What method is used to measure modem speed?

What method is used to measure modem speed?

• A. Baud rate
• B. Bit rate
• C. Latency
• D. Jitter

Answer: (A)

Modem speed is defined by how quickly the transmitter can change the signal on the line, which is the symbol rate. That rate is called baud rate. Each symbol change carries a certain amount of information (bits) depending on the modulation scheme, so the actual data throughput (bits per second) can be higher or lower than the baud rate. So, baud rate is the measurement of the signaling speed of the connection, reflecting how fast the modem can modulate the line itself. The bit rate describes how many bits are transmitted per second, which depends on how many bits are packed into each symbol. Latency and jitter describe timing issues in the network, not the speed of the modem’s signal changes. In older modems with simple modulation, baud rate and bit rate align, but as modulation becomes more efficient, they can diverge, making baud rate the best term to describe the basic measurement of modem signaling speed.

Modem speed is defined by how quickly the transmitter can change the signal on the line, which is the symbol rate. That rate is called baud rate. Each symbol change carries a certain amount of information (bits) depending on the modulation scheme, so the actual data throughput (bits per second) can be higher or lower than the baud rate. So, baud rate is the measurement of the signaling speed of the connection, reflecting how fast the modem can modulate the line itself. The bit rate describes how many bits are transmitted per second, which depends on how many bits are packed into each symbol. Latency and jitter describe timing issues in the network, not the speed of the modem’s signal changes. In older modems with simple modulation, baud rate and bit rate align, but as modulation becomes more efficient, they can diverge, making baud rate the best term to describe the basic measurement of modem signaling speed.