Examples Of Cloud Computing Close To Home.

You've heard about cloud computing and you also know that it is being used more and more in various configurations, however, you may not yet understand exactly what it is. The truth is that you are probably already using some form without even realizing it. Let's take a look at some examples of cloud computing and find out if any of them sound familiar.

If you have heard (or used) of Dropbox, you have used cloud computing. You can place a credit card application for Dropbox on the devices you want, and you can access the files stored in the application from those devices. Someone who concentrates on a document at home can place it in Dropbox and someone from the other side of the world with the same account can pick it up and do whatever they want when using it. Syncplicity is another similar service.

Social networks also use cloud computing. By entering data and photos on the easy-to-use site, you can share it with your friends around the world. Everything is stored within the cloud and is accessed simply by entering your bank account at any time. Of course, your information can also be shared with those who run the service, which may pose privacy and security issues, but many people seem willing to take risks to safeguard the convenience of the service.

There are several hosting services that offer you storage of documents, images, videos along with other information. YouTube, Picasa, and Flikr are also cloud computing services. Google Docs Zoho Office along with a number of others give you the ability to create documents that can be used in collaboration to edit and share.

Email is probably the most used application of cloud computing. When you use a web-based email service, you use that technology. It does not run and store the email program on your PC but allows cloud computers, or even the Internet, to do it for you. It gives you much more storage than you could store on your PC because there is a lot of storage in the back.

Offsite backup services are another example. You can store your data, photos and other data by yourself, but it is also important to have an online backup. Keep a duplicate of everything inside the cloud using services such as Carbonite, JungleDisk or Mozy. This often facilitates access to your data anywhere in the world and protects it against security problems if your computer or storage products are stolen or damaged.

Cloud computing plays a role in many facets of our lives. With an increasing number of uses, it is likely to be only popular in the coming years. Although you will encounter security problems when your data is stored off-site, there is also a long list of benefits that are presented, as clearly seen through these everyday examples of cloud computing.

What Cloud Computing Companies Are Offering?

Cloud computing is undoubtedly what's hot, but it's not just a trend. In the information age, we all need to store data and use a virtual space only makes sense.

Cloud computing gives you the opportunity to store data without having to own the hardware. It also gives you access to those files online, which means you can recover them anytime, anywhere. You can assign them, modify them and accumulate them without needing your hard disk.

That is because they are stored in another person. It is outsourcing storage and computer software and spending money on them as a service instead of a product. Cloud computing offers software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS), all through the cloud.

Cloud computing companies provide you with the service you will often get for free with a limited amount of space. For a larger capacity or small business, you can pay for the service per user, as a software application. Potentially, you can get the best quality service and storage at a low fraction of the cost of setting up on the site.

In recent years, cloud computing has really been removed, causing many new and smaller companies to appear offering cloud services. However, most users choose to use larger cloud computing providers that they may already be using for other services.

Let's take a look at some of the most popular cloud computing companies and what they have to offer.

Known as a true pioneer in cloud computing, Amazon has offered its customers cloud computing services since 2006. It began using technology for its own use and for its customers to take full advantage of their other services and products. Providing technology as customer service for personal use would be a logical next step.

Amazon's Elastic Compute Cloud (EC2) offers online computing capability, while the Simple Storage Service (S3) provides storage capacity when necessary to meet the growing and fluctuating needs of the user.

Amazon remains one of the most important names in cloud computing, although there have been questions about its reliability before. Amazon customers consider it convenient to add the service to the other services they will use from the company.

GoGrid makes a name for itself in cloud storage and computes the market by providing storage and virtual servers (Windows and Linux) that are quickly deployed in the cloud. GoGrid is one of Amazon's main competitors.

No one has to explain that Google includes the habit of being at the forefront of user satisfaction. If there is a way to make life easier for the client, he is eager to find it. And they have done it repeatedly. They have been offering several cloud computing services for a long time from Google Docs, and the ability to create documents, spreadsheets, and presentations and share them.

Google also has Google Apps, which is a set of online office tools, such as email, website creation, calendar, and word processing: all the basics for office productivity.

