ALL ACRONYMS YOU NEED TO KNOW TO BE AN IT PROFESSIONAL

To be an IT Professional you need to know most of the abbreviations and Terms used to present some certain part or situations of Computers.Down here are the full forms used the most

A B C D E F G H I J K and L M N and O P and Q R S and T U,V and W X,Y and Z

WONDERS OF MICROSOFT HOLOLENS TECHNOLOGY!!

Microsoft has introduced a new technology of HoloLens that came with Windows 10 Operating System ,thus a Hololens is essentially a holographic computer built into a headset that lets you see, hear and interact with holograms within an environment such as a living room or an office space.

 The photo above shows how a HoloLens look like,Down here is what a Hololens can do!!

SPECIFICATIONS OF THE HOLOLENS.. 

The set-up consists of  the following:
 Holographic lenses and a depth camera, speakers above the ears and on-board processing via an Intel 32-bit architecture, an unspecified GPU and HPU (holographic processing unit). That's backed up by 2GB of RAM and 64GB of onboard storage. There's also a vent to keep the headset from overheating. On the connectivity front, It supports both Bluetooth and Wi-Fi,
There's a host of sensors built into the headset as well, which include an ambient light sensor and four environment sensing cameras that work in combination with a depth sensing camera to create the spaces that you'll be able to work within.
A camera of 2-megapixel HD  to take photos and record mixed reality video, with audio capture covered by an array of four microphones.
An AC adapter to power it up and a spare nose-arch. There's also a new Bluetooth Clicker accessory to use as an alternative means to navigate if you don't want to constantly use air tap gestures.
The battrey that lasts about 2-3 hours for active usage.Lightweight and adjustable to fit any adult head size.

SOME FEW THINGS YOU CAN DO WITH HOLOLENS...

• Blending virtual models, environments and 'holograms' with, well, reality, means that the lenses are transparent.
•  Capture video of your 'real' surroundings.
• Playing Video Games.

The Hololens cost is about $3000 That is about 3.4Tshs...

 

TOP 10 MOST USED DATABASE MANAGEMENT SYSTEMS(DBMS)

 

The following  are the most used Database Management System in around the Globe!!
         1 :    Oracle        -                        Relational DBMS          
         2:     MySQL      -                        Relational DBMS          
         3:     Microsoft SQL Server        Relational DBMS          
         4:     MongoDB       -                   Document store          
         5:     PostgreSQL      -                  Relational DBMS          
         6:     DB2                  -                  Relational DBMS          
         7:     Cassandra          -                Wide column store          
         8:     Microsoft Access     -          Relational DBMS          
         9:     SQLite         -                      Relational DBMS          
        10:    Redis             -                     Key-value store            
Followed by  
        11:   Elasticsearch   -             Search engine           
        12 : Teradata  -                      Relational DBMS           
        13:   SAP Adaptive Server  -  Relational DBMS           
        14:   Solr  -                        Search engine           
        15 :  HBase    -                 Wide column store           
        16 :  FileMaker    -            Relational DBMS           
        17 :  Hive  -                       Relational DBMS           
        18 :  Splunk   -                  Search engine           
        19 :  SAP HANA   -          Relational DBMS           
        20 :  MariaDB   -              Relational DBMS               

WHERE DOES COMPUTER DELETED FILES GO?

              Well!!For the first time when you delete a file from the computer,it is moved to the TRASH(Linux and IOS) or to the RECYCLE BIN(Windows) .What is happening here is this Because the Computer only understand binary(0's and 1's) so when you delete a file a computer writes over some of the binary with 0’s replacing the 1’s  But Lets ask ourself,What if we delete or we Empty the trash or Recycle bin,Where do they go?
              Actually!! When you Empty Trash or Recycle bin, a computer deletes a file and it remove the reference to the file on the Hard disk drive  Once the file header, or reference, is removed, the computer can no longer see the file. The space the file took up is no longer reserved for that file, and any new file can be stored in that location...The part of the disk previously occupied by the file is not modified or overwritten and still contains the file data, but that data is no longer linked to a file name.And this is Why you can Recover files from disks
              But in case if you want to delete the file and not to be able to recover,You have to use some special tools that can do a low level format..