Huawei H35-260 Exam Questions
HCSA-Field-Transmission & PTN V1.0 (Page 2 )

Updated On: 15-Feb-2026

According to the IEEE 802JQ standard, where is the VLAN ID field on the Ethernet?

  1. Before source MAC address and destination MAC address
  2. Between the source MAC address and the destination MAC address
  3. After the source MA dog address and the destination MAC address
  4. not fixed

Answer(s): C



What are the reasons for the R-Los alarm reported on the 0TU board?

  1. The local optical port is not used
  2. The local laser is turned off, resulting in no optical signal input
  3. Broken fiber or line performance degradation
  4. The receiving board at the local end is faulty, and the line receiving fails

Answer(s): A,C,D



Which of the following light source technologies does the 100GOTU board use?

  1. Direct modulation light source
  2. Light source of EA modulation method
  3. MZ modulation light source
  4. Coherent reception modulation mode light source

Answer(s): D



The 802.1Q tag header contains a two-byte TPID. Which of the following is its standard value?

  1. 8100
  2. 8847
  3. 8147
  4. 88A8

Answer(s): A



Both the 1310nm and 1550nm transmission windows are low-loss windows. In the DWDM system, only the 1550nm transmission window is used.
Which of the following options is the main reason?

  1. EDFA operating wavelength flat region includes this window
  2. Small nonlinear effects in the 1550nm wavelength region
  3. 1550nm wavelength region is suitable for long distance transmission
  4. 1550nm window loss is smaller than 1310nm window

Answer(s): A






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