N10-005 · Question #454
Which of the following WAN technologies utilizes an optical SONET carrier and has a maximum bandwidth of 155.54Mbps?
The correct answer is C. OC3. OC (Optical Carrier) designations are used with SONET (Synchronous Optical Network) fiber-optic WAN technology. OC3 runs at approximately 155.52 Mbps (≈155.54 Mbps). The OC level multiplies the base OC1 rate of 51.84 Mbps, so OC3 = 3 × 51.84 = 155.52 Mbps. For comparison…
Question
Which of the following WAN technologies utilizes an optical SONET carrier and has a maximum bandwidth of 155.54Mbps?
Options
- ADS3
- BE3
- COC3
- DT3
How the community answered
(25 responses)- A4% (1)
- B4% (1)
- C92% (23)
Explanation
OC (Optical Carrier) designations are used with SONET (Synchronous Optical Network) fiber-optic WAN technology. OC3 runs at approximately 155.52 Mbps (≈155.54 Mbps). The OC level multiplies the base OC1 rate of 51.84 Mbps, so OC3 = 3 × 51.84 = 155.52 Mbps. For comparison: T3/DS3 = 44.736 Mbps (copper/coaxial, not SONET); E3 = 34.368 Mbps (European standard, not SONET). Higher OC levels include OC12 (622 Mbps), OC48 (2.4 Gbps), and OC192 (9.6 Gbps). Only OC3 matches both the SONET/optical criteria and the 155 Mbps bandwidth.
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