Secure wireless network

• Make your Wireless network invisible
• Rename your wireless Network.
• Encrypt Your Network Traffic.
• Change your Administrator Password.(no birth date,car/bike number,mobile number, use character number and special character )
• Use file Sharing with Caution.
• Keep your Access point software Patched and Up to date
• Check your internet Provider’s wireless Security options.

How to install Telnet in windows 7?

How to Install Telnet in Windows 7
By default, Telnet is not installed with windows , you can install with following steps

• Go to Control Panel and Then Click Programs.
• Under Programs and Features, Click Turn Windows Features On or Off, If you are prompted for an administrator password or confirmation, type the password or proved confirmation.
• In the Windows Features Dialog Box , Select The Telnet Client Check Box.
• Click OK, the installation might take several Minutes.

if you are using windows server 2008 R2 , you should use server manager to install telnet.

What is Cloud(Computing) ?

What is Difference Between Bluetooth And NFC

• NFC and Bluetooth and NFC are both short range communication technologies
• NFC operate at slower speed than Bluetooth but consumes far less power and doesn’t  require pairing.
• NFC sets up faster than standard Bluetooth.But is not faster than Bluetooth low energy.
• With NFC Two devices connect automatically.Less than a ten’s of second.
• Data Transfer rate (424 Kbit/s) slower than Bluetooth V2.1(2.1 Mbit/s) with maximum data transfer of less than 20 cm.
• NFC has short range (sometime its user becomes difficult in crowded areas)

What is NFC ?
lalalaaa ETC
Difference Between NFC and Bluetooth

LiveJournal Tags: NFC and Bluetooth,What is NFC,which one is better NFC or Bluetooth.

Technorati Tags: NFC and Bluetooth.

Topologies

With these devices, local area networks (or LANs) can be created. In a LAN, computers can
share resources, such as hard drives, printers and Internet connections, and an administrator
can control how these resources are shared. When a LAN is being designed, it is possible to
choose any of the following physical topologies:

 In a bus topology, all the computers are connected to a single means of transmission, and
each computer can communicate directly with any of the others.
 In the ring configuration,each computer is connected to the following one, and the last one to the first, and each computer can only communicate directly with the two adjacent computers.
 In the star topology, none of the computers are directly connected with others. Instead they are
connected through a central point and the device at that central point is responsible for
relaying information from computer to computer. If several central points are connected to each other, an extended star topology is obtained.
In a star or extended star topology, all the central points are peers, that is, each exchanges information on an equal basis. However, if you connect two star or extended star networks together using a central point which controls or limits the exchange of information between the two networks, then you have created a
single, hierarchical network topology.