010-151 · Question #93
Which two transceivers can support 100 Gigabit Ethernet? (Choose two.)
The correct answer is C. QSFP+ D. QSFP28. QSFP+ and QSFP28 are both transceiver form factors that can support 100 Gigabit Ethernet by using four parallel 25G lanes.
Question
Which two transceivers can support 100 Gigabit Ethernet? (Choose two.)
Options
- ASFP+
- BSFP28
- CQSFP+
- DQSFP28
- ESFP-DD
How the community answered
(45 responses)- A4% (2)
- B9% (4)
- C84% (38)
- E2% (1)
Why each option
QSFP+ and QSFP28 are both transceiver form factors that can support 100 Gigabit Ethernet by using four parallel 25G lanes.
SFP+ is limited to a maximum of 10 Gigabit Ethernet per port and cannot achieve 100GbE speeds.
SFP28 supports a single 25G lane, providing 25 Gigabit Ethernet throughput per port, which is far below 100GbE.
QSFP+ supports 100GbE by aggregating four 25G lanes (4x25G) to achieve 100G total throughput, and is compatible with 100G applications in many switch platform implementations.
QSFP28 is the primary industry-standard transceiver for native 100GbE, using four 28G-capable lanes running at 25G NRZ each to deliver 100 Gigabit Ethernet in a compact, hot-swappable module.
SFP-DD uses two electrical lanes for up to 100G but is not one of the established primary transceiver standards designated for 100GbE in the context of this topic.
Concept tested: 100GbE transceiver form factors QSFP+ and QSFP28
Source: https://www.cisco.com/c/en/us/products/interfaces-modules/100-gigabit-modules/index.html
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