Google App Engine is really a PaaS that allows the user to create and host applications in Google's infrastructure. In fact, App Engine offers a viable alternative to PaaS using your company's services and is highly appreciated by developers.

AT&T; offers cloud computing as a natural addition to the Telcom services they previously provided. With all the infrastructure already in place, they can offer the Synaptic Hosting application hosting service with the use of virtual storage and servers, as well as network and security features.

So far we have touched on a number of the leading and well-known cloud computing companies, but there is also a range of newer companies that specialize in cloud computing. Some of them have advanced a lot in the field and have a very promising future.

Some new companies since the last year or two include people like Domo, and their goal is to help business executives get information when they want it and how they need it.

Social Dynamax allows companies and workers in contact centers to organize and respond to messages and other user communications. It opens a means to monitor and analyze the relative communications published on Facebook, Twitter, and other sites.

OneOps is a cloud provider that offers you a way to manage all your applications centrally, independently

GRID COMPUTING VS CLOUD COMPUTING

While Grid Computing and Cloud Computing have numerous features in common, they also have distinctions that could make one favorable within the other in some cases.

While they are not mutually exclusive and one can be used within the other, let's take a first look at what they have in common and then explore their differences.

In the user's perspective, both grid and cloud computing looks very similar.

This is because abstraction is one of the necessary options of both.

Although several complex computing processes take place, the user does not have to understand the details of the methods that are performed.

These processes are essentially masked (abstracted) through the simple interface with which it interacts.

Receive input and output in an easy to use way.

Both types are forms of distributed computing that use multiple servers and save computing with a kind of specialization.

In cloud computing, the user has access to a variety of services without the need to invest in the architecture to use it.

It offers many different services, from generic text processing to web hosting and custom software for any specific company, which can be used without the need for software and hardware that would be required without the cloud.

The services provided can be improved as a result of additional hardware and memory accessibility.

And you can store objects of almost any size, small or large.

In  Grid Computing, considerable work, controlled by a system, is divided into individual tasks that are performed separately in equivalent time.

However, although interdependent tasks can be carried out, it significantly slows the procedure.

This is the reason why grid computing is ideal for jobs that have been parallelized, or the code is divided into parallel tasks, rather than interdependent tasks.

Grid Computing jointly accesses a variety of servers, creating the use of their untapped process power.

On the other hand, it is not the most efficient for storing small amounts of data.

It is more suitable for calculating intensive operations.

While you will often find grid computing around the back end of a computational cloud or perhaps a cloud within a computational grid, each of these features has its own unique set of features that make it suitable for different jobs.

Cloud computing can combine a wide variety of services to present the consumer with an optimized result without problems.

Grid computing can handle very intense tasks using high processing power and do so in a short time due to parallel processing.

It is easy on the surface to confuse the two when you compare grid computing with cloud computing in more detail, you can see that, although they have many.

5 FREE CLOUD STORAGE FOR SMALL BUSINESSES

You all understand that the exploitation of the cloud will bring great blessings to all low businesses. regularly pay cash in hardware to store your files and applications, why not consider cloud exploitation? Instead of sending documents by email from one place to another, why not store them centrally in the cloud?
From comparatively corporations like Adrive, Box and Dropbox, to heavy Google and Microsoft, several of them use free cloud storage as the easiest way to tempt users in their clouds in the hopes that they pay a lot for Additional volumes and services. Next, there are five high free cloud services that you should understand.
1. GOOGLE DRIVE (FREE 15GB STORAGE)
Google Drive could be file storage and synchronization service created by Google. This service allows users to store files within the cloud, share files and edit documents, spreadsheets and screens with collaborators. Google Drive encompasses Google Docs, Sheets and Slides, a set of associated workplaces that allows cooperative written material for documents, spreadsheets, screens, drawings, forms and more.
2. MICROSOFT ONEDRIVE (FREE STORAGE 15GB)
OneDrive (formerly called SkyDrive, Windows Live SkyDrive and Windows Live Folders) could be cloud storage and file hosting service that allows users to adjust files and access them from an online browser or mobile device later. With this, users will share files publicly or with their contacts, publicly shared files do not need a Microsoft account to access. It is part of the set of online services known as Windows Live.
3. ADRIVE (FREE 50GB STORAGE WITH ADAPTED AD)
ADrive provides online cloud storage services for clients, United Nations agencies, individuals, businesses and business-level users. Its objective is to offer users a convenient and reliable service thanks to greater management of their knowledge from almost anywhere at any time. From the moment it was absolutely based in 2007 by veterans of the storage and network trade, ADrive was created to meet the stress of our data-intensive world. From the beginning, it is the web storage business giving the freest storage and backup on the web.
4. BOX (FREE STORAGE 10GB WITH TRANSFER SIZE OF 250 FILES)
Box (formerly Box.net) is an Internet file sharing and private cloud content management service for businesses. The company adopted a freemium business model and provides up to ten GB of free storage for private accounts.
5. DROPBOX (FREE STORAGE 2GB)
Dropbox could be a file hosting service operated by Dropbox, Inc. in the city of California, which offers cloud storage, file synchronization, personal cloud, and buyer package. Dropbox provides users to make a special folder on their computers, which Dropbox synchronizes to look like a similar folder (with similar content) despite what PC is used to look at it. Files placed during this folder are also accessible through the Dropbox website and mobile applications.

Interview Question PART 7

Q1) Is Gmail will be considered as SaaS or PaaS?
Ans-Gmail is SaaS which gives email service. If we are using Gmail as email services means we are not owning the email server. Google is hosting it. We are just accessing it using our browsers.

https://www.networkworld.com/article/2182527/virtualization-iaas-vs-paas-vs-saas.html

Q2) Is Microsoft Office 365  SAAS, PAAS, or IAAS?

Ans-Microsoft office 365 is SAAS as it provides software as a service in the form of Microsoft word, excel, etc.

https://www.comtech-networking.com/blog/item/568-is-microsoft-office-365-a-cloud-or-software-as-a-service/

Q3) Is Google Drive a cloud?

Ans-Google drive is cloud storage, Google SAAS's offering.

Q4)What is Dom0 in Xen?

Ans-While booting Dom0 is the initial domain started by Xen hypervisor. Dom0 is referred to as "Domain 0". It has drivers for hardware, and it provides Xen virtual disks and network access for guests each referred to as a domU.

Q5)What is the difference between Intranet and Cloud Computing?

Ans-Intranet means an internal network used for communication among the people using systems in an organization whereas Cloud Computing provides IT services int the form of IaaS, PaaS, SaaS to the cloud users by the cloud providers.

Q6) What is CPU virtualization?

Ans-CPU Virtualization is the virtualization of the hardware. Here, the hardware is controlled by guest OS over a virtual machine on a platform virtually.

Q7) What is memory virtualization?

Ans-Memory Virtualization means dividing the random access memory from the individual system in a data center and then collect or aggregate those into a virtual memory pool which can be used by the user according to his requirement.

VIRTUAL MACHINE MIGRATION

Virtual Machine migration means that first the Virtual Machine is temporarily stopped, a snapshot of it is taken, then this snapshot is moved to the other system and then resumed after that on that system. This process is called VM Migration.

A Snapshot is a state of the virtual machine at a particular point in time.

If a Virtual Machine is migrated, that means its memory, storage, and network connectivity are also transferred to the other host.

The need for Virtual Machine Migration 

1) Maintenance

2) Load Balancing

3) In Case of a Host failure, for Recovery purposes.

Types of Virtual Machine Migration

1) Live Migration: In this, RAM pages are getting copied and is marked "dirty", meanwhile the virtual machine is still running.

2) Warm Migration: Suspend the virtual machine for a few seconds, copy the RAM and CPU       Registers, then resume on host 2.

3) Cold Migration: Power off the virtual machine on host1, after migrated to host 2 restarts it.

Virtual Machine Memory Migration

1) Pre-copy Memory Migration: In pre-copy memory migration, the hypervisor copies the memory pages to the source system to the destination system. If some of the pages are changed, it is marked dirty and is recopied.

2) Post-copy Memory Migration: In post-copy memory migration, the first virtual machine is suspended, the CPU registers and non-pageable memory is transferred to the destination host.After transfer VM is resumed, even though most of the memory state is in source host.