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E20-260 Sample Questions Answers

Questions 4

What is the recommended protection to be used when creating a VPLEX Logging Volume?

Options:

A.

RAID-1

B.

Raid-C

C.

RAID-0

D.

Mapping

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Questions 5

Which type of statistics are used to track latencies, determine median, mode, percentiles, minimums and maximums?

Options:

A.

Buckets

B.

Counters

C.

Readings

D.

Monitors

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Questions 6

A customer is verifying the host environment before scheduling a VPLEX NDU. According to EMC best practices, which PowerPath load-balancing policy is applied by default to all platforms?

Options:

A.

Adaptive

B.

RoundRobin

C.

LeastIO

D.

StreamIO

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Questions 7

A customer wants to add a mirror to a VPLEX Local RAID-0 device.

Which RAID type is created after the command "device attach-mirror"?

Options:

A.

RAID-0

B.

RAID-S

C.

RAID-1

D.

RAID-C

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Questions 8

After registering Cluster-2 with ESRS during a VPLEX Metro cluster build, what is the next step to perform before the cluster is successfully built?

Options:

A.

Complete EZ-Setup Wizard on Cluster-1

B.

Complete EZ-Setup Wizard on Cluster-2

C.

Configure WAN connections on Cluster-1

D.

Configure WAN connections on Cluster-2

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Questions 9

Refer to the exhibit.

You have created a Distributed Device in a VPLEX Metro. You want to confirm you have chosen the correct volumes before performing a mobility job across clusters. You will be moving the device to cluster 1.

Which object will be the source for this operation?

Options:

A.

extent_Symm0841_03A7_1

B.

DD_8_32012Nov26_183659

C.

Symm0841_03A7

D.

DD_7_3

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Questions 10

Which VPLEX component can determine the difference between a partition and a site failure of a VPLEX Metro configuration?

Options:

A.

VPLEX Witness

B.

Management Server

C.

Cluster 1 Engine 1

D.

Consistency Group

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Questions 11

An EMC customer wants to add a mirror to a VPLEX Local RAID 0 device. Which RAID type is created after the device attach-mirror command is issued?

Options:

A.

RAID 1

B.

RAID 0

C.

RAID S

D.

RAID C

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Questions 12

You have added a new storage array into VPLEX, but it does not see it. Which VPLEX command will display the new storage array?

Options:

A.

vplexcli./clusters/cluster-/storage-elements/storage-arrays/array re-discover

B.

vplexcli:/array claim -s

C.

vplexcli:/clusters/cluster-//storage-elements/storage-arrays>array used-by-array

D.

vplexcli:/connectivity validate-be

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Questions 13

Refer to the exhibit.

You are preparing to upgrade a VPLEX Metro system. You ran the version command to begin the verification process and received the output shown.

What is the most likely reason for the warning?

Options:

A.

The Metadata volume is in an NDU state.

B.

The Cluster Witness is at the wrong version.

C.

The Management Server is at the wrong version.

D.

The directors are in an NDU state.

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Questions 14

What is the role of the port with the WWN 5000144270061010 on a VS2 engine?

Options:

A.

Back-end

B.

Front-end

C.

Local-COM

D.

WAN-COM

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Questions 15

Exhibit:

Which VPLEX object contains virtual-to-physical mapping information and must be stored on multiple arrays?

Options:

A.

Metadata volume

B.

Logging volume

C.

Virtual volume

D.

Director volume

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Questions 16

Which command script must be executed when upgrading a small VPLEX to medium VPLEX?

Options:

A.

VPlexadmin add-engines

B.

director add

C.

VPlexadmin set

D.

VPlexadmin add-directors

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Questions 17

Refer to the exhibit.

You are planning to perform data mobility between VPLEX Clusters using the GUI. What mobility job options do you have?

