ISRO2008-10

Question

Which Project $802$ standard provides for a collision-free protocol?

• A. $802.2$
• B. $802.3$
• C. $802.5$
• D. $802.6$

Answer 1

802.5 Token Ring

In IEEE 802.5, the token passing scheme is used in place of Carrier Sense Multiple Access with Collision Detection (CSMA/CD) on a ring topology local area network (LAN).

The token ring network is designed in such a way that each node on the network is guaranteed access to the token at some point. This equalizes the data transfer on the network. This is different from an Ethernet network where each workstation has equal access to grab the available bandwidth, with the possible of a node using more bandwidth than other nodes.

Comments

It should be 802.3

see:

https://en.wikipedia.org/wiki/IEEE_802.3

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it does not provide collision free environment .

3 methods of controlled access is

reservation

polling and 

token passing

IEEE 802.5, the token passing scheme is used in place of Carrier Sense Multiple Access with Collision Detection.

if you are not understanding just type in google " 802.5 standard " you will get your answer.