Dell E20-020 Exam Practice Questions (P. 1)
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Question #1
An organization 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?
Which technology must be enabled between the host and leaf switches to provide the maximum throughput for a single data stream?
- AGeneric Network Virtualization Encapsulation
- BSpanning Tree Protocol
- CEqual-Cost Multi-Path Routing
- DMulti-Chassis Aggregation
Correct Answer:
A
Generic Network Virtualization Encapsulation (Geneve) is the peacemaking protocol drafted to unify VXLAN, NVGRE, and whatever other tunneling protocols emerge for network virtualization. Geneve doesnt exactly replace VXLAN and other protocols. Rather, it provides a common superset among them, so that outside software can provide hooks to Geneve rather than having to accommodate multiple encapsulation standards.
Note: NVGRE (Network Virtualization using Generic Routing Encapsulation) is a network virtualization technology that attempts to alleviate the scalability problems associated with large cloud computing deployments. It uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks. Its principal backer is Microsoft.
References:
https://www.sdxcentral.com/articles/news/intel-supports-geneve-unify-vxlan-nvgre/2014/09/
A
Generic Network Virtualization Encapsulation (Geneve) is the peacemaking protocol drafted to unify VXLAN, NVGRE, and whatever other tunneling protocols emerge for network virtualization. Geneve doesnt exactly replace VXLAN and other protocols. Rather, it provides a common superset among them, so that outside software can provide hooks to Geneve rather than having to accommodate multiple encapsulation standards.
Note: NVGRE (Network Virtualization using Generic Routing Encapsulation) is a network virtualization technology that attempts to alleviate the scalability problems associated with large cloud computing deployments. It uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks. Its principal backer is Microsoft.
References:
https://www.sdxcentral.com/articles/news/intel-supports-geneve-unify-vxlan-nvgre/2014/09/
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Question #2
An organization 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 segmentation be included in the design to support this requirement?
Why would network segmentation be included in the design to support this requirement?
- ASecure all traffic between the storage array and the hosts
- BEnable CHAP between the array and hosts
- CiSCSI traffic is not supported on networks with other types of traffic
- DEnable LUN masking capabilities of the array
Correct Answer:
D
LUN masking is a further constraint added to LUN zoning to ensure that only devices authorized to access a specific server can access the corresponding port. A logical unit number (LUN) is a unique identifier 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). https://searchstorage.techtarget.com/definition/LUN-masking
D
LUN masking is a further constraint added to LUN zoning to ensure that only devices authorized to access a specific server can access the corresponding port. A logical unit number (LUN) is a unique identifier 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). https://searchstorage.techtarget.com/definition/LUN-masking
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Question #3
An organization wants to provide backup services in the cloud. They have no backup infrastructure in place. The organization 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 months worth of backups onsite.
Which backup solution will meet these requirements?
Which backup solution will meet these requirements?
- ALocal backup
- BRemote backups
- CLocal backup with replication
- DLocal backups with cloud gateway
Correct Answer:
D
Cloud gateway allows EMC customers to move on-premise data from EMC arrays to public cloud storage providers. Clod gateway facilitate data migration from on-premises to a public cloud storage service to create a true hybrid cloud storage environment.
Cloud gateways such as Riverbeds SteelStore (formally known as Whitewater) can act as a local backup target for funneling data to a storage cloud for offsite storage.
References:
http://blogs.forrester.com/henry_baltazar/14-07-09-gateways_will_accelerate_data_migration_to_the_cloud
D
Cloud gateway allows EMC customers to move on-premise data from EMC arrays to public cloud storage providers. Clod gateway facilitate data migration from on-premises to a public cloud storage service to create a true hybrid cloud storage environment.
Cloud gateways such as Riverbeds SteelStore (formally known as Whitewater) can act as a local backup target for funneling data to a storage cloud for offsite storage.
References:
http://blogs.forrester.com/henry_baltazar/14-07-09-gateways_will_accelerate_data_migration_to_the_cloud
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Question #4
An organization has internal applications that require block, file, and object storage. They anticipate the need for multi-PB storage within the next 18 months. In addition, they would prefer to use commodity hardware as well as open source technologies.
Which solution should be recommended?
Which solution should be recommended?
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Question #5
In a cloud design, an architect has defined 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?
What should be included in the design deliverables to support this separate trust zone?
- AIsolated management network and a common super-user account
- BSeparate PKI and encrypted CMI portal access
- CSeparate authentication source and a preferred zone set
- DIsolated management network and a separate authentication source
Correct Answer:
D
D
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