Nswer Truth and False: Marks (10)
Collision avoidance uses a circulating token to control the access to the medium.
Count-to-infinity Problem occur in Open Shortest Path First Protocol.
127.0.0.1 address corresponding IPv6 loopback address.
In IPv4, the checksum covers only the header.
Bundle protocol is responsible for accepting messages from the application and
sending them as one or more bundles via store-carry-forward operations to the
destination DTN node.
DSR RREQ packet includes the following fields: the sender address, the target
address, a unique number and a routing table.
In IPv4 and IPv6, the Multicast protocol is Internet Group Management Protocol
(IGMP).
Ethernet address consisting of all is is treated as unicast address.
Delay bandwidth product represents the amount of data the sender can send before
it would be possible to receive a response.
Fragmentation occurs in a router when it receives a datagram that it wants to forward
ver a network which has MTU greater than datagram.

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a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.