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IBM IBM Certified Specialist C4090-456

C4090-456

Exam Code: C4090-456

Exam Name: IBM XIV Storage System Technical Solutions V4

Updated: Sep 05, 2025

Q & A: 70 Questions and Answers

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IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. XIV Quality of Service limits I/O to which of the following?

A) mirrored pairs
B) hosts
C) consistency groups
D) storage pools


2. Which statement is true regarding XIV virtualization and the advanced snapshot mechanism?

A) A volume and its corresponding snapshots can be part of several storage pools.
B) A volume's snapshot can be copied to a volume in another storage pool.
C) A volume and its corresponding snapshots can be part of several consistency groups.
D) A volume can have one snapshot only.


3. Which of the following is a benefit of the XIV system's storage allocation methodology?

A) one MB partitions ensure efficient cache utilization
B) all workloads are distributed throughout the system
C) storage pools are always allocated on separate physical disks
D) parityis protecting data across all modules


4. A customer wants to ensure resource availability for their SAP application by implementing Q0S. How could the performance class be defined?

A) limited to 10,000 IOPS and add the SAP application servers to it
B) limited to 10,000 IOPS and add all hosts except the SAP application to it
C) for half of the interface modules add all hosts, with the remaining modules serving the SAP application
D) for half of the interface modules add the SAP application, with the remaining modules serving all other I/O


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

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


Solutions:

Question # 1
Answer: B
Question # 2
Answer: B
Question # 3
Answer: B
Question # 4
Answer: B
Question # 5
Answer: C

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