Download Oracle Database 12c: Installation and Administration.1z0-062.TestKing.2019-12-26.221q.vcex

Vendor: Oracle
Exam Code: 1z0-062
Exam Name: Oracle Database 12c: Installation and Administration
Date: Dec 26, 2019
File Size: 2 MB
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Demo Questions

Question 1
A user establishes a connection to a database instance by using an Oracle Net connection. You want to ensure the following:
  1. The user account must be locked after five unsuccessful login attempts. 
  2. Data read per session must be limited for the user. 
  3. The user cannot have more than three simultaneous sessions. 
  4. The user must have a maximum of 10 minutes session idle time before being logged off automatically. 
How would you accomplish this?
  1. by granting a secure application role to the user
  2. by implementing Database Resource Manager
  3. by using Oracle Label Security options
  4. by assigning a profile to the user
Correct answer: D
Question 2
What happens if a maintenance window closes before a job that collects optimizer statistics completes?
  1. The job is terminated and the gathered statistics are not saved.
  2. The job is terminated but the gathered statistics are not published.
  3. The job continues to run until all statistics are gathered.
  4. The job is terminated and statistics for the remaining objects are collected the next time the maintenance window opens.
Correct answer: D
Explanation:
The stop_on_window_close attribute controls whether the GATHER_STATS_JOB continues when the maintenance window closes. The default setting for the stop_on_window_close attribute is TRUE, causing Scheduler to terminate GATHER_STATS_JOB when the maintenance window closes. The remaining objects are then processed in the next maintenance window. References: https://docs.oracle.com/cd/B19306_01/server.102/b14211/stats.htm#g49431
The stop_on_window_close attribute controls whether the GATHER_STATS_JOB continues when the maintenance window closes. The default setting for the stop_on_window_close attribute is TRUE, causing Scheduler to terminate GATHER_STATS_JOB when the maintenance window closes. The remaining objects are then processed in the next maintenance window. 
References: https://docs.oracle.com/cd/B19306_01/server.102/b14211/stats.htm#g49431
Question 3
Which two statements are true about the logical storage structure of an Oracle database? (Choose two.)
  1. An extent contains data blocks that are always physically contiguous on disk.
  2. An extent can span multiple segments.
  3. Each data block always corresponds to one operating system block.
  4. It is possible to have tablespaces of different block sizes.
  5. A data block is the smallest unit of I/O in data files.
Correct answer: DE
Explanation:
Question 4
Which two statements correctly describe the relationship between data files and logical database structures? (Choose two.)
  1. A segment cannot span data files.
  2. A data file can belong to only one tablespace.
  3. An extent cannot span data files.
  4. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Correct answer: BC
Explanation:
A single extent can never span data files. https://docs.oracle.com/database/121/CNCPT/logical.htm#CNCPT1095
A single extent can never span data files. 
https://docs.oracle.com/database/121/CNCPT/logical.htm#CNCPT1095
Question 5
Which statement is true about the Log Writer process?
  1. It writes when it receives a signal from the checkpoint process (CKPT).
  2. It writes concurrently to all members of multiplexed redo log groups.
  3. It writes after the Database Writer process writes dirty buffers to disk.
  4. It writes when a user commits a transaction.
Correct answer: D
Explanation:
References:http://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm (see log writer process (LGWR))
References:
http://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm (see log writer process (LGWR))
Question 6
The ORCL database is configured to support shared server mode. You want to ensure that a user connecting remotely to the database instance has a one-to-one ratio between client and server processes. 
Which connection method guarantees that this requirement is met?
  1. connecting by using an external naming method
  2. connecting by using the easy connect method
  3. creating a service in the database by using the dbms_service.create_service procedure and using this service for creating a local naming service
  4. connecting by using the local naming method with the server = dedicated parameter set in the tnsnames.ora file for the net service
  5. connecting by using a directory naming method
Correct answer: D
Question 7
Which three statements are true about a job chain? (Choose three.)
  1. It can contain a nested chain of jobs.
  2. It can be used to implement dependency-based scheduling.
  3. It cannot invoke the same program or nested chain in multiple steps in the chain.
  4. It cannot have more than one dependency.
  5. It can be executed using event-based or time-based schedules.
Correct answer: ABE
Explanation:
Question 8
Examine the resources consumed by a database instance whose current Resource Manager plan is displayed. 
  
Which two statements are true? (Choose two.)
  1. An attempt to start a new session by a user belonging to DSS_QUERIES fails with an error.
  2. An attempt to start a new session by a user belonging to OTHER_GROUPS fails with an error.
  3. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to resource management.
  4. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to I/O waits and latch or enqueue contention.
  5. A user belonging to the DSS__QUERIES resource consumer group can create a new session but the session will be queued.
Correct answer: CE
Question 9
Which action takes place when a file checkpoint occurs?
  1. The checkpoint position is advanced in the checkpoint queue.
  2. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by DBWn and the SCN is stored in the control file.
  3. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
  4. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Correct answer: B
Question 10
Which task would you recommend before using the Database Upgrade Assistant (DBUA) to upgrade a single-instance Oracle 11g R2 database to Oracle Database 12c?
  1. shutting down the database instance that is being upgraded
  2. executing the catctl.pl script to run the upgrade processes in parallel
  3. running the Pre-Upgrade Information Tool
  4. copying the listener.ora file to the new ORACLE_HOME
Correct answer: C
Explanation:
References:http://docs.oracle.com/cd/E11882_01/server.112/e23633/upgrade.htm#UPGRD12395
References:
http://docs.oracle.com/cd/E11882_01/server.112/e23633/upgrade.htm#UPGRD12395
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