What is spam mails

           Spam" (the term junk mail is also used) refers to the sending of unsolicited bulk e-mails.

            The word "spam" comes from the name of the lunch meat sold by the company Hormel Foods. The association of this word with abusive e-mails comes from a Monthy Python sketch (Monty Python's famous spam-loving vikings) that takes place in a viking restaurant whose speciality is Spam. In this sketch, whenever a customer orders a different dish, the other customers start to sing "spam spam spam spam spam..." in chorus so loud that the poor customer can't be heard! 

so why sending spam ?

                   one word "advertisement"

Many spam emails contain URLs to a website or websites.The most popular spam topic is "pharmacy ads" which make up 81% of email spam messages.It's beleive that the advance fee fraud spam such as the Nigerian "419" scam may be sent by a single guy/gal from somewhere.

There are big spam companies too .

                     The computers in Ralsky's basement control 190 e-mail servers -- 110 located in Southfield, 50 in Dallas and 30 more in Canada, China, Russia and India. Each computer, he said, is capable of sending out 650,000 messages every hour -- more than a billion a day -- routed through overseas Internet companies Ralsky said are eager to sell him bandwidth.

How to stop spam ?

                   The best technology that is currently available to stop spam is spam filtering software.
More advanced filters, known as heuristic filters and Bayesian filters, try to take this simple approach quite a bit further to statistically identify spam based on word patterns or word frequency.

No GUI Boot Screen Splash

What The No Gui Boot Tweak Does :

This tweak disables the display of the bitmap animation on startup.

 

                                  When the Windows 7 operating system is booting up, it displays to the user an animated graphical Windows logo.  Loading and displaying this logo adds a few seconds to the Windows 7 startup time, so disabling it will shave off these seconds.  The downside?  The screen is black while Windows loads, and if users are uncomfortable with that, then it is not a good idea to disable it.

                                   The logo really has no added value or benefit to display other than letting the user know Windows is loading.  If you have tweaked your system to a comfortable level, and you are comfortable not seeing this image anymore, then it is safe to disable.  Personally, it was tougher for me on Windows 7 than their other operating system, mostly because the Windows load GUI was more fun to look at than it’s predecessors.

Disable The Logo GUI Boot On Windows 7 Startup:

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1. Select the Windows ‘Start’ button.
2. In the search box, type ‘msconfig’.
3. Scroll up and right click on the program.
4. Select ‘Run As Administrator’.
5. When the system configuration utility is loaded, select the ‘Boot’ tab.
6. Check the box titled ‘No GUI Boot’ at the bottom center of the form.
7. Click ‘Apply’.
8. Select ‘Ok’.
9. Restart your computer.

 

Hyper-V

Installing the Hyper-V Role

Now, log in using an account with local administrative privileges, and then open the Server manager. In case you aren’t familiar with the Server Manager, it’s the new tool that acts as a centralized management utility for Windows Server 2008. You can access it by entering the ServerManager.msc command at the server’s Run prompt.

When Server Manager opens, right click on the Roles container, and then choose the Add Roles command from the resulting shortcut menu. Windows will now launch the Add Roles Wizard.

You must choose the Hyper-V Role.

At this point, you will see the screen that’s shown in Figure B. Basically, this screen just tells you that you may end up needing to enable virtualization at the BIOS level prior to installing the Hyper-V roll. Some servers require this, and others don’t. The screen also tells you that after installation is complete, you can use the Hyper-V Manager to create and configure your virtual machines. The serene also contains a few links that you can use to access more information about the Hyper-V role.

This screen allows you to access more information about the role that you are installing.

Click Next, and you will be taken to a screen similar to the one that’s shown in Figure C. As you can see in the figure, your virtual machines require virtual networks in order for them to be able to communicate with other network hosts. Essentially, this screen allows you to choose the physical network adapter that you want to bind the virtual network adapter to.

You must bind the virtual network adapter to at least one physical network adapter.

You have the option of choosing multiple network adapters for load balancing, but you also have the option of using a single physical network adapter for all of your virtual machines. When you have made your selection, click Next.

You should now see a screen confirming that you are about to install the Hyper-V role, and warning you that the server may require a reboot after installing the role. Now, just click the Install button to install the role. The actual amount of time that it takes to install the role varies depending on your server’s performance, but the entire process took about 20 seconds on my server.

