Which MPLS feature works with Constrained Shortest Path First (CSPF) to protect against the primary and secondary paths using the same link?

• A.fate-sharing
• B.policy control over LSP selection
• C.explicit null configuration
• D.LSP metrics

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You are using RSVP to signal an MPLS LSP.
Which statement is true in this scenario?

• A.A secondary path must be configured to establish an LSP.
• B.The traffic engineering database must be used for all LSPs.
• C.A primary path must be configured to establish an LSP.
• D.LSPs can be configured without any traffic engineering constraints.

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You are logged into a PE router participating in a Layer 3 VPN as defined in RFC 4364. You would like to ping the remotely connected CE router's loopback address. The address of the loopback is 122.161.2.1, the VPN routing-instance is called VPN-C.Which command will accomplish this goal?

• A.ping instance VPN-C 122.161.2.1
• B.ping vpn-instance VPN-C 122.161.2.1
• C.ping routing-instance VPN-C 122.161.2.1
• D.ping VPN-C 122.161.2.1

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Click the Exhibit button.

Referring to the exhibit, which statement is correct?

• A.R2 will be the designated router
• B.R3 will not participate in the election process
• C.R1 will not participate in the election process
• D.R4 will be the designated router

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A customer pays for the bandwidth on a per-packet basis. The network administrator wants to constrain costs and prevent Layer 2 loops on a multihomed Layer 2 WAN network.
Which technology would satisfy these requirements?

• A.MPLS over GRE
• B.Loop protection
• C.Multiple Spanning Tree Protocol
• D.Rapid Spanning Tree Protocol

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