Which option correctly identifies the interface or interfaces used to connect the router to a CSU/DSU for WAN connectivity?

This correct answer is image 4 ( last image ).
Related exam: Network Fundamentals - CCNA Exploration 1: ENetwork Final Exam
Which option correctly identifies the interface or interfaces used to connect the router to a CSU/DSU for WAN connectivity?

This correct answer is image 4 ( last image ).
Related exam: Network Fundamentals - CCNA Exploration 1: ENetwork Final Exam