Cloud Infrastructure

Question 1

Cloud instance

Answer 1

Refers to virtual server. High availability configuration refers to regional instance, provides data redundancy.
Within regional instance configuration is made up of primary instance and standby instance

Question 2

Standby instance

Answer 2

In case of instance or zone failure standby instance takes over duties. There is consistent synchronization to each zones/instance disks with standby instances

Question 3

Cloud availability zone

Answer 3

Zone is made up one or more data centers equipped with independent power, cooling and networking

Question 4

Abstracted layer

Answer 4

Also called virtual layer. One of two cloud infrastructure layers. Clouds utilizes some form of virtual networking to abstract the physical network and create a network resource pool. Typically the cloud user provisions desired networking resources from this pool, which can be configuration within the limits of the virtualization technique used.

Question 5

Rapid elasticity

Answer 5

4th cloud characteristic, adapt to changing workload demand by auto provisioning and deprovisioning pooled resources to match current demand

Question 6

Resource pooling

Answer 6

3rd cloud characteristics; providing computing; resources are pooled to serve multiple consumers using a multi tenant model with different physical and virtual resources. It is location independent, and there is location abstraction (country, state, data center)

Question 7

Cloud security groups

Answer 7

Form of logical network perimeters. Each resource is assigned to at least one logical cloud-based security group. Cloud based security group is designed with specific rules that govern the communication between the security groups. Rules are in TCP and IP layers ( ports and source/destination IP address)

Question 8

Measured services

Answer 8

5th cloud characteristic, this is metering capability for chargeback

Question 9

Cloud geography

Answer 9

Area in world contain minimum 1 region. Defines a discrete market that preserve data residency and compliance boundaries. Allows customers with data-residency and compliance needs keep data close. Geographic are fault-tolerant to withstand complete region failure through their connection to dedicated high-capacity networking infrastructures.

Question 10

Cloud region

Answer 10

Geographic concept- set of connected data centers deployed within a different perimeter

Question 11

High availability

Answer 11

Provides for redundancy and automatic failover capability

Question 12

Physical layer

Answer 12

One of cloud infrastructure layers, this is processors, memory, connectivity, storing. Is used to build clouds resource pools

Question 13

docker

Answer 13

Open-source platform to deploy and manage virtualized containers

Question 14

Containers

Answer 14

Offer a logical packaging mechanism in which applications can be abstracted from the environment in which they run. Virtualizes CPU memory, storage, network resources on OS level. Give developers ability to create predictable environments isolated from other apps. This mechanism virtualizes CPU, memory, storage

Question 15

Cloud characteristics

Answer 15

1. On-demand self-services (customer can provision computing capabilities as needed)
2. Broad network access ( heterogenous thin or tick client platforms)

Question 16

Container orchestration

Answer 16

Managing how containers are created and how they are connected