EMC E20-655 Exam Dumps
Isilon Specialist Exam for Platform Engineers
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What is EMC E20-655 Exam ?
The EMC E20-655 exam is a retired certification exam for EMC Isilon Specialists for Platform Engineers. It tests knowledge of the Isilon storage systems, including installation, configuration, and administration. The exam was 120 minutes long and consisted of 60 multiple-choice questions. The passing score was 70%.
The exam covered the following topics:
Isilon storage system architecture
Isilon storage system installation and configuration
Isilon storage system administration
Isilon storage system troubleshooting
Isilon storage system security
Isilon storage system performance tuning
Isilon replication
Isilon high availability
Isilon integration with other EMC products
To be eligible to take the exam, you must have a minimum of 2 years of experience with Isilon storage systems.
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Question 1
In a 4-node cluster using N+3:1 protection, how much is the overhead?
A. 25%
B. 50%
C. 300%
D. 100%
Question 2
In a 4-node cluster using N+2 protection, how much is the overhead?
A. 50%
B. 25%
C. 200%
D. 100%
Question 3
You run the command "isi get -DD /ifs/data/foo.txt" on a 4 node cluster. The displayed results indicate a protection level of 6+2/2. What statement best describes 6+2/2?
A. Protection level of N+2:1; Contains 6 data stripes units and 2 FEC stripe units; Written to 2 drives per node
B. Protection level of N+2:1; Contains 8 data stripe units and 2 FEC stripe units; Written to 2 drives per node
C. Protection level of N+2: Contains 8 data stripe units and 2 FEC stripe units; Written to 1 drive per node
D. Protection level of N+1: Contains 6 data stripe units and 1 FEC stripe unit; Written to 1 drive per node
Question 4
Referring to the data protection formula N+M, what does the M stand for?
A. Number of protection stripe units
B. Number of data stripe units
C. Number of nodes in the node pool
D. Number of nodes the file is striped across
Question 5
Referring to the data protection formula N+M, what does the N stand for?
A. Number of data stripe units
B. Number of protection stripe units
C. Number of nodes in the node pool
D. Number of nodes the file is striped across
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