1.1 Describe Service Provider Architectures 350-501 Practice Questions (Page 8)

Questions 36–40

1. 36expert · hard

   A service provider is considering SRv6 for its new core network. The provider has a requirement to support both traffic engineering and service chaining (e.g., firewall and DPI) without deploying additional protocols. Which feature of SRv6 makes this possible?

   • ASRv6 SIDs can encode both path segments and service functions, allowing in-network programming
   • BSRv6 requires a separate service chaining protocol such as NSH
   • CSRv6 only supports path encoding, not service functions
   • DSRv6 uses MPLS labels for both path and service identification
   Reveal Solution Discussion Select an answer first
2. 37application · medium

   A service provider is planning a new long-haul transport network between two major cities. The network will carry multiple 100 Gbps services. The provider wants to maximize fiber utilization and reduce the number of fibers required. Which technology should be used?

   • AxPON with passive splitters
   • BTDM using SONET/SDH
   • CEthernet over copper using bonding
   • DDWDM with multiple wavelength channels on a single fiber pair
   Reveal Solution Discussion Select an answer first
4. 38application · medium

   A service provider is considering a routed optical network to simplify its transport architecture. The provider currently has separate IP/MPLS and optical transport layers. What is a primary benefit of a routed optical network?

   • AProviding Layer 2 VPN services
   • BReducing the need for IP routing
   • CEliminating the separate optical transport layer by integrating IP and DWDM
   • DIncreasing the number of wavelengths per fiber
   Reveal Solution Discussion Select an answer first
5. 39foundation · easy

   What is a segment list in Segment Routing Traffic Engineering (SRTE)?

   • AThe list of routers in the network that are SR-capable
   • BThe ordered list of SIDs that defines an explicit path
   • CThe list of adjacency SIDs on a single router
   • DThe list of labels in the SRGB
   Reveal Solution Discussion Select an answer first
6. 40expert · hard

   A service provider is considering a routed optical network to reduce costs. The provider currently has a separate IP/MPLS core and an optical transport network with ROADMs. The provider wants to eliminate the optical transport layer and use IP-over-DWDM. Which trade-off should be considered?

   • ARouted optical networks eliminate the need for IP routing protocols.
   • BRouted optical networks provide better protection than a separate optical layer.
   • CRouted optical networks increase the number of wavelengths but require more optical amplifiers.
   • DRouted optical networks reduce capital and operational costs but may increase the complexity of IP routing and require more powerful routers.
   Reveal Solution Discussion Select an answer first