1.1 Describe Service Provider Architectures 350-501 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A service provider is deploying a new FTTH network in a suburban area. The provider wants to use a passive optical network to minimize active equipment in the field and reduce power consumption. Which architecture should the provider deploy?

   • AVDSL2 with a DSLAM in the street cabinet
   • BDOCSIS with a CMTS in the headend
   • CActive Ethernet with a switch in each neighborhood
   • DGPON with an OLT in the central office and passive optical splitters in the field
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A service provider is evaluating SRv6 for its new core network. The network is IPv6-only and the provider wants to support traffic engineering and network slicing. The provider is considering SRv6 vs SR-MPLS. Which advantage of SRv6 is most significant for this use case?

   • ASRv6 requires fewer SIDs than SR-MPLS for the same path.
   • BSRv6 eliminates the need for IGP extensions.
   • CSRv6 SIDs are IPv6 addresses, allowing integration with IPv6 routing and enabling services like network slicing without MPLS.
   • DSRv6 provides better performance than SR-MPLS due to smaller header overhead.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A service provider is adopting Open RAN (ORAN) to avoid vendor lock-in. The provider wants to ensure that the fronthaul transport supports the open interfaces between the O-RU and O-DU. Which transport requirement is essential for ORAN fronthaul?

   • AA dedicated TDM network for fronthaul
   • BUse of proprietary CPRI links between O-RU and O-DU
   • CA single-vendor solution for the entire RAN
   • DSupport for eCPRI over a packet-switched network with strict synchronization
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A mobile service provider is deploying a 5G standalone core. The provider wants to support network slicing and low-latency services. Which core architecture should the provider implement?

   • AA traditional TDM-based core network
   • BA metro Ethernet core with E-LINE services
   • C5G Core (5GC) with a service-based architecture (SBA) and network functions such as AMF, SMF, and UPF
   • DEvolved Packet Core (EPC) with MME, SGW, and PGW
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A service provider is designing a new MPLS core. The network will carry both L3VPN and L2VPN services. The provider wants to implement Segment Routing (SR) for label distribution and also needs traffic engineering to optimize bandwidth utilization. The provider is considering whether to use SRTE with a central controller or RSVP-TE. Which factor should most influence the decision?

   • ARSVP-TE is required for L2VPN services, so SRTE cannot be used.
   • BSRTE requires a full mesh of RSVP-TE tunnels, so it is not scalable.
   • CSRTE cannot provide explicit paths, so RSVP-TE is necessary.
   • DSRTE provides traffic engineering without RSVP-TE, simplifying the network and reducing state, but requires a controller for optimal path computation.
   Reveal Solution Discussion Select an answer first