Answer Explanations

A1:	Answer B is correct. Although it is accessed through the Active Directory Users and Computers console, the correct utility you will use to create Exchange mailboxes is the Exchange Task Wizard, thus answer A is incorrect. Answers C and D are incorrect; you cannot create Exchange mailboxes in the Exchange System Manager or in the Computer Management console. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A2:	Answer A is correct. Exchange Server 2003 does not support the instant messaging and Chat services. To keep these services functioning, you must keep at least one Exchange 2000 Server computer functioning. Answer B is incorrect; upgrading the hosting platform to Windows Server 2003 causes Exchange 2000 Server to fail. Answer C is incorrect; upgrading both of the computers hosting Exchange 2000 Server to Windows Server 2003 causes both Exchange 2000 servers to fail. Answer D is incorrect; upgrading both Exchange servers to Exchange Server 2003 removes the instant messaging and Chat services. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A3:	Answers A and C are correct. The default routing protocol used in native mode is SMTP and you are able to move Exchange Server 2003 computers from one routing group to another. Answer B is incorrect; in native mode, you can move mailboxes between administrative groups. Answer D is incorrect; in native mode, bridgehead servers use 8-bit MIME. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A4:	Answer A is correct. If the users restart Outlook, they will be able to use the new global catalog server. Answer B is incorrect; although this would work, it is unnecessary. Answer C is incorrect; there is no need to reboot the Exchange Server 2003 computers. Answer D is incorrect; there is no need to reboot all the domain controllers. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A5:	Answer D is correct. Mailboxes are AD objects and, hence, their access is recorded when the Audit Directory Service Access policy is enabled. This record is kept on a domain controller. Answer A is incorrect; Audit System Events logs activities such as shutdown and restart. Answer B is incorrect; accessing a mailbox is not the use of a privilege, whereas taking control of a file is. Answer C is incorrect. Although auditing object access does record mailbox access, it writes to the Exchange server's security log rather than the log on the DC. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A6:	Answer C is correct. Monitoring of queue growth, particularly of SMTP queue growth, can be quite useful in keeping a watchful eye out for abnormal messaging situations. For example, suppose that you've somehow been exposed as an open SMTP relay. You might notice a large increase in your queue growth without a corresponding increase in the number of messages actually being delivered due to spam being delivered through your open relay. Another situation you might encounter is a script-based email worm that replicates itself through email messages, which might also create a large increase in your queue growth. Lastly, monitoring of the queue growth is helpful in situations in which outgoing messages cannot be transported out of the Exchange organization possibly indicating a problem with your Internet connectivity. None of the other listed resources are indicative of a problem sending email to Internet recipients, thus answers A, B, D, and E are incorrect. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A7:	Answers B and F are correct. Offline backups require that the databases first be dismounted, making them unavailable to users, and they do not check files for corruption. However, the question asked about online backups. Answers A, C, and D are incorrect; the online backup process backs up the .edb, .stm, and .log files that make up the database store. Answer E is incorrect; each file is checked for corruption at the file level by verifying the checksums on each 4KB page in the database. A checksum failure prevents the backup from proceeding as Exchange does not allow you to back up data that is corrupt. If online backups are failing due to checksum errors, an offline backup can still be performed to back up the data. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A8:	Answer A is correct. Routing group connector costs work the same as route metric in IP routing. Cost values range from a low value of 1 to a high value of 100, with the lower values being the more preferred routes out of the routing group. When a client needs to connect to a remote routing group to access a public folder replica, the lowest cost connection is used assuming that the routing group connectors on each end of the connection allow public folder referrals. Because the routing group connector cost between routing groups A and B is the lowest, the routing group connectors between routing group A and the other three routing groups is not used to locate the replica unless the client is unsuccessful in locating it through routing group B; thus, answers B, C, and D are incorrect. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A9:	Answer D is correct. There are seven total instances of the Recipient Update Service in this organization. Answers A, B, and C are incorrect; there is one Recipient Update Service (EnterpriseConfiguration) and a total of six Recipient Update Service (ActiveDirectoryDomain) instances, one for each domain. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A10:	Answer C is correct. To allow these users to be listed in the GAL, but not to have an Exchange mailbox, you need to mail-enable them. These users will then use an external mail service, such as one provided by an ISP, to send and receive mail. Answer A is incorrect; because you can simply mail-enable these user accounts, you have no need to create new contact objects to represent these users. Answer B is incorrect; mailbox-enabling these users creates an Exchange mailbox, which you do not want to do. Answer D is incorrect; creating mailboxes for these users and then denying them access to the mailbox is more work than you need do and also violates the requirement that no mailboxes be created. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A11:	Answers A and E are correct. You must install the Lotus Notes R5 client on the Exchange Server 2003 computer to have the connector work. Similarly, you must ensure that the appropriate services (Exchange Connectivity Controller and Exchange connector for Lotus Notes services) are functioning. Answer B is incorrect; you do not need to install Outlook for the connector to function. Answer C is incorrect; you do not need to create a special Notes mailbox on the Exchange server. Answer D is incorrect; you do not need to install the ADC. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A12:	Answer D is correct. The phrase "minimum administrative effort" is shorthand on the exam for "with the least amount of effort on the part of the administrators." ForestPrep only needs to be run in the root domain of the first forest (where the Schema Master is likely located). DomainPrep needs to be run in the root domain as well as in the domain in which users will be utilizing Exchange Server 2003. Answers A, B, and C are incorrect. There is no need to run ForestPrep or DomainPrep in any domains in the second forest. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A13:	Answer A is correct. The Telnet utility can connect to port 25, which allows you to check that the SMTP Service on the remote server is functioning and accessible. Answer B is incorrect. Although the very first versions of email in the 1970s used FTP to transfer data, FTP cannot be used as a diagnostic tool to check that port 25 is open on a remote SMTP server. Answer C is incorrect; the ping utility cannot be used to check the status of remote ports. Answer D is incorrect; the pathping utility cannot be used to check the status of remote ports. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A14:	Answers A and B are correct. To access Exchange Server 2003 OWA with all features, Internet Explorer 5.5 is required. To receive encrypted email and to digitally sign outgoing email, each user requires their personal certificate to be installed on the laptop. Answer C is incorrect; the RPC over HTTP Service is not required on the laptop. Answer D is incorrect; there is no need to use a VPN client because OWA is located on the screened subnet and is available to the Internet. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A15:	Answer C is correct. At the Medium level, events with a logging level of 3 or lower are logged. The logging levels are configured by the developers of the application and cannot be modified after the fact. Answer A is incorrect; at the None level, events with a logging level of 0 or lower are logged. Answer B is incorrect; at the Minimum level, events with a logging level of 1 or lower are logged. Answer D is incorrect; at the Maximum level, events with a logging level of 5 or lower are logged. Be wary of using Medium and Maximum logging for a large number of categories or for a large period of time because they can quickly lead to the application log being flooded with event entries, masking otherwise important lower-level events that you might need to see to successfully troubleshoot a server problem. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A16:	Answer A is correct. You need to use the eesutil utility to check the offline backup for corruption after it has been completed. Answers B and C are incorrect; the Exchange System Manager and Exchange Task Wizard have no function in performing backups. Answer D is incorrect; the isinteg utility is used to examine and repair databases from a high level. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A17:	Answers B and C are correct. Clients can access this general-purpose folder using HTTP or NNTP only. Answer A is incorrect; clients can access the default public folder tree using MAPI, HTTP, or NNTP. Answers D and F are incorrect; SMTP and IMAP4 are mail protocols. Answer E is incorrect; SNMP is a network management protocol. