1. Which two statements are true about the OSI and TCP/IP models? (Choose two.) The two bottom layers of the TCP/IP model make up the bottom layer of the OSI model. The TCP/IP model is a theoretical model and the OSI model is based on actual protocols. **The OSI network layer is comparable to the Internet layer of the TCP/IP model. The TCP/IP model specifies protocols for the physical network interconnection. **The TCP/IP model is based on four layers and the OSI model is based on seven layers. 2. To meet customer expectations, an ISP must guarantee a level of service that is based on what two factors? (Choose two.) accessibility adaptability **availability **reliability scalability 3. User1 is sending an e-mail to User2@cisco.com. What are two characteristics of the process of sending this data? (Choose two.) It utilizes TCP port 110. A TCP connection is established directly between the User1 and User2 client computers in order to send the e-mail message. **It utilizes a store and for