You are designing a system requiring the transmission of data. Your system must perform higher than ________ kHz in order to do so.

The correct answer is C. 10. Transmitting data (as opposed to voice) requires operating above 10 kHz, the threshold at which a system moves beyond the limits of standard voice telephony and into the bandwidth range capable of carrying data signals. The standard telephone voice channel occupies roughly 0–4…

Telecommunications Infrastructure Design

Question

Options

How the community answered

(32 responses)

A
9% (3)
B
3% (1)
C
78% (25)
D
3% (1)
E
6% (2)

Explanation

Transmitting data (as opposed to voice) requires operating above 10 kHz, the threshold at which a system moves beyond the limits of standard voice telephony and into the bandwidth range capable of carrying data signals. The standard telephone voice channel occupies roughly 0–4 kHz of bandwidth, and its Nyquist sampling rate is 8 kHz - so options A (4 kHz) and B (8 kHz) describe voice-grade thresholds, not data-transmission capability. Options D (16 kHz) and E (32 kHz) exceed the minimum requirement and would describe higher-fidelity audio or specific broadcast standards, making them too high to be the minimum threshold for data.

Memory tip: Think "8 kHz = voice stops, 10 kHz = data starts." The jump from 8 to 10 is one step up on the list of choices, just as data transmission is one step beyond voice - remember "data needs a little more."

Topics

#Data transmission standards#Frequency/bandwidth requirements#System design specifications#Building infrastructure

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