Câu 58: 4A0-100: Nokia Scalable IP Networks

Using Q-in-Q Virtual Local Area Network (VLAN) stacking, how does a carrier differentiate one customers traffic from that of another?

1. A. The provider edge (PE) switch adds an additional field called a PE tag to the customers Layer 2 data.
2. B. The PE switch replaces the customers VLAN tag with a carrier-assigned tag.
3. C. The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network. — đáp án hiện tại
4. D. The PE switch assigns a customer-specific priority label to the customers traffic.