[Dec 15, 2021] Get New E20-555 Practice Test Questions Answers
E20-555 Dumps and Exam Test Engine
Dell EMC E20-555 Exam Syllabus Topics:
| Topic | Details | Weights |
|---|---|---|
| Workload Analysis Tools | -Describe the cluster monitoring with InsightIQ and isi statistics -Describe the nature and appropriate use of workflow analysis tools: iostat, iperf, tcpdump, Wireshark, NFSstat | 8% |
| Isilon Infrastructure | -Describe the nature and use of Isilon nodes, components, node pools, and node compatibilities -Describe the nature and use of latency, sequential versus random access, and endurant cache -Describe the nature of Isilon networking, Access Zones, and use of SmartConnect | 20% |
| Isilon Management, Identity Management, and Advanced Applications | -Describe how to determine when to use SnapshotIQ when snapshots are not recommended -Describe data requirements regarding SmartPools, File Pools, and CloudPools -Describe data requirements regarding SyncIQ, SmartQuotas, SmartDedupe, Antivirus, and SmartLock -Describe the client access, client permissions and client protocol accesson the Isilon cluster -Describe the nature and use of job engines -Describe the nature and use of RBACand ZRBAC -Describe journaling, file striping, data protection, metadata, and caching -Describe replication and recovery | 47% |
| Solution Design Process | -Describe the information requirements for designing an Isilon solution, including determining hardware and software capacity, file server consolidation, file size considerations, performance sizing impact, data types, and I/O characteristics | 7% |
NEW QUESTION 150
You have gathered information from your customer about their current NAS environment. They indicated they are having performance and time-out issues with their clients accessing the storage. Currently over 5000 clients are simultaneously accessing the NAS; however, this will double in the next year.
Based on this information, what recommendations for a new Isilon cluster would you give to the customer based on this information?
- A. Create a five node X400 cluster today. As more clients are added, add a Performance Accelerator node for every 1000 clients.
- B. Create a seven node X400 cluster today. You will not need to purchase additional nodes as more clients are added.
- C. Create a three node cluster today. As more clients are added, add three additional nodes each time for 1000 clients.
- D. Create a six node X400 cluster today. As additional clients are added, add additional X400 nodes for them.
Answer: D
NEW QUESTION 151
A customer's cluster contains three X200 (24 GB RAM, 3 TB drives) nodes, and three X400 (48 GB RAM, 1 TB drives) nodes. All nodes are configured in a single pool. All data is protected at N+2. After upgrading OneFS to 7.0, the Isilon Web interface indicates that files are not fully protected.
What should be done to correct this situation?
- A. Add two X200 nodes and two X400 nodes
- B. Add 24 GB RAM to each of the X200 nodes
- C. Recreate the original pool using the Isilon Web interface
- D. Recreate the original pool using the command line interface
Answer: D
NEW QUESTION 152
When using an N+2:1 protection policy on a 7-node Isilon cluster, how much capacity will be used to store a 510 KiB file?
- A. 766 KiB
- B. 768 KiB
- C. 638 KiB
- D. 640 KiB
Answer: C
NEW QUESTION 153
What is the recommended namespace path for the access zone on a new Isilon cluster with SyncIQ license?
- A. /ifs/<Access-Zone_Name>/<Cluster-Name>/data
- B. /ifs/<Cluster-Name>/data
- C. /ifs/<Cluster-Name>/<Access-Zone_Name>/data
- D. /ifs/<Access-Zone_Name>/data
Answer: B
Explanation:
Reference:
https://www.dellemc.com/en-us/collaterals/unauth/technical-guides-support-information/2019/09/ docu95372.pdf
NEW QUESTION 154
An Isilon customer's administrator created the nested directory structure, shown in the exhibit, using SmartQuotas. However, a user needs to write an additional 650 GB of data to "/ifs/data/acct/recv".
Which steps will enable the user to complete this task?
- A. Directory1 QuotIncrease to 1400 GB User QuotIncrease to 1000 GB on Subdirectory2
- B. User QuotA.Decrease to 400 GB on Subdirectory1 Directory1 QuotA.Increase to 1650 GB
- C. Directory1 QuotA.Increase to 1350 GB User QuotA.Decrease to 1000 GB on Subdirectory1
- D. User QuotA.Decrease to 650 GB on Subdirectory2 Directory1 QuotA.Decrease to 1650 GB
Answer: A
NEW QUESTION 155
-- 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 --
The customer has a limited budget. What would be the best price/performance solution for their active data?
- A. 14 NL-Series nodes with 24GB of RAM
- B. 14 X-Series nodes with no SSD drives and 96GB of RAM
- C. 12 X-Series nodes with no SSD drives and 24GB of RAM
- D. 17 X-Series nodes with SSD drives and 48GB of RAM.
