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Cloud Computing > Chapter 5 > Flashcards

Chapter 5 Flashcards

1
Q

allow for the remote provisioning of IT resources and support ubiquitous network access

A

Internetworks/internet

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2
Q

Authority for supervising and coordinating internet comms

A

Internet Corporation for Assigned Names and Nummbers

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3
Q

Worldwide connectivity is enables through … tiers

A

3

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4
Q

Core tier 1

A

made of large scale international cloud providers

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5
Q

Tier 2

A

Regional providers

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6
Q

Two fundamental components used to construct the internetworking architecture

A

connectionless packet switching
router based interconnectivity

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7
Q

Connectionless packet switching

A

End-to-end (sender-receiver pair) data flows are divided into packets of a limited size that are received and processed through network switches and routers, then queued and forwarded from one intermediary node to the next.(Explain how packets in general internet works)

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8
Q

Router-Based Interconnectivity

A

Packets are processed and forwarded through the network topology using routers

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9
Q

Router

A

device connected to multiple networks to forward packets

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10
Q

Salient cloud feature that applies to end user functionality

A

centralized IT resources can be accessed using the same network protocol regardless of whether they reside inside or outside the corporate network

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11
Q

on-premise vs cloud based it resource

A
  • internal user access using corporate network in on-premise while uses internet in cloud based
  • if users are roaming they access resources using corporate internet connection in on-premise while they use the cloud providers internet connection in cloud based
  • same for external users as the second condition
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12
Q

End-to-end bandwidth is determined by

A

transmission capacity of shared data links at intermediary nodes

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13
Q

Latency/Time delay

A

amount of time it takes a packet to travel from one node to the other

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14
Q

an enabling technology for the internet of vehicles

A

mobile edge computing

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15
Q

Autonomous vehicular edge

A

distributed vehicular edge computing technology which enables sharing of nearby car resources via v2v

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16
Q

… enables effective sharing of all obtainable computing resources

A

HVC

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17
Q

… and … are key requirements for reducing investment and operation costs

A

Modularity and standardization

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18
Q

Autonomic Computing

A

is the ability of a system to be self-managing which means it’s expected to react to change without human intervention

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19
Q

Common features of self-management

A

Self-configuration
Self-optimization
Self-healing
Self-protecting

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20
Q

Data center facilities

A

custom-designed locations that are outfitted with specialized computing, networking and storage equipment.

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21
Q

Much of the heavy processing in data centers is often executed

A

by standardized commodity servers that have substantial computing power and storage capacity

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22
Q

Storage systems involve the following technologies

A

Hard disk arrays
I/O caching
Hot swappable hard disks
storage virtualization
fast data replication

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23
Q

saving a virtual machine’s memory into a hypervisor-readable file for future reloading

A

snapshotting

24
Q

copying virtual or physical hard disk volumes and partitions

A

volume cloning

25
Q

robotized tape libraries

A

used as backup and recovery systems that typically rely on removable media

26
Q

Five network subsystem of datacenter network infrastructure

A

carrier and external network interconnection
web-tier load balancing and acceleratin
lan fabric
san fabric
nas gateways

27
Q

….interconnection is usually comprised of backbone routers that provide routing between external WAN connections and the data center’s LAN, as well as perimeter network security devices such as firewalls and VPN gateways

A

Carrier and External Network interconnection

28
Q

…comprises Web acceleration devices and layer 7 switching devices

A

Web-Tier load balancing and acceleration

29
Q

LAN Fabric

A

constitutes the internal LAN and provides high performancec redundant connectivity

30
Q

supplies attachement points for NAS based storage devices and implements protocol conversion

A

NAS Gateways

31
Q

…consists of technologies that automatically provide runtime resources for applications that can be deployed without underlying configuration

A

serverless environments

32
Q

a centrally managed group of nodes connected through network to process work parallely

A

cluster

33
Q

NoSQL clustering provides storage devices that are

A
  • Scalable
  • Available
  • Fault-tolerant
  • Fast I/O
34
Q

Principal features of NoSQL storage

A
  • Schemaless
  • Scale out > Scale up
  • Highly available
  • Low oper cost
  • Eventual consistency
  • Auto sharding and replication
  • Polyglot persistence
35
Q

approach of persisting data using different storage tech

A

polyglot persistence

36
Q

is a conversion process that translates unique IT hardware into emulated software copies

A

Virtualization

37
Q

Server consolidation

A

virtualization software allows multiple virtual servers to be simultaneously created in the same virtualization host on one physical server

38
Q

Salient features of virtualization tech

A

Ease of manipulation and replication

39
Q

Virtualization tech enables

A
  • Creation of vms with common config for instant deployments
  • increased agility in migration and deployment of vm
  • roll back capabilities by using snapshots to save state
  • business continuity with efficient backup and restoration
40
Q

Operating system-based virtualization.

A

installation of virtualization software in a pre-existing operating system

41
Q

Operating system based virtualization issues

A

Host OS consumes resources
Hardware calls from vms need to traverse a lot of layers
License requirements for both host and guest OS

42
Q

Main concern in OS based virtualization

A

Processing overhead needed to run virtualization software and Host OS

43
Q

Main issues of Hardware based virtualization

A

compatibility with hardware devices

44
Q

method of creating and using applications without operating system dependency.

A

Application virtualization

45
Q

collectively manage virtual IT resources and rely on a centralized management module

A

Virtualization Infrastructure Management(controller)

46
Q

Para-virtualization

A

technique used to rectify overhead issue of virtualization by providing a software interface to the vm that isn’t identical to the underlying hardware

47
Q

Drawback of para-virtualization

A

need to adapt the guest OS to the para-virtualization API

48
Q

How can hardware incompatibility be resolved

A

using established commodity hardware platforms and mature virtualization software products

49
Q

Chx of multitenant apps

A
  • Usage isolation
  • Data security
  • Recovery
  • Application Upgrades
  • Scalability
  • Metered usage
  • Data tier isolation
50
Q

are self-contained units of logic that support interoperable machine-to-machine interaction over a network

A

Web based services

51
Q

Six REST design constraints

A

Client-server
stateless
cache
interface
layered system
code on demand

52
Q

First generation web service technologies

A

WSDL
XML
SOAP
UDDI

53
Q

…event-driven programs designed to intercept messages at runtime

A

Service agents

54
Q

Service middleware

A

designed to accommodate complex service compositions

55
Q

Types of Service middleware

A

ESB - service brokerage, routing and message queuing
Orchestration Platform - host and executre workflow logic

Cloud Computing (3 decks)

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