1-34. 1-35. 1-36. 1-37. Using  the  token  passing access method, what, if anything,  happens  when  the transmitting   station receives the same token? 1. 2. 3. 4. 1. 2. 3. 4. The  message  is  being sent The message has been passed around the network The message has been appended  by  another station Nothing How many layers are there in the OSI reference model? Five Six Seven Eight The physical layer is which layer number of-the OSI reference  model? 1. One 2. Two 3. Three 4. Four Which  layer  provides error-free  transmission  of information  over  the physical  medium? 1. Data  link 2. Network 3. Physical 4. Transport 1-38. 1-39. 1-40. 1-41. 1-42. The network layer is which layer number of the OSI reference model? 1. One 2. Two 3. Three 4. Four The  transport  layer  is  which layer number of the OSI reference  model? 1. Five 2. Two 3. Three 4. Four Which  layer  ensures  data units  are  delivered error-free, in sequence, with    no    losses    or duplications? 1. Network 2. Presentation 3. Session 4. Transport Which layer performs the functions  that  enable  two applications  to  communicate across the network? 1. Network 2. Presentation 3. Session 4. Transport Which layer formats data to be presented to the application  layer? 1. Network 2. Presentation 3. Session 4. Transport 5