单选题Select valid reasons for IT performance issues that cannot be universally solved by adding more hardware：（）Aadding hardware may exacerbate inefficiency， which can lead to over provisioning and lower utilizationBperformance may degrade due to bottleneck

There may be a bottleneck in the application that additional hardware would not solve.

Adding more hardware is costly and time consuming.

Adding hardware at the application layer may place additional load on an already overloaded database, network appliance, or storage system.

Adding more hardware may introduce new configuration requirements that need to be tested.

 adding hardware may exacerbate inefficiency， which can lead to over provisioning and lower utilization

 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 memory

 both A and B are valid

 neither A nor B are valid

Thread management inside the JVM process might be less effective than context switching between processes on the OS level. It is better to combine both these technologies to achieve full saturation of resources.

Current CPUs are multicore units. So starting managed servers in the amount of physical cores and pinning them 1:1 to cores will always get the best performance.

By a combination of prioritization of processes on the OS level and Work Manager in WLS, one  could tune the whole environment more precisely.

Assigning more than one managed server to hardware will never bring better performance.

More instances means more connections to databases, so one could serve more concurrent  calls on the database level. This is primarily why this approach will give better performance numbers.

Depending on the profile of the application, having more JVMs with smaller heaps will lead to more predictable response times than fewer JVMs with a large heap.

This can be accomplished by adding the MSExchangeIS Mailbox performance counters to the Performance Monitor.

This can be accomplished by running the Get-MailBoxStatistics cmdlet.

This can be accomplished by running the Get-StoreUsageStatistics cmdlet.

This can be accomplished by adding the MSExchangeIS Client performance counters to the Performance Monitor.

Throughput results are valid as a value from the Teleworker's home to the corporate site, regardless of the location of the public test server. 

Throughput results may not be valid due to the public server's location on the Internet and fluctuations based on the use of the public server. 

Throughput values are not affected by the choice of split tunneling or Internet access through the VPN. 

Throughput results are unrelated to the Teleworker PC configuration or current PC use.

lsattr

lspv

lsvg

lsresource

 A physical server environment utilizing only RAM storage with no physical disk medium to enhance performance.

 Multiple operating systems sharing the same physical hardware to leverage higher usage.

 A distributed computing environment where many lower cost machines are combined to increase processing power and overall performance.

 A single operating system using multiple physical hardware chassis to leverage higher availability.

 Higher data integrity

 Lower cost of implementation

 Higher redundancy

 Increased performance

 It lets the administrator know which hardware will work with a particular OS.

 It sets the bare minimum hardware requirements for specified software.

 It allows the administrator to verify software compatibility amongst various vendors.

 It verifies that hardware is fit for certain overclocking performance metrics.

From Personalization， modify the screen saver.

From Indexing Options， modify the Advanced options.

From Performance Options， modify the visual effects.

From Performance Options， modify the processor scheduling.

Hardware RAID costs less than software RAID

Hardware RAID is built into the operating system’s software

Hardware RAID has better performance than software RAID

Hardware RAID requires no configuration and software RAID does

An x445 with 2 Xeon DP processors.  Plan on adding 2 more Xeon DP processors next year.

An x445 with 2 Xeon MP processors.  Plan on adding 2 more Xeon MP processors next year.

An x366 with 2 Xeon MP processors.  Plan on adding 2 more Xeon MP processors next year.

An x366 with 2 Xeon DP processors.  Plan on adding 2 more Xeon DP processors next year.

Baseline

Network map

Wire scheme

Asset management

MQT

Trigger

Read Only Cursor

Stored Procedure

Upgrade Advisor

Window Aero

Task Manager

Device Manager