单选题Which IGMPv2 message contains a non-zero "Max Response Time"？（）A Membership QueryB Membership ReportC Membership DelayD Backward Compatible IGMPv1 Report Message

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第2题：

Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）

• A、Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.
• B、It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet
• C、It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.
• D、It may transmit multicast traffic to the group at any time. 

第3题：

what kind of message in GLBP will inform other membership of GLBP learn virtual mac-address.

第4题：

Which of the following statements concerning IGMP are correct？（Choose all that apply.）（）

• A、With IGMPvl， queries are sent to a specific group
• B、Hosts issuing IGMPvl requests will be correctly interpreted by IGMPv2 hosts due to backwardcompatibility
• C、An IGMPv2 router will ignore IGMPv2 leave messages when IGMFVl hosts are present
• D、With IGMFV2， a leave message is supported
• E、An IGMPv2 host will send an IGMFVl report on an IGMFVl router
• F、An IGMPv2 router can only allow IGMPv2 hosts to execute a join request

第5题：

Which two statements are true about Internet Group Management Protocol (IGMP) snooping?（）

• A、IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
• B、IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
• C、IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
• D、IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
• E、IGMP snooping is enabled with the ip multicast - routing global configuration command.

第6题：

Which class defines the contract that ASP.NET implements to provide membership services using custom membership providers？（）

• A、FormsAuthentication
• B、RoleProvider
• C、SqlRoleProvider
• D、MembershipProvider

第7题：

Your company has a main office and 10 branch offices. Each branch office has an Active Directory site  that contains one domain controller. Only domain controllers in the main office are configured as Global  Catalog servers.   You need to deactivate the Universal Group Membership Caching option on the domain controllers in the  branch offices.    At which level should you deactivate the Universal Group Membership Caching option（）

• A、Site
• B、Server
• C、Domain
• D、Connection object

第8题：

你创建了一个使用membership 和personalization的Web站点。你必须使用一个已有的CRM数据库来存储成员资格(membership)数据.为此你需要实现成员资格提供程序(Membership Provider)。请问，你应该如何做？（）

• A、修改Web.config中连接到CRM数据库的连接字符串。
• B、在Web.config文件中增加一个新的SqlMembership Provider。
• C、创建一个从Membership Provider继承的自定义Membership Provider。
• D、创建一个从Membership User继承的自定义Membership Membership User。

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第14题：

Which IGMPv2 message contains a non-zero "Max Response Time"？（）

• A、Membership Query
• B、Membership Report
• C、Membership Delay
• D、Backward Compatible IGMPv1 Report Message

第15题：

Which enhancement w as added to IGMP version 3?（）

• A、membership query message
• B、membership report message
• C、leave group message
• D、source filtering
• E、destination filtering

第16题：

The Company LAN switches are being configured to support the use of Dynamic VLANs. Which of  the following are true of dynamic VLAN membership？（）

• A、VLAN membership of a user always remains the same even when he/she is moved to another  location.
• B、VLAN membership of a user always changes when he/she is moved to another location.
• C、Membership can be static or dynamic.
• D、Membership can be static only.
• E、None of the other alternatives apply.

第17题：

Which of the following protocols requests membership to a multicast group?（）

• A、IGMP
• B、SNMP
• C、SMTP
• D、ICMP

第18题：

You create a Web site with membership and personalization enabled. You must use an existing CRM database for storing the membership information. You need to implement the Membership Provider. What should you do? （）

• A、Modify the connection string in the Web.config file to connect to the CRM database.
• B、Add new a SqlMembershipProvider to the Web.config file.
• C、Create a custom Membership Provider inheriting from MembershipProvider.
• D、Create a custom MembershipUser inheriting from MembershipUser.

第19题：

You create a Web Form. The Web Form allows users to recover their passwords. You add a PasswordRecovery server control by using the following code segment.You need to ensure that the server control generates a new password and sends it by e-mail to the users e?mail address. Which two actions should you perform? （）

• A、Create a valid definition in the Web.config file.
• B、Set the passwordFormat attribute of the configured membership provider to Encrypted.
• C、Ensure that the enablePasswordRetrieval attribute of the configured membership provider is set to False.
• D、Ensure that the enablePasswordRetrieval attribute of the configured membership provider is set to True.

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