Download Oracle.1z0-068.TestKing.2019-12-23.90q.vcex

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Exam Oracle Database 12c: RAC and Grid Infrastructure Administration
Number 1z0-068
File Name Oracle.1z0-068.TestKing.2019-12-23.90q.vcex
Size 750 KB
Posted Dec 23, 2019
Download Oracle.1z0-068.TestKing.2019-12-23.90q.vcex

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Demo Questions

Question 1

Which three statements are true regarding Flex ASM on a four-node cluster consisting of three hub nodes and a leaf node?


  1. An ASM instance and database instances can coexist on the same hub node.
  2. A database instance on a hub node can be a client of an ASM instance running on any leaf node.
  3. A database instance on a hub node can be a client of an ASM instance running on any hub node.
  4. A database instance on a leaf node can be a client of an ASM instance running on any hub node.
  5. A database instance on a hub node uses an ASM instance as an I/O server when requesting I/O to diskgroups.
  6. ASM Cluster File System (ASFS) can only be deployed on hub nodes.
Correct answer: ACF



Question 2

Which two statements are true about Flex ASM in a Flex Cluster?


  1. Oracle databases from releases older than 12c cannot use Flex ASM.
  2. ACFS may only be configured on a hub node running an ASM instance.
  3. Instances of ASM-based databases on hosts that have no ASM instance running, require Flex ASM.
  4. Flex ASM requires that I/Os requests be sent through an ASM Proxy Instance, regardless of database and ASM instance placement in a cluster.
  5. Hub nodes with connections from multiple leaf nodes must run an ASM instance.
Correct answer: AC



Question 3

A directory +DATA/ORCL/DATAFILE/USERS exists in ASM. 
USERS is a user created directory; ORCL and DATAFILE are system generated directories. 
Which two statements are true about user-created directories?


  1. You can create subdirectories under the USERS directory.
  2. You cannot rename a user-created subdirectory.
  3. You cannot drop a directory containing aliases unless you delete the aliases first.
  4. You cannot create a user-defined directory at the root (+) level.
  5. You can create a nested subdirectory /USER1/2014 under USERS with a single CREATE DIRECTORY command even if directory USER1 doesn’t exist.
Correct answer: AC



Question 4

Which three components are integral parts of High Availability NFS (HANFS)?


  1. Application VIP
  2. DHCP
  3. ExportFS
  4. HAVIP
  5. NFS
  6. HAIP
Correct answer: CDE
Explanation:
CD: In addition to ACFS/ADVM and ASM, HANFS also relies on new Oracle 12.1 Clusterware (CRS) resources, namely the HAVIP and the ExportFS.DE: High Availability Network File Storage (NFS) for Oracle Grid Infrastructure provides uninterrupted service of NFS V2/V3/V4 exported paths by exposing NFS exports on Highly Available Virtual IPs (HAVIP) and using Oracle Clusterware agents to ensure that the HAVIPs and NFS exports are always online.References: https://docs.oracle.com/database/121/OSTMG/GUID-4D7A5911-8FA6-47DC-98BB-593B2C90D43E.htm#OSTMG95489
CD: In addition to ACFS/ADVM and ASM, HANFS also relies on new Oracle 12.1 Clusterware (CRS) resources, namely the HAVIP and the ExportFS.
DE: High Availability Network File Storage (NFS) for Oracle Grid Infrastructure provides uninterrupted service of NFS V2/V3/V4 exported paths by exposing NFS exports on Highly Available Virtual IPs (HAVIP) and using Oracle Clusterware agents to ensure that the HAVIPs and NFS exports are always online.
References: https://docs.oracle.com/database/121/OSTMG/GUID-4D7A5911-8FA6-47DC-98BB-593B2C90D43E.htm#OSTMG95489



Question 5

Which three statements are true about ASM Cloud File System (ACFS) auditing?


  1. Audit information gathered by each cluster node can be consolidated into the unified ACFS audit trail.
  2. acfsutil audit archive must be used to archive audit files that are larger than 10 MB.
  3. acfsutil audit init must be run by a system administrator.
  4. acfsutil audit purge can be run by an audit manager.
  5. acfsutil audit read marks audit files to indicate that it is safe to purge them.
Correct answer: CDE
Explanation:
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
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 6

Which three statements are true regarding ACFS snapshots in Oracle 12c ASM?


  1. They are contained in a directory on the same volume as their parent file system.
  2. All ACFS snapshot operations for all filesystem are serialized clusterwide.
  3. You can create a snapshot from an existing snapshot.
  4. They can be administered using ASMCMD.
  5. They can only be accessed when the file system is mounted.
  6. They are always point-in-time copies of the parent file system.
Correct answer: BCE
Explanation:
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#OSTMG33000http://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).
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 7

Which two statements are true about initialization parameters for Clustered ASM instances?