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A18:	Answer B is correct. Besides keeping the Exchange address lists up to date, the Recipient Update Service is also responsible for updating email addresses of recipient objects based on the recipient policies in place in your organization. Answer A is incorrect; delivery and nondelivery reports are sent as standard email messages. Answer C is incorrect; you need to use a System Monitor or other monitoring means to be notified of a stuck queue. Answer D is incorrect; there is no means in Exchange Server 2003 for users to determine if other users are logged on to the network. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A19:	Answer B is correct. You need to create a new SMTP email address and designate it as her primary SMTP email address. This will be the email address shown in the From box of all outgoing messages. Answer A is incorrect; there is no reason to create a new user account to accomplish this task. Answer C is incorrect; you cannot configure forwarding on a contact object. Answer D is incorrect; you should not delete her old SMTP email address as this will prevent her from getting email sent to this address. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A20:	Answer A is correct. You cannot use the Exchange Server Migration Wizard to migrate mailboxes and users from within the same organization. Answer B is incorrect; the ADC has no influence on the Exchange Server Migration Wizard. Answer C is incorrect; the Exchange Server Migration Wizard will work on any Exchange Server 5.5 server as long as it is not a part of the same organization. Answer D is incorrect; you can only use the Exchange Server Migration Wizard if the target server is in a separate Exchange organization. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A21:	Answer F is correct. ForestPrep must be run in the domain that hosts the Schema Master. Answer A is incorrect; generally, but not always, the Schema Master is located in the root domain of the forest. Answer B is incorrect; each domain in a forest has a RID Master, hence, running ForestPrep in the domain that hosts a RID Master might or might not mean that the utility is run in the single domain in the forest that hosts the Schema Master. Answer C is incorrect; a domain with a global catalog server does not necessarily host the Schema Master. Answer D is incorrect; a domain with the Domain Naming Master does not necessarily host the Schema Master. Answer E is incorrect; all domains have a PDC Emulator. As such, a domain with a PDC Emulator might or might not host the Schema Master. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A22:	Answer C is correct. Unlike Exchange 2000 Server, the user account that runs the DomainPrep utility only needs to be a member of the Domain Administrators group. Answer A is incorrect; ForestPrep requires Schema Administrators permission, but DomainPrep does not. Answer B is incorrect; DomainPrep does not require the account to be a member of the Power Users group. Answer D is incorrect; ForestPrep requires that the account be a member of the Enterprise Administrators group, whereas no such limitation applies to DomainPrep. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A23:	Answers B and C are correct. A smart host relays SMTP traffic from the internal network to the Internet. If the smart host fails, mail delivery to and from the Internet also fails. Answer A is incorrect; internal mail functions are not influenced by the failure of a smart host on the screened subnet. Answer D is incorrect; Internet mail will not be sent or received. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A24:	Answer B is correct. As they require their mail folders to be downloaded securely, you should open the secure IMAP4 port (port 993) on the external firewall. Answer A is incorrect; port 110 is the insecure POP3 port. Answer C is incorrect; port 995 is the secure POP3 port, which allows users to download mail, but not download and interact with mail folders. Answer D is incorrect; port 143 is the insecure IMAP4 port. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A25:	Answer D is correct. A bottleneck should be thought of as a lack of adequate resources meaning that the network is demanding more resources than your servers have available to them. Bottlenecks often manifest themselves as slowdowns, thus making them more difficult to correctly identify and correct. Items such as the number of requests and the frequency of the requests are large contributors to bottlenecks. Answer A is incorrect. A queue length that is steadily increasing might be the result of any number of problems, including insufficient resources as such, an increasing queue length might lead to a bottleneck. Answer B is incorrect; response time is very difficult to track accurately and is typically used to compare the current performance of a server against a known value at a previous time. Answer C is incorrect; a decreased throughput rate is not indicative, by itself, of any problem and must be accompanied by other indications. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A26:	Answer B is correct. Each page of data in the databases is 4KB in size, thus answers A, C, and D are incorrect. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A27:	Answer C is correct. The URL http://servername/exchange/jsmith/inbox would point to the Exchange inbox of the user jsmith. The correct URL to access Outlook Web Access is http://servername/exchange/, thus the mail child domain in answer A is incorrect. The URL http://servername/mail/jsmith/ is incorrect by default configuration because you must access the /exchange/ directory on the IIS server, thus answer B is incorrect. Answer D is also incorrect because of the /mail/ directory in the URL. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A28:	Answer B is correct. You should give consideration to running the Recipient Update Service for the applicable domain(s) in update mode to ensure that the Exchange address lists are updated as quickly as possible. Answer A is incorrect; there is no need to perform an unscheduled server backup due to the addition of new users. Answer C is incorrect; the rebuild operation is not required and proves to be very time- and resource-intensive when only users have been added. Answer D is incorrect. Although you might need to pay more attention to the server's performance over the next week or two after adding the new users, it is not an immediate concern compared to getting the Exchange address lists updated. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A29:	Answer A is correct. To allow the assistant to send messages that appear to be directly from the vice president, you need to configure the vice president's mailbox with the Send As permission for the assistant. Answer B is incorrect; by configuring the Send on Behalf permission, messages will have the following format in the From box: DelegatedUser on behalf of MailboxOwner. Answer C is incorrect; the assistant does not need Full Mailbox Access permissions to the vice president's mailbox to accomplish the desired result. Answer D is incorrect; forwarding all messages to the assistant's mailbox does not allow her to send outgoing messages that appear to come directly from the vice president. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A30:	Answers A and B are correct. The Active Directory Migration Tool allows you to import the accounts from the Windows 2000 Server domain to the new Windows Server 2003 child domain. The Exchange Server Migration Wizard can then be run to move across all of the mailbox data. As accounts will already have been moved across, they retain their old passwords and SID history, something that does not occur if only the Exchange Server Migration Wizard is used. Answers C and D are incorrect. The ADC or LDAP connector is used between Exchange Server 5.5 and AD. This scenario deals with Exchange 2000 Server. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A31:	Answers B, C, and D are correct. To install Exchange Server 2003, you need to have the .NET Framework, ASP.NET, WWW Publishing Service, SMTP Service, and NNTP Services installed. Answer A is incorrect. Exchange Server 2003 can be installed on Windows Server 2003 without any service packs; although if service packs are available, it is always prudent to include them. Answer E is incorrect; the server hosting Exchange Server 2003 does not need the DNS server service installed, though it does need to be able to contact a DNS server. Answer F is incorrect; you do not need to install Exchange Server 2003 on a domain controller, although Exchange Server 2003 does need to be able to contact a domain controller. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A32:	Answer C is correct. As other hosts on the same LAN can contact the Exchange server, you should suspect the default gateway or the subnet mask. You should also look at the options presented in the question as there might be several solutions, but only one presented to you. You might think of a solution that is not presented and this might block you from seeing another solution. Of the options presented, changing the default gateway to 10.10.184.193 would remedy the situation. Answer A is incorrect; altering the IP address to this particular address does not remedy the situation (and most likely means that the server could not communicate with other servers). Answer B is incorrect; changing the subnet mask does not remedy the situation as the default gateway would still be on another subnet. Answer D is incorrect; the DNS server is not the problem in this scenario. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A33:	Answers A, C, and D are correct. The Exchange Administrator role can add, delete, and rename objects as well as view configuration information. Answer B is incorrect; only the Exchange Full Administrator role can delegate privileges to other Exchange administrators. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A34:	Answer C is correct. The Memory \ Pages/Sec counter indicates the number of hard page faults occurring per second. A hard page fault occurs when data or code is not in memory and must be retrieved from the hard drive. Each time this happens, disk activity is required, and process is temporarily halted (because disk access is momentarily slower than RAM access). A bottleneck in memory is likely when this number is 20 or greater, thus answers A, B, and D are incorrect. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A35:	Answers B, D, and F are correct. Offline backups require that the databases first be dismounted, thus making them unavailable to users; therefore, answer A is incorrect. Answers C and E are incorrect. In addition to making the database unavailable for user access during the backup, offline backups also have these undesirable side effects: the transaction logs are not purged after the backup has completed and the database is not checked for corruption. You need to use the eesutil utility to check the offline backup for corruption after it has been completed and after you have already placed the database back online. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A36:	Answers B and E are correct. In a default Exchange organization, only the HTTP and SMTP virtual servers are operational. Answers A, C, and D are incorrect; you can opt to enable the POP3, NNTP, and IMAP4 virtual servers as needed, but they are not enabled by default. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A37:	Answer D is correct. The best solution to this problem is to create a new mailbox store that will house all of the members of the Marketing department. After this has been done, you can apply a new mailbox store policy to this mailbox store that configures the desired storage limits. Answer A is incorrect; you cannot use a WMI filter to determine which users are affected by a mailbox store policy. Answer B is incorrect; you cannot remove the existing mailbox store policy from the existing mailbox stores because you want to ensure the rest of your users still have the same limits enforced. Answer C is incorrect; you can only have one mailbox store policy affecting a specific tab at one time. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A38:	Answers B, C, and D are correct. The following user attributes are not replicated to global catalog servers and, thus, cannot be used to create the LDAP query for query-based distribution groups: Assistant, Comment, Direct Reports, Division, E-mail address (other), Employee ID, Generational Suffix, Home Address, Home Drive, Home Folder, ILS Settings, International ISDN Number, International ISDN Number (Others), Logon Workstations, Member Of, Middle Name, Teletex Number, Teletex Number (Others), and Title, thus answers A, E, and F are incorrect. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A39:	Answers C and D are correct. The ADC should be installed on the global catalog server in multiple domain forests as they need to communicate heavily. The ADC should be installed in the same site as the Exchange Server 5.5 server. Answers A and B are incorrect; the ADC can be installed multiple times. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A40:	Answers A and D are correct. Only the Enterprise Edition of Exchange Server 2003 supports clustering. With four nodes, only active/passive clustering is supported. Answer B is incorrect; the Standard Edition of Exchange Server 2003 does not support clustering. Answer C is incorrect; Exchange Server 2003 does not support four-node active/active clustering. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A41:	Answers D and E are correct. As the server was functioning up until recently, you can discount any configuration problem because the configuration has not changed. This leaves the DNS server and the default gateway failing as likely culprits. As the users don't use the World Wide Web, you cannot rule out default gateway failure. Answer A is incorrect; if an incorrect default gateway was set, the server would not have functioned before. Answer B is incorrect; if an incorrect subnet mask was set, the server would not have functioned before. Answer C is incorrect; if an incorrect DNS server was set, the server would not have functioned before. Answer F is incorrect; if the firewall was blocking email, the server would not have received email before. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A42:	Answers C and D are correct. As the bridgehead server is a standalone and, hence, not a part of a domain, it can not use Kerberos v5 or Active Directory authentication. It is limited to Shared Key authentication. Answer A is incorrect; Kerberos v5 can only be used by computers that are members of domains. Answer B is incorrect; Active Directory authentication can only be used by computers that are members of domains. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A43:	Answer B is correct. The Memory \ Available Bytes counter indicates the total amount of physical memory available to processes running on the computer. This number's significance varies as the amount of memory in the computer varies, but if this number is less than 4MB, you generally have a memory deficiency, thus answers A, C, and D are incorrect. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A44:	Answer D is correct. When using the recovery storage group method of performing an Exchange Server restoration, you can restore any number of mailbox stores from a single storage group at the same time, thus answers A, B, and C are incorrect. Exchange Server 2003, Standard Edition allows a maximum of two databases per storage group, whereas Enterprise Edition allows a maximum of five databases per storage group. