Thursday, February 20, 2014

Understanding Cloud Computing: "Explain to me like I'm five"

cloudride Understanding Cloud Computing: Explain to me like Im five

Understanding Cloud Computing with cheeseburgers

The term “Cloud Computing” is not new but still many people in this world are afraid or avoid the use of it. There is a misunderstanding or misconceptions in people’s mind about it. Cloud Computing don’t have a specific definition but it’s many mind many definitions, concept and understanding of cloud computing is different from person to person.

While checking reddit, I found a wonderful explanation for cloud computing which will definitely help everyone to understand cloud computing and also clear many doubts.

You don’t like making your own cheeseburgers, so you hire a chef to make a cheeseburger for you. It’s a tasty cheeseburger, so you invite all your friends round the next day for a cheeseburger party. But the chef can’t make 100 cheeseburgers for your 100 friends, he’s too busy! Lots of your friends go hungry!

So, the next day you hire another 99 chefs, to make sure everyone can get a cheeseburger. However, that day, half your friends can’t come round, so 50 of the chefs make 50 cheeseburgers for the friends who did come round, and the other 50 chefs stand around doing nothing. But, you still have to pay them! So you’re wasting money.

Now, imagine the four other people living on your street are also having cheeseburger parties, and they are all having the same problem. Sometimes they have more chefs than guests, wasting money, and sometimes they have more guests than chefs, so people are going hungry. Nobody can hire the exact number of chefs because nobody knows exactly how many friends they are going to have round that day. Also, everybody has to build huge cheeseburger kitchens, taking up room in their house they could use for other things. And to be honest, it’s a hassle having all the chefs in your house. They’re grumpy and annoying. You don’t really care about keeping chefs happy, you just want to eat cheeseburgers.

So, someone comes along and builds a massive kitchen with 200 chefs, and all the people on your street get rid of their own chefs and kitchen, and instead pay that person to do cheeseburger deliveries for them. Some days you have 100 guests, so you use 100 of these chefs, while other people have only 25 guests and chefs each. Another day you might have only 10 guests and chefs, and your next door neighbour has 150 guests and 150 chefs. You each only pay for the number of chefs you use each night, even though that changes unpredictably. And you don’t have to use half your house for cheeseburger kitchens. You don’t even need to know or care how many chefs are employed by the kitchen. Because the cheeseburger kitchen has lots of customers effectively pooling their money together, you can each be pretty confident there will be enough chefs to go around, plus, you have one totally amazing kitchen instead of five kinda ok kitchens.

All credit goes to the Writer here, I have just copied and pasted.

Understanding Cloud Computing: "Explain to me like I'm five"


Thursday, October 10, 2013

uCertify: a New way of online learning

In IT world, upgrading knowledge is always important part of the cycle. IT guys subscribe to various courses to improve their knowledge and skills. As an System Administrator I have a list of courses which I want to do or complete but due to lack of time I am unable to enrol for courses on regular interval and I don't want to go for online courses as I don't have that much faith on it.

Recently, uCertify - a site which provides quality test prep kits for global IT certifications have contacted me and asked if I can test their kits and write a review. I have selected the course "CompTIA - Cloud Essentials(CLO-001)" for review as this course was in my list.
I was quite impressed with the uCertify home page as it provides all required information about the courses which are available. It covers all the necessary information which is required for any student/candidate to know before enrolling to the site. Login into the system was easy but after login at beginning I was a bit confuse about from where to start but soon it was a bit easy to know.

