Submitted by: Jennifer Cheek
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?
A. Generic Network Virtualization Encapsulation
B. Spanning Tree Protocol
C. Equal-Cost Multi-Path Routing
D. Multi-Chassis Aggregation
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.
Explanation:
References:
https://www.sdxcentral.com/articles/news/intel-supports-geneve-unify-vxlan-nvgre/2014/09/
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?
A. Secure all traffic between the storage array and the hosts
B. Enable CHAP between the array and hosts
C. iSCSI traffic is not supported on networks with other types of traffic
D. Enable LUN masking capabilities of the array
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).
Explanation:
References:
http://searchvirtualstorage.techtarget.com/definition/LUN-masking
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?
A. Local backup
B. Remote backups
C. Local backup with replication
D. Local backups with cloud gateway
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.
Explanation:
References:
http://blogs.forrester.com/henry_baltazar/14-07-09-gateways_will_accelerate_data_migration_to_the_cloud
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?
A. Cinde
B. Hadoop
C. Swift
D. Ceph
Answer: C
OpenStack Swift Object Storage on EMC Isilon
EMC Isilon with OneFS 7.2 now supports OpenStack Swift API. Isilon is simple to manage, highly scalable (up to 30PB+ in a single namespace) and highly efficient (80%+ storage utilization) NAS platform.
Explanation:
References:
OpenStack Swift Object Storage on EMC Isilon
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?
A. Isolated management network and a common super-user account
B. Separate PKI and encrypted CMI portal access
C. Separate authentication source and a preferred zone set
D. Isolated management network and a separate authentication source
Answer: D
Question: 6
Which aspect of the project definition does the cloud design scope provide?
A. Broad directions for the project
B. Boundaries of what the project should and should not include
C. Sales figures that must be met when designing the project
D. Specific features or functions that must be included in the project
Answer: D
Question: 7
A cloud architect is designing a hybrid cloud for an organization. A requirement for this environment is that the private cloud user credential be trusted by both cloud provisioning APIs. Which type of authentication will meet this requirement?
A. Federated authentication
B. Asymmetric encryption
C. Symmetric encryption
D. Shared-key authentication
Answer: A
A federated identity in information technology is the means of linking a person’s electronic identity and attributes, stored across multiple distinct identity management systems.
Explanation:
References:
https://en.wikipedia.org/wiki/Federated_identity
About the Author: Test Information:Total Questions: 64Test Number: E20-020Vendor Name: EMCCert Name: EMCCATest Name: Cloud Infrastructure Specialist Exam for Cloud ArchitectsOfficial Site:
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