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A45:	Answers B, C, and F are correct. Port 53 must be open to allow Internet users to access the DNS server located in the screened subnet. Port 80 must be open to allow Internet users to access the public Web server located in the screened subnet. Port 443 must be open to allow HTTP over SSL connections to be made to your Outlook Web Access server. Answer A is incorrect because no mention is made of an FTP server being in the screened subnet. Answer D is incorrect; port 88 is used for Kerberos authentication traffic and has no business being opened on the external firewall. Answer E is incorrect; port 389 is used for LDAP query traffic and has no business being open on the external firewall. Answer G is incorrect; no mention was made of using POP3 over SSL. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A46:	Answer C is correct. The General tab allows you to select a default offline address list for the mailbox store. Answer A is incorrect; the Database tab allows you to configure the maintenance interval for the mailbox store. Answer B is incorrect; the Limits tab allows you to configure storage and usage limits for the store. Answer D is incorrect; the Full-Text Indexing tab allows you to configure the operation of the full-text index. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A47:	Answers A and D are correct. The best solution in this scenario is to configure a bridgehead server or a public folder server to act as an expansion server for each of the distribution groups, thus removing this responsibility from any of the mailbox servers. Answer B is incorrect; using query-based distribution groups instead of static distribution groups will likely make the problem worse due to the LDAP queries that will be executed each time a message is sent to them. Answer C is incorrect; adding additional mailbox servers to each routing group may likely improve the overall performance of the Exchange organization, but it is not the most efficient solution available. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A48:	Answer D is correct. The ADC replicates AD information to the Exchange Server 5.5 directory. The ADC Services console can be used to initiate an immediate replication between these two directories. Answer A is incorrect; the Exchange Server Migration Wizard cannot be used to initiate replication. Answer B is incorrect; Active Directory Users and Computers cannot be used to initiate replication. Answer C is incorrect; the DCPROMO command cannot be used to initiate replication. For more information, see Chapter 3, "Upgrading, Integrating, and Troubleshooting Exchange Server 2003 in Mixed Environments."
A49:	Answer B is correct. Mailboxes can only be moved between administrative groups when the Exchange Server 2003 organization is running in native mode. Answers A and C are incorrect; the mode of the Exchange Server 2003 organization exists irrespective of the mode of the Windows 2000 Server domain. Answer D is incorrect; the Exchange Server 2003 organization cannot be upgraded to Windows Server 2003 functional level. Answer E is incorrect, the mode of the Exchange Server 2003 organization exists irrespective of the mode or functional level of the Windows 2000 Server domain. Upgrading to this functional level would require installing Windows Server 2003. For more information, see Chapter 2, "Installing, Configuring, and Troubleshooting Exchange Server 2003 in a New Exchange Environment."
A50:	Answer B is correct. On a 100-megabit network, the NIC should not be putting out more than about 7MB/Sec. It is possible that the NIC is being overloaded by LAN traffic. A second NIC on a different subnet should alleviate this problem. Answer A is incorrect; installing a new Exchange Server 2003 computer would not count as minimum effort. Answer C is incorrect; the memory figure does not indicate the need for more RAM. Answer D is incorrect; the processor is not being significantly taxed at present. Answer E is incorrect; a software RAID is slower than a hardware RAID. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A51:	Answers B, D, and E are correct. For RPC over HTTP access to work, ports 88 (Kerberos), 389 (LDAP), and 80 (HTTP) need to be open between the front-end server and the back-end servers. Kerberos facilitates authentication. LDAP is used to locate which back-end server hosts the user's mailbox. HTTP is used to carry the RPC traffic. Answer A is incorrect; port 110 is used for POP3. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A52:	Answer A is correct. The System \ Processor Queue Length counter indicates the number of processes that are ready but waiting to be serviced by the processor(s). There is a single queue for all processors, even in a multiprocessor environment. A sustained queue of more than 2 generally indicates processor congestion, thus answers B, C, and D are incorrect. For more information, see Chapter 8, "Managing, Monitoring, and Troubleshooting Exchange Server Performance."
