EMC Isilon Design Specialist Exam for Technology Architects 認定 E20-554 試験問題:

1. A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data.
According to EMC best practices, how many additional many additional copies of data are written into the Isilon cluster using HDFS?

A) None
B) Two
C) Three
D) One

2. Your customer's initial use case was Home Directories. They implemented the cluster with four 1Gbps ports and LACP. They are planning to expand their cluster to support their core file services. They plan to upgrade their network infrastructure to 10 GbE to facilitate this.
What are two design impacts this change will have?

A) Dual 10GbE ports on each node will enable throughput of 20Gbps. Only connect half of the nodes to the network.
B) LACP and multiple links may be used to increase redundancy, but will not provide more overall
performance to the system.
FCoE should be considered for the External Network Ports on the nodes.
C) Maximum performance is obtained by only using a single 10GbE interface per node. LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system
D) Maximum performance is obtained by only using a single 10GbE interface per node. Isilon can support up to 400MB/s per node

3. Refer to the exhibit.

During a requirements gathering meeting, the customer identified a desire to use a codec for editing content that will take up the least amount of space on their Isilon cluster. The content is 1920x1080 HD.
Based on the provided list of codecs, which codec would minimize the storage requirement?

A) DNxHD 145 8 Bit
B) ProRes 4444 12 Bit
C) DNxHD 220 10 Bit
D) DPX 8 Bit

4. When designing Isilon solutions, which issue should you pay special attention to?

A) Meet customer expectations
B) Create a workflow document
C) Conduct stakeholder interviews
D) Follow all SSD sizing rules

5. Your customer purchased an Isilon cluster with eight X400 nodes for Home Directories. Your follow-up discussions have uncovered an opportunity to expand the cluster to support the Legal Department. As you prepare to complete the Workflow Profile Document, you meet with the customer to discuss data protection.
Which key areas should you address?

A) Default cluster protection level Additional directory level protections Snapshots and replication
B) WORM requirements Network ports for replication Snapshots for user restores
C) Default cluster protection level Backup windows and processes Concurrency of user access
D) Protocols (SMB, NFS, FTP, HTTP, HDFS) Authentication and Directory Services Performance and latency concerns

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