Network topologies

The figure below shows how two computers communicate with each other. The interface between the two computers represents which of the following types of communication systems? Select all that apply. 

A.  Full duplex
B.  Half duplex
C.  Simplex
D.  Parallel
E.  Serial

The transport layer of the OSI framework provides a mechanism for the exchange of data between end systems. Examples of protocols that operate on the transport layer include: 

A.  IP and TCP
B.  IP and UDP
C.  TCP and UDP
D.  IP, TCP, and UDP