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Oracle 1Z0-902 Sample Questions:
01. Immediately after a new Exadata Database Machine is deployed, the team wants a documented, best-practice compliance baseline of the whole machine to hand over with the system.
Which tool produces this baseline?
a) exachk
b) imageinfo
c) checkip.sh
d) applyElasticConfig.sh
02. Before running the deployment, an implementer wants to confirm that the planned host names and IP addresses resolve correctly in DNS and do not conflict with existing addresses.
Which utility is designed for this pre-deployment check?
a) imagehistory
b) applyElasticConfig.sh
c) patchmgr
d) checkip.sh
03. While reviewing storage-cell metrics, an administrator sees metric names that begin with several different prefixes and needs to identify which object each family describes.
Which prefix identifies Flash Cache metrics?
a) GD_
b) CD_
c) FC_
d) DB_
04. Redo log write latency spikes are hurting OLTP commit times on an Exadata system, and you want to use flash to smooth them.
What should you configure?
a) Flash Cache Write-Back, set with ALTER CELL flashCacheMode=writeback.
b) Smart Flash Log, created on the cells with CREATE FLASHLOG.
c) Smart Scan offload applied to the redo log reads.
d) A larger Storage Index built over the log disk group.
05. Both system disks in a storage cell have failed, so the cell will not boot, but its data disks are intact and hold ASM griddisks that are mirrored elsewhere.
What is the correct recovery approach?
a) Replace the whole cell and run the replace_cell command from CellCLI to rejoin it to the cluster.
b) Run the ALTER CELL VALIDATE CONFIGURATION check to rebuild the lost system area from the data disks.
c) Re-image the cell with OEDA as a brand-new cell, which reformats and reinitializes all of its disks.
d) Boot the cell from the CELLBOOT rescue image and run Cell Software Rescue, keeping the data disks intact.
06. After a disk swap on one cell, the celldisk and its griddisks were not recreated automatically, and the corresponding ASM disks remain missing.
What is the correct remediation?
a) Drop and then recreate every single griddisk on the whole cell after any disk swap, always as routine.
b) Recreate the celldisk and its griddisks in CellCLI to match the peer cells, then let ASM add them back.
c) Recreate the griddisks from a database server, using DBMCLI to run the appropriate commands over there.
d) Restore the cell's original griddisk layout directly from the CELLBOOT rescue image after the disk swap.
07. During deployment, the Exadata components must resolve hostnames and keep their clocks synchronized using the customer's existing infrastructure.
Which pair of corporate services must the Exadata integrate with for this?
a) SMTP and SNMP servers
b) LDAP and Kerberos servers
c) DNS and NTP servers
d) DHCP and TFTP servers
08. When gathering the site inputs OEDA needs for a new deployment, the implementer must define supporting infrastructure services so the nodes have consistent time and name resolution.
Which two services must be defined?
(Choose two.)
a) NTP servers for time synchronization
b) DNS name servers
c) A DHCP address-assignment server for the RDMA fabric
d) A WINS server for cell name registration
e) A RADIUS authentication server for the cells
09. One storage cell in a running cluster needs a brief maintenance shutdown. The administrator must guarantee the disk groups stay mounted and no data becomes unavailable while the cell is down.
Which two steps confirm it is safe and prepare the cell?
(Choose two.)
a) Set IORM to off on the cell so the shutdown is not throttled by I/O prioritization.
b) Inactivate the cell's griddisks with ALTER GRIDDISK ALL INACTIVE so ASM offlines rather than drops them.
c) Drop the grid disks with ALTER DISKGROUP ... DROP DISK, and rebalance, first.
d) Confirm amActiveStatus reads OFFLINE for every griddisk, then shut the cell down.
e) Run CellCLI LIST GRIDDISK ATTRIBUTES name,asmdeactivationoutcome and confirm every griddisk returns Yes.
10. An ASM cluster already has ASM-Scoped Security configured against a set of storage cells.
What does adding Database-Scoped Security provide beyond ASM-Scoped Security?
a) It encrypts the grid-disk contents at rest using the cluster's shared security key
b) It replaces cell OS-user authentication with per-database certificate-based login
c) It restricts individual databases within the secured cluster to a subset of grid disks
d) It opens every grid disk in the cell to any ASM instance that presents a valid key
Answers:
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Question: 01
Answer: a
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Question: 02
Answer: d
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Question: 03
Answer: c
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Question: 04
Answer: b
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Question: 05
Answer: d
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Question: 06
Answer: b
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Question: 07
Answer: c
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Question: 08
Answer: a, b
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Question: 09
Answer: b, e
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Question: 10
Answer: c
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