Knowledge Based Questions:. Go for Answer. Comprehension Based Questions:. Creative Questions:. Mohan, a member of Sabuj Bangla Club, transferred some pictures of the environmental disaster captured on the camera of his mobile phone to his laptop through a special protocol of IEEE Rahim bought a toy for his six-year-old son.
He showed the flight of the aircraft using the remote. Her eldest son, on the other hand, uses the internet via cable with a laptop.
Rahim uses wireless internet with the help of router on his smartphone. Rahim and his eldest son in internet usage. Multiple Choice Questions:. Written by,. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. At the end of this lesson- 1. Go for Bangla Version Wireless Communication System: Wireless Communication System where transmitting information from one point to other, without using any any physical medium.
Advantages of a Wireless Communication System: Mobility is the main advantage of wireless communication system. It offers the freedom to move around while still connected to network. Users are also able to share files and other resources with other devices that are connected to the network without having to be cabled to a port. Wireless networks can sometimes handle a larger amount of users because they are not limited by a specific number of connection ports.
The cost of installing wires, cables and other infrastructure is eliminated in wireless communication and hence lowering the overall cost of the system compared to wired communication system. Disadvantages of a Wireless Communication System: Wireless Communication systems use open space as the medium for transmitting signals. As a result, there is a huge chance that radio signals from one wireless communication system or network might interfere with other signals.
One of the main concerns of wireless communication is Security of the data. Since the signals are transmitted in open space, it is possible that an intruder can intercept the signals and copy sensitive information. Continuous exposure to any type of radiation can be hazardous. Even though the levels of RF energy that can cause the damage are not accurately established, it is advised to avoid RF radiation to the maximum.
Spread the love. Second Chapter Lesson Mobile Communication. As cables are not required, it would be less cumbersome carrying a personal bluetooth device and space would be less cluttered. As bluetooth devices automatically communicate with each other, it requires very little from the user.
For more technical resources and information relating to Bluetooth see the official Bluetooth site. WiFi or Wireless Fidelity, has a range of about m and allows for faster data transfer rate between 10 - 54Mbps. There are three different wireless standards under WiFi, The most widely used standard is These two standards are relatively inexpensive and can be found providing wireless connectivity in airports, railway stations, cafes, bars, restaurants and other public areas.
The main difference between the two is the speed. Networking between cities can beachieved without the need for expensive cabling.
It is also able to provide high speed wireless broadband access to users. As it can operate in two frequency bands WiMAX can work by line-of-sight and non-line-of-sight. Short frequency transmissions are not easily disrupted by physical obstructions. Higher frequency transmissions are used for non-line-of-sight service.
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