Oracle Oracle Certifications 1z0-338 Questions & Answers

• Question 21:

  Consider the following software changes that are performed manually on a Linux server:

  1.

  Changes for Linux kernel firewall configuration

  2.

  Changes for custom performance monitoring tools

  3.

  Changes for security scan tools

  4.

  Changes for Linux system performance optimization

  Which of the software changes listed are permitted on Exadata Storage Servers?

  A. only 3

  B. 1, 2, 3, and 4

  C. none

  D. only 2

  E. only 1 and 2

  F. only 2 and 3

  Correct Answer: E

• Question 22:

  Which three statements are true about the Enterprise Manager setup in Exadata? (Choose three.)

  A. The Exadata Plug-In is automatically installed with EM Agent 12cR1.

  B. When installing Enterprise Manager after a Platinum Services installation, you should reuse the existing EM Agent.

  C. InfiniBand Switches are monitored remotely.

  D. Enterprise Manager creates a schematic of all servers and their health in the Exadata rack.

  E. Enterprise Manager shows the health of individual ports on the InfiniBand Switches.

  Correct Answer: CDE

• Question 23:

  What type of SRs does the ASR Manager generate for Exadata?

  A. operating system components

  B. software assets

  C. hardware assets

  D. data entry errors

  E. backup and restore failures

  Correct Answer: B

• Question 24:

  Consider the following command:

  ./patchmgr -cells dm01 -patch -rolling

  Which two actions does this command perform? (Choose two.)

  A. upgrades one or more Exadata Storage Servers simultaneously

  B. upgrades one or more Exadata Storage Servers listed in the dm01 file

  C. upgrades one or more Exadata Storage Servers, one at a time

  D. rolls back one or more Exadata Storage Servers to the previous release

  E. upgrades one or more Exadata Storage Servers and InfiniBand Switches

  F. upgrades an Exadata Storage Server named dm01

  Correct Answer: AF

• Question 25:

  Which two statements are true about CellCLI? (Choose two.)

  A. CellCLI can be used to back up the Exadata storage cells or make a bootable disk to restore the cell.

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

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

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

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

  Correct Answer: DE

• Question 26:

  When performing the Oracle recommended bonding of NETl/NETZ or NET4/NET5, what other step should be completed in order to ensure connectivity, in case of a network hardware outage?

  A. Each link should terminate at a separate switch to provide network redundancy.

  B. NET0/NET3 should also be bonded and linked to a separate network.

  C. The MTU should be set to 7000 to improve performance.

  D. Jumbo Frames should be disabled.

  E. STP should be disabled to prevent routing loops.

  Correct Answer: A

• Question 27:

  Which user can create administrator accounts and change the administrator password in Oracle Exadata Cloud Service?

  A. system

  B. Account Administrator

  C. Identity Domain Administrator

  D. sys

  E. Service Instance Administrator

  Correct Answer: C

  Reference: https://docs.oracle.com/en/cloud/paas/exadata-cloud/csexa/service-roles-and-users.html

• Question 28:

  What are the three Flash Cache prioritization levels that can be set via the CELL_FLASH_CACHE command? (Choose three.)

  A. PINNED

  B. LOG

  C. NONE

  D. KEEP

  E. DEFAULT

  Correct Answer: CDE

  Reference: https://www.pythian.com/blog/whats-in-your-exadata-smart-flash-cache/

• Question 29:

  Which CellCLI command is used to conclude that a storage server can be taken offline without impacting database availability?

  A. LIST GRIDDISK ATTRIBUTES name, status;

  B. LIST CELLDISK ATTRIBUTES name, raidLevel, asmModeStatus;

  C. LIST CELLDISK ATTRIBUTES name, raidLevel

  D. LIST GRIDDISK ATTRIBUTES name, asmDeactivationOutcome;

  E. LIST CELL ATTRIBUTES cellsrvStatus, flashCacheMode;

  Correct Answer: D

  Explanation: ASMDeactivationOutcome recall that grid disks can be deactivated, which is effectively taking them offline. Since ASM mirroring ensures that the data is located on another disk, making this disk offline does not lose data. However, if the mirror is offline, or is not present, then making this grid disk offline will result in loss of data. This attribute shows whether the grid disk can be deactivated without loss of data. A value of "Yes" indicates you can deactivate this grid disk without data loss. CellCLI> list griddisk attributes name, ASMDeactivationOutcome, ASMModeStatus DBFS_DG_CD_02_cell01 Yes ONLINE DBFS_DG_CD_03_cell01 Yes ONLINE DBFS_DG_CD_04_cell01 Yes ONLINE

• Question 30:

  Which statement is true about Enterprise Manager 12c for Exadata?

  A. EM Agents are installed on each database and storage node.

  B. EM Agents should not be installed on Exadata. Remote monitoring is the best practice.

  C. EM Agents can communicate to storage cells via SSH.

  D. The Exadata Plug-In for monitoring switches is installed in each EM Agent.

  E. Storage cells communicate directly to the EM Management Server via SNMP and/or SMTP.

  Correct Answer: C

  Explanation: Open SSH Ports The Enterprise Manager Cloud Control 12c Agents require ssh access to the Exadata Database Machine components they monitor. As the Agents will run on the compute nodes the ssh ports, 22, on each of the storage cells, ILOMs, PDUs, KVMs, InfiniBand switches, and Cisco switch will need to be opened for each of the compute nodes.