单选题You have a server that has very limited memory but has a very large table. You will use mysqldump to back up this table. Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?()A — quickB — skip-bufferC — si

题目
单选题
You have a server that has very limited memory but has a very large table. You will use mysqldump to back up this table. Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?()
A

— quick

B

— skip-buffer

C

— single-transaction

D

— tab

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第1题:

Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All client computers run Windows 7. You run Remote Desktop Services and Microsoft Virtual Desktop Infrastructure (VDI). You have the servers shown in the following table. Name Server role Server1 RD Session Host Server2 RD Virtualization Host Server3 RD Connection Broker Server4 RD Web Access You are configuring Remote Desktop Web Access (RD Web Access) to publish VDI desktops and remote applications on the RD Web Access server. You need to ensure that when remote users log on to the RD Web Access server they are presented with all remote applications and only their assigned VDI desktop. Which two actions should you perform on Server4?()

  • A、Set the source name to Server3.
  • B、Set the source name to Server1;Server2.
  • C、Select the option to use to one or more RemoteApp sources.
  • D、Select the option to use a Remote Desktop Connection Broker server as the source.

正确答案:A,D

第2题:

You have table 'apps','userdata' on server that uses MyISAM storage engine. You want to transfer this data to server but use InnoDB engine instead. You execute the following commands: ServerB commands: Shell> mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps Shell> mysql –u root –p –h server –e 'ALTER TABLE 'apps','userdata' ENGINE=InnoDB;' Shell> mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps What effect does the – order-by-primary argument have on the mysqldump command?()

  • A、It exports tables with the most indexes first to assist with import speeds
  • B、It ensures that unique indexes have no conflicts when the data is dumped
  • C、It orders by primary key to assist in speeding up importing to InnoDB tables
  • D、It must be specified so index data is dumped correctly when  –on-create-info is used

正确答案:C

第3题:

Your network contains a database server that runs Windows Server 2003 Standard Edition Service Pack 2(SP2). The server has 1 GB of RAM and a single hard disk.Queries against the databases on the server are very slow. You discover that the hard disk on the server is very active.You are evaluating whether to add RAM to the server.You need to use System Monitor to find out whether adding RAM will decrease disk activity.Which performance counter should you monitor? ()

A. LogicalDisk : % Free Space

B. Memory : Pages Faults/sec

C. Memory : Free System Page Table Entries

D. Server Work Queues : Queue Length


参考答案:B

第4题:

Your network contains a database server that runs Windows Server 2003 Standard Edition Service Pack 2 (SP2). The server has 1 GB of RAM and a single hard disk. Queries against the databases on the server are very slow. You discover that the hard disk on the server is very active. You are evaluating whether to add RAM to the server. You need to use System Monitor to find out whether adding RAM will decrease disk activity. Which performance counter should you monitor? ()

  • A、LogicalDisk : % Free Space
  • B、Memory : Pages Faults/sec
  • C、Memory : Free System Page Table Entries
  • D、Server Work Queues : Queue Length

正确答案:B

第5题:

You have a server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). Server1 runs a custom application. Users report that the performance of Server1 has decreased significantly during the last 30 minutes. You need to identify the current processor and memory usage for each process running on Server1. Which tool should you use? ()

  • A、Event Viewer
  • B、Task Manager
  • C、Query Process
  • D、System Configuration Utility

正确答案:B

第6题:

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named named Dworks in the instance. The Dworks table has a table named BillDetails which has a clustered primary key named BillId on the BillId column. The BillDetails table has a single XML column named GoodsDetails. The XML column has an XML index and XML data are stored in this XML column. A new column named GoodsID is added to the BillDetails table. GoodsID must be included in the primary key.  So what action should you perform to achieve this goal?()  

  • A、You should drop the XML index on the table. Modify the primary key. Recreate the XML index 
  • B、You should alter the XML index and set the ALLOW_ROW_LOCKS = OFF option. Alter the primary key and set the ALLOW_ROW_LOCKS = ON option. 
  • C、You should move the XML data to a temporary table. Clear the XML data from the original table by setting the GoodsDetails column to NULL. Modify the primary key. Repopulate the ProductSpecs column. 
  • D、You should disable the XML index on the GoodsDetails column. Modify the primary key.Enable the XML index on the ProductSpecs column.

正确答案:A

第7题:

You have a server that has very limited memory but has a very large table. You will use mysqldump to back up this table. Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?()

  • A、— quick
  • B、— skip-buffer
  • C、— single-transaction
  • D、— tab

正确答案:A

第8题:

You have recently completely creating a new application for Certkiller .com.This new application has to load an instance of the Inventory class from a large file named Inventory.dat.You need to ensure that the application executes the loading process in as little time as possible.What should you do?()

A.

B.

C.

D.


参考答案:C

第9题:

You administer a SQL Server 2008 instance. The instance is located on a four-processor, quad-core server. The server frequently experiences CPU pressure. The instance contains a very large mission-critical database that is used continuously. You need to ensure that online index rebuilds do not consume all available CPU cycles. Which configuration option should you use?()

  • A、affinity mask
  • B、affinity I/O mask 
  • C、max degree of parallelism
  • D、optimize for ad hoc workloads

正确答案:C

第10题:

Your network contains a database server that runs Windows Server 2003 Standard Edition Service Pack 2 (SP2). The server has 1 GB of RAM and a single hard disk. Queries against the databases on the server are very slow. You discover that the hard disk on the server is very active. You are evaluating whether to add RAM to the server. You need to use System Monitor to find out whether adding RAM will decrease disk activity. Which performance counter should you monitor? ()

  • A、LogicalDisk : % Free Space
  • B、Memory : Pages Faults/sec
  • C、Memory : Free System Page Table Entries
  • D、Server Work Queues : Queue Length

正确答案:B

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