115.What are the advantages of variable extent size support for large ASM files? (Choose two.)
A. It improves resync operations when the disk comes online after being taken offline for maintenance purposes.
B. It improves performance in the extended cluster configuration by reading from a local copy of an extent.
C. Fewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool.
D. This feature enables faster file opens because of the reduction in the amount of memory that is required to store file extents.
Answer: CD
参考：http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmcon.htm#OSTMG94064
C：只需要较少的区指针就可以描述文件以及只需要较少的内存去管理在共享池中的区映像。
D：此功能可以更快的打开文件，因为需要存储文件区的内存量减少。
A. It improves resync operations when the disk comes online after being taken offline for maintenance purposes.
B. It improves performance in the extended cluster configuration by reading from a local copy of an extent.
C. Fewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool.
D. This feature enables faster file opens because of the reduction in the amount of memory that is required to store file extents.
Answer: CD
参考：http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmcon.htm#OSTMG94064
C：只需要较少的区指针就可以描述文件以及只需要较少的内存去管理在共享池中的区映像。
D：此功能可以更快的打开文件，因为需要存储文件区的内存量减少。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2125713/ ，如需转载，请注明出处，否则将追究法律责任。
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