What is meant by internet key exchange ( ike)? a remote access client/server protocol that provides authentication and authorization capabilities to users who are accessing the network remotely. it is not a secure protocol. provides identification to communication partners via a secure connection. a protocol that allows computer systems to exchange key agreement over an insecure network. a protocol that secures ip communications by authenticating and encrypting each ip packet.

Through the process of sedimentation,sediment is turned back to rock to form sedimentation.the process of sedimentation is: > deposition-where fragments were deposited into the river or sea under gravity or travelling agent such as wind or water. > sedimentation-the fragments deposited in the river sedimented and accumulate> compaction-the layers of fragments deposited undergoes compaction due to the weight if the upper layers> cementation-chemical substance of the fragments such as cement dissolved into the water and cement the other fragments together to form sedimentary rock.thus,cementation and compaction are the process.on the other hand, transformation only occur when a rock under goes metamorphism(compaction or extreme heat).while recrystillization occurs when a rock is melted and cooled down,which also requires metamorphism to take place.hope it !