Users are complaining of slow performance. The iostat comman

第1题：

第2题：

You are the network administrator of a Layer 3 switched network. Users in one VLAN are complaining thataccess to the server VLAN is very slow from time to time. Traffic in the local VLAN works without any issue，and users in other VLANs do not have any complaint to reach the server VLAN. What is most likely thecause of this issue？（）

• A、routing issue
• B、denial-of-service attack
• C、MAC flooding
• D、spanning-tree recalculation
• E、Layer 2 loop
• F、ARP spoofing attack

第3题：

第4题：

Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）

• A、 The iostat can only be run as the root user
• B、 There could be zero percent I/O wait and still be an I/O bottleneck
• C、 Any I/O wait time displayed in output of "iostat" is an indication of severe I/O bottlenecks 
• D、 Running "iostat" without any arguments/parameters is sufficient for resolving I/O bottlenecks

第5题：

A company has acquired another company and is consolidating data centers. During the consolidation， half of the users of a business-critical application lost access. The users who maintained access experienced slow performance.  What is the first action the SAN/storage administrator should take to determine the source of the problem（）

• A、review SAN configuration， connectivity， and zoning
• B、review application parameters for contention or tuning problems
• C、use internal disk monitoring tools to determine the problem source
• D、check the disk parameters in the OS setup on the systems

第6题：

Which of the following is not correct? （）

• A、It is useless to complain.
• B、It is useless complaining.
• C、Complaining is useless.
• D、It is useless of complaining.

第7题：

A 4-way x445 server with 2GB of memory running Windows 2003 Server with Exchange 2003 is performing poorly.  Users are complaining of slow response times when accessing their email.  Which subsystem should be checked first as a potential bottleneck？（）

• A、Processors
• B、Memory subsystem
• C、Storage subsystem
• D、Network connectivity

第8题：

第9题：

If a system administrator wants to show only a disk report for disk2, at two second intervals, what is the correct command to run?（）

• A、 iostat disk1 1 
• B、 iostat -d disk1 2 
• C、 iostat disk2 1 
• D、 iostat -d disk2 2

第10题：

Companycom has just installed a p5 595 with four uncapped LPARs in a shared processor pool. The system and profile settings are still in their default states. One of the LPARs has an application that is consuming all of the available shared processor resources. Users of this application are complaining about response time. Which of the following changes to the slow LPAR would improve response time?（）

• A、Enable SMT
• B、Reduce the weight
• C、Renice the process
• D、Increase the weight