Oracle 1z0-485 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1z0-485
Exam Name/Title: Oracle Exadata Database Machine 2014 Implementation Essentials
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification

Exam Questions: 71
Updated On: Jul 06, 2026

Question #17

Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack.

A. Remove the doors of the 1/8th rack.
Add an additional Sun Datacenter InfiniBand Switch.
Add the new servers.
Cable the Database Servers in the rack.
Cable the Exadata Storage Servers in the rack.
Close the rack.
Configure the new hardware.

B. Activate all cores by using a software command.
Activate all hard drives and flash drives.
Create the grid disks.
Expand the Oracle ASM diskgroups.
Review the new configuration.

C. Activate all cores by using a software command.
Activate all hard drives and flash drives.

D. Remove the doors of the 1/8th rack.
Add the new servers.
Cable the Database Servers in the rack.
Cable the Exadata Storage Servers in the rack.
Close the rack.

Discussion 0

Correct Answer: B Vote an answer

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Question #18

What are two choices that a customer must make that impact diskgroup creation?

A. What OS will be run?

B. How many databases will run on the cluster?

C. Where will disk backups be written?

D. What is the level of redundancy required?

Discussion 0

Correct Answer: A,D Vote an answer

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Question #19

Which two statements appropriately describe the backup and recovery procedures on Exadata?

A. Cell software backup is automatic and cell recovery is accomplished by using a rescue procedure.

B. Data stored in a database is backed up and restored by using RMAN commands.

C. Data stored in a database is backed up and restored by using CellCLI commands.

D. Cell software backup is performed through CellCLI and cell recovery is accomplished by using a rescue procedure.

E. Database server software backup is automatic and recovery is accomplished by using a rescue procedure.

Discussion 0

Correct Answer: A,B Vote an answer

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Question #20

You are concerned about how to recover from a failed Exadata Storage Server. What is the best way to recover from a storage cell failure when content in both system disks is lost?

A. Be sure that you have a backup by running make_cellboot_usb.sh in /opt/oracle.cellos.

B. Any USB can be plugged in to create a backup.

C. Database Machine Administrators should be prepared by creating a backup using dbserver_backup.sh.

D. Re-imaging the cell is the only option.

E. Use the Exadata Storage Server rescue functionality that Is provided on the CELLBOOT USB flash drive.

F. Database Machine Administrators should be prepared by creating a backup to an NFS file location as described in the owners guide.

Discussion 0

Correct Answer: E Vote an answer

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Question #21

Consider this CellCLI command:
CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=data, size=423G;
Which two statements describe what happens when you execute this command?

A. It creates one 423 GB grid disk on each available cell hard disk.

B. It creates one 423 GB grid disk on the first available cell hard disk.

C. It creates grid disks on the outermost 423 GB that is available on each hard disk.

D. It creates grid disks on the innermost 423 GB that is available on each hard disk.

E. It creates an Exadata Smart Flash Cache on all flash drives.

Discussion 0

Correct Answer: A,C Vote an answer

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Question #22

Which is a best practice for High Availability (HA) in an Exadata environment?

A. Checksums performed on the Exadata Storage Server ensure logical consistency of block content.

B. Due to the different architecture that Exadata has with storage servers, compared to regular Storage Area Network, DB_LOST_WRITE_PROTECT need not be set.

C. Oracle Exadata Storage Server Software HARD checks operate transparently after enabling DB_BLOCK_CHECKSUM on a database.

D. When a standby database is in place, DB_BLOCK_CHECKING is not required and thus not recommended.

E. Stretched RAC is the best alternative for Exadata that combines both HA and DR into one.

Discussion 0

Correct Answer: C Vote an answer

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Question #23

When using IORM, which statement accurately describes when redo log file writes take place?

A. Immediately

B. Based on the resource group of the user

C. Based on the priority of the user

D. Based on the intradatabase resource plan

Discussion 0

Correct Answer: A Vote an answer

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Question #24

How would you execute CellCLI commands and scripts?

A. remotely by connecting to Port 1521 using SSL

B. using SQL*Plus on database nodes

C. directly executing the commands and scripts on the Exadata storage cell

D. by CellCLI commands executed on the database nodes

E. using third party tools after installing the CellCLI RPM plug-in

Discussion 0

Correct Answer: C Vote an answer

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