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单选题
What will significantly degrade DSL performance， regardless of DSL rate or line length？ （）
A
Microliters installed between a telephone and shared line
B
POTS splitters at the subscriber’s end of the DSL line
C
POTS splitters at the telco CO
D
None of the other alternatives apply
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考题
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单选题What is the correct relative switching priority in a BLSR ring (higher to lower)?（）A
signal fail, signal degrade, manual switchB
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单选题A large check processing company is quite impressed with the ingestion performance of a VTL. After calculating their nightly backup requirements it was determined that the restore performance of the VTL was significantly less than the backup performance. Which of the following business requirements should the customer revisit to ensure a successful implementation?（）A
RPOB
RTOC
backup windowD
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考题
单选题Identify a performance impact when using the Performance Schema.（）A
There is no impact on performanceB
The overhead depends on the settings of the Performance SchemaC
There is an overhead for querying the Performance Schema but not for having it enabledD
There is a constant overhead regardless of settings and workload
考题
单选题Select valid reasons for IT performance issues that cannot be universally solved by adding more hardware：（）A
adding hardware may exacerbate inefficiency， which can lead to over provisioning and lower utilizationB
performance may degrade due to bottlenecks such as database connections that won’t scale in lock step with other dimensions such as computing capacity or memoryC
both A and B are validD
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问答题What is one thing that all the wise men, regardless of their religion and politics, agree is between heaven and earth?
考题
单选题What is the effect of turning on all available downstream carrier tones in a DMT DSL transmissionsystems？（）A
Downstream RS error correction effectiveness is reducedB
The downstream line rate and throughput remains unchanged， but FEC efficiency is reducedC
The upstream DSL bandwidth is reduced， since less carriers become available for upstream trafficD
The downstream DSL bandwidth is increased
考题
单选题In a Routed 1483 network what method of routing is typically employed on the DSL router？（）A
staticB
OSPFC
RIPv1D
RIPv2
考题
单选题What does the Web Session Affinity feature of Active GridLink for RAC provide?（）A
It mandates that HTTP sessions must be stored in an Oracle RAC database for the highest throughput and availability.B
It pins a connection to the thread associated with a web session such that subsequent connection reservations are significantly faster.C
It stores a reference to the connection associated with an HTTP session in the session object.D
It allows developers to modify how their web application reserves and releases database connections to allow enhanced performance.E
It provides improved performance by associating a database connection with an HTTP session.
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单选题Which feature/offering of Oracle Application Grid makes it particularly easy to significantly increase the performance of Web-based applications with no code change ？ （）A
ActiveCacheB
Store-and-ForwardC
Messaging BridgeD
MetaCache
考题
单选题What is the correct relative switching priority in an MS-SPRing ring （higher to lower）？ （）A
signal fail， signal degrade， manual switchB
signal degrade， signal fail， manual switchC
protection lockout， manual switch， path AISD
forced switch， manual switch， signal degradeE
protection lockout， manual switch， forced switch
考题
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Your speed will significantly increaseB
Your draft will significantly decreaseC
Your bow will sheer towards the other vesselD
Your bow will sheer away from the other vessel
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