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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. A customer wants to know how much capacity has been consumed against the Capacity on Demand entitlement on their XIV system.
How would the technical specialist determine the capacity consumed?

A) running the XCLI command system_capacity_list
B) running the XCLI command cod_list
C) running the XCLI command vol_list and summing the Used Capacity column
D) looking at the soft consumed capacity in the bottom left corner of the XIV GUI

2. How does IBM XIV SSD technology provide longer life over competitors' use of SSD technology?

A) hybrid algorithms combine features of SSDswith existing HDDsin the same unit
B) patented wear-leveling algorithm designed for SSD longevity
C) IBM SSDs are filled with write blocks of 1024kb in random I/O operations
D) common off-the-shelf components minimize the use of SSDs for write environments

3. What is the fastest way to see which volume is receiving the most IOPS on the XIV?

A) open XIV GUI and select the first 12 volumes, and then next 12 and so on
B) run XCLI command xcii volume_max_iops_list
C) opentheXIV GUI and checkthe volume view
D) openXIVTopinthedefaultview

4. How does the XIV system protect data arriving from hosts?

A) data is written to a single module before acknowledgement to the host
B) each module internally mirrors its cache to a special segment of memory
C) all data is written to cache in two modules and then acknowledged to the host
D) MPIO distributes a single I/O down multiple paths to different XIV modules

5. Compared to other IBM storage offerings, which of the following is unique functionality on an XIV system?

A) reduced single points of failure
B) IP based replication
C) prevents hotspots
D) ability to take snapshots

Solutions: