How Many Questions Of E20-555 Free Practice Test

NEW QUESTION 1
A customer has a supported cluster with the maximum protection level. How many simultaneous node component failures can Isilon OneFS sustain while still allowing full access to the entire file system and dataset?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: D

NEW QUESTION 2
What determines the number of job engine workers assigned to a task?

• A. Job task
• B. Job priority
• C. Job impact policy
• D. Job phase

Answer: D

NEW QUESTION 3
A customer has a 7-node Isilon cluster configured with N+2:1 protection. How many nodes can be offline with the data accessible and fully writeable?

• A. 1
• B. 2
• C. 3
• D. 0; all nodes must be online

Answer: A

NEW QUESTION 4
-- 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: 15 TB; 2 years retention: 360 TB
• B. 30 days retention: 5 TB; 2 years retention: 120 TB
• C. 30 days retention: 1 TB; 2 years retention: 24 TB
• D. 30 days retention: 30 TB; 2 years retention: 720 TB

Answer: A

NEW QUESTION 5
If a client is mounted to the sixth node in a 20-node Isilon cluster, how much memory cache can that client leverage assuming each node has 8 GB of memory cache?

• A. 16 GB
• B. 40 GB
• C. 120 GB
• D. 160 GB

Answer: D

NEW QUESTION 6
In your second meeting with the customer you ask the following questions about their current unified SAN and NAS platform.
"Are you using an application to map users from NFS Exports to SMB shares? Is each site a separate LDAP or AD Domain?"
What functionality are your trying to understand in their environment and what is the comparable feature in Isilon OneFS?

• A. Identity Mapping and Authentication Sources
• B. User Management and AD Authentication
• C. Kerberos Infrastructure and Identity Management
• D. NFS Export Management and OneFS Cluster Management

Answer: A

NEW QUESTION 7
Which type of data is stored in Endurant Cache of an Isilon node?

• A. Write
• B. Volume
• C. Read
• D. Protection

Answer: A

NEW QUESTION 8
A customer has an SMB file directory with 375 TB of data on the primary cluster with a protection level of N+3:1. They want to replicate this directory to the secondary cluster. They are interested in the possibility of setting protection levels on the target cluster.
Which target directory protection level information can be provided?

• A. Does not need to match the source and is configured separately on the target cluster
• B. Must match the source and is configured separately on the target cluster
• C. Cannot be altered and is controlled by SyncIQ
• D. Can be altered by the command line interface and is controlled by SyncIQ

Answer: A

NEW QUESTION 9
A customer has an Isilon cluster with 6 nodes and a single 4-core CPU per node. The default configuration for SyncIQ workers per CPU core and SyncIQ workers per node per job limits are used.
How many SyncIQ workers are available for the Isilon cluster?

• A. 24
• B. 64
• C. 96
• D. 192

Answer: B

NEW QUESTION 10
Which Isilon feature increases available space by consolidating copies of identical blocks of data?

• A. SmartDedupe
• B. SmartQuotas
• C. Compliance
• D. FlexProtect

Answer: A

NEW QUESTION 11
A customer is able to see some performance metrics in the Isilon OneFS dashboard or by using CLI. Other performance metrics will require InsightIQ.
What will require a licensed version of InsightIQ?

• A. Capacity Trending
• B. Cluster Throughput
• C. CPU Usage
• D. Active Client Connections

Answer: B

NEW QUESTION 12
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

Answer: A

NEW QUESTION 13
You are designing a new Isilon system to store mobile device video clips. The files average 800MB in size and the application team tells you to plan for up to 15,000 new files per day. The product manager for this new service wants enough capacity for the first year and reminds you that response time for storing and retrieving the files is important for customer satisfaction.
The files will be accessed frequently for the first 48 hours after creation, and then very infrequently after seven days. You plan to use N+2:1 protection, and will configure a SmartPools policy to move inactive files to an archive tier within the cluster.
Which configuration best fits the project requirements?

• A. 4 x X200 nodes with SSD; 36 x NL400 nodes with 4TB drives
• B. 38 x X400 nodes with 4TB drives and SSD
• C. 4 x S200 nodes with SSD; 45 x NL400 nodes with 3TB drives
• D. 4 x X400 nodes with 1TB drives; 36 x NL400 nodes with 4TB drives

Answer: A

NEW QUESTION 14
Which process is used to protect file system structures against corruption through 32-bit CRC checksums?

• A. Media Scan
• B. Isilon Data Integrity
• C. File System Journal
• D. Dynamic Sector Repair

Answer: B

NEW QUESTION 15
An Isilon customer is reporting less than expected performance from the cluster and poor space utilization. The customer is using three X400 nodes with N+2:1 protection policy to host webserver log data. Upon further analysis, it is discovered that the webservers write log files 64 KiB in size. The log files are then accessed by an analytics application for reporting.
What should be done to increase write performance of the cluster?

