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Free H35-260 Exam Braindumps
HCSA-Field-Transmission & PTN V1.0 Questions 156–160 (page: 33)

Updated On: 9-Feb-2026
Page 33 of 69
PDF with 338 Questions

Which of the following statements about 100G coherent PDM-QPSK modulation is incorrect?

  1. The essence of QPSK modulation is to reduce the baud rate of the optical signal by half without reducing the line rate by selecting 4 possible values in the phase of the optical field.
  2. PDM-QPSK technology is the main modulation code technology for 100G transmission, which can reduce the line rate of 112Gb/s to the baud rate of 28Gbaud/s, greatly reducing the loan requirements for (optical)
    electrical devices.
  3. PDM polarization multiplexing technology is adopted, which has better nonlinear tolerance than 40GePDM-BPSK.
  4. PDC-QPSK supports DCMfree and DCM system applications, and supports smooth upgrade from existing 10G/40G network to 100G system.

Answer(s): C



Which of the following statements about 802.1Q is wrong?

  1. The TPID value in the 802.1Q Ethernet frame structure is 8100
  2. In theory, the value range of VLAN ID is 0-4095
  3. There are only 4 VLAN priorities in the 802.1Q Ethernet frame structure
  4. 802.1Q Ethernet frames are 4 bytes longer than normal Ethernet frames

Answer(s): C



Which of the following statements about the advantages of QinQ is correct?

  1. Solve the problem of increasingly scarce public network VLAN ID resources
  2. Users can plan their own private network VLAN ID
  3. Provide a simpler L3VPN solution
  4. Make the user network more independent

Answer(s): A,B,D



Which of the following statements about the slave subrack SCC function is correct?

  1. Status management of boards from subracks
  2. DCN message forwarding
  3. Protection switching protocol processing of this subrack
  4. Handling of Overhead

Answer(s): A,B,D



Which of the following statements about optical line protection OLP is wrong?

  1. The OLP board is used to protect the powder fiber
  2. Segmentation protects the combined optical signal, and separate routing is used between sites
  3. Single-ended switching optical line protection requires APS protocol
  4. oLpz can only be fitted on the RU line side of each site

Answer(s): C,D



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