Options:

A.

create, stop, activate, monitor, pause, throttle and terminate

B.

create, activate, fracture, resync, monitor, pause, and commit

C.

create, cancel, suspend, monitor, pause, throttle, and terminate

D.

create, remove, cancel, monitor, pause, throttle, and commit

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Questions 18

Refer to the exhibit.

You have created a Distributed Device in a VPLEX Metro. You want to confirm the volumes before performing a mobility job within the cluster. You will be moving the device to cluster 1.

Which object will be the source for this operation?

Options:

A.

extent_Symm0841_03A7_1

B.

DD_8_32012Nov26_183659

C.

Symm0841_03A7

D.

DD_7_3

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Questions 19

A customer has a VPLEX Metro/GEO environment and is requesting that the VPLEX Witness be installed.

The requirements for the Witness are:

  • One vCPU
  • 512MB ram
  • 2.5GB storage space

What platform type is supported?

Options:

A.

64bit ESX4.0 and above

B.

32/64bit ESXi 5.0

C.

64bit MS Hyper-V 2012

D.

VMware Workstation 9.0 and above

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Questions 20

How can you throttle the migration rate for VPLEX?

Options:

A.

By configuring the maximum copy speed

B.

By setting the copy policy

C.

This is done automatically without any user action

D.

By dynamically changing the I/O write size for copying

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Questions 21

What is the EMC best practice for the optimum number of active back-end storage paths per director for each LUN presented to VPLEX?

Options:

A.

4 paths

B.

2 paths

C.

8 paths

D.

16 paths

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Questions 22

Which command allows you to navigate vplexcli history by string?

Options:

A.

CTRL + R string

B.

history find string

C.

history | grep string

D.

UP arrow key

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Questions 23

Refer to the exhibit.

What is the module at IOM A0 used for?

Options:

A.

Director A Back-end Connectivity

B.

Director A WAN COM Connectivity

C.

Director A Front-end Connectivity

D.

Director A Local Com Connectivity

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Questions 24

During an installation, the physical equipment inspection reveals an ESX host used for VPLEX Witness is located in the same rack as VPLEX cluster 1 Engine. What needs to be done?

Options:

A.

The VPLEX Witness server must be placed in a separate failure domain.

B.

VPLEX Witness server must be in a separate cabinet in the same data center.

C.

VPLEX Witness must exist on an HA ESX Host

D.

VPLEX Witness must exist on an FT ESX Host

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Questions 25

Refer to the exhibit.

You have opened the VPLEX Unisphere Manager to validate the health of the system.

What is the most likely reason for the Operational Status indicator?

Options:

A.

The VPLEX Witness has detected a WAN link failure.

B.

A component is in a degraded state in the cluster.

C.

Cluster-1 has lost management IP connection to cluster-2

D.

The cluster-1 management server has failed.

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Questions 26

Which element does VPLEX Witness require?

Options:

A.

Virtual Volume

B.

Distributed Volume

C.

Distributed Device

D.

Consistency Group

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Questions 27

What is the maximum supported latency for a VPLEX Metro implementation?

Options:

A.

2 ms

B.

50 ms

C.

5 ms

D.

15 ms

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Questions 28

In the distributed cache architecture, how much local cache does a VS2 director have?

Options:

A.

36GB

B.

64GB

C.

32GB

D.

72GB

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Questions 29

Do virtual volumes need to be taken off-line prior to upgrading VPLEX software, and why or whynot?

Options:

A.

Yes, to preserve data integrity

B.

Yes, because the host-based multi-pathing software provides direct access during the upgrade

C.

No, because VPLEX software can be upgraded non-disruptively

D.

No, because the upgrading can be undone

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Questions 30

Which protocols are required for a service laptop to communicate with and maintain a VPLEX environment?

Options:

A.

SNMP and FTP

B.

SSH and SCP

C.

SCP and Telnet

D.

SSH and SSL

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Questions 31

A customer created a local RAID-0 virtual volume and decided that they require increased data protection by introducing a distributed virtual volume. What is the best method to convert this virtual volume without introducing any downtime to the host?