Answer: B
NEW QUESTION 156
Refer to the exhibit.
You are analyzing a customer's existing Isilon environment using isi statistics in order to expand the cluster.
When examining the protocol subcommand, you see the output as shown in the exhibit.
What does the data tell you about the workload?
- A. It is mostly sequential reads.
- B. It is metadata intensive.
- C. It uses large read requests.
- D. It contains mostly random writes.
Answer: B
NEW QUESTION 157
Which feature of OneFS is used in the Home Directory and File Share vertical to monitor storage and media clients for optimal performance?
- A. Aspera
- B. InsightIQ
- C. SmartPools
- D. SyncIQ
Answer: C
Explanation:
Reference:
https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h11152-isilonhome- directories-wp.pdf
NEW QUESTION 158
A customer is considering using the CloudPools feature to send archive data to their on premises object storage appliance. The customer needs to know how many objects will be created by the Isilon when it tiers files using CloudPools.
If the customer has 20 1MB files, 2 10MB files and 4 3MB files, how many objects will CloudPools version 1.0 create?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Reference:
https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h14775-isiloncloud- pools-and-ecs-solution-guide.pdf (10)
NEW QUESTION 159
-- 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 --
The customer will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to add per month?
- A. 9.6 TB
- B. 4.8 TB
- C. 1.2 TB
- D. 14.4 TB
Answer: A
NEW QUESTION 160
When installing nodes into a Dell EMC rack, which node type requires the use of a Titan-HD rack?
- A. A200
- B. A2000
- C. H500
- D. F800
Answer: B
Explanation:
Reference:
https://manualzz.com/doc/24184612/isilon-site-preparation-and-planning-guide
NEW QUESTION 161
In an Isilon cluster, what is the largest number of nodes that a single file can be striped across?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 162
A company currently has multiple fileservers to provide home directories for its employees. Each department has a separate fileserver. Most corporate users are on Windows clients and utilize Active Directory, except for the Engineering department, which uses Linux and NIS for authentication. The company is looking for a solution with minimal administrative overhead and a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?
- A. Utilize SmartPools to create two different FilePools, and separate Windows users from Linux users.
- B. Configure a single cluster, and migrate Linux users to Windows.
- C. Configure two separate clusters, one for Windows clients and the other for Linux.
- D. Configure a single Isilon cluster and utilize Access Zones for authentication to Active Directory and NIS.
Answer: D
NEW QUESTION 163
A customer experiences a system failure on an Isilon storage node.However, the disk drives in the node are not affected.
What is the preferred method for restoring cluster integrity?
- A. Engage EMC support to perform a Disk Tango process to move drives, journal, and boot volumes to a replacement chassis
- B. Allow OneFS to proceed with its automatic SmartFail process to re-protect the failed node
- C. Initiate a manual SmartFail process on the node as it is not started automatically
- D. Migrate the disks from the failed node into spare drive bays on other nodes
Answer: A
NEW QUESTION 164
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.
Which protocols would be the best fit when using Isilon for this customer's Hadoop workflow?
- A. SyncIQ and HTTP
- B. NDMP and SCP
- C. NFS and HDFS
- D. CIFS and FTP
Answer: C
NEW QUESTION 165
-- Exhibit -
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment.The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
-- Exhibit -
What steps would you recommend to the IT Director to allow for collaboration between the engineering company and the manufacturing company?
- A. Set up Access Zones on the Isilon cluster using Active Directory (AD) and NIS authentication.
Create directories and apply user group permissions from AD and NIS for each collaboration
team. - B. Create a new pool for use by the collaboration users.
Set up Access Zones on the Isilon cluster using AD and NIS authentication. - C. Repoint the engineering users to the Active Directory controller
Add the users to the appropriate Active Directory security group. - D. Upload a collaboration user csv file into the cluster with usernames and passwords for the
collaboration directory.
Answer: A
NEW QUESTION 166
A company wants to reduce the footprint in their data center. They recently completed a proof of concept with Hadoop using Direct Attached Storage (DAS) for their Big Data initiative. You have determined that incorporating an Isilon cluster into their Hadoop environment would help in reducing this footprint.
Which Hadoop components can be consolidated onto the Isilon cluster to reduce the footprint?
- A. DataNode and NameNode
- B. ComputeNode and NameNode
- C. DataNode and ComputeNode
- D. NameNode and TaskTracker
Answer: A
NEW QUESTION 167
A customer is considering using the CloudPools feature to send archive data to their on premises object storage appliance. The customer needs to know how many objects will be created by the Isilon when it tiers files using CloudPools.
