Cloud and the Datacenter Flashcards

Question

Platform as a Service (PaaS)

Answer 1

Provides a development platform for companies that are developing applications without the need for infrastructure ▪ Dion Training uses PaaS for our courses ▪ Examples: ▪ Pivotal ● OpenShift ● Apprenda

Answer 2

Provides a desktop environment that is accessible through the Internet in the form of a cloud desktop or virtual desktop environment ● Virtual Desktop Infrastructure (VDI)

Answer 3

Attempts to match the resources allocated with the actual amount of resources needed at any given point in time ▪ Elasticity is focused on meeting the sudden increases and decreases in the workload

Answer 4

Handles the growing workload required to maintain good performance and efficiency for a given software or application ● Elasticity o Short-term addition or subtraction of resources ● Scalability o Long-term planning and adoption

Answer 5

▪ Increasing the power of the existing resources in the working environment

Answer 6

▪ Adding additional resources to help handle the extra load being experienced ● Vertical- Scalability ● Horizontal- Elasticity ▪ Scaling out provides more redundancy and results in less downtime

Answer 7

Multitenancy ▪ Allowing customers to share computing resources in a public or private cloud ● Better storage/access ● Better use of resources ● Lower overall cost ▪ Multitenancy might cause your data to be hosted on the same physical server as another organization’s data ● When an organization crashes a physical server, all of the organizations hosted on that same server are affected ● An organization failing to secure its virtual environments hosted on a shared server poses a security risk for the other organizations hosting on that same server Set up virtual servers in the cloud with proper failover, redundancy, and elasticity ● Complex passwords ● Strong authentication ● Strong encryption ● Strong policies

Answer 8

Occurs when an attacker breaks out of one of the isolated VMs and begins to directly interact with the underlying hypervisor ▪ Host virtual servers on the same physical server as other VMs in the same network

Answer 9

Enables managing and provisioning of infrastructure through code instead of through manual processes ▪ Virtual machines ▪ Virtual devices ▪ Scripted automation and orchestration ● Orchestration o Process of arranging or coordinating the installation and configuration of multiple systems ▪ Lower costs ▪ Speed up deployments ▪ Increase security ● Snowflake Systems o Any system that is different from the standard configuration template used within your organization’s IaC architecture o Keeping things consistent and using carefully-developed and tested scripts

Answer 10

▪ Establishes a secure connection between on-premises network, remote offices, client devices, and provider’s global network ● Amazon Web Services- Direct Connect Gateway ● Microsoft Azure- Azure Private Link

Answer 11

▪ Extends preexisting, on-premise data center into the provider’s network to directly connect to your virtual private cloud network

Answer 12

Any facility that businesses and other organizations use to organize, process, store, and disseminate large amounts of data o Types ▪ Three-tiered hierarchy ▪ Software-defined networking ▪ Spine and leaf architecture ▪ Traffic flows ▪ On-premise versus hosted datacenters

Answer 13

Performance ▪ Management ▪ Scalability ▪ Redundancy

Answer 14

Enables the network to be intelligently and centrally controlled, or programmed, using software applications ▪ Application Layer ● Focuses on the communication resource requests or information about the network as a whole ▪ Control Layer ● Uses the information from the applications and decides how to route a data packet on the network ▪ Infrastructure Layer ● Contains the network devices that receive information about where to move the data and then performs those movements ● Provides a layer of abstraction between the devices and the control and data flow that happen on the network ▪ Management Plane ● Used to monitor traffic conditions and the status of the network

Answer 15

● An alternative type of network architecture that focuses on the communication within the datacenter itself Spine and leaf architecture can give faster speeds and lower latency ● This architecture can be used in combination with the standard three-tiered hierarchy ● North-South o Traffic that enters or leaves the data center from a system physically residing outside the datacenter o Northbound is data leaving the datacenter o Southbound is data entering the datacenter ● East-West o Refers to data flow within a datacenter ● On-premise o A traditional, private data infrastructure usually located in the same building as the main offices ● Co-located o A datacenter environment owned by another company ● Cloud-based o Migrating company data out of own server and datacenters and into a cloud service provider’s servers and datacenters