Câu 14: 642-883: Deploying Cisco Service Provider Network Routing (SPROUTE)

When configuring IPv4 and IPv6 IS-IS routing on Cisco IOS XR routers, which three statements are correct? (Choose three.)

1. A. By default, a single SPF is used for both IPv4 and IPv6, so the IPv4 and IPv6 topology should be the same.
2. B. By default, the IS-IS router type is Level 1 and Level 2. — đáp án hiện tại
3. C. All IS-IS routers within the same IS-IS area must be configured with the same IS-IS routing process instance ID.
4. D. By default,metric-style narrow is used. — đáp án hiện tại
5. E. By default, the IS-IS interface circuit type is Level 1 and Level 2. — đáp án hiện tại
6. F. The area IS-IS address-family configuration command is used to specify the IS-IS area address.