[Free] 2018(Aug) Ensurepass Cisco 200-125 Dumps with VCE and PDF 51-60

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CCNA Cisco Certified Network Associate CCNA (v3.0)

Question No: 51 – (Topic 2)


  1. physical

  2. data link

  3. network

  4. transport

Answer: B Explanation:

RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -gt; RSTP operates at Layer 2 – Data Link layer -gt;.

Question No: 52 – (Topic 2)

What parameter can be different on ports within an EtherChannel?

  1. speed

  2. DTP negotiation settings

  3. trunk encapsulation

  4. duplex

Answer: B Explanation:

For an etherchannel to come up, the speed, duplex and the trunk encapsulation must be the same on each end.

Question No: 53 – (Topic 2)

Refer to the exhibit.

Ensurepass 2018 PDF and VCE



  2. Thirty VLANs have been configured on this switch.


  4. All interfaces that are shown are on shared media.

  5. All designated ports are in a forwarding state.


Answer: A,C,E Explanation:






Question No: 54 – (Topic 2)

Refer to the exhibit.

Ensurepass 2018 PDF and VCE






Answer: C Explanation:


Question No: 55 – (Topic 2)

Refer to the exhibit.

Ensurepass 2018 PDF and VCE

Which WAN protocol is being used?

  1. ATM

  2. HDLC

  3. Frame Relay

  4. PPP

Answer: C Explanation:

This question is to examine the show int command.


“LMI enq sent…”

Question No: 56 – (Topic 2)

Refer to the exhibit.

Ensurepass 2018 PDF and VCE






Answer: D Explanation:


Question No: 57 – (Topic 2)

Which command enables RSTP on a switch?

  1. spanning-tree uplinkfast

  2. spanning-tree mode rapid-pvst

  3. spanning-tree backbonefast

  4. spanning-tree mode mst

Answer: B Explanation:

Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802.1D protocol. The RSTP 802.1w protocol is an IEEE open implementation. Cisco has its own proprietary implementation of RSTP, that includes the benefits of its Per-VLAN spanning tree protocols, called Rapid-PVST .

To activate the Rapid-PVST protocol: switch(config)#spanning-tree mode rapid-pvst

Question No: 58 – (Topic 2)

Refer to the exhibit.

Ensurepass 2018 PDF and VCE





  4. Switch-1 will forward the data to its default gateway.

Answer: B Explanation:



Switches work as follows:

->Switches learn the MAC addresses of PCs or workstations that are connected to their switch ports by examining the source address of frames that are received on that port.

->Machines may have been removed from a port, turned off, or moved to another port on the same switch or a different switch.

->This could cause confusion in frame forwarding.

->The MAC address entry is automatically discarded or aged out after 300 seconds

->If there is not MAC address of destination host in MAC table, switch sends broadcast to all ports except the source to find out the destination host.


Question No: 59 – (Topic 2)

What is one benefit of PVST ?

  1. PVST supports Layer 3 load balancing without loops.

  2. PVST reduces the CPU cycles for all the switches in the network.

  3. PVST allows the root switch location to be optimized per VLAN.

  4. PVST automatically selects the root bridge location, to provide optimized bandwidth usage.

Answer: C Explanation:


Reference: http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.2


Question No: 60 – (Topic 2)


  1. 802.1Q native VLAN frames are untagged by default.

  2. 802.1Q trunking ports can also be secure ports.




Answer: A,C,E Explanation:


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