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

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.

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Which three elements determine Air Time efficiency? (Choose three)

• A.evert-driven RRM
• B.data rate (modulation density) or QAM
• C.channel bandwidth
• D.number of spatial streams and spatial reuse
• E.RF group leader
• F.dynamic channel assignment

Correct Answer: B,C,D

Explanation
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKEWN-3010.pdf Graphical user interface Description automatically generated with low confidence

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Refer to the exhibit. An engineer must ensure that all traffic entering AS 200 form AS 100 chooses link 2 an enter all BGP neighbor relationship have been formed and that attributes have not been changed on any of the router.

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

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What are two device roles in Cisco SD-Access fabric? (Choose two.)

• A.core switch
• B.vBond controller
• C.edge node
• D.access switch
• E.border node

Correct Answer: C,E

Explanation
There are five basic device roles in the fabric overlay:
+ Control plane node: This node contains the settings, protocols, and mapping tables to provide the endpoint-to-location (EID-to-RLOC) mapping system for the fabric overlay.
+ Fabric border node: This fabric device (for example, core layer device) connects external Layer 3 networks to the SDA fabric.
+ Fabric edge node: This fabric device (for example, access or distribution layer device) connects wired endpoints to the SDA fabric.
+ Fabric WLAN controller (WLC): This fabric device connects APs and wireless endpoints to the SDA fabric.
+ Intermediate nodes: These are intermediate routers or extended switches that do not provide any sort of SD-Access fabric role other than underlay services.

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A network administrator has designed a network with two multilayer switches on the distribution layer, which act as default gateways for the end hosts. Which two technologies allow every end host in a VLAN to use both gateways? (Choose two)

• A.VRRP
• B.GLBP
• C.VSS
• D.MHSRP
• E.HSRP

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