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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which statement would you use to remove the population column from the city table?

A) ALTER TABLE city DELETE population;
B) DELETE population FROM city;
C) ALTER TABLE city DROP population;
D) DROP population FROM city;
E) ALTER TABLE city LESS population;

2. You get a maintenance-notification about your MySQL Enterprise Edition in Oracle Cloud Infrastructure (OCI) Compute instance. What is re the implication?

A) You need to agree to the maintenance windows. If not, you are not affected by the outage.
B) Depending on the planned outage, you may not be affected by it. You need to read the maintenance details in the support notice.
C) You can expect an outage of your MySQL OCI instance during the planned time..
D) There are no maintenance operations planned. You need to do them manually.

3. What is true about MySQL Enterprise Transparent Data Encryption (TDE)?

A) Encryption key is stored in a centralized key memory location
B) Tablespace keys are managed manually behind the scenes.
C) Data is encrypted automatically, in real time, after it is written to storage.
D) Enables data-at-rest encryption by encrypting the physical files of the database.

4. You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

A) The table will be checked for errors and repaired.
B) The table will be optimized and replicated.
C) The table statistics will be stored.
D) The table storage space will be reduced.

5. You set up a compressed full backup file from mysqlbackup by using the --compress option for MySQL Database backup. You are required to restore the database and apply the log.
Which two options should you add to the mysqlbackup to achieve the restoration of the database?

A) --uncompress
B) --uncompress-and-apply-log
C) --apply-log-and-copy-back
D) --decompress
E) --copy-back-and-apply-log

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