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E20-655 Questions and Answers

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E20-655 Questions and Answers

Question # 6

Your customer is using a directory for a VMware environment. To which access pattern should you set the directory?

A.

Random

B.

Concurrency

C.

Streaming

D.

Aggregate

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Question # 7

Which statement best describes an advantage of the link aggregation control protocol (LACP)?

A.

Balances outgoing traffic across the active ports and accepts traffic from any active port

B.

Next active port in link becomes new master port if original master port becomes unavailable

C.

The only aggregation method that can increase single stream performance

D.

Does per packet load balancing across aggregated links

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Question # 8

A customer has configured a job to have a high impact level.

How will the job engine react to this action?

A.

It will allocate additional resources to the job when it runs.

B.

It will not pause the job for higher priority jobs.

C.

It will preserve the impact level if node load levels are too high.

D.

It will lower the priority level if node load levels are too high.

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Question # 9

Isilon support has requested that you upload logs from a large customer cluster. The customer is concerned because the log gather they ran two days ago took 23 hours to run.

How can you reduce the time it will take for a new gather to run?

A.

isi_gather_info --incremental

B.

isi_gather_info --http

C.

isi_gather_info --noupload

D.

isi_gather_info --skip_size_check

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Question # 10

What would the "tracert" command help determine when troubleshooting client connection issues?

A.

Identify whether multiple paths exist and if one is down

B.

Can measure RTT and Whois information

C.

Tests IP connectivity and Dead Gateway Detection

D.

The current TCP/IP configuration from the client

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Question # 11

A customer has a cluster on which round robin link aggregation has been implemented. The customer reports that throughput has decreased since implementation. What is the likeliest explanation for the result?

A.

Packets may arrive out of order and need reordering at the client side.

B.

Packets are being lost on each node's second interface and need retransmission.

C.

The client side also needs to be configured to handle round robin link aggregation.

D.

The switch needs to reroute each alternating packet, introducing latency.

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Question # 12

What type of information is provided by the "isi status" command?

A.

critical events, capacity statistics and usage, hardware status

B.

firmware version, memory usage, disk serial number

C.

warning events, cluster health, voltage status

D.

summarized events, cluster statistics, cluster job status

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Question # 13

Which job requires a license?

A.

QuotaScan

B.

SetProtectPlus

C.

Upgrade

D.

MultiScan

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Question # 14

Which two isi_ prefix commands are allowed for use by a customer?

A.

isi_gather_info and isi_for_array

B.

isi_gather_info and isi_radish

C.

isi_for_array and isi_inventory_tool

D.

isi_gather_info and isi_hw_status

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Question # 15

What are some differences between a Major upgrade and a Minor upgrade of OneFS?

A.

Major is a change to either of the first two decimal places of the OneFS version and Minor is a change to either of the last two.

B.

Major is a change to one of the first three decimals of the OneFS version while Minor is a change to the last digit.

C.

Minor is for code patches and Major is for Maintenance releases.

D.

Minor includes core operating system changes and Major is for core operating system changes and new OneFS functionality.

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Question # 16

You are supporting a customer’s cluster with 3 node pools consisting of 10 S200 nodes, 18 X400 nodes, and 30 NL400 nodes. The customer is going to write a large number of 4MB files to the X400 node pool. The customer is very concerned about minimizing the amount of overhead. Which setting would be best for minimizing the amount of overhead?

A.

N+2:1 or N+2 have the same amount of overhead.

B.

N+2:1 will have less overhead.

C.

I/O optimization should be set to Random.

D.

I/O optimization should be set to Streaming

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