08-16-2013 01:32 PM - edited 03-07-2019 02:58 PM
what is correct answer for the below question.
When you enable port security on an interface that is also configured with a voice VLAN, what is the maximum number of secure MAC addresses that should be set on the port?
A. No more than one secure MAC address should be set.
B. The default will be set.
C. The IP phone should use a dedicated port, therefore only one MAC address is needed per port.
D. No value is needed if the switchport priority extend command is configured.
E. No more than two secure MAC addresses should be set.
08-16-2013 05:09 PM
E.
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08-16-2013 06:40 PM
why not B ?
08-16-2013 07:38 PM
B doesn't answer the question.
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08-16-2013 08:49 PM
Answer is E if only Cisco IP phone connected or PC with IP communicator.
But if used standard scheme switch--IP Phone--PC, than 3 mac addresses must be set. Cos on practice during IP Phone boot up process it will use 1 mac in Voice vlan and 1 mac in Data vlan (for DHCP server communication I suggest), and third mac address will be used by PC.
But in your question only option E can be possible right answer.
08-16-2013 09:00 PM
Dinesh,
I would agree with Alex and Jeff.
My answer would also go with E.
Usually, an IP Phone needs two MAC addresses, one for the voice vlan and one for the access vlan. If you don’t want other devices to access this port then you should not set more than two secure MAC addresses.
HTH
Regards
Inayath
08-18-2013 07:43 AM
same question received in exam but i selected answer E.. But i am not got full marks....
08-18-2013 09:27 AM
Dinesh,
How do you know that you got wrong marks on this particular question? As per my knowledge you would not be able to know which question got wrong and which is right except guesing on the percentage you are get to see.
regards
Inayath
08-18-2013 01:15 PM
Hi Everyone,
I agree correct answer should be E and there is no way in exam to know if answer is right or wrong.
Regards
Mahesh
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