Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 264

What is the primary role of a BR router in a 6rd environment?

Answer options

• A. It provides connectivity between end devices and the IPv4 network
• B. It provides IPv4-in-IPv6 encapsulation
• C. It connects the CE routers with the IPv6 network
• D. It embeds the IPv4 address in the 2002::/16 prefix

Correct answer: C

Explanation

The correct answer is C because the BR router serves to connect Customer Edge (CE) routers to the IPv6 network, enabling IPv6 connectivity. Option A is incorrect as it refers to connecting end devices to the IPv4 network, which is not the primary role of the BR router. Option B discusses IPv4-in-IPv6 encapsulation, which is a function of the 6rd process but not the BR router's main role, while option D incorrectly describes the embedding of the IPv4 address.