CompTIA Network+ N10-006 Q12

Which of the following protocols uses label-switching routers and label-edge routers to forward traffic?

A. Multilayer switch
B. Access point
C. Analog modem
D. DOCSIS modem

Correct Answer: C
Section: Network architecture


Before ADSL broadband connections became the standard for Internet connections, computers used analog modems to connect to the Internet. By today’s standards, analog modems are very slow typically offering a maximum bandwidth of 56Kbps. An analog modem (modulator/demodulator) converts (modulates) a digital signal from a computer to an analog signal to be transmitted over a standard (POTS) phone line. The modem then converts (demodulates) the incoming analog signal to digital data to be used by the computer. An analog modem uses an RJ-11 connector to connect to a phone line (POTS) in the same way a phone does.