Refer to the exhibit. Which configuration must be applied to R1 to enable R1 to reach the server at 172.16.0.1?

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

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In a traditional 3 tier topology, an engineer must explicitly configure a switch as the root bridge and exclude it from any further election process for the spanning-tree domain. Which action accomplishes this task?

• A.Configure the spanning-tree priority to 32768
• B.Configure root guard and portfast on all access switch ports.
• C.Configure BPDU guard in all switch-to-switch connections.
• D.Configure the spanning-tree priority equal to 0.

Correct Answer: B

Explanation

Root guard does not allow the port to become a STP root port, so the port is always STP-designated. If a better BPDU arrives on this port, root guard does not take the BPDU into account and elect a new STP root.
Instead, root guard puts the port into the root-inconsistent STP state which is equal to a listening state. No traffic is forwarded across this port.
Reference: http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10588-74.html

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What are two functions of IGMP snooping? (Choose two.)

• A.Determining the ports that should receive multicast traffic from certain sources or groups.
• B.Restricting multicast packets for IP multicast groups that have downstream receivers.
• C.Constraining multicast traffic to VPLS interfaces.
• D.Learning and maintaining multicast group memberships at the Layer 2 level.
• E.Enabling hosts in a UDLR environment to join a multicast group sourced from an upstream network.

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Reter to the exhibit.

Refer to the exhibit. Which configuration must be added to enable GigabitEthemet 0/1 to participate in OSPF?

• A.SF_router (config-router)# network 10.10.1.0 0.0.0.255 area 0
• B.SF_router (conflg-routerp) network 10.10.1.0 0.0.0.255 area 1
• C.SF_rouler (contlg-rouler)# network 10.10.1.0 255.255.255.0 area 0
• D.SF_rouier (conng)# network 10.10.1.0 0.0.0.255 area 1

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What does the Cisco DNA Center use to enable the delivery of applications through a network and to yield analytics for innovation?

• A.process adapters
• B.Command Runner
• C.intent-based APIs
• D.domain adapters

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