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Huawei HCIA-Transmission V2.5 Sample Questions:

1. Which of the following media types has a transmission distance of no more than 1 km?

A) 1000BaseLX
B) 10GBASE-ER
C) 10GBASE-LR
D) 10GBASE-SR

2. Which of the following elements does a data communication network have in terms of equipment?
(Multiple choice)

A) Transmission System
B) Core equipment
C) Switching equipment
D) End Device

3. Which of the following descriptions about overhead bytes is wrong?

A) A1, A2: Framing bytes, which correctly select and separate individual STM-1 frames in the received signal stream.
B) E1, E2: Business contact bytes, providing business contact voice channels.
C) OJO: Regeneration segment trace byte, used to repeatedly send the segment access point identifier so that the receiving end can confirm that it is in a continuous connection with the specified sending end.
D) B1: Bit interleaved parity 8-bit code BIP-8, used for regeneration section layer error monitoring.

4. Which of the following is not an advantage of using QinQ technology?

A) Solve the packet transmission delay problem
B) Solve the problem of increasingly scarce public network VLAN ID resources
C) Provide a simpler Layer 2 VPN solution
D) Different services can be distinguished by different levels of VLAN ID:

5. Which of the following is not an advantage of EDFA?

A) High energy conversion efficiency
B) Gain stability
C) Gain Flatness
D) High coupling efficiency

Solutions: