CompTIA Network+

Answer: B - V.90 is an ITU-T recommendation for a modem, allowing a 56 Kbit/s download and 33.6 Kbit/s upload using the RJ-11 connector.

Key Takeaway:RJ-11 is the standard connector utilized on 2-pair 4-wire telephone wiring. RJ stands for Registered Jack, a physical connector interface most often used for telephone wire terminals. RJ-11 connectors have 6 connector positions, of which either only 2 or 4 are actually utilized.