Options:

A.

Attach a device mirror

B.

Create a data mobility job

C.

Encapsulate the volume

D.

Enable remote access

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Questions 32

Click on the calculator in the upper left corner. How much distributed storage can be managed by a 20 GB logging volume?

Options:

A.

Up to 640 TB

B.

Up to 20 TB

C.

Up to 320 TB

D.

Up to 200 TB

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Questions 33

How does VPLEX access back-end arrays?

Options:

A.

Through Virtual Targets

B.

Through Virtual Initiators

C.

Through the front-end ports on the Management station

D.

VPLEX provides storage through its own DAE(s)

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Questions 34

What three elements are part of the VPLEX Storage View?

Options:

A.

VPLEX FE Port

Top-Level Device

Host IP address

B.

VPLEX FE Port

Initiator Port

Virtual Volume

C.

VPLEX BE Port

VPLEX FE Port

Virtual Volume

D.

VPLEX BE Port

Initiator Port

Virtual Volume

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Questions 35

What is the EMC best practice for the optimum number of back-end storage paths per director presented to a LUN?

Options:

A.

4 paths

B.

2 paths

C.

8 paths

D.

16 paths

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Questions 36

Refer to the exhibit.

Reference the message type shown at point "1".

What type of response will be sent back to the SNMP management server from the SNMP Agent?

Options:

A.

A poll response containing requested data

B.

A trap response containing requested data

C.

A poll response that initiates a trap response

D.

A trap response containing all MIB data

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Questions 37

Refer to the exhibit.

What is the function of the two highlighted VPLEX VS2 modules?

Options:

A.

Back-end connectivity

B.

Front-end connectivity

C.

WAN-COM connectivity

D.

Local-COM connectivity

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Questions 38

Following EMC best practices, what information is required to register a VPLEX on an ESRS portal?

Options:

A.

Site ID; cluster TLA serial number; Management server eth3 IP address

B.

License ID; engine serial number; Management server eth3 IP address

C.

Site ID; engine serial number; Management server eth3 IP address

D.

Site ID; cluster TLA serial number; Witness IP address

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Questions 39

In a VPLEX Metro with Witness, which command returns the remote VPLEX management IP address and the witness public IP address?

Options:

A.

shell command sudo /usr/sbin/ipsec status

B.

vplexcli command cluster status

C.

shell command /sbin/ifconfig

D.

vplexcli command VPlexadmin show

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Questions 40

During the installation of a VPLEX Local, the command ‘configuration system-setup’ is issued. What is accomplished by this command?

Options:

A.

Launches EZ-setup Wizard

B.

Configures EMC system reports

C.

Exposes back-end storage to cluster

D.

Creates a logging volume

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Questions 41

Refer to the exhibit.

You are preparing to perform an upgrade on an unconfigured VPLEX Metro. When you run the ndu pre-check command, it indicates that it has failed and there are no first upgraders. In your troubleshooting, you run the version -a command.

Based on the output, what is the reason for the failure?

Options:

A.

Directors are not connected.

B.

health-check --full was not run

C.

Directors are at incompatible code levels

D.

ndu pre-check --force flag was not used

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Questions 42

medium-sized VPLEX clusters are connected via IP with a round-trip latency of approximately 35 ms.

What type of configuration is this?

Options:

A.

Geo

B.

Metro

C.

Local

D.

Global

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Questions 43

Which information is required to configure ESRS for VPLEX?

Options:

A.

VPLEX model type Top Level Assembly Site ID IP address of the Management Server public port

B/Top Level Assembly Site ID IP address of the Management Server public port Configuration (1, 2 or 4 Engines)

B.

VPLEX model type Level Assembly customer contact IP address of the Management Server public port

C.

VPLEX model type Site ID IP address of the Management Server public port Primary Customer contact

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Questions 44

Refer to the exhibit.

