单项选择题 A user is reporting that access to a file server is much slower than it has been. The system administrator completes a test of the server using a system monitoring tool and compares it to the previously taken baseline. The comparison shows that there are no significant changes in the use of system resources. Which of the following actions should be taken to resolve this user problem?（）

单项选择题 WhichofthefollowingstorageprotocolswouldbesuitablefortransportacrossanIPnetwork？（）

单项选择题 A new storage array must be configured for a database server. This array will store transaction logs that are always being written.  Which of the following RAID solutions would provide fault tolerance and fast write operations without the use of parity？ （）