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Dell E20-555 Exam Practice Questions (P. 5)

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Question #41
Where are file system operations initiated on an Isilon node?
  1. A
    L1
  2. B
    NVRAM
  3. C
    L2
  4. D
    Disk

Correct Answer:
A

Question #42
For concurrent I/O, how do SmartCache and Endurant Cache differ?
  1. A
    Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
  2. B
    Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
  3. C
    SmartCache immediately commits the write to NVRAM on the local node and one peer node
  4. D
    SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file

Correct Answer:
A

Question #43
Where is caching for disk blocks staged on an Isilon node?
  1. A
    L2
  2. B
    CPU
  3. C
    L1
  4. D
    RAID

Correct Answer:
A

Question #44
A customer is looking for a new storage solution to handle their growing storage requirements. The system should be able to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.
The customer is looking for a solution that would provide good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.
Which recommendation will meet the customers requirements?
  1. A
    Isilon for file system data, and a VNX for DB and VMware workloads
  2. B
    Isilon cluster and scale-out as required
  3. C
    VNX Unified platform with FAST Cache
  4. D
    VMAX with FAST VP and a NAS Gateway

Correct Answer:
A

Question #45
What is the relative latency of a cache hit to L1 cache compared to a hit to L2 cache in an Isilon cluster?
  1. A
    2x
  2. B
    5x
  3. C
    10x
  4. D
    25x

Correct Answer:
C

Question #46
Where does SmartCache stage its write cache?
  1. A
    SSD
  2. B
    DISK
  3. C
    NVRAM
  4. D
    DRAM

Correct Answer:
D

Question #47
Which type of data is stored in Endurant Cache of an Isilon node?
  1. A
    Write
  2. B
    Volume
  3. C
    Read
  4. D
    Protection

Correct Answer:
A

Question #48
What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6-node Isilon cluster?
  1. A
    1/2
  2. B
    1/4
  3. C
    1/5
  4. D
    1/6

Correct Answer:
C

Question #49
A customer has 10 nodes in a cluster using N+2 protection. What is the minimum number of nodes required to be online and in communication with one another to satisfy quorum?
  1. A
    4
  2. B
    5
  3. C
    6
  4. D
    7

Correct Answer:
C

Question #50
In an Isilon cluster for N+2 protection, what is the minimum number of nodes?
  1. A
    3
  2. B
    5
  3. C
    6
  4. D
    9

Correct Answer:
B

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