WAN Practice Questions

CSU/DSU Interface

Home     Previous      Next

Q3. Your router is connect to the service provider through a CSU/DSU. Choose appropriate interfaces used in correct order, starting from the router interface.

A. 60-pin D-shell connector --> EIA/TIA 232 --> RJ 45

B. 60-pin D-shell connector --> RJ 45 --> EIA/TIA 232

C. RJ 45 --> 60-pin D-shell connector --> EIA/TIA 232

D. EIA/TIA 232 --> RJ 45 --> 60-pin D shell connector

Correct Answer: A


Traditionally, the router interface on a serial link is a 60-pin D-shell connector. The CSU/DSU may have EIA/TIA 232 interface to the router. The CSU/DSU interface to the service provider could be RJ-11, RJ-45 etc.

Home     Previous      Next

Disclaimer: Simulationexams.com is not affiliated with any certification vendor, and Sim-Ex™ Practice Exams are written independently by SimulationExams.com and not affiliated or authorized by respective certification providers. Sim-Ex™ is a trade mark of SimulationExams.com or entity representing Simulationexams.com.CCNA™ is a trademark of Cisco® systems