Free Implementing and Operating Cisco Service Provider Network Core Technologies 350-501 Exam Practice Test

BGP has been implemented on a IOS XR router. Which configuration sends BGP IPv4 labels to build inter-domain LSPs?

• router bgp 65515 address-family ipv4 unicast neighbor 172.16.70.23 send-community extended
• router bgp 65515 no bgp default ipv4-unicast
• router bgp 65515 address-family ipv4 unicast neighbor 172.16.70.23 send-community
• router bgp 65515 neighbor 172.16.70.23 address-family ipv4 labeled-unicast

What are two features of stateful NAT64? (Choose two.)

• It uses address overloading.
• It provides 1:N translations, so it supports an unlimited number of endpoints.
• It requires IPv4-translatable IPv6 address assignments.
• It requires the IPv6 hosts to use either DHCPv6-based address assignments or manual address assignments.
• It provides 1:1 translation, so it supports a limited number of endpoints.

Which statement about Network Services Orchestrator (NSO) is true?

• It is used only in service provider environments
• It can be used only with XML coding
• It uses YANG modeling language to automate devices
• It must use SDN as an overlay for addressing

How does model-driven telemetry use YANG?

• to reset network devices that malfunction
• to set informs and traps on clients to report back to a centralized server
• to subscribe to data that is streamed from a device
• to poll network devices on a 30-minute interval

Which capability does the MPLS TE FRR facility backup protection method provide?

• defining the set of characteristics for the backup TE LSP
• leveraging label stacking to protect selected TE LSPs using a single backup TE LSP
• creating a bypass LSP for each protected LSP at each point of local repair
• assigning a backup TE LSP tunnel to the protected node at the headend of the protected TE LSP

After implement MPLS protocol for multiple VRFs on a single Cisco device, the engineer notices all VRFs on the router still do to not LDP session protection feature enabled. Which configuration must the engineer apply to enable the LDP session protection feature FOR LDP neighbors within each VRF?

• Configure LDP session protection globally on the device only.
• Configure LDP session protection globally on the device and on each neighbor that requires session protection.
• Configure LDP session authentication on the device to enable LDP session protection on each VRF automatically.
• Configure LDP session protection within the individual VRFs.

Which statement about the Cisco MPLS TE forwarding adjacency feature is true?

• It enables the headend and tailend routers to establish a bidirectional tunnel
• It enables the tailend router to advertise routes to the headend router over the tunnel
• It enables the MPLS core to use EIGRP as the routing protocol
• It enables the Cisco MPLS TE tunnel to be advertised into the running IGP.

Which feature describes the weight parameter for BGP path selection?

• Its value is local to the router
• Its value is set either locally or globally.
• Its default value is 0.
• Its value is global to the router.

How does Cisco MPLS TE use OSPF extensions to allow for optimized transit between a headend router and a destination router?

• Router LSAs share router link advertisements to each router within the MPLS environment so that tunnels can be built bidirectionally.
• ASBR Summary LSAs share OSPF domain information so that the two routers know how to reach each other during tunnel setup.
• Network LSAs share RSVP information to build the tunnel between the two routers.
• Opaque LSAs calculate and establish unidirectional tunnels that are set according to the network constraint.

A customer of an ISP requests support to setup a BGP routing policy. Which BGP attribute should be configured to choose specific BGP speakers as preferred exit points for the customer AS?

• highest local preference outbound
• lowest local preference inbound
• highest local preference inbound
• lowest multi-exit discriminator