Category Archives: Networking
Using internet services provided by Internet Service Providers (ISP), we often come across to terms such as DSL and ADSL. You may already know that DSL is a subscriber connection mostly provided by the ISP. There are not major differences between DSL and ADSL; ADSL is just a type of DSL technology. To understand these terminologies and the technology better, I have compiled a Beginner's Guide to DSL and ADSL Technology below.
What is Bluetooth? According to Wikipedia: "Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Created by telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.
OSI Model stands for Open System Interconnection and it is a reference model for communications. Any protocol which we use these days such as TCP/IP, UDP or Netware have got a reference from OSI model. In other words OSI committee did not create any new protocol standards but instead referenced other protocols that were already defined such as TCP/IP or UDP etc. OSI model consist of 7 layers where each layer performs a specific task and provides services to the layer above it.