Passtcert Cisco CCNA SP 640-875 SPNGN1 exam answers

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Share some CCNA SP 640-875 exam questions and answers below.
What is the default spanning-tree mode of an NNI port on a Cisco ME3400 switch? 
A. multiple spanning tree (mst) 
B. per-vlan rapid spanning tree (rapid-pvst) 
C. per-vlan spanning tree (pvst) 
D. IEEE 802.1D (stp) 
Answer: B

When two or more different routes exist to the same destination that have been learned from two different routing protocols, what does a router use to determine the best route? 
A. routing protocol metric 
B. administrative distance 
C. hop count 
D. path cost 
E. local preference 
Answer: B

Which two statements about transparent bridging operations are true? (Choose two.) 
A. A bridge builds its MAC address table dynamically using the spanning-tree protocol. 
B. A bridge operates at the data link layer. 
C. A bridge sends unknown unicast frames out on all ports except the incoming port. 
D. A bridge forwards traffic based on the destination IP address. 
E. All the ports on the bridge belong to the same collision domain. 
Answer: B,C

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