1z0-043
单选题You have a disk group， DGROUP1， with three disks and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE）； Which statement is true？（）A Wh
题目
When a file is created in DGROUP1 with the template， it would have three-way mirroring.
When a file is created in DGROUP1， the MY_TEMP template becomes the default template.
When a file is created in DGROUP1 with the template， it would have two-way mirroring and file striping.
When a file is created in DGROUP1 with the template， it would have three-way mirroring and file striping.
When a file is created in DGROUP1 with the template， it would have two-way mirroring but no file Striping.
相似问题和答案
第1题：
You are managing Oracle Database 11g with an ASM storage with high redundancy. The following command was issued to drop the disks from the dga disk group after five hours： ALTER DISKGROUP dga OFFLINE DISKS IN FAILGROUP f2 DROP AFTER 5H； Which statement is true in this scenario？（）
- A、 It starts the ASM fast mirror resync.
- B、 All the disks in the dga disk group would be OFFLINE and the DISK_REPAIR_TIME disk attribute would be set to 5 hours.
- C、 It drops all disk paths from the dga disk group.
- D、 All the disks in the dga disk group in failure group f2 would be OFFLINE and the DISK_REPAIR_TIME disk attribute would be set to 5 hours.
正确答案:D
第2题：
In your Automatic Storage Management （ASM） instance， one of the nonempty disk groups， DGROUP1， is no longer required and you want this disk group to be removed. You execute the following command to achieve this objective： DROP DISKGROUP dgroup1 EXCLUDING CONTENTS； What would be the result of this command？（）
- A、 This command would result in an error because the disk group is not empty.
- B、 The command would distribute the contents of the specified disk group among all other disk groups and then drop the specified disk group.
- C、 The command would result in the contents being moved to the parent disk group and dropping of the disk group.
- D、 The command would result in the disk group being marked as INVALID because it cannot be dropped.
- E、 The command would drop the disk group， ignoring the EXCLUDING CONTENTS option.
正确答案:A
第3题：
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management (ASM) disks
第4题：
You are managing an Oracle Database 11g ASM instance having three disks in a disk group with ASM compatibility attribute set to 11.1.0 and redundancy set to high. One of the disks in the disk group becomes unavailable because of power failure. Which statements will be true in this scenario？（）
- A、 The disk is immediately dropped from the disk group.
- B、 The ASM tracks the extents that are modified during the outa
- C、 The ASM migrates the extents from the unavailable disk to the remaining disks.
- D、 The disk automatically goes offline.
正确答案:B,D
第5题：
You are an Oracle DBA responsible for an ASM instance. The disk controller on your system fails. You suspect that the disk itself is okay. You know it will take 24 hours to replace the controller and you don’t want to have to rebuild the disks from scratch. What do you do？（）
- A、 Take the whole disk group offline and wait for the controller card to be installed. Once it’s installed，bring the disk group online again.
- B、 Change the ASM parameter ASM_PREFERRED_READ_FAILURE_GROUPS to indicate that you want to read from the non-failed disk. Once the disk controller is replaced，reset the parameter to its original value.
- C、 You have no choice but to rebuild the disk. Drop the disk from the disk group and wait for the controller to be replaced. Once the controller is replaced， add the disk back into the disk group and allow ASM to rebuild it.
- D、 If you are using any setting other than REDUNDANCY EXTERNAL for your disk group，you will have to recover any data on that disk from a backup. The database will be unavailable until you can correct the problem and perform recovery.
- E、 Change the attribute DISK_REPAIR_TIME on the disk group to a time greater than 24 hours.
正确答案:E
第6题：
If you use ALTER DISKGROUP ... ADD DISK and specify a wildcard for the discovery string， what happens to disks that are already a part of the same or another disk group？（）
- A、 The command fails unless you specify the FORCE option.
- B、 The command fails unless you specify the REUSE option.
- C、 The command must be reissued with a more specific discovery string.
- D、 The other disks， already part of the disk group，are ignored.
正确答案:D
第7题：
Examine the following ALTER command: SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS; What is the purpose of the command?（）
- A、It cancels all pending disk drops within the disk group.
- B、It restores disks that are being dropped as the result of a DROP DISKGROUP operation
- C、It mounts disks in the disk group for which the drop-disk operation has already been co pleted
- D、It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
- E、It adds previously dropped disks back into the disk group
正确答案:A
第8题：
You are the network administrator for Ezonexam. You are installing Windows 2000 Server on a new computer by using the Windows 2000 Server compact disk. The computer has five 18-GB hard disks Dick0, Disk1, Disk2, Disk3, and Disk4. The disks do not have any partitions defined.
You want to use as much space on Disk0 as possible for the partition on which Windows 2000 Server is installed. You want the disk on which you install Windows 2000 Server to be fault tolerant. You also want as much disk space as possible across the other disks to be available for data storage and to be fault tolerant.
What should you do? (Each correct answer presents part of the solution. Choose three)
A. Install Windows 2000 Server on a 4-GB NTFS partition on Disk 0. Configure the five disks as dynamic disks.
B. Install Windows 2000 Server on a 18-GB NTFS partition on Disk 0. Configure the five disks as dynamic disks.
C. Create a RAID-5 volume using Disk2, Disk3, and Disk4.
D. Create a stripped volume using Disk2, Disk3, and Disk4.
E. Create a RAID-5 volume using all disks.
F. Create a stripped volume using all disks.
G. Select the volume on Disk0 and add a mirror using Disk1.
B,C,G 解析：Explanation: RAID-5 volume is where data is written to 3 to 32 physical disks at the same rate, and is interlaced with parity to provide fault tolerance for a single disk failure. Good read performance; good utilization of disk capacity; expensive in terms of processor utilization and write performance as parity must be calculated during write operations.
Only Windows 2000 supports dynamic storage. To support dynamic storage, a single partition is created that includes the entire disk. A disk that you initialize for dynamic storage is a dynamic disk. Dynamic disks are divided into volumes, which can consist of a portion or portions of one or more physical disks. A dynamic disk can contain simple volumes, spanned volumes, striped volumes (RAID-0), mirrored volumes (RAID-1), and striped with parity volumes (RAID-5). You create a dynamic disk by upgrading a basic disk. A Mirrored volume is where two disks contain identical copies of data. The only software RAID supported on the system volume. Good read and write performance; excellent fault tolerance; but costly in terms of disk utilization, because 50 percent of the volume's potential capacity is used for data redundancy.
Incorrect answers:
A: It is not necessary to install Windows 2000 Server on a 4-GB NTFS partition on Disk0. Disk0 consists of 18-GB.
D: Striped volume is where data is written to 2 to 32 physical disks at the same rate. It offers maximum performance and capacity but no fault tolerance.
E: The main disadvantage of a RAID-5 volume is that once a drive fails, system performance suffers until you rebuild the RAID-5 volume. This is because the parity information must be recalculated through memory to reconstruct the missing drive. If more than one drive fails, the RAID-5 volume becomes inaccessible. This does not bode well for fault tolerance as is required in this question.
F: Striped volumes do not provide fault tolerance.
第9题：
You are the Database Administrator for WonderWeb， which has recently acquired a media company TXGlobal. You have been assigned the task to migrate all the database applications of TXGlobal to the database server of WonderWeb. To accommodate more database applications， you need to add disks to the existing disk group. Whenever you add or remove disks from the disk group， Automatic Storage Management （ASM） rebalancing distributes the data evenly across all the disks of the disk group. Which background process performs this actual rebalancing activity， resulting in the movement of data extents in the disk groups？（）
- A、 ASMB
- B、 ARBn
- C、 RBAL in the ASM instance
- D、 RBAL in the database instance
正确答案:B
第10题：
Examine the following ALTER command: SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS; What is the purpose of the command?（）
- A、It cancels all pending disk drops within the disk group
- B、It restores disks that are being dropped as the result of a DROP DISKGROUP operation
- C、It mounts disks in the disk group for which the drop-disk operation has already been completed
- D、It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
- E、It adds previously dropped disks back into the disk group
正确答案:A