When the installation process completes, click the Close button, and then click Yes when you are prompted to reboot the server.  When the server reboots, log back into the server and the Server Manager should automatically load and resume the installation process. After about a minute, you should see a message telling you that Hyper-V has installed successfully. Click Close to complete the wizard.

Terminal services

Terminal services manager and Windows 7

I just found out that Terminal services manager does not exist in Windows 7. But fear not, the Remote Desktop Services Manager will do the trick. It is included in the Remote Server Administration Tools for Windows 7, which can be downloaded from here.

After some serious googling, I was also able to figure out how to actually enable the feature, in "Programs and Features", "Turn Windows Features on or off":

Go to "Remote Server Administation Tools", "Role Administration Tools", and enable "Remote Desktop Services Tools".

 There! Now you'll find the Remote Desktop Services Manager in your start menu — and can start kicking out stale remote desktop connections from your servers. :) 

RAID

RAID 

                          Redundant Array of Independent Disks is a redundant system uses multiple Hard Drive to store your data,so if one drive is fail your data is safe and accessible.

Mirroring – Multiple disk containing identical data

Striping - sequential blocks of data are split among multiple disk

Fault-tolerant – This is where parity data is stored allowing data to be recovered if a problem is detected

RAID 0

                      This configuration is the fastest of all the RAID levels, it uses a technique called data striping (see below) and requires at least 2 hard disks.

RAID 1

           This level uses a pair of hard disks at a time to provide fault tolerance (there is no performance benefit) and requires at least 2 hard disks.

Using a technique called disk mirroring (see below) the same data is written to both disks at a time, so if one hard disk crashes then the same data is available from the remaining hard disk. 

RAID 5

                 Data is striped across the drives in bytes, the parity data for one particular drive is stored on another drive allowing the data to be rebuilt using the parity technique.In the event of a disk failure, the data from the failed disk is reconstructed from parity striped across the remaining disks.

Minimum number of drives required: 3

Usable capacity will be generally be the physical capacity less one drive.

So if u have 4 1TB drives there only 3 TB of usable capacity

 

RAID 6 (double parity)

                RAID 6 is similar to RAID 5 in terms of striping and parity, with the major difference being that RAID 6 can tolerate two disk drives failing.

Minimum number of drives required: 4

Usable capacity will be generally be the physical capacity less two drive.

So if u have 4 1TB drives there only 2 TB of usable capacity

RAID 10

               Initially a pair of drives is mirrored as in RAID 1 and further striped as in RAID 0. Raid 10 is also known as RAID 1+0 .

Minimum number of drives required: 4

Usable capacity will be generally be the physical capacity less two drive.

So if u have 4 1TB drives there only 2 TB of usable capacity

The Growth of Android 

Nokia Lumia

Nokia Lumia 520

Main Features: 

4-inch IPS LCD Display |

Windows 8 OS |

1GHz Dual-Core processor,

512MB RAM |

5MP Rear Camera |

8GB Internal memory,

expandable up to 64GB |

3G, GPS, GLONASS, WiFi, WiFi Hotspot, Bluetooth, USB

1430 mAh battery

 

Design

It comes with flashy colours such as yellow, blue, red along with the usual black and white. You can changethe rear casing as per your choice.

 

Display

Lumia came with  4-inch IPS LCD with an 480x800 pixel resolution.The screen is so sensitive that you can operate with your finger nails.

 

Processor & RAM

It served with 1GHz Dual-Core Snapdragon S4 processor with adreno 305 GPU.it seems that 512 MB of RAM is not enough,however it quiet did the job,Asphalt 5 played very well with a noticeably warm.

 Camera

It comes with a 5 MP camera and 720p video record,without flash camera clicks are too sharp.but the video quality is good for this range

 Memory

It comes with 8 GB internal and a whopping 64 GB expandable via microSD card.And i learned from other blog is that nokia is offering 7 GB free cloud space. WOW!



verdict

Nokia Lumia 520 is a decent smartphone,packs with lots of free windows stuffs,like free office plus Nokia Music for free music and Nokia's Here location apps.With all these features and if you a are NOKIA enthusiast this smartphone is so far the best budget phone.