Three homogeneous disks [图], [图] and [图] have t...

Three homogeneous disks,andhave the same radius, the same weightand the same angular velocity. As shown, diskrotates around its mass center; diskrotates around a fixed axis on its edge; diskrotates with slipping on a horizontal surface. If the momenta of the three disks are,and, respectively, then

A、

B、

C、

D、

Three homogeneous disks,andhave the same radius, the same weightand the same angular velocity. As shown, diskrotates around its mass center; diskrotates around a fixed axis on its edge; diskrotates with slipping on a horizontal surface. If the momenta of the three disks are,and, respectively, then

A、

B、

C、

D、

YouaremanaginganOracleDatabase11gASMinstancewithadiskgroupdg01havingthreedisks.Oneofthedisksinthediskgroupbecomesunavailablebecauseofpowerfailure.YouissuedthefollowingcommandtochangetheDISK_REPAIR_TIMEattributefrom3.6hoursto5hours：ALTERDISKGROUPdg01SETATTRIBUTE’disk_repair_time’=’5h’；Towhichdisksinthediskgroupwillthenewvaluebeapplicable？（）

A.alldisksinthediskgroup

B.alldisksthatarecurrentlyinOFFLINEmode

C.alldisksthatarenotcurrentlyinOFFLINEmode

D.alldisksinthediskgrouponlyifallofthemareONLINE

You have a Web server named Server1 that runs Windows Server 2003 Web Edition Service Pack 2 (SP2).Server1 has 2 GB of RAM, two processors, and two physical disks. Volume C: is located on the first disk and has a total capacity of 80 GB. Volume D: is located on the second disk and has a total capacity of 500 GB.Server1 hosts a single Web site. Volume C: contains all Web site content. The Web site is configured to use the DefaultAppPool application pool.Users report that the Web site is slow to load. You run a performance report on Server1 and receive the results shown in the following table.You need to improve the performance of the Web site.What should you do?（）

A. Install more RAM.

B. Install an additional processor.

C. Move the Web site content.

D. Create a new application pool.

You have a Web server named Server1 that runs Windows Server 2003 Web Edition Service Pack 2(SP2). Server1 has 2 GB of RAM, two processors, and two physical disks. Volume C: is located on thefirst disk and has a total capacity of 80 GB. Volume D: is located on the second disk and has a totalcapacity of 500 GB.Server1 hosts a single Web site. Volume C: contains all Web site content. The Web site is configured touse the DefaultAppPool application pool.Users report that the Web site is slow to load. You run a performance report on Server1 and receive theresults shown in the following table.You need to improve the performance of the Web site.What should you do?（）

A. Install more RAM.

B. Install an additional processor.

C. Move the Web site content.

D. Create a new application pool.

Ezonexam has 50 offices. The employees in these offices have limited knowledge of Windows 2000. Each office has a network of between five and 20 client computers. The office networks are connected to each other. The company is buying 50 identical computers to run Windows 2000 Server in these offices. The server must be installed to the company's standard configuration. You use Setup Manager to create a network shared distribution folder and a Unattend.txt file that specifies the company's standard configuration.

You want to automate the installation process as much as possible, in the least possible amount of time.

What should you do?

A．Run Makebt32.exe to create four installation startup disks and add the Unattend.txt file to the first disk. Instruct an employee at each office to start the installation by using these disks.

B．Create a Microsoft MS-DOS network boot disk that makes a connection to the network shared distribution folder and runs the winnt command with the /s and /u switches. Instruct an employee at each office to start the installation by using this disk.

C．Create a floppy disk that contains only the Unattend.txt file. Instruct an employee at each office to start the installation by using the Windows 2000 Server compact disc, with the floppy disk inserted.

D．Create a Windows 2000 folder on a hard disk. Copy the Windows 2000 Server compact disc to the folder. Add the Unattend.txt file to the folder. Copy the folder to a writeable CD. Instruct an employee at each office to start the installation by suing this CD.

ThepSeriestechnicalspecialistisdesigningatwoLPARp5-570witheighttotalprocessors.ThesystemisatestsystemtorunAIX5.2.Thecustomerhasstatedapreferenceforinternaldisksforthebootdevices.ThecustomerhassaidtheymaylaterneedtorunthreeorfourLPARswithoutincreasingthenumberofprocessors.WhatshouldthepSeriestechnicalspecialisttellthecustomerabouttheabilityofthep5-570tomeettheirrequirements？（）

A.ItwillrequireadditionalSCSIadaptersandI/OdrawersorexternaldiskstosupportmorethantwoLPARs.

B.Ithassufficientbuilt-inSCSIcontrollersanddiskenclosurestosupportfourtotalLPARsbyonlyaddingthenecessaryadditionaldisks.

C.ItisunabletouseinternaldisksforLPARsandthereforeadditionaladaptersI/OdrawersorexternaldisksmustbeusedtosupportallLPARs.

D.ItcansupportsixLPARswithinternaldisksbutwillrequirespecialfeatures，cablesandanadaptertosupporttheadditionalLPARswithinternaldisks.

C

WASHINGTON - considering the serious warnings lately about Internet viruses(病毒) , users may don ' t use their machines just to keep them safe. In reality , common sense and a few basic tips can keep Internet surfers secure.

Anti-virus software is a must, and it should be updated at least once a week to recognize newIy viruses. If this is not done, you will meet great troubles.

People with broadband Internet connections should have also a frrewall. These protect the computer from attacks by hackers(黑客) .

Then it is time to think about computer habits. Unlike old viruses, which spread only through shared disks, the Intemet brings viruses straight to the e-mail box. If an e-mail with attachment(附件) comes from an unknown sender, or unexpectedly from a known sender, it should not be opened.

On receiving an unexpected attachment from a friend, experts suggest a telephone call to make sure of the mail' s source before opening. If you open the mail without any consideration, you will be easily attacked by the hackers.

65. Why should anti-virus software be updated at least once a week?

[ A] Because the newly published anti-virus software is more expensive.

[ B ] Because the previous(先前的 ) anti-virus software cannot work any longer.

[C]Because the inventors of viruses have suggested this idea.

[ D ] Because computer viruses are always developing.

??PCs originated as stand-alone(1), however,in recent years many have been(2)to Local Area Networks (LANs). In a LAN, the data and usually the user application reside on the File Server, a PC running a special Network Operating System (NOS) such as Novell's NetWare or Microsoft's LAN Manager. The File Server manages the LAN users' shared access to data on its hard(3)and frequently provides access to other shared resources, such as printers. While a LAN enables users of PC-based databases to share(4)data files, it doesn't significantly change how the DBMS works; all the actual data(5)is still performed on the PC running the database application.

??供选择的答案：

??(1) calculating?(2) common (3) connected??(4) disks?(5) displayed

??(6) systems??(7) printers??(8) processing??(9) some?(10) workstations

All microcomputer CD-ROM drivers can play audio compact disks.