Oracle exams lab exactprep 1z0-497 Questions by Safaa q135 vce pdf

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Exam Name:	Oracle Database 12c Essentials
Exam Code:	1z0-497 Dumps
Vendor:	Oracle	Certification:	Oracle Database 12c Certified Implementation Specialist
Questions:	150 Q&A's	Shared By:	safaa

Question 16

Which two statements are true about the B-tree Index?

Options:

The leaf blocks in the index are doubly linked.

The leaf node stores a bitmap for each key value.

Rows with a NULL value in key columns also have entries in the Index.

The deletion of a row from the table causes a logical deletion in the index leaf block and the space becomes available for a new leaf entry.

Discussion

Question 17

Which two statements about switchover and failover are true?

Options:

A snapshot standby can be the target of a switchover or fast-start failover operation.

Neither a switchover nor a failover is possible to a far sync instance.

For fast-start failover, you must preselect the target standby database that will be used.

You can activate a standby database to test whether it is being updated correctly.

Discussion

Question 18

Which database feature can be used for organizing data when there is a very large amount of data?

Options:

Index

Partitioning

Triggers

Row-level security

Database vault

Discussion

Question 19

Your customer is looking for zero-data-loss failover with maximum data protection and high availability for their primary database. Which two solutions would you recommend to the customer if the distance between the primary and the standby location is more than 300 miles?

Options:

Asynchronous redo transport with Data Guard

Synchronous redo transport with Data Guard

Active Data Guard Far Sync

Data Guard SQL Apply

Discussion

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