Introducing Cisco Data Center Networking (DCICN, legacy) — Question 24

What is the wire transmission speed for 100GBASE-ER4 Ethernet?

Answer options

• A. 100 Mb/s
• B. 1 Gb/s
• C. 10 Gb/s
• D. 100 Gb/s

Correct answer: D

Explanation

The correct answer is D, as 100GBASE-ER4 Ethernet operates at a transmission speed of 100 Gb/s. The other options represent lower speeds that do not apply to this specific Ethernet standard.