Câu 13: 642-883: Deploying Cisco Service Provider Network Routing (SPROUTE)

Which four statements are correct regarding IS-IS operations? (Choose four.)

1. A. By default, Level 1 routers within an IS-IS area do not carry any routing information external to the area towhich they belong. They use a default route to exit the area. — đáp án hiện tại
2. B. Summarization should be configured on the Level 2 routers, which injects the Level 2 routes into Level 1.
3. C. IS-IS supports "route leaking" in which selected Level 2 routes can be advertisedby a Level 1/Level 2 router into Level 1. — đáp án hiện tại
4. D. The IS-IS backbone is a contiguous collection of Level 1 capable routers, each of which can be in a different area.
5. E. With IS-IS, an individual router is in only one area, and the border between areas is on thelink that connects two routers that are in different areas. — đáp án hiện tại
6. F. Cisco IOS XR Software supports multitopology for IPv6 IS-IS unless single topology is explicitly configured in IPv6 address-family configuration mode. — đáp án hiện tại