多项选择题 RIP version 2 is being used as the routing protocol within the Testking network.What does RIP version 2 use to prevent routing loops?（）

单项选择题 You need to implement the use of a routing protocol that meets the following requirements: 1. Converges quickly 2. Supports VLSM, CIDR, IP, and IPX. 3. Uses minimal bandwidth for routing updates. Which one of the following routing protocols would be the best choice?（）

多项选择题 Which of the following routing protocols do NOT support VLSM (variable length subnet masking)?（）