An example of a device that uses all the five layers is A router b. A PC c. A hub d. A switch An example of a device that uses only the lower three layers is: A router A PC A wireless access point b. c. d. A mail server According to the Internet Stack Model, the application layer produces a. Messages b. Segments c. Datagrams d. Frames e. Bits According to the Internet Stack Model, the transport layer produces a. Messages b. Segments c. Datagrams d. Frames e. Bits According to the Internet Stack Model, the network layer produces: a. Messages b. Segments c. Datagrams d. Frames e. Bits According to the Internet Stack Model, the link layer produces: a. Messages b. Segments c. Datagrams d. Frames e. Bits According to the Internet Stack Model, the physical layer produces a. Messages b. Segments c. Datagrams d. Frames e. Bits