Flashcards
Exame Cloud IV
Cards in this deck (9)
- 1ARP ProtocolWhen a host with address IP1 wants to communicate with a host with IP2, for the 1st time, it will:
• Prepare an ARP packet with: its own IP, and the IP of the other host
• Put the packet in a frame where the source address is its own MAC and
the destination address is all ones, and broadcast the frame
• Wait for a reply to arrive; the ARP-reply will carry the other host’s MAC
in the received frame “source MAC field” - 2Enumerate some properties about VLANSPartition the network into disjoint “areas”
• A broadcast is contained inside its area
• The same “networking plan” (same IP prefix) may be used in two or
more areas (provided we do not want them to communicate)
Each partition is invisible to others
• No way to access another “partition” except with a router - 3What are the main goals of a Virtual Network?Virtual networks are used for two main goals:
• Allow machines/services running in different locations to belong to the same network.
• Secure the communication between devices in a virtual network. - 4What are the main benefits of using a Hybrid Cloud approach?Sensitive, highly regulated, and mission-critical applications and
workloads or workloads with constant performance and
capacity requirements can run on private cloud infrastructure.
Less-sensitive, more-dynamic, or even temporary workloads
(such as development and test environments for a new
application) can run on the public cloud. - 5What is "Cloud Bursting"?Cloud bursting is an application deployment model in which an application runs in a private cloud or data center and bursts into a public cloud when the demand for computing capacity spikes.
- 6What is a Hybrid Monocloud?is hybrid cloud with one cloud provider —
essentially it is an extension of a single public cloud provider’s
software and hardware stack to the customer’s on-premises
environment so that the exact same stack runs in both
locations - 7What is Edge Computing?Edge computing is a new paradigm in which substantial computing and storage resources – known as cloudlets, micro
datacenters, or fog nodes – are placed at the Internet’s edge in close proximity to mobile devices or sensors - 8Enumerate some benefits of Edge ComputingHighly responsive cloud services . A cloudlet’s physical proximity
to a mobile device makes it easier to achieve low end-to-end latency, high bandwidth, and low jitter to services located on the cloudlet
Scalability via edge analytics . The cumulative ingress bandwidth demand into the cloud from a large collection of high-band- width IoT sensors, such as video cameras, is considerably lower if the raw data is analyzed on cloudlet
-Privacy-policy Enforcement
-Masking Cloud outages - 9Enumerate some of the challenges s of Edge Computing-What to run in the edge? What are the services and programming abstractions?
-How to integrate with the core of the cloud?
-How to decide which data can be discarded (anlytics)
-How to define what data can be propagated and where (privacy)
-How to guarantee that computation will not compromise privacy?
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- Flashcards on Exame Cloud IV, created by Bruno Penilo on 08/01/2020.
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- Bruno Penilo
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