EMC E20-020 Exam Dumps PDF

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2. Version: 8.0 Question 1 An organizaton plans to deploy a spine/leaf network topology to support a cloud design. Leaf switches will use layer-3 protocols to communicate with the spine switches. Hosts will each connect to two leaf switches using layer-2 protocols. Which technology must be enabled between the host and leaf switches to provide the maximum throughput for a single data stream? A. Generic Network Virtualizaton Encapsulaton B. Spanning Tree Protocol C. Equal-Cost Mult-Path Routng D. Mult-Chassis Aggregaton Aoswern A Generic Network Virtualizaton Encapsulaton (Geneve) is the peacemaking protocol drafed to unify VXLAN, NVGRE, and whatever other tunneling protocols emerge for network virtualizaton. Geneve doesn’t exactly replace VXLAN and other protocols. Rather, it provides a common superset among them, so that outside sofware can provide hooks to Geneve rather than having to accommodate multple encapsulaton standards. Note: NVGRE (Network Virtualizaton using Generic Routng Encapsulaton) is a network virtualizaton technology that atempts to alleviate the scalability problems associated with large cloud computng deployments. It uses Generic Routng Encapsulaton (GRE) to tunnel layer 2 packets over layer 3 networks. Its principal backer is Microsof. Explanaton: References: htps://www.sdxcentral.com/artcles/news/intel-supports-geneve-unify-vxlan-nvgre/2014/09/ Question 2 An organizaton wants to deploy a block storage in the cloud using a storage array that is accessible through the iSCSI protocol. The hosts support iSCSI. Why would network segmentaton be included in the design to support this requirement? A. Secure all trafc between the storage array and the hosts B. Enable CHAP between the array and hosts C. iSCSI trafc is not supported on networks with other types of trafc D. Enable LUN masking capabilites of the array Aoswern D LUN masking is a further constraint added to LUN zoning to ensure that only devices authorized to access

3. a specifc server can access the corresponding port. A logical unit number (LUN) is a unique identfer that designates individual hard disk devices or grouped devices for address by a protocol associated with a SCSI, iSCSI, Fibre Channel (FC) or similar interface. LUNs are central to the management of block storage arrays shared over a storage area network (SAN). Explanaton: References: htp://searchvirtualstorage.techtarget.com/defniton/LUN-masking Question 3 An organizaton wants to provide backup services in the cloud. They have no backup infrastructure in place. The organizaton has concerns about losing data if a site disaster occurs. They want to maintain control of backup data placement because of data privacy laws. Finally, they want to maintain at least one month’s worth of backups onsite. Which backup soluton will meet these requirements? A. Local backup B. Remote backups C. Local backup with replicaton D. Local backups with cloud gateway Aoswern D Cloud gateway allows EMC customers to move on-premise data from EMC arrays to public cloud storage providers. Clod gateway facilitate data migraton from on-premises to a public cloud storage service to create a true hybrid cloud storage environment. Cloud gateways such as Riverbed’s SteelStore (formally known as Whitewater) can act as a local backup target for funneling data to a storage cloud for ofsite storage. Explanaton: References: htp://blogs.forrester.com/henryybaltazar/14-07-09- gatewaysywillyaccelerateydataymigratonytoytheycloud Question 4 An organizaton has internal applicatons that require block, fle, and object storage. They antcipate the need for mult-PB storage within the next 18 months. In additon, they would prefer to use commodity hardware as well as open source technologies. Which soluton should be recommended? A. Cinder B. Hadoop C. Swif D. Ceph Aoswern C

4. OpenStack Swif Object Storage on EMC Isilon EMC Isilon with OneFS 7.2 now supports OpenStack Swif API. scalable (up to 30PB+ in a single namespace) and highly efcient (80%+ storage utlizaton) NAS platorm. Explanaton: References: htp://samuraiincloud.com/2014/11/22/openstack-swif-object-storage-on-emc-isilon/ Isilon is simple to manage, highly Question 5 In a cloud design, an architect has defned a separate trust zone for host management. The hosts will be running open source hypervisors. What should be included in the design deliverables to support this separate trust zone? A. Isolated management network and a common super-user account B. Separate PKI and encrypted CMI portal access C. Separate authentcaton source and a preferred zone set D. Isolated management network and a separate authentcaton source Aoswern D Question 6 Which aspect of the project defniton does the cloud design scope provide? A. Broad directons for the project B. Boundaries of what the project should and should not include C. Sales fgures that must be met when designing the project D. Specifc features or functons that must be included in the project Aoswern D Question 7 A cloud architect is designing a hybrid cloud for an organizaton. A requirement for this environment is that the private cloud user credental be trusted by both cloud provisioning APIs. Which type of authentcaton will meet this requirement? A. Federated authentcaton B. Asymmetric encrypton C. Symmetric encrypton D. Shared-key authentcaton Aoswern A A federated identty in informaton technology is the means of linking a person's electronic identty and atributes, stored across multple distnct identty management systems.

5. Explanaton: References: htps://en.wikipedia.org/wiki/Federatedyidentty

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