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Oracle 1z0-068 Exam Practice Questions (P. 3)

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Question #11
Examine this command:
SQl> CREATE DISKGROUP RECO HIGH REDUNDANCY:

FAILGROUP fgrpl1 DISK -
/dev/disk1 NAME disk1,
/dev/disk2 NAME disk2,
/dev/disk3 NAME disk3,

FAILGROUP fgrpl2 DISK -
/dev/disk4 NAME disk4,
/dev/disk5 NAME disk5,
/dev/disk6 NAME disk6,

FAILGROUP fgrpl3 DISK -
/dev/disk7 NAME disk7,
/dev/disk8 NAME disk8,
/dev/disk9 NAME disk9,
ATTRIBUTE au_size=4M,
compatible.asm = 12.1,
compatible.rdbms = 12.1,
compatible.advm = 12.1,
content_type = recovery;
Which two statements are true about this disk group?
  1. A
    File created in it have three copies for each allocation unit.
  2. B
    Any database instance with the COMPATIBLE parameter 10.1 and higher can use it.
  3. C
    The Compatible attribute values of the disk group can be changed to lower values.
  4. D
    Files created using a template with the redundancy attributes set to MIRROR will have three-way Mirroring.
  5. E
    The RECO diskgroup may only be used for the FRA.
  6. F
    Files created using a template with the redundancy attribute set to HIGH will have three-way mirroring.

Correct Answer:
AF
For Oracle ASM to mirror files, specify the redundancy level as NORMAL REDUNDANCY (2-way mirroring by default for most file types) or HIGH REDUNDANCY
(3-way mirroring for all files).
Note:
When a file is created, redundancy and striping attributes are set for that file based on an explicitly named template or the system template that is the default template for the file type.
Incorrect Answers:
B: Compatible.rdbms is set to 12.1, not to 10.1.
C: The compatible attributes cannot be reversed.
D: With the MIRROR redundancy attribute, the file is written to a disk in one failure group, a mirrored copy of the file is written to a disk in another failure group.
E: FRA (Flash Recovery Area) is not referenced in the creation of the diskgroup.
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_5008.htm

Question #12
Which three statements are true about node listeners in a Grid Infrastructure Cluster using Flex ASM?
  1. A
    They run from the Grid Infrastructure home by default.
  2. B
    They listen only for database instances on the same node.
  3. C
    They listen only for the ASM instance on the same node.
  4. D
    There only can be one node listener per node.
  5. E
    They listen on behalf on any ASM instance and all database instances on the same node.

Correct Answer:
ADE

Question #13
Which three statements are true about ASM Cloud File System (ACFS) auditing?
  1. A
    Audit information gathered by each cluster node can be consolidated into the unified ACFS audit trail.
  2. B
    acfsutil audit archive must be used to archive audit files that are larger than 10MB.
  3. C
    acfsutil audit init must be run by a system administrator.
  4. D
    acfsutil audit purge can be run by an audit manager.
  5. E
    acfsutil audit read marks audit files to indicate that it is safe to purge them.

Correct Answer:
CDE
C: The acfsutil audit init command must be run by the system administrator before enabling auditing for any of the audit sources on a file system.
D: Only an audit manager can run the acfsutil audit purge command.
E: acfsutil audit read marks the audit trail to indicate to the audit manager that the log archive file for the current node has been reviewed, backed up as necessary, and is safe to purge.
Incorrect Answers:
B: acfsutil audit archive does not address file size.
References:
https://docs.oracle.com/database/121/OSTMG/GUID-DF1A88B0-E86C-4ABB-BDFD-B06DA8D4CBEC.htm#OSTMG90000

Question #14
Which three statements are true regarding ACFS snapshots in Oracle 12c ASM?
  1. A
    They are contained in a directory on the same volume as their parent file system.
  2. B
    All ACFS snapshot operations for all filesystem are serialized clusterwide.
  3. C
    You can create a snapshot from an existing snapshot.
  4. D
    They can be administered using ASMCMD.
  5. E
    They can only be accessed when the file system is mounted.
  6. F
    They are always point-in-time copies of the parent file system.

Correct Answer:
BCE
All Oracle ACFS snapshot operations are serialized clusterwide in the kernel.
You chose to create a snapshot image on an existing snapshot group, select a snapshot group from the existing snapshot group table (make sure you select a snapshot group that has not reached its maximum limit of snapshot images).
Before you can access the files on a file system, you need to mount the file system.
References:
https://docs.oracle.com/database/121/OSTMG/GUID-5A3EF695-A795-4FEA-8BE2-AF657BD2238C.htm#OSTMG33000 http://mysupport.netapp.com/NOW/public/eseries/amw/index.html#page/SANtricity_v11.20_Array_Management_Window_Help/create_PIT_image.html
(Creating
a Snapshot image 3rd point, 1st line).
https://docs.oracle.com/cd/E19455-01/805-7228/6j6q7ueup/index.html
(1st paragraph, 1st line).

Question #15
Which two statements are true about initialization parameters for Clustered ASM instances?
  1. A
    A change to ASM_DISKSTRING requires a restart of all ASM instances for the change to take effect.
  2. B
    ASM_POWER_LIMIT controls the number of RDBMS instances that can access a disk group while it is being rebalanced.
  3. C
    The ASM_DISKGROUP parameter is optional.
  4. D
    The default value of INSTANT_TYPE is ASM.
  5. E
    The maximum value of ASM_POWER_LIMIT is 1024.

Correct Answer:
CE
C: The default value of the ASM_DISKGROUPS parameter is a NULL string. If the parameter value is NULL or is not specified, then ASM does not mount any disk groups.
E: The ASM_POWER_LIMIT initialization parameter specifies the default power for disk rebalancing in a disk group. The range of values is 0 to 1024.
Incorrect Answers:
B: The ASM_POWER_LIMIT initialization parameter specifies the default power for disk rebalancing in a disk group. The range of values is 0 to 1024.
D: The default value of INSTANT_TYPE is RDBMS.
Reference:
https://docs.oracle.com/cd/E11882_01/server.112/e18951/asminst.htm#BHCEHJGA

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