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When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? ()(Choose two.)A. PPP session IDB. subscriber nameC. source MAC addressD. destination MAC address
题目
A. PPP session ID
B. subscriber name
C. source MAC address
D. destination MAC address
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第1题：
你正在创建一个生成 XML 文档的 ASP.NET Web 应用。你需要为文档增加一个 XML 声明。下面那个代码能够生成如下的 XML 声明?()A.XmlDocument doc = new XmlDocument();doc.Load("subscribers.xml");XmlDeclaration xmldecl = doc.CreateXmlDeclaration("encoding", "Unicode");
B.XmlDocument doc = new XmlDocument();doc.Load("subscribers.xml"); XmlDeclaration xmldecl = doc.CreateXmlDeclaration("1.0", null, "yes");
C.XmlDocument doc = new XmlDocument(); doc.Load("subscribers.xml"); XmlDeclaration xmldecl = doc.CreateXmlDeclaration("1.0", "Unicode", "yes");
D.XmlDocument doc = new XmlDocument(); doc.Load("subscribers.xml"); XmlDeclaration xmldecl = doc.CreateXmlDeclaration("1.0", "Unicode");
参考答案：C
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第2题：
You are the administrator of a SQL Server 2000 computer. You want to set up snapshot replication on the server. The server will serve as Publisher and Distributor for a minimum of 40 Subscribers.
Currently, you want to publish 3GB of data, but the data is expected to grow over time. Subscribers will receive a new snapshot each month.
You want to minimize the workload on the Publisher/Distributor. Which two actions should you take to configure snapshot replication? (Each correct answer presents part of the solution. Choose two)
A．Store the snapshot in the default folder on the Publisher/Distributor.
B．Store the snapshot in an alternative folder on the Publisher/Distributor.
C．Store the snapshot in a shared folder on a file server.
D．Create pull subscriptions.
E．Create push subscriptions.
正确答案：CD
解析：Explanation:
C: In SQL Server 2000 it is possible to store snapshot files in a location other than or in addition to the default location. Alternate locations can be on another server, on a network share, or on removable media. Saving snapshot files in an alternate location can alleviate disk overhead on the Distributor.
However, Subscribers running earlier versions of SQL Server cannot use the alternate snapshot location. When specifying the snapshot location on a network share, it is recommended that that share folder be dedicated for snapshot storage and files. Subscribers that need to access the snapshot files will need Read permission to the snapshot location and appropriate folders. If the snapshot folder is not shared for the appropriate Subscribers, the replication agents cannot access the folder and the replication will fail.
D: With pull subscriptions the Subscriber requests data and updates that are made at the Publisher. Thus allows the user at the Subscriber to determine when the data changes are synchronized. With pull subscriptions the administration of the subscription takes place at the Subscriber.
A feature of pull subscriptions is that the Distribution Agent for snapshot and transactional publications and the Merge Agent for merge publications all run at the Subscriber. This can result in a reduction of the amount of processing overhead on the Distributor. However, if needed, the Distribution Agent or Merge Agent can be run at the Distributor to offload agent processing from the Subscriber.
Incorrect Answers:
A: The default location for snapshot replication files are specified in the Specify Snapshot Folder dialog box that appears in the Configure Publishing and Distribution Wizard and in the Create Publication Wizard. The default location is usually on the Distributor.
B: In SQL Server 2000 it is possible to store snapshot files in a location other than or in addition to the default location. Alternate locations can be on another server, on a network share, or on removable media. Saving snapshot files in an alternate location can alleviate disk overhead on the Distributor, particularly when it is located on another server, or a file server.
E: Push subscriptions are created at the Publisher. This places higher processor overhead at a Publisher using a local Distributor as the Distribution Agent for the snapshot publication runs at the Distributor.
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第3题：
[A] who [B] when [C] where [D] which
正确答案：C
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第4题：
YouarecreatinganASP.NETWebsite.Thesitecontainspagesthatareavailabletoanonymoususers.ThesitealsocontainsapagenamedPremium.aspxthatprovidespremiumcontenttoonlymembersofagroupnamedSubscribers.Youneedtomodifytheweb.configfiletoensurethatPremium.aspxcanbeaccessedbyonlymembersoftheSubscribersgroup.Whichconfigurationshouldyouuse？（）
A.<locationpath="Premium.aspx"><system.web><authorization><allowusers="Subscribers"/><denyusers="*"/></authorization></system.web></location>
B.<locationpath="Premium.aspx"><system.web><authorization><allowroles="Subscribers"/><denyusers="*"/></authorization></system.web></location>
C.<locationpath="Premium.aspx"><system.web><authorization><allowroles="Subscribers"/><denyusers="?"/></authorization></system.web></location>
D.<locationpath="Premium.aspx"><system.web><authorization><denyusers="*"/><allowroles="Subscribers"/></authorization></system.web></location>
参考答案：B
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第5题：
WhichofthefollowingareassociatedwiththeapplicationlayeroftheOSImodel?(two.)()A.ping
B.Telnet
C.FTP
D.TCP
E.IP
参考答案：B, C
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第6题：
The beautiful mountain village__________ we spent our holiday last year is locatedin __________ is now part of Guangxi.A.which ; where
B.where; what
C.that ; what
D.when ; which答案：B解析：where在此充当地点状语，what既充当located in的宾语又充当is的主语，本题考查定语从句和名词性从句。mountain village在定语从句we spent our holiday last year作地点状语，故用关系副词where：第二个考查宾语从句，从句中缺少主语，故用what作主语。故选B。