Free Cisco 300-420 Exam Questions

Become Cisco Certified with updated 300-420 exam questions and correct answers

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Total 342 Questions | Updated On: Jan 15, 2026

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Question 1

An engineer is designing a multicast network for a financial application Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?

A : BIRDIR-PIM

B : PIM-SM

C : MSDP

D : PIM-SSM

Answer: A

Question 2

Which control plane protocol is responsible for ElD-to-RLOC mapping concerning SO-Access Architecture?

A : AC

B : P

C : F

D : LAN

Answer: B

Question 3

A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

A : Use EIGRP to establish a neighbor relationship with the main office via

B : L3VPN MPLS and the IPSEC VPN tunnel.

C : Use BGP with the multipath feature enabled to force traffic via the primary path when available.

D : Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.

E : Use OSPF with a passive-interface command on the backup connection.

Answer: D

Question 4

Which consideration must be taken into account when using the DHCP relay feature in a Cisco SD-Access Architecture?

A : DHCP-relay must be enabled on fabric edge nodes to provide the correct mapping of DHCP scope to the local anycast gateway.

B : DHCP servers must support Cisco SD-Access extensions to correctly assign IPs to endpoints in an SD-Access fabric with anycast gateway.

C : DHCP Option-82 must be enabled to map the circuit IP option to the access fabric node where the DHCP discover originated.

Answer: C

Question 5

An engineer must use YANG with an XML representation to configure a Cisco IOS XE switch with thesespecifications:IP address 10.10.10.10/27 configured on the interface GigabitEthernet2/1/0connectivity from a directly connected host 10.10.10.1/27Which YANG data model set must the engineer choose?

A :

B :

C :

D :

Answer: D

Page: 1 / 69

Total 342 Questions | Updated On: Jan 15, 2026

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