• A. Change the protection scheme to a mirroring policy.
• B. Add A-Series performance accelerator nodes to the cluster.
• C. Add S-Series storage nodes to the cluster.
• D. Add SSDs to the X-Series nodes in the cluster.

Answer: A

NEW QUESTION 16
If a customer experiences a node failure while at 90% capacity, what is the fastest way of replacing the node in an Isilon cluster?

• A. Perform Disk Tango
• B. Perform a disk SmartFail
• C. Perform FlexProtect
• D. Perform a node SmartFail

Answer: D

NEW QUESTION 17
You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.
In general, how should the solution be presented to the customer?

• A. VNX for image cache; Isilon NL-Series nodes for image archive
• B. Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive
• C. Isilon NL-Series nodes for image cache and image archive
• D. VNX for image cache and image archive

Answer: A

NEW QUESTION 18
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec with a 30 days retention policy.
Which storage capacity would be the best suited to meet the required changes and utilize 65-75% capacity?

• A. 110 TB
• B. 80TB
• C. 140TB
• D. 50TB

Answer: A

NEW QUESTION 19
You are helping a customer create a cost-effective Isilon solution. The customer environment includes high IOPS-intensive, random access file-based applications.
Which Isilon storage node type will meet the customer's needs?

• A. S-Series
• B. NL-Series
• C. X-Series
• D. Performance Accelerator

Answer: A

NEW QUESTION 20
You are setting up SmartPools on the cluster. Which Microsoft Windows system tool will illustrate the difference in performance experienced by clients connecting to different tiers of storage?

• A. IOZone
• B. Iometer
• C. iostat
• D. MiTrend

Answer: A

NEW QUESTION 21
Which protocols are supported by Isilon OneFS for file access?

• A. NFS, HDFS, HTTP, SMB
• B. SMB, HTTP, SMTP, HDFS
• C. HDFS, NFS, iSCSI, SNMP
• D. FTP, NFS, SMB, FC

Answer: A

NEW QUESTION 22
When configuring Isilon SmartPools policies, which values are allowed for file pool policy storage destinations?

• A. Disk pools and node pools
• B. Disk pools
• C. SSD pools and tiers
• D. Node pools, tiers, and anywhere

Answer: A

NEW QUESTION 23
What is the relative latency of a cache hit to L1 cache compared to a hit to L2 cache in an Isilon cluster?

• A. 2x
• B. 5x
• C. 10x
• D. 25x

Answer: C

NEW QUESTION 24
You meet a customer for the first time. They explain that their current environment for NAS does not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?

• A. Where will the data center be installed?
• B. How many concurrent clients are accessing your NAS?
• C. How many users are in your Directory Services?
• D. Are you currently using a UPS for your main power source?

Answer: B

NEW QUESTION 25
If snapshots are configured for the InsightIQ datastore on Isilon and the datastore is reverted to a previous snapshot, what might be the result?

• A. InsightIQ datastore cannot be reverted
• B. InsightIQ database will have to be manually copied from the snapshot
• C. InsightIQ datastore could be corrupted
• D. InsightIQ will not recognize the older copy of the database

Answer: C

Explanation:
Do not use snapshots of the InsightIQ data store. If you revert a snapshot of the InsightIQ data store or modify the contents of the data store in any way, the InsightIQ data store might become corrupted.

NEW QUESTION 26
Which SmartConnect policies are used for workloads that have short lived connections such as HTTP and FTP?

• A. Connection count and round robin
• B. Round robin and CPU usage
• C. Throughput and CPU usage
• D. Throughput and connection count

Answer: C

NEW QUESTION 27
Which node type provides CPU, memory, and Fibre Channel connectivity?

• A. Backup Accelerator
• B. Performance Accelerator
• C. X-Series
• D. NL-Series

Answer: A

NEW QUESTION 28
What is the minimum size and the maximum size, respectively, of a single pre-Gen 6 node pool?

• A. 3 and 144
• B. 3 and 288
• C. 4 and 144
• D. 4 and 288

Answer: A

NEW QUESTION 29
Your customer has an existing Isilon cluster with seven X200 nodes. The cluster is used to store home directories and departmental shared folders. They are planning to deploy a new application that generates small block, synchronous writes.
Which OneFS 7 capability can help reduce latency for the new workload?

• A. Endurant Cache
• B. L2 Cache
• C. Solid State Drives
• D. Prefetcher

Answer: A

NEW QUESTION 30
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