How does the logical topology differ from the physical topology? What advantages of the logical star topology have as compared to the logical bus topology? What is the OSI model? Why is it important for understanding networking? What is the difference between connectionless and connection-oriented services? How does TCP differ from UDP? How does SSH differ from Telnet? How does HTTPS differ from HTTP? Why are wires twisted together in twisted pair cables? You have an installation that requires Cat 5 cabling. Which cable ratings could you use for the installation? Is twisted pair cable more immune to EMI than coaxial cable? What advantages do fiber optic cables offer over twisted pair cables and other media choices? What are the disadvantages of implementing fiber optic cables? What is the difference between single-mode and multimode cables?