Cisco Certified Network Associate (CCNA) Practice Exam

A Data Terminal Equipment (DTE) router must have a matching Local Management Interface (LMI) type with the Data Circuit-terminating Equipment (DCE) for proper communication over Frame Relay networks. The LMI type specifies how the DTE and DCE exchange control information, including keeping track of virtual circuits and ensuring proper communication between the devices.

When a DTE device connects to a DCE device in a Frame Relay environment, they utilize the LMI protocol (such as ansi, q933a, or cisco). For effective operation, it's crucial that both devices operate using the same LMI type, as this ensures that control and management messages passed between them are understood accurately. If the LMI types are mismatched, it can lead to issues such as loss of connectivity or inability to properly establish circuits, impacting overall network performance.

In this context, the other options do not provide the specific requirement related to the LMI protocol that facilitates the necessary communication between a DTE and DCE. Physical and logical connections refer to the layers of the OSI model but do not specifically address the requirement for matching LMI types. A secondary connection is not relevant in the context of LMI and does not align with the needs of the D