E20-555 Online Practice Questions and Answers

If Dynamic IP Address Allocation is being configured in Isilon SmartConnect, which policy setting needs to be determined?

A. Rebalance

B. Load Balancing

C. Static

D. Dynamic

An Isilon customer wants the ability to provide low latency I/O for their files due to a workflowinvolving small, random reads and writes. Which SSD strategy is most effective for this use case?

A. Data on SSDs

B. Metadata read acceleration

C. Metadata read/write acceleration

D. Avoid SSDs

You set up a meeting to gather information on a new project with the IT manager and plan to use a workflow profile assessment (WPA) to document the requirements.

Why is it recommended to talk to as many stakeholders as possible?

A. Helps downstream personnel, such as implementation and delivery, to have a clearer understanding of the requirements.

B. Completing this document gives sales a list of who the stakeholders are at customer site.

C. Using workflow profile enables sales to take this information to EMC consulting for review to validate the configuration.

D. Using the WPA tool will give you the best "big picture" to see things such as block size, de-dupe, file size and volumes.

Your customer has an Isilon cluster with five X400 nodes and four 72NL nodes. A SmartPools policy moves data to the NL nodes after 60 days of inactivity. The customer wants to expand the archive tier by at least 150 TB and would like to manage a single archive pool.

Which nodes should be added to the cluster?

A. Three NL400 nodes with 2TB drives

B. Three X400 nodes with 1TB drives

C. Two NL400 nodes with 4TB drives

D. Two X400 nodes with 3TB drives

Your customer has several departments that want separate access to the cluster so they can use their individual authentication methods. Two of the departments will use NFS and two will use SMB to access the cluster.

What would you recommend?

A. Create two separate access zones for the SMB clients, and use the System zone for the NFS clients.

B. Create separate access zones for both the SMB and NFS clients.

C. Create two separate access zones for the NFS clients, and use the System zone for the SMB clients.

D. Have all clients access the System zone, and use RBAC to control authentication.

Refer to the exhibit.

A large hospital chain has approached you to redesign their storage infrastructure. The head of IT believes their requirement is for 100 TB of RAW capacity. They want to consolidate their PACS, file shares and home directories onto one cluster and require very fast enumeration of the directories. The following are the notes from meetings with the department heads.

Which is the best cluster configuration that meets the customer's requirements?

A. 4 x X-Series nodes using SynqIQ to 4 x NL-Series nodes

B. 3 x S-Series nodes using SmartPools and 3 x NL-Series nodes for Archive

C. 5 x S-Series nodes

D. 3 x NL-Series nodes using SynqIQ to 3 x NL-Series nodes

A telecommunications company has a substantial amount of data. This data is being created by network elements within their environment.

The company wants to change the way the network elements Call Detail Records (CDR) are stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure, and then ingests them into a large database. Once ingested, a query engine accesses the database and performs analysis on these files. The system is functional; however, since the amount of CDRs generated will increase exponentially over the next year, the company is open to alternatives for storing and analyzing these records.

In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs.

After you have conducted an assessment of the workflow, you have recommended an Isilon Cluster to work within the Hadoop environment.

Considering the customer's requirements, which is the best node type for the Isilon cluster?

A. NL400 with 48GB RAM and no SSDs per node

B. X400 with 96GB of RAM and no SSDs per node

C. X400 with 24GB RAM and 1.6TB of SSD per node

D. X200 with 24GB of RAM and 1.2TB of SSD per node

In an Isilon environment, which event will avoid Dynamic IP Address reallocation?

A. Client is added to the cluster

B. Failure of the back-end network

C. Node reboot

D. Cluster split

A cluster has user quotas configured for user's home directories with hard limits and advisory limits set. What would the default setting be for calculating user quotas on the cluster?

A. User data and data protection overhead only

B. User data only

C. User data, snapshot data, and data protection overhead

D. User data and snapshot data only

You have been tasked with designing a solution for a company that wants to logically separate access to their Isilon storage by department. Each of their major internal departments currently uses different Active Directory authentication providers. In addition, they want to provide Isilon storage access to these departments while maintaining their authentication separation.

Which feature will provide this functionality?

A. Access Zones

B. Network Segmentation

C. Multi-Homing

D. VLAN Trunking

What do you need to take into consideration when planning a job schedule?

A. Any three other jobs can run at the same time and they can run in conjunction with restripe or mark job phases.

B. Multiple restripe category job phases and one-mark category job phase can run at the same time.

C. Up to three jobs can run at the same time. Multiple restripe or mark job phases can safely and securely run simultaneously without interfering with each other and without risk of data corruption.

D. Up to three jobs can run at the same time. Multiple restripe or mark job phases cannot safely and securely run simultaneously without interfering with each other and without risk of data corruption.

A customer is running OneFS 8.0 on an Isilon cluster consisting exclusively of NL400 nodes. The storage administrator recently heard that OneFS 8.1 provides journal vaulting. What should you advise the storage administrator?

A. Replace the batteries of the battery backed volatile storage with NiMH batteries.

B. Add SSDs to all nodes of the existing cluster and upgrade to OneFS 8.1.

C. Migrate all data from the current Isilon cluster to a Gen 6 cluster.

D. Add a Gen 6 node to the existing Isilon cluster and upgrade to OneFS 8.1.

You need to gather information in order to design an Isilon solution. What are included in the Top 10 qualification questions?

A. Required capacity, average file size, growth rate, and network supplier

B. Current infrastructure, desired protocols, CapEx/OpEx preference, and growth rate

C. Required capacity, applications in use, desired protocols, and growth rate

D. Current infrastructure, applications in use, desired protocols, and company turnover

In an NFSv3 only environment, what is the recommended limit for active NFSv3 connections, per Isilon node?

A. 500

B. 1,000

C. 1,500

D. 2,500

Which SyncIQ policy is required if the goal is to have all source data replicated and to retain deleted files?

A. Async Policy

B. AutoBalance Policy

C. Copy Policy

D. Sync Policy