  1. A change to ASM_DISKSTRING requires a restart of all ASM instances for the change to take effect.
  2. ASM_POWER_LIMIT controls the number of RDBMS instances that can access a disk group while it is being rebalanced.
  3. The ASM_DISKGROUPS parameter is optional.
  4. The default value of INSTANT_TYPE is ASM.
  5. The maximum value of ASM_POWER_LIMIT is 1024.
Correct answer: CE
Explanation:
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
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



Question 8

Which three statements are true about ASM Cloud File System (ACFS) encryption?


  1. A copy of an encrypted file is not encrypted unless it is created in an encrypted directory.
  2. acfsutil encr init is used to establish role separation between encryption managers and encryption auditors.
  3. acfsutil encr off can be run by an encryption manager who may not have system administrator privileges.
  4. acfsutil encr on can be used to specify the encryption key length for a directory or file.
  5. An ACFS snapshot can be ACFS encrypted.
Correct answer: ADE
Explanation:
acfsutil encr on –k key_length specifies the encryption key length for a directory or file. Incorrect Answers:B: The acfsutil encr init command creates storage for encryption keys.C: Only an administrator can run the acfsutil encr off command on an Oracle ACFS file system.References: https://docs.oracle.com/cd/E11882_01/server.112/e18951/asmfs_util009.htm#OSTMG94010
acfsutil encr on –k key_length specifies the encryption key length for a directory or file. 
Incorrect Answers:
B: The acfsutil encr init command creates storage for encryption keys.
C: Only an administrator can run the acfsutil encr off command on an Oracle ACFS file system.
References: https://docs.oracle.com/cd/E11882_01/server.112/e18951/asmfs_util009.htm#OSTMG94010



Question 9

You support a three-instance, policy-managed, multitenant RAC database CDB1 with two PDBs PDB_1 and PDB_2. 
It runs on an eight-node cluster and serverpool prod_pool has three servers. 
Examine these commands executed on HOST01:
$ srvctl add service –db CDB1 –pdb PDB_1 –service HR –serverpool prod_pool 
$ srvctl start service –db CDB1 –service HR 
$ srvctl stop service –db CDB1 –service HR 
Which two statements are true?


  1. HR is uniformly managed across all instances in prod_pool.
  2. srvctl stop service only closes PDB_1 in the instance on HOST01.
  3. srvctl stop service closes PDB_1 on all CDB1 instances.
  4. srvctl stop service prevents logins for HR only to CDB1 on HOST01.
  5. srvctl stop service prevents logins to any instance of CDB1 using service HR.
  6. HR is available on a single instance of prod_pool.
Correct answer: AE



Question 10

Which three statements are true about the services created when the DBCA is used to create a RAC database?


  1. They can be policy managed for a multitenant database.
  2. Singleton services are not permitted for multitenant databases.
  3. A server pool must be created with SRVCTL before creating a policy-managed RAC database that uses that server pool for a service.
  4. Policy-managed services specified for a database allow the creation of a new server pool using DBCA.
  5. They can be administrator managed for a multitenant database.
Correct answer: ADE
Explanation:
Because policy-managed configuration was selected, the server pool to host the new CDB must be defined. Choose between using an existing server pool or creating a new one and specifying the detail of the new server pool to be used by the CDB. Policy-managed deployments facilitate consolidation. In the case of schema consolidation, where multiple applications are being hosted in a single database (CDB) separated into PDBs, since server pools determine which services run together or separately, you can configure and maintain required affinity or isolation of PDB services. Managing a policy-managed database requires less configuration and reconfiguration steps than an administrator-managed one with respect to creation, sizing, patching, and load balancing. Also, because any server in the server pools within the cluster can run any of the CDB instances and PDB services, you do not have to create and maintain CDB instance-to node-name mappings and PDB service-to-node-name mappings.
Because policy-managed configuration was selected, the server pool to host the new CDB must be defined. Choose between using an existing server pool or creating a new one and specifying the detail of the new server pool to be used by the CDB. 
Policy-managed deployments facilitate consolidation. In the case of schema consolidation, where multiple applications are being hosted in a single database (CDB) separated into PDBs, since server pools determine which services run together or separately, you can configure and maintain required affinity or isolation of PDB services. 
Managing a policy-managed database requires less configuration and reconfiguration steps than an administrator-managed one with respect to creation, sizing, patching, and load balancing. Also, because any server in the server pools within the cluster can run any of the CDB instances and PDB services, you do not have to create and maintain CDB instance-to node-name mappings and PDB service-to-node-name mappings.









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