDI_NAME) @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) // Each game must be in a new Tx, suspending the existing enclosing Tx if necessary; // At the class-level, this annotation now applied to all methods public class BlackjackGameBean implements BlackjackGameLocalBusiness { //--------------------------------------------------------------------------|| // Class Members -----------------------------------------------------------|| //--------------------------------------------------------------------------|| /** * Zero value used for comparison */ private static final BigDecimal ZERO = new BigDecimal(0); //--------------------------------------------------------------------------|| // Instance Members --------------------------------------------------------|| //--------------------------------------------------------------------------|| /** * Hook to JPA */ @PersistenceContext private EntityManager em; /** * The bank service which will handle account transfers * during win/lose */ @EJB private BankLocalBusiness bank; //--------------------------------------------------------------------------|| // Required Implementations ------------------------------------------------|| //--------------------------------------------------------------------------|| /** * @see org.jboss.ejb3.examples.ch17.transactions.api.BlackjackGameLocal Business#bet(long, java.math.BigDecimal) */ @Override public boolean bet(final long userId, final BigDecimal amount) throws Illegal ArgumentException, InsufficientBalanceException { // Precondition checks if (userId < 0) {

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Rename a user account if you want a new user to have all of the properties of a former user, including permissions, desktop settings, and group membership. The advantage of renaming an account is that you do not have to rebuild all of the properties as you do for a new user account.

Disable a user account when a user does not need an account for an extended period, but will need it again. The advantage of disabling a user account is that when the user returns, you can enable the user account so that the user can log on to the network again without having to rebuild a new account.

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throw new IllegalArgumentException("userId must be valid (>0)"); } if (amount == null) { throw new IllegalArgumentException("amount must be specified"); } if (amount.compareTo(ZERO) < 0) { throw new IllegalArgumentException("amount must be greater than 0"); } // Check the balance of the user account final Account userAccount = em.find(User.class, new Long(userId)).get Account(); final BigDecimal currentBalanceUserAccount = userAccount.getBalance(); if (amount.compareTo(currentBalanceUserAccount) > 0) { throw new InsufficientBalanceException("Cannot place bet of " + amount + " when the user account has only " + currentBalanceUserAccount); } // Fake the game logic and just determine if the user wins final boolean win = Math.random() > 0.5; // Get the Poker Service account (assume we always have enough to back our bet, these are just tests :)) final Account blackjackServiceAccount = em.find(Account.class, Blackjack ServiceConstants.ACCOUNT_BLACKJACKGAME_ID); // Transfer the money based upon the outcome if (win) { bank.transfer(blackjackServiceAccount, userAccount, amount); } else { bank.transfer(userAccount, blackjackServiceAccount, amount); } // Return the outcome return win;

3. How is a disabled user account designated in the Active Directory Users And Com puters console