300-420

Practice 300-420 Exam

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Latest 300-420 Exam Dumps Questions

The dumps for 300-420 exam was last updated on Jun 02,2026 .

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Question#1

Refer to the exhibit. A network engineer is designing an OSPF solution to connect a company's remote to a newly provisioned MPLS VPN backbone. Some of the branches have a direct dark fiber connection between each other. The engineer wants to ensure that the dark fibers are used only when the MPLS core is unavailable.
Which solution must the engineer choose?

A. Stub area

B. Sham link

C. Virtual link

D. NSSA

Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-16/iro-xe-16-book/iro-sham-link.html

Question#2

An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area.
Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?

A. not so stubby

B. totally not so stubby

C. totally stubby area

D. stubby area

Question#3

DRAG DROP
Drag and drop the properties from the left onto the protocols they describe on the right.

Question#4

How is sub-second failure of a transport link detected in a Cisco SD-WAN network?

A. Hellos are sent between the WAN Edge routers and the vSmart controller.

B. BFD runs on the IPsec tunnels between WAN Edge routers.

C. BGP is used between WAN Edge routers and the vSmart controller.

D. Link state change messages are sent between vSmart controllers.

Question#5

When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?

A. encapsulation of traffic with GRE or VTI

B. IPsec forwarding using transport mode

C. additional bandwidth for headend

D. IPsec forwarding using tunnel mode

Exam Code: 300-420 Q & A: 339 Q&As Updated: Jun 02,2026

Full 300-420 Exam Dumps Here

Exam Code: 300-420
Q & A: 339 Q&As
Updated: Jun 02,2026

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