Online Access Free 1Z1-050 Practice Test

Which three statements correctly describe the features of the I/O calibration process? (Choose three.)

• A.It improves the performance of the performance-critical sessions while running.
• B.It can be used to estimate the maximum number of l/Os and maximum latency time for the system.
• C.The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRU
• D.Only one I/O calibration process can run at a time
• E.It automates the resource allocation for the Automated Maintenance Tasks.

Which two are the uses of the ASM metadata backup and restore (AMBR) feature? (Choose two.)

• A.It can be used to recover the damaged ASM disk group along with the data.
• B.It can be used to backup all data on ASM disks.
• C.It can be used to gather information about a preexisting ASM disk group with disk paths, disk name, failure groups, attributes, templates, and alias directory structure.
• D.It can be used to re-create the ASM disk group with its attributes.

Evaluate the following block of code
BEGIN
DBMS_NETWORK_ACL_ADMIN.CREATE_ACL(
acl => lmycompany-com-permissions.xmll1
principal => 'ACCTJvlGR1,
is_grant => TRUE,
privilege => 'connect');
DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL(
acl => 'mycompany-com-permissions.xml',
host => ".mycompany.com');
END;
What is the outcome of the above code?

• A.It produces an error because a fully qualified host name needs to be specified.
• B.It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT privilege but not the RESOLVE privilege.
• C.It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT and RESOLVE privileges
• D.It produces an error because the range of ports associated with the hosts has not been specified.

What is the advantage of setting the ASM-preferred mirror read for the Stretch cluster configuration?

• A.It improves performance by reading from a copy of an extent closest to the node.
• B.It improves resync operations.
• C.This feature enables much faster file opens.
• D.It improves performance as fewer extent pointers are needed in the shared pool.

Which two kinds of failures make the Data Recovery Advisor (DRA) generate a manual checklist? (Choose two.)

• A.failures when no standby database is configured
• B.failures due to loss of connectivity-for example, an unplugged disk cable
• C.failures because a data file is renamed by error
• D.failures that require no archive logs to be applied for recovery