多项选择题 Which of the routing protocols shown below support both VLSM and route summarization?（）

单项选择题 You need to choose a routing protocol for a new Testking network. This network will be running IP, IPX, and Appletalk, and you wish to utilize only one routing protocol. Which one would be the best choice?（）

多项选择题 You need to configure a single router into load balancing traffic across 4 unequal cost paths. Which routing protocols can satisfy this requirement?（）