By Exam Number: 1Z0-499
Exam Title: Oracle ZFS Storage Appliance 2017 Implementation Essentials
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Oracle ZFS Storage Appliance 2017 Certified Implementation Specialist
Duration: 120
Number of Questions: 70
Passing Score: 68%
Validated Against: This exam has been validated against ZS5-2 and ZS5-4
Format: Multiple Choice
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QUESTION 1
You want to configure a LUN on a ZFS Storage Appliance by using the browser user interface (BUI). In which two ways can you configure multiple initiator groups per LUN?
A. Go to Configuration > Storage. Click the plus sign next to available Pools. Enter a new pool name and click APPLY.
B. Go to Shares > LUN > Edit> Protocols. Edit the initiator group LUN number, and select multiple initiator groups to the given LUN.
C. Go to Shares > LUNs. Click the plus sign to create a new LUN. Then select multiple initiator group(s) by pressing the Ctrl key.
D. Go to Configuration > SAN > Fibre Channel. Click the plus sign to create a new initiator. Then enter the World Wide Name (WWN) of the FC Initiator.
Answer: B,C
Explanation:
To create a LUN, on the Shares page, click LUN.
Click the image:Add item add icon and associate the new LUN with target or initiator groups you created already using the Target Group and Initiator Groups menu.
QUESTION 2
Which type of devices can be tuned using the synchronous write bias properly by selecting values of either latency or throughput?
A. block devices
B. quantum devices
C. log devices
D. cache devices
Answer: C
Explanation:
The Synchronous Write Bias setting controls the behavior when servicing synchronous writes. By default, the system optimizes synchronous writes for latency, which leverages the log devices to provide fast response times. In a system with multiple disjointed filesystems, this can cause contention on the log devices that can increase latency across all consumers. Even with multiple filesystems requesting synchronous semantics, it may be the case that some filesystems are more latency-sensitive than others.
QUESTION 3
When an operation lacks sufficient disk space, which three configurations can make available on a ZFS Storage Appliance?
A. thin provisioning
B. hybrid columnar compression
C. deduplication
D. hybrid storage pool
E. Dtrace Analytics
Answer: A,B,C
Explanation:
Thin Provisioned
Controls whether space is reserved for the volume. This property is only valid for LUNs. By default, a LUN reserves exactly enough space to completely fill the volume. This ensures that clients will not get out-of-space errors at inopportune times. This property allows the volume size to exceed the amount of available space. When set, the LUN will consume only the space that has been written to the LUN.
Hybrid Columnar Compression is an Oracle Database compression technology which enables the highest levels of data compression and provides enterprises with cost savings and performance improvements due to reduced I/O. Hybrid Columnar Compression can be enabled on Oracle Databases residing on dNFS shares without ASM on an Oracle ZFS Storage Appliance beginning with Oracle Database Enterprise Edition 11.2.0.3. If your data does contain duplicates, enabling Data Deduplication will both save space by storing only one copy of a given block regardless of how many times it occurs.
QUESTION 4
After you set up a network connection between a host and ZFS Storage Appliance, the connection is set to half duplex.
What are two possible causes of this problem?
A. Multiple IP addresses are linked to the host.
B. There are duplicate IP addresses on the same network.
C. There is a broken cable or NIC port.
D. The network switch is not set to auto-negotiation.
Answer: A,D
Explanation:
D: When a server boots, the network card will negotiate with the network switch how to communicate. Various settings such as speed and duplex are often part of the auto-negotiation protocol. Occasionally, a server will not negotiate with the network switch the highest possible throughput. The duplex setting may improperly negotiate to half, which could result in collisions and errors, but this can be resolved through manually setting the port characteristics.
QUESTION 5
Which three features of a ZFS Storage Appliance are suitable for application storage consolidation?
A. hybrid storage pools
B. deduplication
C. compression
D. thin provisioning
Answer: B,C,D
Explanation:
Four Advantages of Application Storage Consolidation and the Sun ZFS Storage Appliance:
Incorrect: Answers
A: Oracle ZFS Storage Appliance implements a Hybrid Storage Pool architecture designed to work with multiple tiers of storage media to maximize the performance for the virtualized environment
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