Question

a-Suppose that a Piconet bluetooth network contains seven devices. Is it possible to add three more devices to the same network? Justify your answer in your own words.

b-In an IPv4 packet, the value of HLEN is 6, and the value of the total length field is (0035)₁₆. How many bytes of data are being carried by this packet?

No handwriting or photo

Answer 1

1.   Bluetooth protocols assume that a small number of units will participate in communications at any given time. These small groups are called piconets which consist of one master unit and up to seven active slave units. The master is the unit that initiates transmissions, and the slaves are the responding units. As with piconets, where multiple Bluetooth devices are able to connect with each other in an ad-hoc manner is known as a Scatternet. A Scatternet is a type of ad-hoc computer network consisting of two or more piconets. A Scatternet is a number of interconnected piconets that supports communication between more than eight devices. The device participating in both piconets is known as slave-bridge which can relay data between members of both ad-hoc networks. Using this approach, it is possible to join together numerous piconets into a large Scatternet, and to expand the physical size of the network beyond Bluetooth’s limited range.

2. The HLEN value is 6 ,which means the total number of bytes in the header is 6*4 or 24 bytes .The total length is 53 bytes which means the packet is carrying 24 bytes of data (53-24)

                           (covert hexadecimal value to decimal)