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EMC E20-554 Exam Syllabus Topics:

EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster. They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are X400's with two SSD drives in each node and 96GB of RAM.How many DataNodes does the Isilon cluster have?

A) Two
B) Three
C) Five
D) One

2. A customer has eight X400 24GB RAM nodes that support 400 client connections. They will be adding 400 more clients in the next few months. They are looking at adding an A-Series node to the cluster to help with client connections.Before they start adding client connections, what hardware change do you recommend?

A) Add an A100 node to offset concurrent client connections
B) Add nodes with SSD to help with connections
C) Add RAM to the nodes to offset concurrent client connections
D) Add more network switches to increase the number of connections

3. -- Exhibit -
We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit -
Currently, the workflows are being limited by the network access to the Isilon cluster.
What would result in the fastest possible network throughput?

A) Implement jumbo frames.
B) Move analysis infrastructure to dedicated 10G network.
C) Add four A-Series accelerator nodes.
D) Use LACP to aggregate the network connections.

4. Your customer is looking for a storage solution that will be able to store seven million 3 MB files which are written and seldom accessed. Read and write operations are both completed by a web-based application, which requires 1.3 Gbps throughput. The customer's network has not been upgraded in many years, so the network interfaces are 1 Gbps.
What would be the best solution for this network configuration?

A) Use jumbo frames to compensate for the 1GB Core network.
B) Bond EXT-0 across all nodes.
C) Aggregate Infiniband (IB) ports across all nodes.
D) Use LACP to aggregate the network ports on each node.

5. Which IsilonOneFS protection level allows you to withstand two drive failures but no more than one complete node failure?

A) N+2
B) N+3:1
C) N+1
D) N+2:1

Solutions: