Cisco 300-420 Practice Test - Questions Answers, Page 10
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Refer to the exhibit.
Refer to the exhibit. Area 10 is a regular OSPF area and networks 10.1.1.0/24 and 172.16.1.0/24 are internal. Which design provides optimal routing between both networks when the link between routers C and E fails?
Move the link between routers C and D to area 10.
Create an OSPF virtual link between routers E and F.
Create a tunnel between routers E and F in area 10.
Make area 10 a not-so-stubby area.
An architect is creating a migration strategy for a large organization in which the choice made by the application between IPv6 and IPv4 is based on the DNS request. Which migration strategy does the architect choose?
AFT for public web presence
host-initiated tunnels
dual stack
site-to-site IPv6 over IPv4 tunnels
Refer to the exhibit.
Refer to the exhibit. An engineer is designing an OSPF network for a client. Requirements dictate that the routers in Area 1 should receive all routes belonging to the network, including EIGRP, except the ones originated in the RIP domain.
Which action should the engineer take?
Make area 1 a NSSA.
Make area 1 a stub.
Make area 1 a standard OSPF area.
Make the area 1 routers part of area 0.
An engineer must propose a solution for a campus network that includes the capability to create multiple Layer 3 virtual networks. Each network must have its own addressing structure and routing table for data forwarding. The solution must be scalable to support hundreds of virtual networks and allow simple configuration and management with minimal administrative overhead. Which solution does the engineer recommend?
hop-by-hop EVN
multihop MPLS core
multihop IPsec tunneling
hop-by-hop VRF-Lite
Refer to the exhibit.
Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
use multiple equal-cost links
use an IGP
use HSRP
use R-PVSTP+
use multiple unequal-cost links
An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions:
The routers will not learn any prefix with a subnet mask greater than /24.
The routers will determine the routes to include in the routing table based on the length of the mask alone.
The routers will make this selection regardless of the service provider configuration.
Which solution should the engineer include in the design?
Use a route map and access list to block the desired networks, and apply the route map to BGP neighbors inbound.
Use a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors outbound.
Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.
Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors inbound.
An engineer is designing an EIGRP network for a small branch site where there is only one Layer 3 router. The engineer wants the router to advertise the local LAN network to remote EIGRP neighbors without sending any unnecessary multicast messages on the local LAN. Which action should the engineer take?
Use a static default route for this site instead of EIGRP
Advertise the local LAN using the network command and the passive-interface feature
Redistribute the local LAN network using the redistribute connected command
Advertise the local LAN subnet as a stub network
A network engineer is redesigning a company's QoS solution. The company is currently using IP Precedence, but the engineer plans to move to DiffServ. It is important that the new solution provide backward compatibility with the current solution. Which technology should the design include?
expedited forwarding
assured forwarding
class selector code points
default per hop behavior
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals: reduce the impact of topology changes reduce the time spent on network administration reduce manual configuration errors Which two solutions should the architect include in the new design? (Choose two.)
Implement Rapid PVST+ instead of STP.
Implement MST instead of STP.
Use VTP to propagate VLAN information and to prune unused VLANs.
Configure broadcast and multicast storm control on all switches.
Configure dynamic trunking protocol to propagate VLAN information.
How is sub-second failure of a transport link detected in a Cisco SD-WAN network?
Hellos are sent between the WAN Edge routers and the vSmart controller.
BFD runs on the IPsec tunnels between WAN Edge routers.
BGP is used between WAN Edge routers and the vSmart controller.
Link state change messages are sent between vSmart controllers.
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