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Switch Questions

September 18th, 2017 in SWITCH 300-115 Go to comments

Question 1


The command “mac address-table aging-time 180” specifies the time before an entry ages out and is discarded from the MAC address table. The default is 300 seconds. Entering the value 0 disables the MAC aging.

Question 2

Question 3


The switch learns which port the host is attaching by examining the source MAC address in frames received on a port. For example switch receives a frame with source MAC of 0000.0000.aaaa (abbreviated as “aaaa”) on port Fa0/1, it populates its MAC address-table with an entry like this “host aaaa on Fa0/1”. If the switch receives a frame with the same “aaaa” MAC from Fa0/2 then there will be a flap and the switch will log something like this:

%MAC_MOVE-SP-4-NOTIF: Host 0000.0000.aaaa in vlan 1 is flapping between port 0/1 and port 0/2

This flapping phenomenon may be the result of a Layer loop somewhere in your network, especially when STP is disabled for some reasons.

If you don’t want to see this message then issue the “no mac-address-table notification mac-move” or place a static entry with the “mac-address-table static 000.0000.aaaa vlan 1 interface fa0/1″on the switch. The command “mac-address-table notification mac-move” is disabled by default on 6500 & 7600 series but enabled by default on other series.

Question 4


The command “show mac address-table” displays the MAC address table along with the port associated for the switch. The ‘show mac address-table address ” gives a more specific view of a specific MAC address.

Question 5

Question 6

Question 7

Question 8


If an access port receives a tagged packet (Inter-Switch Link [ISL] or IEEE 802.1Q tagged), the packet is dropped, and the source address is not learned.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_55_se/configuration/guide/3750xscg/swint.html

Question 9

Question 10


The Portfast feature can be configured on both access or trunk port. This feature instructs the port to skip listening and learning state and move to forwarding state immediately.

The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. The simple example below shows how to configure voice VLAN on an interface:

interface fastethernet0/1
switchport access vlan 10
switchport voice vlan 20

Note: This is not a trunk port (although two VLANs are configured on an interface). Cisco calls this a Multi-Vlan access port.

Question 11


An IP phone contains an integrated three-port 10/100 switch. The ports, which are dedicated connections, are described as follows:
* Port 1 connects to the Catalyst series switch or other device that supports Voice-over-IP (VoIP).
* Port 2 is an internal 10/100 interface that carries the phone traffic.
* Port 3 connects to a PC or other device.


To enhance the quality of the VoIP traffic, port 2 and port 3 are often placed in two different VLANs. The VLAN carries voice traffic to and from the IP Phone is often called auxiliary VLAN (Port 2 in this case) while the VLAN carries data traffic is often the native VLAN (Port 3 in this case).

In the picture below the auxiliary VLAN is VLAN 30 while the native VLAN is VLAN 20. To use the IP Phone these two VLANs will need to be configured on the switch.


To learn how to configure auxiliary VLAN please read: http://www.cisco.com/en/US/docs/switches/lan/catalyst4000/8.1/configuration/guide/vlans.html#wp1048863.

To learn how to configure voice and data VLAN please read: http://www.cisco.com/en/US/products/hw/switches/ps4324/products_configuration_example09186a0080722cdb.shtml.

Question 12

Comment pages
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  1. Jango
    April 26th, 2015

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  12. young
    July 2nd, 2015

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  15. certprepare
    July 27th, 2015

    @all: We had to remove the questions and asnwers because of copyrighted issues. We can only keep the explanation. We are very sorry for the inconvenience we caused. Please download this PDF file to see all the questions: https://mega.co.nz/#!9Ml1TTbb!uY_N-C3feg919PEtEyKJcK8AmaEIvhNqFzwArGSKTlI

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    July 27th, 2015

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  17. Shashank
    July 28th, 2015

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  18. HELP
    July 28th, 2015

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    July 28th, 2015

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  20. Aditya
    July 30th, 2015

    Hii all
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    July 30th, 2015

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  22. Mamad
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  23. arshad
    August 2nd, 2015

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  24. light
    August 2nd, 2015

    It is kind of a hassle to look at the questions/answers on separate pages. use
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  25. ahmed
    August 7th, 2015

    Hi please any one pass the route exam 300-101 after 9/7/2015 please tell us which Dumps was it ? thanks

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  26. Ann
    August 7th, 2015

    The questions are not showing up. I see answers but no questions. I’ve tried two different browsers

  27. Tufail
    August 22nd, 2015

    certprepare how to get updated question. This site not showing question just explanation please do something..or provide me link so that i can take updated questions

  28. files
    August 22nd, 2015

    I found this posted on 7/29/15.

    msg from certprepare: @all: We had to remove the questions and asnwers because of copyrighted issues. We can only keep the explanation. We are very sorry for the inconvenience we caused. Please download this PDF file to see all the questions: https://mega.co.nz/#!9Ml1TTbb!uY_N-C3feg919PEtEyKJcK8AmaEIvhNqFzwArGSKTlI or http://www.4shared.com/office/Y48albD9ba/SWITCH_July_2015.html

  29. Ali Ahmad khan
    August 31st, 2015
  30. Anonymous
    September 1st, 2015
  31. xyz
    September 2nd, 2015

    can some one please share the latest pass4 sure/actual tests dumps after september 01 please ?

  32. hubriskennel
    September 10th, 2015

    im going to take the exam next week. can you guys tell me what are the questions and lab sims that will come out? appreciate it.thanks..

  33. rajaratnha
    September 14th, 2015

    how to look Question? please help

  34. Anonymous
    September 23rd, 2015

    i can only see the answer,,where are the questions

  35. Ganesh
    September 24th, 2015

    Hi All,

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    September 24th, 2015

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    September 30th, 2015

    I have the SWITCH_July_2015.pdf Is this still current? I have a couple VCEs, but no current VCE sim.. anyone have some help for this?

  38. Davicsavir
    October 12th, 2015

    Hi all

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  39. Anonymous
    October 13th, 2015

    Hello all ,
    question https://mega.co.nz/#!9Ml1TTbb!uY_N-C3feg919PEtEyKJcK8AmaEIvhNqFzwArGSKTlI there are up to date ?
    I am prepare for CCNP ( switch) 300-115 and i I want to know if questions are up to data .
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  40. polocom
    October 18th, 2015

    the questions are upto date regarding the new ccnp version exam.

  41. Muhammad Siddique
    October 23rd, 2015
  42. gent
    October 30th, 2015

    why are these labs .pkt format? gns3 wont open them

  43. Anonymous
    November 3rd, 2015

    Hallo all ,
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  44. Sabinay
    November 5th, 2015

    @ certprepare, In switch july PDF file there are some missing new questions, Please provide us the latest file….

  45. N8
    November 17th, 2015

    @ certprepare, question 6 in your switch quiz is wrong
    ” You can test your knowledge with these questions first via this link.”.
    Answer is A, C and D, not B,C and D. The Storm-control is configured for broadcast, not unicast. please correct.

  46. Anonymous
    November 23rd, 2015

    anyone take and pass the switch exam lately ? Any comments on this pdf ?

  47. SAM
    November 25th, 2015

    why not
    switch# show ip arp inspection

    is included in answer ?

  48. David H
    November 30th, 2015

    Can someone please send me the latest VCE and lab sims for 300-1115. I will be taking the test next week. I already have a PDF but would like to practice on a SIM

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