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EMC DEE-1421 Expert - Isilon Solutions Exam Exam Practice Test

Demo: 8 questions
Total 60 questions

Expert - Isilon Solutions Exam Questions and Answers

Question 1

Case Study 4

A company is experiencing a noticeable decrease in performance when accessing data on their Dell EMC Isilon cluster. The cluster hosts Microsoft Windows home directories and general purpose file shares. In addition, a file pool policy moves data that has not been modified in six months to an achieve tier. The administrator wants your assistance in understanding the reason for the slow data access. The number of users accessing the cluster has not changed. The administrator has shared the following baseline metrics. The outputs were captured from a performance- acceptable time frame.

Trace route shows:

-3 hops between clients and the cluster

-Average latency is 3 ms

Iperf shows:

-940 Mb/s average bandwidth

-005 ms average jitter

Netstat on the local network shows:

-05% average re-transmission rate

Hostcache list:

-20 ms average roundtrip time across all clients

The administrator shows you the details of the hostcahce.list output. The output indicates that the top clients on the list have an average of 242 ms round trip time. Based on the output, what information should be provided to the administrator?

Options:

A.

An increase in the average round trip time indicates a network problem.

B.

Only the aggregate of all average round trip times will indicate an issue.

C.

An average round trip time less than 300 ms is in the acceptable range.

D.

Recalculate and re-populate round trip times by using isi_cbind clear command.

Question 2

SPECIAL INSTRUCTIONS

The remaining Part1 questions are associated with four case studies that describe various environments or settings. Each case study appears on its own display screen. Questions for each case study will appear on separate display screens.

When displaying a question, you can easily review the related case study by clicking on the “Review Case Study” icon shown below:

Case Study 5 – Refer to the Exhibit.

Backing up data from a Dell EMC Isilon cluster exceeds the company’s backup window. Because the company has a large amount of data with a continuous high growth rate, they want to change their backup strategy. The Gen 6 Isilon cluster consists of 24 nodes.

Their current backup strategy is an NDMP three-way backup performing weekly full backups to tape and incremental backups each night. The strategy uses Dell EMC NetWorker. The DMA uses Include paths to specify what data to backup. All data on the cluster must remain accessible.

The company’s IT team is now looking for a method to increase the performance of their backups. After some investigation, you notice that the backup job targets two paths. This could be the cause of the lengthy backup times.

What advice should be provided to the team?

Options:

A.

Exclude the largest datasets from the backup job

B.

Add A100 Backup Accelerators and configure for two-way NDMP

C.

Create more parallel streams to utilize multi-stream NDMP backups.

D.

Change the backup strategy to token-based backups.

Question 3

SPECIAL INSTRUCTIONS

The remaining Part1 questions are associated with four case studies that describe various environments or settings. Each case study appears on its own display screen. Questions for each case study will appear on separate display screens.

When displaying a question, you can easily review the related case study by clicking on the “Review Case Study” icon shown below:

Case Study 5 – Refer to the Exhibit.

Backing up data from a Dell EMC Isilon cluster exceeds the company’s backup window. Because the company has a large amount of data with a continuous high growth rate, they want to change their backup strategy. The Gen 6 Isilon cluster consists of 24 nodes. Their current backup strategy is an NDMP three-way backup performing weekly full backups to tape and incremental backups each night. The strategy uses Dell EMC NetWorker. The DMA uses Include paths to specify what data to backup. All data on the cluster must remain accessible.

The company’s IT team is now looking for a new data protection strategy. The company wants to:

  • Minimize the backup window
  • Increase the speed of data recovery
  • Reduce the network traffic
  • Reduce the overall growth of the backup datasets

The IT Team indicates that their currently backup hardware will be used in any solution. Which solution meets their requirements?

Options:

A.

Implement an incremental forever backup strategy

B.

Configure the DMA to use IPv6 for better performance

C.

Change the backup strategy to token-based backups

D.

Increase the backup tape block size to 512 KB

Question 4

SPECIAL INSTRUCTIONS

The remaining Part1 questions are associated with four case studies that describe various environments or settings. Each case study appears on its own display screen. Questions for each case study will appear on separate display screens.

When displaying a question, you can easily review the related case study by clicking on the “Review Case Study” icon shown below:

Case Study 5 – Refer to the Exhibit.

Backing up data from a Dell EMC Isilon cluster exceeds the company’s backup window. Because the company has a large amount of data with a continuous high growth rate, they want to change their backup strategy. The Gen 6 Isilon cluster consists of 24 nodes. Their current backup strategy is an NDMP three-way backup performing weekly full backups to tape and incremental backups each night. The strategy uses Dell EMC NetWorker. The DMA uses Include paths to specify what data to backup. All data on the cluster must remain accessible.

The company’s IT team is now looking for a method to increase the performance of their backups. After some investigations, you notice that the backup job quiesces the file system. This is creating lock contention issues on open files and not allowing users full access to data when the backup job runs.

What advice should be provided to the team to eliminate lock contention and allow full access to users?

Options:

A.

Create a cron job to remove all locks before each backup.

B.

Add A100 Backup Accelerators and configure for three-way NDMP

C.

Stop using an NDMP-based backup strategy.

D.

Enhance the backup strategy using snapshots for backups.

Question 5

A company’s HPC environment is using Dell EMC Isilon Gen 6 nodes. They have additional throughput requirements and have asked for your recommendations. The environment consists of two subnets:

  • Mgmt-subnet: 1x1-GigE interface in the “mgmt-pool” for management traffic on a VLAN-tagged management network in an Isilon default System Access zone.
  • Data-subnet: 2x10-GigE aggregated interfaces in the “data-pool” for data traffic on a VLAN-tagged data network in an Isilon user-defined data Access Zone

Which recommendation should be provided?

Options:

A.

Use different groupnets for management and data traffic

B.

Move the data pool into the System Access zone

C.

Remove VLAN tagging from the network

D.

Use only one subnet and pool for both the management and data traffic.

Question 6

A company has a Dell EMC Isilon cluster that will be used for a large amount of client requests. SmartConnect has been configured to help load balance the clients across the cluster. How does SmartConnect help the load balancing?

Options:

A.

Forwarding DNS requests.

B.

Caching lookup requests.

C.

Directing the connections to different nodes.

D.

Dynamically updating changes to DNS.

Question 7

A Dell EMC Isilon administrator has reported that in Access zone “ProdZone” on the OneFS file system “nfs1”, Microsoft Windows “DEES\user1” has root level permission on nfs1. Use the “Launch Situation” button to examine the environment and validate the reason for this condition. Note: It is necessary to “close” (x) the simulation windows to answer the question.

Based on your findings, what is the reason for the condition?

Options:

A.

RFC-2307 has been enabled

B.

NFS Export settings has been set

C.

Active Directory has not been added to the Access Zone

D.

User mapping rule has been created

Question 8

You are working with a company to migrate from a Microsoft Windows file server to a Dell EMC Isilon cluster using the account “admin1” in the “Domain Admin” group. When opening a directory, you receive an error message stating “permission denied”. You check the permissions and see that Domain Users are denied, Domain Admin has Full Control, and admin1 has read permission.

Why is the access denied?

Options:

A.

admin1 is not the owner of the directory

B.

admin1 only has read permission

C.

admin1 is a member of the Domain Admin group

D.

Deny ACE entry is listed first

Demo: 8 questions
Total 60 questions