1Z0-547 | Regenerate 1Z0-547 Exam Study Guides With New Update Exam Questions
Q21. When ample storage space is available, which storage profile should be selected when both high performance and high reliability are required?
A. Striped
B. Mirrored
C. Double-parity RAID
D. Single-parity RAID, narrow stripes
Answer: C
Explanation:
Incorrect answers
A: No reliability with striped
B: Low performance with mirrored.
Note:Wide Striping occurs when chunks of data are spread across multiple arrays, possibly all the drives in the system. Narrow Striping occurs when the chunks of data are spread across the drives in a single array.
Q22. Which service uses IDMAP to associate Windows and UNIX identities?
A. SMTP
B. CIFS
C. NTP
D. DNS
Answer: B
Explanation: The Solaris CIFS service determines the Windows user's Solaris credentials by using the idmapd service to map the SIDs in the user's Windows access token to UIDs and GIDs, as appropriate. The service checks the mappings and if a match for the Windows domain name and Windows entity name is found, the Solaris UID or GID is taken from the matching entry. If no match is found, an ephemeral UID or GID is dynamically allocated.
Note:idmapis an iIdentityMapping service for POSIX and Windows identity conversion.
Reference:Solaris CIFS Administration Guide,Identity Mapping Administration
Q23. In a hybrid storage pool, which statement is correct?
A. ZFS transparently executes writes to a pool of low-latency SSD media.
B. File systems must be statically sized to achieve optimal performance.
C. ZFS transparently optimizes data placement across hard-disk drives to deliver improved throughput.
D. SSDs are used as a write cache for actively used data.
Answer: A
Explanation: The ZFSHybrid Storage Pool, composed of optional Flash-memory devices for acceleration of reads and writes, low-power, high-capacity disks, andDRAMmemory, all managed transparently as a single data hierarchy.
Reference: Sun ZFS Storage 7000 System Administration Guide
Q24. Log devices are designed to improve the performance of asynchronous write workloads.
A. True
B. False
Answer: B
Explanation: Log devices are used to prevent data loss, not to improve performance.
Note:The data on logdevices is only used in the event of node failure, so in order to lose data with
an unmirrored logdevice it is necessary for both the device to fail and the node to reboot within a
few seconds.
Q25. One can find the current status of replication for a share by .
A. Clicking Configuration: Services: Remote Replication
B. Clicking Shares: edit selected Share: Replication
C. Clicking Shares: Project: edit selected Project: Replication
D. Clicking Maintenance: Logs: Alerts
Answer: C
Explanation: The status of individual replication actions and packages can be monitored using the BUI and
CLI.
Replication packages are displayed in the BUI as projects under the "Replica" filter.
Selecting a replication package for editing brings the administrator to the Shares view for the package's project. From here, administrators can manage replicated shares much like local shares with the exceptions described above. Package properties (including status) can be modified under the Replication tab.
The status icon on the left changes when replication has failed
Packages are only displayed in the BUI after the first replication update has begun. They may not appear in the list until some time after the first update has completed.
Reference: Sun ZFS Storage 7000 System Administration Guide, Managing Replication Packages, BUI
Q26. Which is the supported way to show network interface configuration from the CLI?
A. ifconfig -a
B. configuration net interfaces show
C. status dashboard
D. mdb -k
Answer: B
Explanation: Example: caji:configuration net> interfaces show Interfaces: INTERFACE STATE CLASS LINKS ADDRS LABEL nge0 up ip nge0 192.168.2.80/22 caji
Reference: Sun ZFS Storage 7000 System Administration Guide
Q27. Replication is supported for which three of the following?
A. iSCSI LUNs
B. FC LUNs
C. Shares (CIFS or NFS)
D. Infiniband
E. FCoE
Answer: A,B,C
Explanation:
Q28. What type of I/O workload is likely to get the most benefit from read SSDs?
A. Random write
B. Random read
C. Sequential read
D. Sequential write
E. Mixed random and sequential write
Answer: B
Explanation: The L2ARC is the 2nd Level Adaptive Replacement Cache, and is an SSD based cache that is accessed before reading from the much slower pool disks. The L2ARC is currently intended for random read workloads.
Reference: Sun ZFS Storage 7000 Analytics GuideCache: L2ARC I/O bytes
Q29. Which three are supported methods for viewing system statistics?
A. Analytics
B. Solaris stat tools: iostat(1M), vmstat(1M), and so on
C. Appliance CLI
D. Oracle SunPlex Manager
E. SNMP
Answer: A,C,E
Explanation: A:Analyticsstatistics provide incredible appliance observability, showing how the appliance is behaving and how clients on the network are using it.
C:
Note:The Sun ZFS Storage Appliance's scripting functionality is implemented by a JavaScript
Language Interpreter build in the appliance CLI layer.
E:The SNMP (Simple Network Management Protocol) service provides two diferent functions on the appliance: *Appliance status informationcan be served by SNMP. *Alerts can be conigured to send SNMP traps Both SNMP versions 1 and 2c are available when this service is enabled
Q30. Which of the two statements below on snapshots are true?
A. Automatic snapshots can only be set on a project or a share, but not both
B. Automatic snapshots can be retained for a maximum of 4 years
C. Automatic snapshots can be set on both projects and shares
D. Automatic snapshots can be taken on half hour, hourly, daily, weekly, or monthly schedules
Answer: A,D
Explanation: A (not C):Automatic snapshots can only be set on a project or a share, but not both. D:In addition to manual snapshots, you can configure automatic snapshots according to an arbitrary schedule. These snapshots are named '.auto-<timestamp>', and can be taken on half hour, hourly, daily, weekly, ormonthly schedules.
Reference: Sun ZFS Storage 7000 System Administration Guide, Scheduled Snapshots