Which protocols are used for switch trunk encapsulation? VLAN Trunking…

2023

Which protocols are used for switch trunk encapsulation?

  1. VLAN Trunking Protocol (VTP)

  2. VLAN

  3. IEEE 802.1Q

  4. ISL

  1. A.

    1 and 2

  2. B.

    3 and 4

  3. C.

    1 only

  4. D.

    2 only

Attempted by 107 students.

Show answer & explanation

Correct answer: B

Correct answer: 3 and 4.

IEEE 802.1Q and ISL are trunk encapsulation methods. They identify VLAN-tagged traffic as it crosses a trunk link between switches.

  • VTP: VLAN Trunking Protocol distributes VLAN database information, but it is not the trunk encapsulation protocol itself.

  • VLAN: A VLAN is the logical network segment, not an encapsulation protocol.

Therefore, the protocols used for trunk encapsulation are 802.1Q and ISL.

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