A customer needs to provision storage to a host on Cluster 1, but there is no additional local array capacity to allocate. How could the customer facilitate assigning storage to the Cluster 1 host from an array locally connected to Cluster 2?

Options:

A.

Enable remote access for a Cluster 2 virtual volume.

B.

Add a remote mirror to a Cluster 2 virtual volume.

C.

Create a distributed device from a virtual volume on Cluster

D.

Add a virtual volume from Cluster 2 to a distributed consistency group.

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Questions 45

Refer to the exhibit.

You have created a Distributed Device in a VPLEX Metro system. Which VPLEX Object can be placed in a Storage View for Cluster-1?

Options:

A.

DD_8_3_vol

B.

DD_8_32012Nov26_183659

C.

Symm0841_03A7

D.

extent_Symm0841_03A7_1

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Questions 46

A customer has a VPLEX Metro configuration across two data centers 200 km apart. During an overnight backup, the WAN-COM link between the two data centers fails.

Which volume allows for future incremental re-synchronization with the remote mirror once the link is restored?

Options:

A.

Logging Volume

B.

Storage Volume

C.

Metadata Volume

D.

Virtual Volume

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Questions 47

A service provider has implemented a VPLEX Metro cluster without the VPLEX Witness, but has implemented a static rule set. The static rule set has been set to "Cluster-2 detaches". A Windows host in the Cluster-1 data center uses a distributed volume. The inter-cluster link fails. What happens?

Options:

A.

1. VPLEX Suspends I/O to all distributed devices on both clusters

2. VPLEX starts a delay timer

3. If connectivity is not restored within the timer expiration period, then VPLEX will resume I/O on Cluster-2 and keep I/O suspended on Cluster-1

B.

1. VPLEX starts a delay timer

2. VPLEX suspends I/O to all distributed devices on both clusters

3. If connectivity is not restored within the timer expiration period, then VPLEX resumes I/O on Cluster-2 and keeps I/O suspended on Cluster-1

C.

1. VPLEX starts a delay timer

2. VPLEX suspends I/O to all distributed devices on both clusters

3. If connectivity is not restored within the timer expiration period, then VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2

D.

1. VPLEX suspends I/O to all distributed devices on both clusters

2. VPLEX starts a delay timer

3. If connectivity is not restored within the timer expiration period, then VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2

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Questions 48

When configuring a RAID-1 logging volume, what flags must be used in the command line?

Options:

A.

-d -n -g -e

B.

-n -d –e

C.

-n -g -e

D.

-d -g -e

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Questions 49

What device types can be created in a VPLEX environment?

Options:

A.

RAID-5, RAID-6, RAID-C

B.

RAID-0, RAID-1, RAID-C

C.

RAID-3, RAID6 (6+2), RAID6 (14+2)

D.

RAID5 (3+1), RAID5 (7+1), RAID-S

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Questions 50

You are preparing a site for a large Metro VPLEX cluster. The storage administrator wants to prepare the storage network configuration and needs to ensure easy troubleshooting of storage path faults.

How many WAN-COM zones per fabric will need to be created?

Options:

A.

16

B.

12

C.

8

D.

32

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Questions 51

A new VPLEX cluster has been configured. However, you are unable to register any host initiators. After verifying that the host has been properly zoned to the VPLEX cluster, you still cannot register them. What is a possible cause?

Options:

A.

Front end ports have not been enabled.

B.

Back-end ports have not been enabled.

C.

Back-end arrays have not presented any LUNs.

D.

Storage View for host has not been created.

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Questions 52

In a VPLEX Metro/Geo, which vplexcli command can help to troubleshoot directors latency and routing issues to other Cluster directors?

Options:

A.

director fc-port-stats

B.

connectivity director

C.

director tracepath

D.

VPlexadmin show

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Questions 53

What is the purpose of VPLEX Witness in a Metro environment?

Options:

A.

Observe the state of the clusters, Distinguish link outages, Intercluster failures, Resume or suspend I/O

B.

