Which of the following WAN technologies has a MAXIMUM speed of 155.52Mbps?

The correct answer is A. OC-3. OC-3 (Optical Carrier level 3) runs at exactly 155.52 Mbps, which is 3× the base OC-1 rate of 51.84 Mbps. These are SONET/SDH fiber optic standards. T3 (DS3) runs at approximately 44.736 Mbps. OC-12 runs at 622.08 Mbps (4× OC-3). E1 is a European standard running at 2.048 Mbps…

Networking concepts

Question

Options

AOC-3
BT3
COC-12
DE1

How the community answered

(26 responses)

A
92% (24)
B
4% (1)
C
4% (1)

Explanation

OC-3 (Optical Carrier level 3) runs at exactly 155.52 Mbps, which is 3× the base OC-1 rate of 51.84 Mbps. These are SONET/SDH fiber optic standards. T3 (DS3) runs at approximately 44.736 Mbps. OC-12 runs at 622.08 Mbps (4× OC-3). E1 is a European standard running at 2.048 Mbps. Memorizing OC levels is a common exam topic: OC-1 = 51.84 Mbps, OC-3 = 155.52 Mbps, OC-12 = 622 Mbps, OC-48 = 2.488 Gbps.

Topics

#WAN technologies#OC-3#SONET#bandwidth

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