According to me, following are some Positive and negative points of the uCertify online portal:

1.   Multi-device: Days of sitting on one system and doing works are gone. Everyone today is online and working from their mobiles, tablets etc. and uCertify prep kit is compatible to work desktop systems as well as on Mobile devices.
2.    Pre-assessment Exam: This is one of the features I really liked. Before starting the course you can take a pre-assessment exam which contains some basis questions related to the course. This helps candidate to evaluate themselves.
3.    Notes and In Chapter exam: Course contents are divided in Chapters and there are notes at the end of the chapter which explains the terms which are used in the chapter. Also there are exam (set of 2 to 5 question) just to revise what you have studied.
4.    Quiz and Exercise: At the end of the chapter you have to give a quiz and complete exercise to complete the chapter which is a nice way to revise all what you have read and understood.
5.     Test, Learn and Review modes: You can give the exam in test mode where you will have to select answer and result will be declared at the end of the test where as if you go to learn mode, you get the answer immediately as soon as you select your answer. Learn mode not only tells you, if the options you have selected are correct or incorrect but it gives an explanation for the correct options.

  1. Online only: All the courses/prep kit which is available with uCertify are online only and there are no option for offline reading. I really wanted it to be offline so I can read it via my mobile (which don’t have internet connection) while travelling.
  2. Only Prep Kit: uCertify provide Preparation kit only and don’t conduct exam, candidate have to search the test centres and give exams there. If uCertify can take exams or tie up with exam centres it will be easier for the students as they will have a single contact point.

At the end, I would say uCertify have took learning to a new level by providing prep kits for 200 to 300 courses which will help IT professionals to learn the course they want to learn whenever they have time.


Friday, December 23, 2011

With the introduction of SmartPhones and the ability to access the web using them has gained much popularity. With this revolution brought the need to optimize a website in-a-way that it can be accessed easily over mobile devices as well.

Read more here:


Thursday, December 15, 2011

Telenav announces free turn-by-turn navigation in any HTML5-capable browser

While the vast array of GPS devices currently available offer several options for directions while on the go, Telenav is launching a free way to get to a nearby location by using a HTML5-enabled browser.


Sitemarks Weekly Wrap-up: December 12th 2011

Welcome back to Weekly Wrap up. Following are the selected News for the week


Wednesday, December 07, 2011

VirtualBox PXE BOOT: “FATAL: Could not read from the boot medium! System halted.”

While trying booting Virtual machine on network (PXE Boot) in Oracle VirtualBox its shows Fatal Error: Could not read from the boot medium! System halted.

Amplify’d from

I have been configuring PXE Server to boot the servers and install operating system on internet. To test the configured server I have used Oracle Virtual Box (with network bridge with local system).

PXE boot and Virtual box was setup properly but when I tried to boot the Virtual Machine on Network it gave error “FATAL: Could not read from the boot medium! System halted.” on the console.

fatal error 300x194 VirtualBox PXE BOOT: FATAL: Could not read from the boot medium! System halted.

The VM was not even able to connect the DHCP server configured on PXE server as in such configuration Guest System try to fetch IP from DHCP servers. After doing lot of research I found a bug report (id: 6330) on virtual box site. So I changed the Network >> Adapter Type from “Intel PRO/1000 MT Desktop” to “PCnet-FAST III” from VM Settings.



Tuesday, November 22, 2011

Up To 30 Gbps: New Chip Enables Record-Breaking Wireless Data Transmission Speed

It looks like we can expect faster wireless connections in the near future: Japanese electronic parts maker Rohm yesterday announced [JP] it has developed a chip that reached a wireless data transmission speed of 1.5 gigabits per second in experiments, the highest level ever. And according to the company, even 30Gbps will be possible in the future.


Wednesday, November 16, 2011

openSUSE 12.1 debuts cloud, virtualization, Google Go support

openSUSE 12.1 offers a myriad of new features and enhancements designed to optimize the Linux distribution’s cloud, virtualization and management capabilities, and is reportedly the first to support Google’s Go Programming language.


About This Blog

The Windows Registry is a database which stores settings and options for Microsoft Windows operating systems. It contains normally information and settings for hardware, operating system software, most non-operating system software, and per-user settings. Registry is used to optimize the security, enhance the functionality, modify the functioning of any software OR settings and many more.

In this blog I have tried to collect all the tweaks and hacks available on various website. I have tested many of these hacks before posting but still I would suggest you to take backup of your registry before trying any of these tweaks and if anything goes wrong while trying these hacks I or this blog will not be held responsible.

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