week_3

what is content delivery network (cdn)?

a distributed server network

hypervisor

a piece of software that runs above the physical server, or host

bare metal server

a single-tenant, dedicated physical server

subnets

allow users to deploy enterprise application using the same multi-tier concepts used in on-premises environments

which of the following are examples of single-tenant compute environments in the cloud?

bare metal servers dedicated host

cloud storage options

block storage file storage object storage

characteristics of bare metal servers

can take longer to provision minutes to hours more expensive than vms only offered by some cloud providers

another networking capability provided by the cloud providers is:

cdns

computing resources

cloud providers offer several computers options- virtual servers (software based), bare metal servers (physical servers), and "server less" (abstraction) computing resources

public interfaces

connect the servers to the public internet

what are some key differences between containers and virtual machines?

containers can use the same os as the host, while a virtual machine needs its own copy of the os, which can also be different from the host os containers are more lightweight as compared to virtual machines

bare metal servers work best for:

cpu and i/o intensive workloads excel with highest performance and security satisfy strict compliance requirements offer complete flexibility, control and transparency come with added management and operational overhead

which of these scenarios is ideal for the use job bare metal servers, as opposed to virtual servers?

cpu and i/o intensive workloads huge performance and strict security and compliance requirements

there are four main types of cloud storage available. which storage type is sometimes called "local storage"?

direct attached

cloud storage is available in four main types

direct attached file storage block storage object storage

there are four types of cloud storage available. which storage type is ephemeral or non-persistent?

direct attached storage

load balancers

distribute the traffic and allow applications to be responsive

building a cloud network

entails creating a set of logical constructs that deliver networking functionality akin to data center networks for securing environments and ensuring high performing business applications

what makes file storage an ideal solution for scenarios where shared storage is needed?

file storage can be mounted on multiple compute nodes at the same time

some of the traditional hardware appliances:

firewalls load balancers gateways traffic analyzers

bare metal server workloads

fully customizable/ demanding environments dedicated or long-term usage high performance computing highly secure/isolated environments

bare metal server example workloads

hpc (high-performance computing) big data analytics gpu-intensive solutions erp crm ai deep learning virtualization

containers do not need to

include a guest os in every instance because they leverage host os

web-facing vsis need

internet access

network interfaces in the cloud need:

ip addresses subnets

region

is a geographic area or location where a cloud provider's infrastructure is clustered

application responsiveness ensured using

load balancers

cloud network

logical instances networking functions as a service vnics

what is file storage sometimes called?

nfs (network file storage)

which of these statements is true of file storage but not object storage?

not highly resilient and available not include data encryption at rest and in transit storage is attached to computer nodes using an ethernet network

the most common mode of storage

object storage it's both highly distributed and resilient

which of these are features of object storage?

object storage is effectively infinite you can directly use object storage without attaching it to a compute node

traditional data centers

often struggle with scale, performance and distributed characteristics of cloud

which of the following is not a good fit for object storage

operation systems or applications like databases

on premise

physical devices networking equipment in physical racks nics

private interfaces

provide connectivity to your other cloud resources and help keep them secure

virtual servers

rapidly provisioned provide an elastic & scalable environment low cost to use

the infrastructure layer is foundation of the cloud and consists of physical resources. where do these physical resources reside?

regions, zones, and data centers

networking infrastructure in a cloud datacenter includes traditional networking hardware like:

routers switches

it is even more important to configure which network traffic and users can access your resources:

security groups acls vlans vpcs vpns

access control lists (acls)

serve as subnet-level firewall

virtualization is the process of creating a software-based or virtual version of something. what is typically created with virtualization in the cloud

servers, storage devices, networking resources, and applications

what benefits do runtime engines provide to containers?

share the operating system (os) with other containers

what is the main benefit of a content delivery network (cdn)?

speed, it makes your website faster by serving files from a location closer to the user

what is a standard tier bucket in object storage typically used for?

storing objects that are frequently accessed

which part of a logically segment cloud network is the main area where security is implemented?

subnets

the faster the read/write speed

the higher the per gigabyte cost

why do bare metal servers take longer to provision than virtual server?

they are physical servers that can be customized to specified capacity

which type of virtual machine (vm) takes advantage of unused capacity in data centers at a much lower cost than regular vms of similar sizes?

transient or spot vms

each cloud region can have multiple zones (also known as availability zones.) what are zones?

unique physical locations with one or more data centers

public gateways enable

user access from the internet

security groups provide security for

virtual instances

enterprises securely connect to cloud using

virtual private networks (vpns)

cloud storage

where you save data and files in the cloud

direct attached (local storage)

within same server or rack fast use for os ephemeral (temporary) not shared non- resilient

which of these scenarios are best suited for block storage?

workloads that need low-latency storage applications that need consistent fast access to disk, such as databases

is it possible to run completely different operating systems on virtual machines (vms) that are on a single host? if yes, what makes this possible?

yes, virtualization makes it possible- to have vms, running different operating systems, on a single host