A53:	Answers A, B, and D are correct. Using the alternate recovery forest method has the following advantages: allows for the restoration of public folders, allows for the restoration of shadow copies, allows for the restoration of data in a nonproduction environment, and provides a means to recover purged mailboxes after the mailbox deletion retention period has expired. Answer C is incorrect; the recovery storage group method provides the least amount of downtime for affected users. For more information, see Chapter 7, "Managing, Monitoring, and Troubleshooting Exchange Server Computers."
A54:	Answer C is correct. Front-end and back-end Exchange servers only communicate on port 80, thus you cannot use SSL. In this case, the only available option is to use IPSec to secure the connection between these two servers. Answer A is incorrect; Kerberos is a network authentication protocol, not an encryption protocol. Answer B is incorrect; SSL cannot be used because using port 443 is not an option. Answer D is incorrect; Encrypting File System (EFS) is only available to use on NTFS formatted volumes to encrypted files and folders. For more information, see Chapter 6, "Managing, Monitoring, and Troubleshooting the Exchange Organization."
A55:	Answer A is correct. In this situation, you need to configure a recipient (email address) policy that allows these users to receive mail to their alias in either namespace. When enough time has passed and all users have informed those that they communicate with of their new email address, you can remove this functionality. Answers B and C are incorrect; mailbox store and server policies are designed to configure settings on mailbox stores and servers. Answer D is incorrect; a mailbox manager recipient policy is not helpful in this situation because it determines things such as how long messages are allowed to remain in a mailbox and what to do with them at that time. For more information, see Chapter 5, "Managing Address Lists and Exchange Policies."
A56:	Answer B is correct. When a specific expansion server is configured for a distribution group, that expansion server must be available for messages sent to that distribution group to be delivered, thus answer D is incorrect. If the expansion server for a distribution group becomes unavailable, no other expansion server can take over its job, thus answers A and C are incorrect. For more information, see Chapter 4, "Managing Exchange Recipient Objects."
A57:	Answer C is correct. Administrative groups allow you to delegate administrative authority over a group of Exchange Server 2003 computers. Exchange Server 2003 computers are added to administrative groups at installation time. After being added to a group, they cannot be moved from that group. Answer A is incorrect; placing each Exchange Server 2003 computer in a site-specific OU does not enable different groups to administrate particular servers. Answer B is incorrect. As the Exchange servers are installed before the administrative groups are created, all will be members of the First Administrative group and will not be able to be moved. Answer D is incorrect; routing groups cannot be used to delegate Exchange Server 2003 administrative authority. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A58:	Answer A is correct. ISA Server can inspect RPC traffic for problems (such as malignant packets) before forwarding it on to an Exchange server. Answer B is incorrect; Exchange Server 2003 can be configured as an RPC proxy server. Answer C is incorrect; because both Exchange and ISA Server can perform this function and, hence, render a VPN unnecessary, this benefit does not exist for ISA Server alone. Answer D is incorrect; only Outlook 2003 supports RPC over HTTP. For more information, see Chapter 9, "Managing Security in the Exchange Environment."
A59:	Answers A and C are correct. A host with the IP address 10.10.10.121 and subnet mask 255.255.255.240 will be on the same network as hosts with IP addresses 10.10.10.113 through to 10.10.10.126. Although it is common to have the default gateway as the first addressable host in a subnet, this does not have to be the case. Answer B is incorrect. Host 10.10.10.110 is on a separate logical subnet to host 10.10.10.121 subnet 255.255.255.240. Answer D is incorrect. Host 10.10.10.129 is not on the same logical subnet as 10.10.10.121 subnet 255.255.255.240. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."
A60:	Answer A is correct. By performing a capture of traffic from the SMTP server, you can ascertain whether all traffic traveling to the server is indeed encrypted. Answer B is incorrect; Telnet does not have this functionality. Answer C is incorrect; NNTP does not have this functionality. Answer D is incorrect; OWA does not have this functionality. For more information, see Chapter 10, "Managing and Monitoring Technologies That Support Exchange Server 2003."