ECS Practice Exam DES-1B21

When using the ECS Portal, what is the correct order of steps to integrate a CAS application with ECS? Set ACL on bucket to allow object user access Create CAS bucket using root or system admin account Set CAS bucket as default bucket for object user Generate CAS password and .PEA file for object user Enable CAS option in bucket

*Create CAS bucket using root or system admin account, *Enable CAS option in bucket, *Set ACL on bucket to allow object user access, *Generate CAS password and .PEA file for Object user, *Set CAS bucket as default bucket for object user.

A newly configured ECS system contains 16 nodes. How many fragments will each ECS node contain when a data chunk is broken up by erasure coding? 1 4 8 16

1

How many ECS appliances can be configured as target object stores, per CloudBoost appliance? 1 3 4 5

1

The ECS network solution for an organization is designed to provide a high availability and redundancy. The organization has created the needed port channels and has configured them in a Cisco vPC. What is the Dell EMC recommended minimum number of 10GbE uplinks required to be connected to the Cisco switches? 2 4 6 8

2

By default, how long does ECS retain data in monitoring history? 1 day 7 days 1 month 1 year

7 days

How many IP addresses are required for a U4000 (8 Nodes) with standard network configuration? 8 16 24 32

8

Which port needs to be opened between ECS and ESRS for registration of remote support? 21 443 9020 9443

9443

When creating a bucket using ECS S3 API D@RE key management, what happens when the key is missing from the header? A system generated key will be used instead Bucket creation will fail with an error to provide a key in the header ECS does not support external key management Encryption will not be enabled

A system generated key will be used instead

Which type of license is required to add a secondary ECS appliance to a federation? D@RE Replication Capacity Expansion

Capacity

A single VDC environment has multiple ECS racks. How does the Nile Area Network (NAN) communicate between the racks? 10Gb fiber network connection in turtle ports 51 or 52 Cat5/Cat6 network connection in turtle ports 51 or 52 10Gb fiber network connection in hare port 16 Cat5/Cat6 network connection in management port node 1

Cat5/Cat6 network connection in turtle ports 51 or 52

A company is running ECS in production mode with 5 nodes. They want to enable cold storage on that storage pool. What is a consideration? A specific cold storage license is required Cold storage requires a minimum of 8 nodes Cold storage can be enabled at any time Cold storage requires a minimum of 4 nodes

Cold storage requires a minimum of 8 nodes

What is the correct sequence of steps to configure a Data Domain Cloud Tier with ECS solution? 3 Import self-signed certificate 3 1 Configure storage for Data Domain Cloud Tier 1 4 Create Data Domain Cloud Units for ECS 4 2 Enable Data Domain Cloud Tier 2

Configure storage for Data Domain Cloud Tier, Enable Data Domain Cloud Tier, Import self-signed certificate, Create Data Domain Cloud Units for ECS

Which ECS configuration element must be created using an OpenStack Swift client? VDC Replication group Container Storage pool

Container

In a Data Domain Cloud Tier environment, which configuration task is required in Data Domain System Manager to enable ECS as a long-term retention device? Export self-signed/CA-signed root certificate Create Data Domain Cloud Units for ECS Enable Data Domain file system before enabling Cloud Tier Create a device in ECS to hold the Data Domain metadata

Create Data Domain Cloud Units for ECS

Which configuration task is optional in ECS when enabling NetWorker with CloudBoost and ECS integration? Create an object user account for CloudBoost access Generate a S3 secret key to add to the CloudBoost configuration Create a dedicated storage pool for CloudBoost storage Create a dedicated Namespace for CloudBoost storage

Create a dedicated storage pool for CloudBoost storage

How can an administrator avoid replicating a bucket and avoid using the global protection feature of ECS? A local replication group cannot be configured Choose local or remote protection from the drop-down list during bucket creation Disable ECS replication Create a replication group with the local VDC

Create a replication group with the local VDC

Which configuration task is required in ECS in order to enable Dell EMC Isilon Isilon CloudPools and ECS integration? Create a replication group for the dedicated CloudPools target Create a dedicated storage pool for CloudPools storage Create an object user account for CloudPools access Create a unique bucket to store CloudPools objects

Create an object user account for CloudPools access

In an environment with two or more VDCs, which operation is unavailable when network connectivity is interrupted between the VDCs? Read object Create namespace Write object Update object

Create namespace

An organization has a long-term plan to apply many S3 client applications that will integrate with ECS. The storage administrator is required to implement all the needed configurations for all the possible S3 client bucket-style addressing methods. What is the correct configuration for that purpose? Create the DNS wild card record, the host record for the load balancer, and the needed SSL certificate on the load balancer Create the DNS wild card record, the host record for the load balancer, and the base URL on ECS Create the DNS host record for the load balancer, the base URL on ECS, and the required S3 client configuration files Create the DNS wild card record for the load balancer, the needed SSL certificate on the load balancer, and the base URL on ECS

Create the DNS wild card record, the host record for the load balancer, and the base URL on ECS

What is required in order to enable the Access During Outage flag for a new ECS bucket? Enable Compliance option Disable Metadata Search option Disable File System option Set a Bucket Retention period

