Answer each of the following: 1. () What is a network? (b) What are the elements and their functions of a typical network? Explain each one. (c) What devices are used in layers 1-3? (d) What is a message called in layer 2? Layer 3 in (a) What is a signal? (b) What is propagation? (c) What is a transceiver? 2. (a) Describe the traditional Peer-to-Peer network model. What are the advantages and disadvantages? What is a common way to share resources? (b) Discuss the basic elements common to all Client/Server Networks and the common network topologies including the advantages and disadvantages. 3. Discuss the following services: a. Access Services b. Communications Services c. Management Services (a) Describe the OSI Reference Model-the 7 layers and their functions. Draw a figure and label each layer. (b) Describe the hybrid model (from the Xerox copy/on BlackBoard). Explain the standards used in TCP/IP and Hybrid Models. 4