Questions : CCNA Exam

When connecting a serial cable from the CSU/DSU to your Cisco router, what two standards are supported on the Cisco end of the connection? (Choose 2.)

A. EIA/TIA-449

B. Smart Serial

C. DB-60

D. RJ-45

Answer :
B and C. Cisco routers typically support DB-60, which is a 60-pin connection. Only one DB-60 interface is supported per WIC card. Because of this, Cisco developed the Smart Serial connector, which is much smaller and supports more condensed interfaces. Answer A is incorrect because EIA/TIA-449 connects to the CSU/DSU side of the connection. Answer D is incorrect because this is a LAN interface standard