Câu 67: 300-510: Implementing Cisco Service Provider Advanced Routing Solutions (SPRI)

Refer to the exhibit. Company A established BGP sessions with several ISPs. A network engineer at the company must filter out all traffic except for routes that transit AS 152. The engineer configured the filtering policy "permit _152$_(_[0-9])" on R1, but after applying the configuration, the engineer notices that other routes are still visible. Which action resolves the issue?

1. A. Add a second filtering policy in the format ip access-list 1 permit ^152_([0-9]+).
2. B. Add a second filtering policy in the format ip prefix-list 1 permit ^152^.
3. C. Change the filtering policy to ip explicit-path 1 permit $152^.
4. D. Change the filtering policy to ip as-path access-list 1 permit _152_. — đáp án hiện tại