broadband

as in the research university

i mean UTM,

i need to be more alert in gaining knowledge from the internet

but how can i easily access into it?

we are not stupid right?

of course we can connect through the internet 

by using connection devices.

example is like using broadband

actually, there are more things that we can talk about 

broadband. it is not only about DIGI, MAXIS, CELCOM.

i'm going to show some kind of informations

about this broadband topic..actually, i've

taken it from this page

please  have a look ok!

let me introducing what i've found

in the internet..

i've taken it from guide to speed up your slow internet connection

first of all check out your current broadband speed and note it down and then apply the following tweaks one by one :

1. Reducing your Web Cache Space : You need to reduce your web cache space to the minimum because this way your browser does not need to search much in the temporary files. For this you need to do the following :
   Click Start > Click on Control Panel > Double Click on Internet Options > Click on Setting option under the Browsing History[Delete temporary files, history, cookies, saved passwords & web information].
   
   Now reduce the cache size to the minimum recommended disk space which is normally 50Mb disk space. This way your internet connection speed will increase to some extent.
    
2.  Speed Up your Web Pages by blocking multimedia & Turning off Graphics: This is a very important tweak which can help you increase your broadband speed by many times. Here are the steps :
   Click on Start > Click on Control Panel > Double Click on Internet Options > Click on Settings under Advanced Menu > Deselect some of the options which you dont need generally while browsing example removing Show pictures if you normaly use internet connection for check out your emails etc.
   
   Generally you need to disable Images, sounds, animations etc in order to increase your internet speed because text wont take much time to load up in a slow connection.
3. Send Bulk emails using distribution lists : If you are looking to send a email to multiple reciptants then its time for you to signup for email distributions by creating mailing lists, this way you can get your work sorted even if you are on a very slow internet connection.
4. Use Fasterfox : A firefox Add-On which can increase your browser performance and network tweak to increase your browsing speed. The Add-on automaticaly loads up silently all the links open when there is idle bandwidth and help you to save up some loading time with a inbuilt pop-up blocker to block unwanted pop-up’s

Dont forget to read these tips for increasing your internet browsing speed by 4 times which is related to your browser settings.

Wireless lan (wlan)

Wireless lan (wlan)

A wireless local area network is typically referred to as a wireless Lan (WLAN). It uses radio frequency to connect computers and other devices. All communication pass through the network centrally located wireless access point.

 radio frequency

 radio frequency:

WLAN is also a flexible data communication system. WLAN technology is an alternative to theLAN that connects the building or campus. Options in WLAN technology are:
• Spread-spectrum technology (SST)
-Direct-sequence spread spectrum
-spectrum frequency hopping
• Narrow technology
-Send and receive user information in a specific radio frequency.
• Using infrared technology, the very high frequencies to carry data.

 
















WLAN Configuration • Independent wlan (peer to peer) -The most simple wlan-Using the wireless adapter -Does not require administration or pre-configuration • Infrastructure WLAN -Multiple-Access Point (MAP) link the WLAN to the wired network -Multiple users can share network resources -Greater coverage. 





WLAN applications can be used anywhere, such as:

• At the hospital, more productive
• Consulting / Account improve productivity
• University students - is easy to reach information
• Warehouse Worker - exchange of information in central database

Classification of  WLAN frequencies can be as follows:

•  WLAN Frequency - 10 MHz to 300MHz
•  Wide Coverage - 500 feet (indoors)

• 1000 Feet (Outside the building)

 
Network requirements:

•  Hardware
•  Access Point
•  Antennas and bridges
•  Wireless adapter  

Since WLAN has a very high level of flexibility, the access data through the network is very simple. 

ADVANTAGES WLAN

•   wiring for the LAN is no longer needed
•   workers will be more productive
• Cost savings
• settings  - diversity and topology enables application specific initialize  combination when needed.

  Disadvantages of WLAN

• Users outside the immediate area there is no coverage and broadcast Tues
• Security from hackers for both providers and users.
• wireless network is based on narrowband transport media. Wireless network operators need to optimize transportation solutions to customers to optimize service and the same bandwidth.
• 
  

Communication Channels

Communication Channels are a fundamental element of whole communication system. The data is carried from one computer to another by these channels which are divided into two categories. One is by providing a physical connection. The other category is wireless.

Physical connections: use a solid medium. Here are some kinds of  it. 
1. Twisted-pair cable: It consists of twisted-pair copper wire. It is used by standard telephone lines and Ethernet cables, commonly used in networks and to connect several components to the system unit. 

2. Coaxial cable: It replaces the multiple wires of twisted pair with a single solid-copper core. It has over 80 times the transmission capacity of twisted pair and it is used deliver TV signals to connect computers in a network , too. 

3. fiber-optic cable: It is used to transmit data as pulsations of light through teeny tube glasses. It has over 26,000 times the transmission capacity of twisted-pair cable. They transfer info. using rays of light at light speeds instead of electricity pulsations, making faster than copper cable. It is more reliable at transferring data than coaxial cable.

Wireless connections: use the air itself. Infrared, radio frequency, microwave and satellite are primary technologies used for wireless connections. 

1. Infrared: Infrared light waves are used to communicate over short distance. 

2. Radio frequency: Radio signals are used to communicate between wireless devices. Most business wireless networks are based on Wi-Fi ( wireless fidelity ). A short-range radio communication          ( Bluetooth ) transfers data up to about 33 feet. It is widely used for wireless headsets, printer connections and handheld devices.

3. Microwave: line-of-sight communication are provided by it because microwaves go in a straight line . the waves can be transmitted only over relatively short distance. however, it is good for sending data between buildings.

4. Satellite: satellites are used to orbit around 22,000 miles above the earth as microwave relay stations. They can relay microwave signals from one transmitter on the ground to another. they can be used to transfer large volumes of data. the main disadvantage of this communication is that bad weather can usually interrupt the flow of data. GPS ( Global positioning system ) is one of the most interesting applications of satellite communications. Its devices use location information, that sent to earth, to determine the geographical location of the device. this system is mounted into the dash with a monitor to display maps and speakers to provide spoken directions. GPS technology is used by many today`s cell phones for handheld navigation.