Cloud Interview (Generic questions (Security aspect with cloud (a) …
Adavantage of cloud computing?
a) Data backup and storage of data
b) Powerful server capabilities
c) SaaS ( Software as a service)
d) Information technology sandboxing capabilities
e) Increase in productivity
f) Cost effective & Time saving
full form and usage of “EUCALYPTUS” in cloud computing
“EUCALYPTUS” full form stands for Elastic Utility Computing Architecture for Linking Your Programs to Useful Systems”.
“Eucalyptus” is an open source software infrastructure in cloud computing, which enables us to implement clusters in cloud computing platform. It is mainly used to build public, hybrid and private clouds. It has the capabilities to produce your own data center into a private cloud and provides to use its all functionality for various other organizations
open source cloud computing platform databases
In cloud architecture what are the different components that are required?
Cloud storage services
Cloud provided services
In cloud architecture what are the different phases involved?
List down the basic characteristics of cloud computing?
Elasticity and Scalability
Self-service provisioning and automatic de-provisioning
Billing self service based usage model
In cloud architecture what are the building blocks?
Deployment operation architecture
What are roles and why use them?
Web Role – A web role is basically used to deploy a website, using languages supported by the IIS platform like, PHP, .NET etc. It is configured and customized to run web applications.
- Web Role
- Worker Role
- VM Role
Worker Role – A worker role is more like an help to the Web role, it used to execute background processes unlike the Web Role which is used to deploy the website.
VM Role – The VM role is used by a user to schedule tasks and other windows services. This role can be used to customize the machines on which the web and worker role is running.
What Are The Options To Manage Session State In Windows Azure?
windows azure caching
What Is Cspack?
It is a command-line tool that generates a service package file (.cspkg) and prepares an application for deployment, either to Windows Azure or to the compute emulator.
How To Programmatically Scale Out Azure Worker Role Instances?
Using AutoScaling Application Block.
What Is Web Role In Windows Azure?
Web roles in Windows Azure are special purpose, and provide a dedicated Internet Information Services (IIS) web-server used for hosting front-end web applications. You can quickly and easily deploy web applications to Web Roles and then scale your Compute capabilities up or down to meet demand.
What Is Windows Azure Diagnostics?
Windows Azure Diagnostics enables you to collect diagnostic data from an application running in Windows Azure. You can use diagnostic data for debugging and troubleshooting, measuring performance, monitoring resource usage, traffic analysis and capacity planning, and auditing.
What Is Blob?
The Azure Blob Storage offers two types of blobs:
a. Page blobs are a collection of pages. A page is a range of data that is identified by its offset from the start of the blob. To create a page blob, you initialize the page blob by calling Put Blob and specifying its maximum size.
- Block Blob
- Page Blob
What Is The Difference Between Block Blob Vs Page Blob?
- Block blobs are comprised of blocks, each of which is identified by a block ID.
- You create or modify a block blob by uploading a set of blocks and committing them by their block IDs.
- If you are uploading a block blob that is no more than 64 MB in size, you can also upload it in its entirity with a single Put Blob operation.
4.Each block can be a maximum of 4 MB in size. The maximum size for a block blob in version 2009-09-19 is 200 GB, or up to 50,000 blocks.
b. The maximum size for a page blob is 1 TB. A page written to a page blob may be up to 1 TB in size.
Key elements in AWS
- Route53 is a highly scalable DNS web service.
- S3 is most widely used AWS storage web service
- SES is a hosted transactional email service and allows one to fluently send deliverable emails using a RESTFUL API call or through a regular SMTP.
- EC2 is an AWS ecosystem central piece. It is responsible for providing on-demand and flexible computing resources with a “pay as you go” pricing model.
- EBS offers continuous storage solution that can be seen in instances as a regular hard drive.
- CloudWatch allows the controller to outlook and gather key metrics and also set a series of alarms to be notified if there is any trouble.
What is AMI?
AMI stands for the term Amazon Machine Image.It’s an AWS template which provides the information (an application server, and operating system, and applications) required to perform the launch of an instance. This AMI is the copy of the AMI that is running in the cloud as a virtual server. You can launch instances from as many different AMIs as you need. AMI consists of the followings:
- A root volume template for an existing instance
What do you mean by classic link?
The Amazon virtual private cloud classic link will permit EC2 instances in the EC2 classic platform. This occurs so that it can communicate with the instances that are present in the virtual private cloud. The communication occurs with the help of private IP addresses. In order to use a classic link it is important that you enable it to for virtual private cloud in your account. Then you will need to associate a security group with an instance in the EC2 classic. This security group is from the VPC for which you enabled the classic link in your account. Each and every rule that is there for the VPC security group is applicable for the communications between the instances in EC2 classic and those instances in the VPC.