Objective 6.4 Exchange 2010

Question 1

You need to know what steps to take to make use of the ______, introduced in Exchange Server 2010 SP1, which maintains a list of servers that are unavailable. You should be aware that enhanced DNS uses this list to filter out any unavailable servers when applying round robin logic for load balancing.

Answer 1

Healthy Server Selector

Question 2

The exam might expect you to be aware that Exchange 2010 uses an enhanced DNS client to resolve the next hop selection to a list of target server names, and that enhanced DNS provides ______ functionality for Exchange 2010 transport servers by using round robin.

Answer 2

load-balancing

Question 3

Round robin is typically used to distribute incoming messages from the ______. You can accomplish this by using DNS round robin and MX records that have the same preference value. In this way, you do not need to deploy a load-balancing solution to distribute the load across your Edge Transport servers, which can present problems—particularly with Windows NLB that requires Active Directory.

Answer 3

Internet

Question 4

The exam might test that you know that if an external SMTP server needs to send a message to a specific mail domain, it runs a query against the target domain’s zone looking for ______ records.

Answer 4

MX

Question 5

If the SMTP server is unable to deliver mail to the first address returned by the MX record query, it then attempts delivery to other ______ returned by the query.

Answer 5

addresses

Question 6

The exam might test that you are aware that Client Access servers and Edge Transport servers can use Windows ______ as a part of their highavailability strategy, and that NLB distributes traffic between multiple hosts based on each host’s current load.

Answer 6

NLB

Question 7

You can use the NLB Manager console to add and remove nodes to and from NLB clusters. Also, a node is ______ automatically if it fails.

Answer 7

removed

Question 8

NLB clusters reconfigure themselves ______ when you add a new node or remove a node.

Answer 8

automatically

Question 9

Each node in an NLB cluster sends a ______ message to all other nodes after a second, informing them of its status.

Answer 9

heartbeat

Question 10

When a node fails to transmit five consecutive heartbeat messages, the other nodes in the cluster alter the configuration of the cluster, excluding the failed node. This is known as ______.

Answer 10

convergence

Question 11

You can take an existing node in an NLB cluster offline for ______ and then return it to service without having to reconfigure the cluster manually.

Answer 11

maintenance

Question 12

You can configure the operation mode of an NLB cluster by editing the cluster properties in the NLB ______.

Answer 12

Manager

Question 13

The cluster operation mode determines how you configure the cluster’s network address and how that address relates to the existing network adapter addresses. All nodes within a cluster must use the same cluster operations mode. You can configure one of the following three cluster operations modes: ______.

Answer 13

1. Unicast Mode
2. Multicast Mode
3. IGMP Multicast Mode

Question 14

By default, a cluster ______ all traffic received on the cluster IP address across all nodes.

Answer 14

balances

Question 15

However, you can use port rules to control how network traffic is treated by an NLB cluster on a ______ basis.

Answer 15

port-by-port

Question 16

You can configure the cluster to forward traffic to a specific node rather than to all nodes so that the cluster can balance some but not all traffic. You accomplish this by configuring the port rule filtering mode. The options are ______ or ______.

Answer 16

multiple host, or

single host

Question 17

You can configure the affinity property if the port rule filtering mode is ______ host.

Answer 17

multiple

Question 18

It is not necessary to configure the affinity for a ______ host rule because that rule already ties traffic to a single node in the cluster. The affinity property determines where the cluster sends subsequent client traffic after the initial client request.

Answer 18

single

Question 19

If you set the affinity property to ______, the cluster ties all client traffic during a session to a single node.

Answer 19

Single

Question 20

When you set a rule affinity property to ______, the cluster does not bind a client session to any particular node.

Answer 20

None

Question 21

When you set a rule affinity property to ______, a client session is directed to cluster nodes located on a specific TCP/IP subnet.

Answer 21

Network

Question 22

When you need to perform maintenance on a node in an NLB cluster, you can use the ______ function to stop new connections to the node without disrupting existing connections.

Answer 22

Drain

Question 23

To drain a node, you right-click it from within NLB Manager, click Control Ports, and then click ______.

Answer 23

Drain

Question 24

You should be aware that if one Client Access server in a client access array fails, client ______ is automatically redirected to other Client Access servers in the array.

Answer 24

traffic

Question 25

The exam might test that you know that client access arrays work on a ______ basis, and a single client access array cannot span multiple sites.

Answer 25

per-site

Question 26

You should also know that client access arrays can use Windows NLB or a hardware NLB solution. If you are using Windows NLB, you are limited to ______ nodes in the array, and you cannot also configure the server hosting the Client Access server role as a part of a DAG.

Answer 26

eight

Question 27

You can use the EMS ______ cmdlet to create a client access array.

Answer 27

**New-ClientAccessArray**

Question 28

You can use the EMS New-ClientAccessArray cmdlet to create a client access array. You must first configure ______ for your Client Access servers and configure a new DNS record that points to the virtual IP address that you intend to use for the client access array.

Answer 28

load balancing

Question 29

If you created a DNS record for casarray.adatum.com, and you configured load balancing for Client Access servers in the Aberdeen site, the following command creates a client access array named Aberdeen Array: \_\_\_\_\_\_.

Answer 29

**New-ClientAccessArray –Name 'Aberdeen Array' –Fqdn 'casarray.adatum.com' –Site Aberdeen**

Question 30

When you have created a new client access array, you need to use the ______ cmdlet and the RpcClientAccessServer parameter to configure the existing mailbox databases in the site.

Answer 30

**Set-MailboxDatabase**

Question 31

The following command configures mailbox database MyDB-01 to use casarray.adatum.com: \_\_\_\_\_\_.

Answer 31

**Set-MailboxDatabase MyDB-01 –RpcClientAccessServer 'casarray.adatum.com'**

Question 32

The exam might test that you are aware that when you deploy an extra Hub Transport server on a site, you do not need to perform any additional configuration, because configuration data automatically replicates through \_\_\_\_\_\_.

Answer 32

Active Directory

Question 33

You need to know what steps to take to use either of the two methods through which you can make Edge Transport servers highly available—you can load-balance Edge Transport servers by using \_\_\_\_\_\_, or you can configure multiple MX records in the external DNS namespace.

Answer 33

NLB

Question 34

The exam might test that you know that Windows NLB requires hosts to be members of the same Active Directory domain, and that because you deploy Edge Transport servers on perimeter networks, most Edge Transport server load-balancing solutions use ______ NLB.

Answer 34

hardware

Question 35

You might need to use an NLB solution if you have multiple Edge Transport servers but have only one ______ address available for incoming SMTP traffic.

Answer 35

public IPv4

Question 36

Typically, how would you distribute incoming messages from the Internet to your Edge Transport servers?

Answer 36

You would employ DNS round robin and MX records that have the same preference value.

Question 37

What GUI tool is used to configure NLB settings?

Answer 37

The NLB Manager console.

Question 38

What NLB property determines where a cluster sends subsequent client traffic after the initial client request?

Answer 38

The affinity property.

Question 39

You have multiple Edge Transport servers but have only one public IPv4 address available for incoming SMTP traffic. How would you configure high availability for your Edge transport servers?

Answer 39

You would assign the public IPv4 address as the NLB virtual address.

Question 40

You have created a DNS record for clientarray.contoso.com, and you have configured load balancing for Client Access servers in the Glasgow site. What EMS command do you issue to create a client access array named Glasgow Array?

Answer 40

You issue the **New-ClientAccessArray –Name ‘Glasgow Array’ –Fqdn ‘clientarray.adatum.com’ –Site Glasgow** command.