QUESTION: 25

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?

Use different groupnets for management and data traffic
Move the data pool into the System Access zone
Remove VLAN tagging from the network
Use only one subnet and pool for both the management and data traffic.

Answer(s): A

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QUESTION: 26

You are assisting a company in planning for a Dell EMC Isilon disaster recovery site. One of the company’s concerts is the time that is needed for the initial synchronization between the primary and disaster recovery sites. What will help address this concern?

After creating the policies, use the “assess sync” functionality
Use a third-party tool to estimate the time based on the data and the bandwidth available
Time cannot be estimated due to many factors such as the cluster workload
After creating the policies, start the job and observe how much time it takes

Answer(s): D

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QUESTION: 27

A company has a Dell EMC Isilon Gen 5 cluster with SSDs in each node. The administrator notices that L3 Cache is enabled on the cluster. However, the administrator does not notice any performance increase for the read I/Os. After further investigations, the administrator discovers that all read I/Os are more than 128K chunks. Which recommendation should be provided to improve the read performance?

Change the SSD strategy to “data on SSD’
Disable L3 Cache and change the SSD strategy to “metadata-read acceleration”
Enable Global Name Space acceleration in addition to L3 Cache.
Add one more SSD of equal capacity to each node.

Answer(s): B

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QUESTION: 28

A company has a cluster with two subnets. The first subnet has 1 GbE interfaces dedicated for management and the second subnet has 10GbE interfaces dedicated for handling all data access. When the cluster started serving the production environment, poor performance was observed while the data is accesses through the data subnet. While troubleshooting the network, the administrator discovered that the return traffic is going through the management network.
Which recommended solution will resolve this issue?

Change the gateway priorities
Enable destination-based routing with static routes
Enable source-based routing
Configure static routes for both subnets

Answer(s): A

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QUESTION: 28