Disable File System option

An administrator is trying to configure a Cloud Unit in Data Domain System Manager for access to ECS and receives the following error: The Access Key ID you provided does not exist in our records. What needs to be checked? ECS Access key ID in the Object User Name configured in the ECS Portal ECS .PEA file in the Object User Name configured in the ECS Portal ECS Access key ID in the Management User Name configured in the ECS Portal ECS .PEA file in the Management User Name configured in the ECS Portal

ECS Access key ID in the Object User Name configured in the ECS Portal

A company has a Centera with ARM license installed. What should they consider when migrating to ECS using the CAS protocol? ECS CAS supports ARM without any additional license Centera ARM migration is not possible ECS CAS does not support ARM An additional ARM license is required for ECS CAS support

ECS CAS supports ARM without any additional license

How does ECS work with a Hadoop MapReduce job? ECS runs MapReduce jobs on the ECS nodes ECS can be analyzed using MapReduce without requiring movement of the data ECS works with the Hadoop cluster to move data in the most efficient way possible ECS is a client for Hadoop MapReduce

ECS can be analyzed using MapReduce without requiring movement of the data

You are configuring a NetWorker with CloudBoost solution using ECS as private cloud storage. What ECS information is required to create a cloud profile in the Dell EMC Cloud Portal? 1. ECS endpoints ECS access key ID ECS namespace name 2. ECS access key ID ECS community version ECS secret access key 3. ECS endpoints Cloud storage provider ECS bucket name 4. ECS endpoint ECS object user name ECS object user access key

ECS endpoint ECS object user name ECS object user access key

A company has deployed an ECS geo-federated setup. They need to read and write the accessible copy of the object if a temporary site failure occurs. What must they do during ECS configuration to satisfy this requirement? Create a Retention Policy in the namespaces Enable the Replicate to All Sites flag in the VDC Enable the Access During Outage flag in the bucket Enable Cold Storage in the storage pool

Enable the Access During Outage flag in the bucket

ECS Practice Exam DES-1B21 Correct answers Highlighted Yellow. ** This doesn't mean these will be the Cert exam questions, but it will help to study. 1. What technology is used in ECS to protect data from node faults and disk failures? Dual Parity RAID 1/0 Erasure Coding Data Mirroring

Erasure Coding

Which ECS layer provides clustering, health, software and configuration management, as well as upgrade capabilities and alerting? HAL Fabric Storage Engine Zookeeper

Fabric

Which ECS feature is responsible for protecting and sharing objects for global access? Storage Pool VDC Replication Group Federation

Federation

The ECS S3 API Put method is used to create a new object with the same name as an existing object. What is the expected behavior of the S3 operation? Warning will be generated Operation will stop Error will be generated File will be overwritten

File will be overwritten

When can D@RE be enabled on a bucket or namespace? Any time for bucket; only at creation of namespace Any time for both bucket and namespace Any time for namespace; only at creation of bucket For bucket and namespace, only at time of creation

For bucket and namespace, only at the time of creation

After which step in the ECS 3.0 implementation process is it necessary to reinstall ECS if node IP addresses need to be changed? ECS configuration IPs can be changed at any time Installing HAL Installing fabric

Installing HAL

How do ECS object users authenticate to the ECS OpenStack Swift Service when running the Version 3 protocol? Scoped token for v2 Simple token Keystone V3 Login and password

Keystone V3

What is required to obtain the license file for ECS? License Authorization Code Sales quote Client email address ECS Designer

License Authorization Code

ECS networking appears to be not working. You have VLANs set for data and replication networks. What should you do to confirm network connectivity? Run the sudo systemctl restart wicked wicked command Run the getrackinfo -n command and confirm that VLANs are set correctly Run the ip route list command and confirm that VLANs are set correctly Log into rabbit and hare and confirm that native mode is enabled

Log into rabbit and hare and confirm that native mode is enabled

An organization is designing a new S3 client that will integrate with ECS. They are evaluating the use of the EMC S3 API and the Amazon S3 API. The business need is to store images of their products along with their specifications and to have fast access to the images based on the stored specifications. The organization decides to use the EMC S3 API as it has the needed S3 API extension. What is that extension? File system enabled Bucket retention period Metadata search Byte range update

Metadata search

Which protocol allows Solaris and Linux servers to access storage on ECS? NFSv3 HDFS SMBv3 CIFS

NFSv3

Which type of data service is provided by ECS? CIFS Block NFSv3 SMB

NFSv3

A company decides to use Dell EMC Isilon CloudPools with ECS as the cloud storage target. During initial integration, they discover that the ECS namespace is inaccessible. What can be the reason for this issue? Incorrect cloud provider type selected Management user is configured as a User Admin Object local user is configured as namespace admin ECS bucket was already created

Object local user is configured as namespace admin

During troubleshooting, you can reach the ECS using SSH and ping. However, you cannot connect with any S3 tools. What is the most likely cause of this issue? NTP server is down Object ports (9020 - 9025) are not open Networking gateway is down License file was not installed

Object ports (9020 - 9025) are not open

An ECS 3.0 software installation with network separation has been successfully completed. The network team now realizes that public IP addresses were incorrectly assigned to ECS, and they want the IP addresses changed. Under what condition can IP addresses be changed for the current ECS installation? Only if VLAN separation is used on the current ECS Only if network separation is not used on the current ECS Only after first uninstalling the current ECS software At any time, without having to uninstall the current ECS 12.

