1.1 Describe Service Provider Architectures 350-501 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the primary benefit of Unified MPLS (Seamless MPLS) in a service provider network?

   • AIt replaces MPLS with Segment Routing in the core.
   • BIt only applies to the core domain and does not affect access or aggregation.
   • CIt extends MPLS from the core through the aggregation and access domains, providing end-to-end MPLS services.
   • DIt eliminates the need for IP routing in the access network.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A service provider is evaluating SRv6 for a new greenfield network. The provider wants to simplify the network by removing MPLS from the data plane and using native IPv6 forwarding. Which statement correctly describes a key advantage of SRv6 over MPLS-based SR?

   • ASRv6 is only supported on Cisco hardware, not on other vendors
   • BSRv6 uses a 128-bit SID encoded in an IPv6 extension header, allowing for more flexible and scalable network programming
   • CSRv6 requires a separate MPLS control plane and label distribution protocol
   • DSRv6 only supports a single segment in the header, limiting path flexibility
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A service provider is designing the transport network for a 5G vRAN deployment. The provider needs to carry IQ data between the Remote Radio Head (RRH) and the Distributed Unit (DU) with very low latency and high bandwidth. Which transport technology and interface should be used?

   • AIP/MPLS with standard QoS
   • BCPRI over TDM
   • CeCPRI over Ethernet with time-sensitive networking (TSN)
   • DEthernet with best-effort delivery
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A service provider is migrating its MPLS core from LDP to Segment Routing (SR) to simplify label distribution. The network uses OSPF as the IGP. The provider wants to ensure that SR labels are allocated consistently across all routers. What must be configured to achieve this?

   • ALDP on all routers to distribute SR labels
   • BBGP-labeled unicast for all prefixes
   • CRSVP-TE on all routers for label reservation
   • DA common SRGB (Segment Routing Global Block) on all routers
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A mobile service provider is planning a 5G standalone deployment with network slicing. The provider wants to support a low-latency slice for autonomous vehicles and a high-bandwidth slice for video streaming. The provider also wants to use a vRAN architecture with ORAN interfaces. Which combination of core and transport design best meets these requirements?

   • AEPC with MME and SGW, and a CPRI-based fronthaul
   • B5GC with a single UPF for all slices and a best-effort transport network
   • C5GC with separate UPF instances per slice and a transport network that supports eCPRI fronthaul and end-to-end QoS
   • DEPC with a single PGW and a TDM-based fronthaul
   Reveal Solution Discussion Select an answer first