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 #9

Storage indexes are unique to the Exadata Database Machine and their primary goal is to reduce the amount of I/O required to service I/O requests for Exadata Smart Scan. Put the following steps in order:
1.The Exadata cell services software conducts I/O requests on I MO storage regions.
2.cellsrv checks the high and low values, and determines the storage region does not contain any values meeting the predicate.
3.The database is started.
4.Physical I/O to the region is bypassed if the query selection falls outside the high/low storage index storage.
5.A query is issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=1500.
6.A subsequent query is Issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=2234.
7.MYOBJ_STATE'S region index is populated with high and low values for the OBJECT_ID column during the I/O request.

A. 3, 6, 1.7, 2, 5and 4

B. 3, 7, 1, 5, 6, 2, and 4

C. 3. 7, 5, 2, 1, 6, and 4

D. 3,5, 1, 7, 6, 2. and 4

Discussion 0

Correct Answer: D Vote an answer

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Question #10

Which two attributes describe key benefits of the InfiniBand network?

A. All Exadata database servers have a direct path link to each Exadata Storage Server.

B. Expanding from two Full racks to four only requires adding an external InfiniBand switch to be at the top of the fat-tree topology.

C. Each InfiniBand link provides 10 Gigabits of bandwidth.

D. Oracle's interconnect protocol uses direct memory access (DMA) to eliminate buffer copies and reduce CPU use.

E. Cell-to-cell communication uses Reliable Datagram Sockets (RDS) over InfiniBand to achieve low latency.

Discussion 0

Correct Answer: B,D Vote an answer

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Question #11

Which two statements are true about CellCLI?

A. Using a CellCLI command, you can see whether grid disks are being used by ASM or not.

B. Using a CellCLI command, you can change the SNMP subscribers or add multiple SNMP subscribers.

C. With a simple CellCLI command, you can synchronize changes to all the storage cells in the Exadata realm.

D. Using CellCLI, you can stop and start the ASM instances that are using the grid disks on the Exadata storage cell.

E. You cannot use CellCLI to gather the serial numbers of physical disks.

Discussion 0

Correct Answer: A,D Vote an answer

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Question #12

The mpstat output from OS Watcher shows a database node as being 90% idle on an average. What would you do to get a full picture of CPU utilization on the entire Exadata RAC cluster?

A. Average the mpstat id1 output from all the nodes.

B. Ask application users if they have noticed a slowdown in screen response.

C. Look for an increase in batch job servicing times.

D. A & B above

Discussion 0

Correct Answer: A Vote an answer

Question #13

When would be the best time to run an Exadata health check (exachk)?

A. only after a hardware failure

B. monthly and after a hardware failure

C. before and after patching, when advised by Oracle Support, andona regular basis

D. only when advised by Oracle Support

E. after patching, after upgrades, and after backups

F. before patching, before upgrades, before backups, and on a regular basis

Discussion 0

Correct Answer: C Vote an answer

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Question #14

Identify two ways to reduce the risks associated with the software updates that are performed on a production Exadata system.

A. Updating an engineered system has no risk.

B. Patch all systems at once instead of one at a time.

C. Create a system-wide firmware and software snapshot first.

D. Patch on the standby system first by using Data Guard Standby First Patch Apply.

E. Test on an Exadata system that is identical to the production system first.

Discussion 0

Correct Answer: D,E Vote an answer

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Question #15

You are calculating the storage capacity that your customer will require on their ZFS Backup Appliance. Identify the set of factors that will affect this calculation.

A. database size, full/incremental cycle, RPO (Recovery Point Objective), and RTO (Recovery Time Objective)

B. database size, full/incremental cycle, compression, and retention period

C. database size, compression, and backup window

D. full/incremental cycle, retention period, and ZFS Backup Appliance model

E. database size, retention period, RPO (Recovery Point Objective), and compression

Discussion 0

Correct Answer: B Vote an answer

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Question #16

Which two actions are permitted with Exadata Database Machine?

A. installing a second Ethernet switch in the Exadata rack for client access network connectivity

B. configuring a Linux active-active channel bonding on the database servers by using two 10Gigabit Ethernet port

C. replacing the Ethernet switch with an equivalent 1U48-port Gigabit Ethernet switch

D. replacing the Sun Data Center InfiniBand Switch 36-spine switch with an InfiniBand Gateway Switch

E. configuring a Fibre Channel over Ethernet (FCoE) protocol on database servers

Discussion 0

Correct Answer: C,D Vote an answer

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