Which concept describes the calculations of gains and losses to ensure a signal can be received with sufficient quality (SNR) in a satellite link?

• A. Latency
• B. Link budget
• C. Uplink speed
• D. Token length

Answer: (B)

Link budgets describe the calculations of gains and losses to ensure a signal can be received with sufficient quality (SNR) in a satellite link. By accounting for transmitter power and antenna gains, the free-space path loss, atmospheric and hardware losses, and the receiver’s sensitivity plus noise, you determine the received signal strength. The aim is to ensure the received power yields an SNR high enough for reliable demodulation and data receipt, often with a margin for weather, pointing errors, and equipment aging. That makes this concept the best fit. Latency focuses on delay, uplink speed on data rate, and token length on a protocol parameter, none of which describe the overall gains/losses and noise that define SNR in a satellite link.