If the customer has 20 1MB files, 2 10MB files and 4 3MB files, how many objects will CloudPools version 1.0 create?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Explanation/Reference: https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h14775-isilon- cloud-pools-and-ecs-solution-guide.pdf (10)
NEW QUESTION 168
When conducting high-level interviews with stakeholders of a project, what are the key questions that should be asked?
- A. Who are the application owners?
How much usable storage is needed?
What applications will be accessing the storage?
How many users are in your Active Directory? - B. How much usable storage are you looking for?
What client OS will access this storage?
Which applications will access this storage? - C. Which backup application is in use today?
What is your change rate?
How many clients will connect to the cluster? - D. What does your network architecture look like
Do you have existing NAS infrastructure?
Do you have 10Gb or 1Gb
Which applications will access this storage?
Answer: B
NEW QUESTION 169
A customer has a cluster running with a single access zone and serves multiple internal departments. The clients access the cluster over both SMB and NFS protocols. A department user has been assigned the task of auditing SMB activity and enforcing appropriate quotas for certain users.
How should the cluster administrator grant this access?
- A. Create a secondary root account credential
- B. Provide the AuditAdmin RBAC role
- C. Create a custom RBAC role
- D. Provide the SecurityAdmin RBAC role
Answer: A
NEW QUESTION 170
You are asked to size a cluster for a file sharing environment. nfsstat indicates that 75% of the requests are namespace operations (e.g., GETADDR, SETADDR). There will be 8,000 active Linux users, connecting over NFS.
Which cluster configuration would you recommend?
- A. Eight X200 (36 TB) 48 GB RAM, no SSD, N+2:1
- B. Eight X200 (27 TB) 12 GB RAM, 600 GB SSD, N+2
- C. Eight X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
- D. Five X400 (66 TB) 48 GB RAM, 1.2 TB SSD, N+2:1
Answer: C
NEW QUESTION 171
Three jobs of different exclusion sets with a priority level of 5 are concurrently running on a cluster. A new job with a priority of 4 needs to be run.
What does the Job Engine do?
- A. Pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the beginning
- B. Runs the new job in parallel with the other running jobs
- C. Pauses all priority 5 jobs and runs the new job until completion, then restarts the paused job
- D. Queues the old job of the same exclusion set until the job with a higher priority completes
Answer: A
Explanation:
Reference:
http://doc.isilon.com/onefs/7.1.1/help/en-us/GUID-C8094DAD-330E-4110-82A8- B97FEFB2D89A.html
NEW QUESTION 172
Your customer has observed a degradation in response time while browsing for media files within the Production Media folder of the Isilon cluster. That directory now contains over five million files. It was confirmed that there are no network or edit station related causes.
What changes to the Isilon cluster will best accelerate the browsing performance?
- A. Upgrade node access to 10 Gbps
- B. Add Solid State Drives (SSDs) to the nodes
- C. Upgrade RAM on the nodes
- D. Add A-Series Performance Accelerator nodes
Answer: B
NEW QUESTION 173
-- Exhibit --
A European Sports TV network is considering Isilon for their Media Edit Storage for their editing workloads.
They are also considering Isilon for near-line media archiving.
The network receives XDCAM HD footage which is loaded onto their existing Transcoding Storage platform. New footage that needs to be edited will be transferred from their Transcoding Storage platform to the proposed Media Edit Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
Edited files will be transferred back to the Transcoding Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
The network currently has 15 Final Cut Pro edit stations, 15 Avid edit stations. Proxy software will be used to allow Isilon to act as the storage for the Final Cut Pro and Avid media. Three of those edit stations will be performing content compositing as needed.
The network expects 70 hours of new content per week, and 50 hours of edited content per week. They intend to keep the new and edited content on the proposed Media Edit Storage as a performance tier for
30 days. They would like to retain all new and edited footage proposed Media Edit Storage as a near-line tier for two years.
In addition to the current workloads, the network expects to implement a new Media Asset Management (MAM) solution and has requested the Isilon cluster be capable of supporting 120 MBps read and 120 MBps write to support the MAM requirements.
-- Exhibit --
Refer to the exhibit.
Based on the described use of the cluster, what are the customer's capacity requirements?
- A. 30 days retention: 5 TB; 2 years retention: 120 TB
- B. 30 days retention: 15 TB; 2 years retention: 360 TB
- C. 30 days retention: 1 TB; 2 years retention: 24 TB
- D. 30 days retention: 30 TB; 2 years retention: 720 TB
Answer: B
NEW QUESTION 174
You have scheduled a meeting with a prospective customer in the Life Sciences vertical market. Which Isilon features should be presented to them?
- A. SyncIQ, Antivirus, 10 GigE support and HDFS
- B. SyncIQ, SmartLock, HDFS and SmartConnect
- C. SmartPools, HDFS, 10 GigE support and SmartQuotas
- D. SmartLock, HDFS, SmartPools and SmartQuotas
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION 175
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