What Is Virtualization?

Virtualization is a term used when a software application is used as a  hardware emulator

How Virtualization works:

When software is installed on the host device , the operating system of the host device which usually communicates with its real hardware is now communicating with with software emulator of the same hardware.

Though the performance of virtual system is not as good as the real one, it is used because most host devices do not require full participation of hardware

Initially coined for Server Virtualization the concept is used for desktop,data and network virtualization.

Benefits of  virtualization:

1) Run Apps Supported by Different OS:

Having a Windows OS and want to run application supported on Linux or vice-versa, download from CD in case of Windows and from online if the OS you need is Linux, now install the required OS on the Virtual Machine and then download required app  [What Is Virtual Box]

This is how it will appear


2.Access to Virus-Infected Data:

Having a file which your antivirus software has flagged but you have to access it anyway?With the help of virtualization you can access virus infected files .

VM comes with a snapshot functionality which saves the state of all your hardware and virtual OS like freezing time.

So while accessing your file if the virus causes havoc,just click the restore VMoption Viola! Clean virtual computer.

Using the same functionality you can test software upgrades & new configurations

TYPES OF VIRTUALIZATION:

1: Server Virtualization 

Most servers operate at less than their full  capacity resulting in waste of expensive hardware resources .  Server virtualization improves these inefficiencies by allowing multiple operating systems to run on a single physical server as virtual machines, multiplying the capacity of every single physical machine.

Software : VMware vSphere

2:Network Virtualization:

Network virtualization is the complete replica of physical network.It consists logical networking devices – i.e. logical ports,logical switches,firewalls,router and more.Virtual networks offer same features as the physical network but with hardware independence

Here you can see multiple x-86 processors replaced by single x-86 with multiple VM.

*Hypervisor is a virtual machine manager which creates and runs virtual machines.

Software: Apache:Openstack and VMware NSX

3: Desktop Virtualization

In today’s time-efficient world everyone wants to access their data from anywhere across the globe so that their work does not meet hurdles

This is where desktop virtualization comes into picture.With the use of Remote Desktop Services employee is given a virtualized computer with company’s data being saved on a central server.Thus employee is able to access it’s data by simply logging in the central server .

Even if the employees computer is damaged all the data can be recovered from company’s central server instead of repairing individual computer of employee.

The access of employee can be can be restricted by restricting the access of the virtualized computer to the central server.

Disadvantage is that if the security of server is breached all the data of the central server is at risk thus privacy of central server is of the utmost importance

Software: VMware Horizon

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[How To] Make Video Calls Using Whatsapp 

It’s Live. Video calling from Whatsapp is now possible.

Here is how you can make video calls from Whatsapp?

    1. First of all, You will need to upgrade your whatsapp from a relevant app store. Or you can visit https://www.whatsapp.com/download/ to download the latest version on your phone.
    2. Select a contact that you want to connect with over a video call.
    3. Make sure your Whatsapp Contact also has an updated version or else you may get an error as given below.
    4. Press the call button next to the contact name & a pop-up will open from there . it will give  you 2 options to select from as given below. Select the video call option & you will be connected over the video call.

 

Skype has dominated the video calling market for a long time. In fact for a lot of us Skype is a synonym to video calling. It will be interesting to see how video whatsapp calling feature is being used.

One thing is for sure, if this feature works out well, it will definitely eliminate the need of using multiple apps for mobile communications.

Here are a few quick questions that might help you to make sure a great video call experience.

Q. Can you make a Whatsapp video call on a 2G network?
A. Technically yes, but considering the speed limitations – don’t expect the call experience as impressive.

2. What type of Internet is recommended for Video Calls?
A. If you are using WiFi – about 100 KBPS of download & upload speed should be good enough for a video call.

B. If you are on a 3g network or a 4g network (Jio 4g, Vodafone 4g, Airtel 4g or Idea 4g) – you can expect to have a great video calling experience.

3. Is the call realtime? How fast is the call?
Video calls on whatsapp appear a lot more faster than Duo & Skype.

A. We tried making a video call on a relatively slower WiFi network (100 KBPS upload/download speed) – there was a delay of about 2 seconds in the call.

B. On a 4g network the delay was only of about 1 second.

Go give it a try & do share your first whatsapp video call experience.

[Free Software &  APP] Download Wunderlist Todo List Manager from Microsoft

Are you one of those people who leave from home to get some milk & return back with chocolates?

Do you find it difficult to keep track of all your daily chores, meetings & all the items you have been lending to your neighborhood?

Well, there is a solution available for this problem. You must try Wunderlist – it’s an app from Microsoft.

A Quick Review :

Wunderlist is a cross device Todo manager that works with web browsers, Android phones, tablets, Apple devices & Windows PCs.

This nifty little tool is extremely powerful & supports collaboration, which means you can collaborate with your friends, family & colleagues .This also includes a possibility of delegating your work to others 😉

You can also start discussion thread along with your ToDos. These discussions and comments can include Photos, PDFs, Presentations and more.

The beauty is in the reminders, you can set as many reminders as you want and never have to worry about anniversary gift for your wife.

The simple and easy to use folder system allows you to organize projects for home, work and everywhere else.

Here is how the app looks :

You can download the software and app for various devices here :

https://www.wunderlist.com/download/