Which technology is used to provide Layer 2 and Layer 3 logical networks in the Cisco SD-Access architecture?

• A.underlay network
• B.VPN routing/forwarding
• C.easy virtual network
• D.overlay network

Correct Answer: D

Explanation

An overlay network creates a logical topology used to virtually connect devices that are built over an arbitrary physical underlay topology.
An overlay network is created on top of the underlay network through virtualization (virtual networks). The data plane traffic and control plane signaling are contained within each virtualized network, maintaining isolation among the networks and an independence from the underlay network.
SD-Access allows for the extension of Layer 2 and Layer 3 connectivity across the overlay through the services provided by through LISP.
Reference: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html

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Refer to the exhibit.

Which JSON syntax is derived from this data?

• A.Option C
• B.Option A
• C.Option D
• D.Option B

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A GRE tunnel is down with the error message %TUN-5-RECUR DOWN:

Which two options describe possible causes of the error? (Choose two)

• A.There is link flapping on the tunnel
• B.Incorrect destination IP addresses are configured on the tunnel
• C.The tunnel mode and tunnel IP address are misconfigured
• D.There is instability in the network due to route flapping
• E.The tunnel destination is being routed out of the tunnel interface

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Refer to the exhibit. A network engineer configures a GRE tunnel and enters the show Interface tunnel command. What does the output confirm about the configuration?

• A.The keepalive value is modified from the default value.
• B.The physical interface MTU is 1476 bytes.
• C.The tunnel mode is set to the default.
• D.Interface tracking is configured.

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Refer to the exhibit.

An engineer is designing a guest portal on Cisco ISE using the default configuration. During the testing phase, the engineer receives a warning when displaying the guest portal. Which issue is occurring?

• A.The server that is providing the portal has an expired certificate
• B.The connection is using an unsupported browser
• C.The server that is providing the portal has a self-signed certificate
• D.The connection is using an unsupported protocol

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