Cisco CCNP Service Provider 350-501 Questions & Answers

• Question 81:

  Refer to the exhibit.

  

  A network engineer must configure an LDP neighborship between two newly installed routers that are located in two different offices. Router 1 is the core router in the network and it has already established OSPF adjacency with router 2. On router 1 and router 2. interface fa0/0 is configured for BFD. Which additional configuration must the engineer apply to the two devices to meet the requirement?

  A. Router1(config)#int fa0/0 Router1(config-if)#mpls ldp autoconfig

  Router2(config)#router ospf 1

  Router2(config-router)#mpls ip

  B. Router1(config)#int fa0/0 Router1(config-if)#mpls ip Router1(config-if)#mpls ldp discovery transport-address interface

  Router2(config)#int fa0/0

  Router2(config-if)#mpls ip

  Router2(config-if)#mpls ldp discovery transport-address interface

  C. Route1(config)#int fa0/0 Router1(config-if)#mpls ldp autoconfig Router1(config-if)#mpls ldp discovery interface

  Router2(config)#router ospf 1

  Router2(config-router)#mpls ldp autoconfig

  Router2(config-if)#mpls ldp discovery interface

  D. Router1(config)#int fa0/0 Router1(config-if)#mpls ip

  Router2(config)#router ospf 1

  Router2(config-router)#mpls ldp autoconfig

  Correct Answer: D

• Question 82:

  

  The service provider is serving hosts with two different multicast streams from source X and source Y. Source X is multicast group 224.0.0.0/8, and source Y is multicast group 226.0.0.0/8. Multicast source X should send its stream through

  bidirectional RP address 10.20.1.1, and multicast source Y should send its stream through RP address 10.20.2.1.

  Which configuration meets these requirements?

  A. Enable ip pim ssm default on RA and RB.

  B. Add ip pim bidir-enable in global mode on RB.

  C. Permit the source X and source Y IP addresses in the access list on RB.

  D. Set PIM sparse mode with a static RP address of 10.20.2.1 on RA and RC.

  Correct Answer: B

• Question 83:

  Which technology enables the addition of new wavelengths in a fiber-optic network?

  A. IPoDWDM

  B. CWDM

  C. DWDM

  D. ROADM

  Correct Answer: C

  Explanation: Wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single fiber [1], using different wavelengths of light to carry different signals. This allows for a greater capacity for data transfer and enables the addition of new wavelengths in a fiber-optic network

• Question 84:

  Exhibit: A network engineer must update the routing toward the web server with IP address 35.22.13.1. The primary path must be configured via the neighbor router with ID 1.1.1.1. However, local-preference configuration is not permitted on R1. Which task must the engineer perform on R1 to complete the implementation?

  

  A. Configure the device to choose the best MED from the same AS.

  B. Set the device to ignore the conditional MED if the route originated in a different autonomous system.

  C. Enable MED comparison between routes from neighbors in different AS.

  D. Implement deterministic MED to choose the best route from the different AS.

  Correct Answer: B

• Question 85:

  What is a characteristic of the YANG model?

  A. Associate types are optional for each leaf.

  B. It uses containers to categorize related nodes.

  C. It is a distributed model of nodes.

  D. Spines are used to represent individual attributes of nodes.

  Correct Answer: B

  Explanation: YANG (Yet Another Next Generation) is a data modeling language used to model configuration and state data of a network. It is used to define the data structure of configuration files and is widely used for network configuration and management. YANG uses containers to categorize related nodes, allowing for a hierarchical organization of the data. Types can be associated with each leaf, but they are not required. Spines are not used in YANG, and it is not a distributed model of nodes.

• Question 86:

  Refer to the exhibit.

  

  A NOC engineer is configuring label-based forwarding from CSR to the EPC gateway. Cell- site operation and maintenance for IPv4 traffic between 10.20.10.1 and 192.168.10.10 is already up. CR1 and CR2 are configured as route reflectors

  for AG1 and AG2.

  Which action completes the configuration?

  A. Remove address-family labeled-unicast from the BGP session-group infra on AG1 for neighbor-group core.

  B. Apply the BGP_Egress_Filter route policy to the BGP neighbor-group packet core on AG1.

  C. Configure AG1 to allocate a label to the BGP routes that are received in the BGP session group transport.

  D. Configure AG1 to allow the 300:100 and 200:100 communities in the BGP_Egress_Filter route policy.

  Correct Answer: B

• Question 87:

  What is one of the differences between Ansible and Chef?

  A. Ansible uses YAML and Chef uses Ruby.

  B. Chef requires the use of Windows in the environment and Ansible requires Linux.

  C. Chef is highly scalable and Ansible is highly secure.

  D. Ansible uses Ruby and Chef uses Python.

  Correct Answer: A

• Question 88:

  Refer to the exhibit.

  

  The network engineer is performing end-to-end MPLS path testing with these conditions:

  Users must perform MPLS OAM for all available same-cost paths from R1 to R4.

  Traceroute operations must return all of the next-hop IP details.

  Which configuration meets these requirements?

  A. traceroute mpls ipv4 10.10.10.4 255.255.255.255 verbose

  B. traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255

  C. traceroute mpls multipath ipv4 10.10.10.4 255.255.255.255 verbose

  D. traceroute mpls ipv4 10.10.10.4 255.255.255.255 source 10.10.10.1

  Correct Answer: C

• Question 89:

  Refer to the exhibit.

  

  An engineer at a new ISP must configure many Cisco devices in the data center. To make the process more efficient, the engineer decides to automate the task with a REST API. Which action does this JSON script automate?

  A. Configure the IP address for the existing loopback interface.

  B. Configure a physical interface on the router with an IP address and then create a loopback interface.

  C. Configure a physical interface on the router with an IP address.

  D. Delete the existing loopback Interface and replace it with a new loopback interface.

  Correct Answer: A

• Question 90:

  What are two features of 6RD IPv6 transition mechanism? (Choose two.)

  A. It inserts IPv4 bits into an IPv6 delegated prefix.

  B. It uses a native IPv6-routed network between CE routers and the BR router.

  C. It allows dynamic 1:N translation of IPv6 address.

  D. It uses stateful automatic 6to4 tunnels between CE routers and the BR router.

  E. It uses stateless automatic 6to4 tunnels between CE routers and the BR router.

  Correct Answer: AE