An administrator is investigating a failure on a trunk link between a Cisco switch and a switch from another vendor. After a few show commands, the administrator notices that the switches are not negotiating a trunk. What is a probable cause for this issue?

IT Questions Bank › Category: CCNA › An administrator is investigating a failure on a trunk link between a Cisco switch and a switch from another vendor. After a few show commands, the administrator notices that the switches are not negotiating a trunk. What is a probable cause for this issue?

Both switches are in nonegotiate mode.
Switches from other vendors do not support DTP.
Both switches are in trunk mode.
DTP frames are flooding the entire network.

Explanation: DTP is a Cisco proprietary protocol. Non-Cisco switches do not support DTP.

Exam with this question: 3.6.4 Module Quiz - VLANs Answers