Prevent cluster link failure, Stop I/O transfer, Split consistency groups, Failover consistency groups

C.

Send notifications, Pause I/O transfer, Initiate vault dump, Failover consistency groups

D.

Observe state of the clusters, Suspend I/O, Execute health-check, Resume I/O

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Questions 54

You have added a new storage array to your environment, but VPLEX, does not see it. Which VPlexcli command will display the new storage array?

Options:

A.

clusters/cluster-/storage-elements/storage-arrays/array re-discover

B.

/array claim -s

C.

/clusters/cluster-//storage-elements/storage-arrays>array used-by-array

D.

connectivity validate-be

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Questions 55

How much distributed storage can be managed by a 20 GB logging volume?

Options:

A.

Up to 960 TB

B.

Up to 320 TB

C.

Up to 640 TB

D.

Up to 1.2 PB

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Questions 56

You are using VPLEX Unisphere to perform management functions in your environment. You are tasked with creating several volume migrations to a new storage array.

What tab should you use to perform this migration?

Options:

A.

Provision Storage

B.

Mobility Central

C.

System Status

D.

Performance Dashboard

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Questions 57

Refer to the exhibit.

Which two modules are used for WAN-COM connectivity?

Options:

A.

C and G

B.

C and D

C.

D and E

D.

G and H

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Questions 58

You are configuring a single engine VPLEX Metro to support both local and distributed volumes. The VPLEX will utilize 10Gb WAN-COM modules in a routed configuration.

According to EMC best practices, what is the minimum number of subnets and IPs required?

Options:

A.

7 subnets; 15 IPs

B.

5 subnets; 15 IPs

C.

3 subnets; 7 IPs

D.

3 subnets; 30 IPs

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Questions 59

Following EMC best practices, which information is required to register a VPLEX on an ESRS portal?

Options:

A.

Site ID; cluster TLA serial number; Management server eth3 IP address

B.

License ID; engine serial number; Management server eth3 IP address

C.

Site ID; engine serial number; Management server eth3 IP address

D.

Site ID; cluster TLA serial number; Witness IP address

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Questions 60

Refer to the exhibit.

The customer has not followed EMC best practices when cabling their VS2 VPLEX engine. You are asked how to re-cable the engine to adhere to best practices. What is your response?

Options:

A.

Swap port 00 with port 01 of module A0-FE and B0-FE.

B.

Swap port 00 with port 01 of module A1-BE and B1-BE.

C.

Swap port 02 with port 03 of module A0-FE and B0-FE.

D.

Swap port 02 with port 03 of module A1-BE and B1-BE.

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Questions 61

Which unique logical identifier is used when determining the relationship between a virtual volume and the back-end storage array?

Options:

A.

VPD ID

B.

WWPN

C.

LUN ID

D.

FCID

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Questions 62

A customer has purchased a dual engine VPLEX Metro cluster. During installation, there are not enough free SAN ports to connect all WAN-COM ports to the SAN. What is the recommended approach?

Options:

A.

The customer must provide additional SAN ports or acquire additional SAN ports to connect all WAN-COM ports of both VPLEX engines to the SAN.

B.

The customer must connect the WAN-COM ports of the first engine only and disable the second engine from the VPLEX CLI.

C.

It is sufficient to connect the WAN-COM ports of either engine 1 or 2 because redundancy is provided by leveraging two separate SAN fabrics.

D.

The customer must connect the WAN-COM ports of the first engine only and disable the second engine from the Unisphere for VPLEX GUI.

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Questions 63

What can you use to generate a list of VPLEX fabric initiator and target identifiers?

Options:

A.

Atlas WWN Tool

B.

Solve Desktop

C.

Support.EMC.com

D.

Unisphere for VPLEX

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Exam Code: E20-260
Exam Name: VPLEX Specialist Exam for Implementation Engineers
Last Update: May 15, 2024
Questions: 210
$64  $159.99
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