Which two steps must you perform to enable router-on-a-stick on a switch?

Which two steps must you perform to enable router-on-a-stick on a switch? (Choose two.)
A. Configure an IP route to the VLAN destination network.
B. Connect the Router to a trunk port.
C. Configure full duplex.
D. Configure the subinterface number exactly the same as the matching VLAN.
E. Assign the access port to a VLAN.

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10 thoughts on “Which two steps must you perform to enable router-on-a-stick on a switch?

  1. Cisco CCNA questions are many times full of ambiguity, which leaves the student genuinely confused. I guess one has to find the closest possible answer which may not be absolutely true but it should be the closest. That is why some people hate these questions with duality as its nature. Here B and E are the closest(from switch point of view) and hence seem to be true!!

  2. Question is : to enable router-on-a-stick on a ‘SWITCH’ ?
    Correct answers:
    B. Connect the Router to a trunk port. : since a trunk port can only configured to carry multiple VLANs which is needed.
    E. Assign the access port to a VLAN. : since the ports between which communication is sought are to be added to VLAN.

  3. I think this one is right. Come to think of it, if you are assigning a single interface as a trunk and all communication of different vlans has to go through that port, it has to be a full duplex. Besides, why do you have to assign access port to a vlan, well in fact, it has nothing to do with trunking? Isn’t it nonsense, right?

  4. My practice exam at udemy.com tells me that the correct answers are B and E, not B and C. And I did some looking around and couldn’t find any evidence that full duplex is required for router-on-a-stick. I don’t altogether trust udemy.com’s practice exam but I think they may be right in this case.

    1. I think this one is right. Come to think of it, if you are assigning a single interface as a trunk and all communication of different vlans has to go through that port, it has to be a full duplex. Besides, why do you have to assign access port to a vlan, well in fact, it has nothing to do with trunking? Isn’t it nonsense, right?

      1. “Besides, why do you have to assign access port to a vlan, well in fact, it has nothing to do with trunking? Isn’t it nonsense, right?” …… !?

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