300-420 Real Exam Dumps Questions and answers 1-10

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Question No.1

Which routes does the overlay management protocol advertise in an SD-WAN overlay?

A.

underlay, MPLS, and overlay

B.

primary, backup, and load-balanced

C.

prefix, TLOC, and service

D.

Internet, MPLS, and backup

Correct Answer: C

Question No.2

When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)

A.

nonbroadcast multiaccess

B.

multiaccess

C.

point-to-multipoint

D.

nonbroadcast

E.

point-to-point

Correct Answer: BE

Question No.3

Which control-plane technology allows the same subnet to exist across multiple network locations?

A.

LISP

B.

VXLAN

C.

FabricPath

D.

ISE mobility services

Correct Answer: B

Question No.4

A router running ISIS is showing high CPU and bandwidth utilization. An engineer discovers that the router is configured as L1/L2 and has L1 and L2 neighbors. Which step optimizes the design to address the issue?

A.

Make this router a DIS for each of the interfaces

B.

Disable the default behavior of advertising the default route on the L1/L2 router

C.

Configure the router to be either L1 or L2

D.

Configure each interface as either L1 or L2 circuit type

Correct Answer: D

Question No.5

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.

Correct Answer: B

Question No.6

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

Correct Answer: A

Question No.7

An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?

A.

Native

B.

IEEE

C.

OpenConfig

D.

IETF

Correct Answer: D

Question No.8

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

Correct Answer: C

Question No.9

Which QoS feature responds to network congestion by dropping lower priority packets?

A.

CBWFQ

B.

tail drop

C.

WRED

D.

strict priority

Correct Answer: C

Question No.10

An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured VLANs must be grouped in two SIP instances. Which standards- based Spanning Tree technology supports this design solution?

A.

MSTP

B.

RSTP

C.

Rapid PVST

D.

STP

Correct Answer: A

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