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Total 101 questions
Exam Code: 300-420                Update: Oct 15, 2025
Exam Name: Designing Cisco Enterprise Networks (ENSLD)

Cisco Designing Cisco Enterprise Networks (ENSLD) 300-420 Exam Dumps: Updated Questions & Answers (October 2025)

Question # 1

At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?

A.

    Layer4

B.

    Layer 2

C.

    Layer 1

D.

    Layer 3

Question # 2

Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

A.

External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.

B.

GRE tunneling can be configured between fabric edges to connect one VN to another.

C.

SGTs can be used to permit traffic from one VN to another.

D.

Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

Question # 3

Refer to the exhibit. An architect must design a solution to connect the network behind R3 with the EIGRP network. Which mechanism should be included to avoid routing loops?

A.

split-horizon

B.

summarization

C.

down bit

D.

route tags

Question # 4

An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?

A.

shaping

B.

WRED

C.

policing

D.

RED

Question # 5

What is the purpose of a border node in a Cisco SD-Access fabric?

A.

connect devices to a network

B.

perform traffic encapsulation and de-encapsulation

C.

perform network virtualization

D.

expand a network

Question # 6

A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?

A.

Local Preference

B.

MED

C.

Weight

D.

AS Path

E.

Community

Question # 7

An engineer must design a scalable QoS architecture that allows the separation of the traffic into classes on predefined business requirements. The design must also utilize the differentiated services code points as the QoS priority descriptor value and support at least 10 levels of classification. Which QoS technology should the engineer include in the design?

A.

RSVP

B.

Diffserv

C.

Best effort

D.

Interserv

Question # 8

A customer requests a VPN solution to connect multiple sites with the company headquarters. All the sites use the same IP subnet. The engineer plans to use VPLS. Which solutions must the engineer include in the design?

A.

802.1Q connectivity on the LAN side of the CE

B.

route exchange with the service provider

C.

address translation to hide overlapping subnets

D.

different VLANs on each site

Question # 9

Exhibit:

A.

Make R3 an L1L2 router.

B.

Make R31 an L1 router.

C.

Make Area 0 L2-only.

D.

Make R11 an L2 router.

Question # 10

Refer to the exhibit.

An engineer must optimize the traffic flow of the network. Which change provides a more

efficient design between the access and the distribution layer?

A.

Add a link between access switch A and access switch B

B.

Reconfigure the distribution switch A to become the HSRP Active

C.

Change the link between distribution switch A and distribution switch B to be a routed link

D.

Create an EtherChannel link between distribution switch A and distribution switch B

Page: 1 / 11
Total 101 questions

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