Only after first uninstalling the current ECS software

Which type of load balancer can be configured to proactively conduct health checks of ECS nodes and remove unavailable nodes from the rotation? DNS round robin Manual IP HA proxy Physical/virtual

Physical/Virtual

What is the purpose of creating ECS Virtual Data Centers? Function as a container for object data Present nodes within a site as a single logical unit Define protection and availability of storage pools Expose storage pools from replication groups to applications

Present nodes within a site as a single logical unit

What does ECS S3 authentication with signature version 4 use to sign requests? Signing key Credential scope Secret key Access key ID

Signing key

Which NAN network topology is recommended for turtle switch connectivity between four or more ECS appliances? Star Daisy chain Ring Common bus

Star

company has decided to buy a new Dell EMC Isilon cluster and ECS appliance for their disaster recovery (DR) site. Which files are expected to be replicated to the DR site? Stubs and non-archived files Non-archived files only Archived files Stubs only

Stubs and non-archived files

What is a characteristic of ECS support for NFSv3 ACLs? Supports NFSv3 but has no support for ACLs Supports rich access control lists for NFSv3 Must be connected to an LDAP server or Active Directory Enforces permissions inherited from the S3 protocol

Supports rich access control lists for NFSv3

Compliance monitoring has been enabled for an ECS system. Under which conditions will a BAD event be received? DEGRADED and UNTRACKED UNKNOWN and NOT READY UNKNOWN and UNTRACKED BAD and NOT READY

UNKNOWN and UNTRACKED

What is a benefit of deploying an ECS Software-only solution? Uses Dell EMC hardware exclusively for high performance Uses commodity hardware that does not compromise enterprise storage capabilities Deployed as a virtual machine (VM) for lower total cost of ownership (TCO) Provides a single hardware and software solution offering

Uses commodity Hardware that does not compromise enterprise storage capabilities

What can be used for long-term reporting using historical data? ECS can report long-term historical data natively DPA with the ECS SolutionPack External Reporting tool ViPR SRM with the ECS SolutionPack

ViPR SRM with ECS SolutionPack

An application has initiated an object write request to a bucket in a single ECS VDC. What should be the next step taken by the ECS? Acknowledge the write to the application Write the object data to chunk Record the object location Write the object location

Write the object data to chunk

Which log file should be checked if an application using a .PEA file stops writing to the ECS? cassvc.log objheadsvc.log provisionsvc.log objcontrolsvc.log

cassvc.log

Which security property should you set in the core-site.xml file for ECS-ViPRFS integration with Hadoop? fs.defaultFS fs.permissions.umask-mode fs.viprfs.impl fs.vipr.installations

fs.permissions.umask-mode

You are installing ECS and are about to create the topology file. Which command (with appropriate options) should you use to determine the private.4 IP addresses of the system? ifconfig getrackinfo ipconfig ip addr list

getrackinfo

Which command Is used to verify network separation on the ECS rack prior to installing the ECS software? setrackinfo getrackinfo getrackinfo -n ifconfig -n

getrackinfo -n

An ECS installation is failing because of no DNS resolution. How should you determine which DNS servers are set for the entire ECS rack? getrackinfo -r cat /etc/resolve.conf ip addr list sudo nslookup $(hostname)

getrackinfo -r

Which command is used to install the fabric and object software for ECS? installer -operation INSTALL installer -operation INSTALL_HAL install -fabric sudo ./run.sh

installer -operation INSTALL

An ECS installation completed successfully with VIP Separation. An administrator wants to validate the configuration on the management interface. Which command should be executed in order to achieve the task? ip addr show public getrackinfo -a getrackinfo -s ip addr show public:mgmt.

ip addr show public:mgmt.

What network is represented below by 169.254.1.? ID,HOSTNAME,ADDRESS,LOCATION,RACK,SHELF r1n1,layton-red.sea.lab.emc.com,169.254.1.5,Cambridge,rack1,psnt1,shelf1 r1n2,logan-red.sea.lab.emc.com,169.254.1.6,Cambridge,rack1,psnt1,shelf1 r1n3,lehi-red.sea.lab.emc.com,169.254.1.7,Cambridge,rack1,psnt1,shelf1 r1n4,murray-red.sea.lab.emc.com,169.254.1.8,Cambridge,rack1,psnt1,shelf1 private.4 public.mgmt public private

private.4

What is a benefit of VLAN separation on ECS? No additional configuration for rabbit and hare switches is required Traffic is separated logically at the IP level VLAN separated and VIP separated networks can operate together Traffic is not visible to the entire network

traffic is not visible to the entire network

Which command should be used to check if the ECS disks have data? getrackinfo -a blkid fdisk -l viprexec cs_hal list vols

viprexec cs_hal list vols