1-25. 1-26. 1-27. 1-28. 1-29. What is the minimum 1-30. percentage to be used in calculating  the  available resources for the network? 1. 10 2. 15 3. 20 4. 25 How many major types of LAN configurations  are  there? 1-31. 1. Five 2. Six 3. Three 4. Four Which of the following topologies was the earliest type? 1. Bus 2. Ring 3. Star 4. Distributed Which of the following topologies  permits centralized  diagnostics  of all  functions? 1. Bus 2. Ring 3. Star 4. Distributed Which of the following topologies is used in many low-cost  LANs? 1. Bus 2. Ring 3. Star 1-32. 4. Distributed 4 1-33. Which of the following topologies  normally  requires the entire network be brought down to add a new node? 1. Bus 2. Ring 3. Star 4. Distributed Which of the following topologies  can  be  easily adapted  to  the  physical arrangement  of  the  facility site? 1. 2. 3. 4. Bus Ring Star Distributed Which of the following protocols  is/are  used-to control  line  discipline? 1. Asynchronous  data control 2. Binary  synchronous communications 3. Synchronous  data  link control 4. Both 2 and 3 above The access method that will be used is governed primarily by which of the following  factors? 1. Protocol 2. Topology 3. Both 1 and 2 4. Network  operating  system