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DES-1B21 EMC Specialist – Implementation Engineer, Elastic Cloud Storage (ECS) Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your EMC DES-1B21 Specialist – Implementation Engineer, Elastic Cloud Storage (ECS) Exam certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 66 questions

What is a correct statement concerning the use of ECS as an LTR solution with DD Cloud Tier?

A.

There can be up to four cloud units that make up the cloud tier

B.

Backups are cloned to the cloud tier via the app-based policy

C.

Mission critical applications are backed up first to the DD cloud tier

D.

Data is moved directly from the active tier to ECS

How should a federation be configured when a primary ECS VDC already exists?

A.

First configure the secondary ECS as standalone and then add the VDC to the federation.

B.

First create the storage pool on the secondary ECS and then configure it on the primary ECS of the federation.

C.

First get the VDC access key from the primary ECS of the federation and then add it to the secondary VDC.

D.

Add the secondary VDC to the federation during fabric and HAL installation.

Which user role has access to all areas of the ECS portal?

A.

System Administrator

B.

Namespace Administrator

C.

Tenant Administrator

D.

Power user

In the Storage Service Layer, which distributed shared service runs on each ECS node to manage transactions and ensure data is committed?

A.

Unstructured Storage Engine

B.

Server-side encryption

C.

Erasure coding

D.

ECS media-data management

How do ECS object users authenticate to the ECS OpenStack Swift Service when running the Version 1 protocol?

A.

.PEA file

B.

Login and password

C.

Scoped token

D.

Simple token

When planning for a multi-site ECS installation, what is the maximum network latency between sites?

A.

100 ms

B.

500 ms

C.

1,000 ms

D.

5,000 ms

How are files locked by ECS with NFSv3 enabled?

A.

ECS runs pNFS as does any NFSv4 server

B.

ECS globally locks files from any node at any site

C.

The NFSv3 clients do file locking

D.

ECS runs NLM as does any NFSv3 server

Which ECS Advanced Retention Management (ARM) feature enables applications to specify a retention period that will trigger when the CAS application receives a specified condition?

A.

Litigation Hold

B.

Extended Retention Period

C.

Event Based Retention

D.

Min/Max Governor

Which switch is used to daisy-chain three or fewer ECS racks?

A.

Customer supplied

B.

Rabbit

C.

Hare

D.

Turtle

What services are reachable from all nodes and must be included in every ECS data center?

A.

NTP and SNMP

B.

DHCP and PXE

C.

DNS and NTP

D.

SMTP and FTP

An organization wants to implement a federated ECS between two sites and use Dell EMC Isilon CloudPools functionality to archive data to ECS for long term retention. They are planning to implement ECS with network separation.

What could be deployed optionally in this implementation?

A.

DNS entries

B.

Static routes configuration

C.

Static IP addresses for each of the ECS nodes

D.

Load balancer configuration

A company has removed the VDC from the replication group and is no longer able to add it back. What is the cause of this issue?

A.

The same VDC cannot be added back to the replication group, it must be given another name

B.

The VDC cannot be added back to the existing replication group, a new replication group must be created for the VDC

C.

The same VDC can be added back to the replication group, but only before failover processing is completed successfully

D.

Removing the VDC from the replication group initiates failover processing for permanent failures

Which tab would a user select in the ECS portal to configure ESRS?

A.

Settings

B.

Manage

C.

Dashboard

D.

Connections

Which command should be used to wipe the data disks to prepare an ECS rack for fabric, and HAL installation?

A.

format

B.

clean_disks

C.

sysdisk

D.

partition

Which NAN network topology will suffer from a split-brain condition if a single connection between turtle switches is lost?

A.

Daisy chain

B.

Common bus

C.

Star

D.

Ring

In an environment with two or more VDCs, which operation is unavailable when network connectivity is interrupted between the VDCs?

A.

Read object

B.

Update object

C.

Write object

D.

Create bucket

You are creating a VDC during the ECS configuration process. You get the following error.

Error 7000 (http: 500): An error occurred in the API Service

You check the system and this is what you see:

Storage Pool status: Ready

Nodes: Ready to use

Licenses: OK

What can be causing this error?

A.

You have not created the system storage pool

B.

You did not want 10 to 15 minutes after creating the storage pool

C.

The VDC access key was typed incorrectly

D.

The endpoints were not supplied as a comma-separated list

You are configuring an ECS system to be used for private cloud storage in a Data Domain Cloud Tier environment. You want to enable higher storage efficiency for archival data in the storage pool to support the backup solution.

What is the recommended configuration?

A.

8 nodes per storage poolCold Storage enabled

B.

4 nodes per storage poolFederated VDC

C.

8 nodes per storage poolDedicated namespace

D.

4 nodes per storage poolGlobal replication group

By default, which file contains ECS information for configuring ESRS?

A.

provision.txt

B.

topology.txt

C.

customer.json

D.

MACHINES

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Total 66 questions
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