H31-311 HCIA-Transmission V2.0 Questions and Answers

Which of the following statements about OTN advantages is incorrect?

The interval between two adjacent pointer justification events is at least ( ) frames.

The receive end performs BIP-8 check for the unscrambled STM-16 frame. If the BIP-8 check result XOR the value of the B1 byte contained in the following STM-16 frame is 10001100, it indicates that () bit error blocks exist in the STM-16 frame.

In the system control unit, which of the following databases do not lose data after a power failure?

After PDH services are configured on a per-NE basis, a complete trail cannot be searched out. Which of the following are possible causes? (Multiple Choice)

Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.

Which of the following is the frame structure of STM-16?

When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.

The number of 0DU2e signals multiplexed into an 0DU3 signal is the same as that of 0DU2 signals multiplexed into an 0DU3 signal.

Which of the following is the maximum number of OSN 3500 subracks that can be installed in a 2.2 m cabinet?

The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through ( ), and HP-REI and HP-FEBBE are reported at the transmit end.

Frame-Mapped GFP (GFP-F) is a processing mode oriented to data coding blocks (such as Fiber Channel and ESCON).

Which of the following is the functional unit that provides the interfaces related to the orderwire phone and serial data for the system?

After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.

Optical supervisory channels are intended for the supervisory of WDM optical transmission systems. In ITU-T recommendations, 1510 nm wavelengths at a ( ) rate are preferentially used.

When the rate of an SNCP ring consisting of four OptiX OSN 2500 devices is 2.5 Gbit/s, the service capacity of this network can carry a maximum number of ( ) 2 Mbit/s signals.

Which of the following are optical-layer trails? (Multiple Choice)

When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.

The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?

On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time,

Which of following are the configuration modes of new NEs? (Multiple Choice)

On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.

Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)

When a working PQ1 board is faulty, the device performs TPS protection switching. Which of the following statements about the switching process are correct? (Multiple Choice)