H31-311_V2.5 HCIA-Transmission V2.5 Questions and Answers

When a bit False is detected in B2 bytes, which of the following alarms is reported by the peer?

After configuring PDH on a per-net element basis, the full trace cannot be searched. Which of the following is a possible cause? (Multiple choice)

The SP3D board supports 63 E1 services

Which of the following statements about the clock source are incorrect?

When the U2000 is synchronized, the same network metadata as the U2000 is not uploaded to the U2000, and the data that exists on the U200 but does not exist on the network element is deleted.

Which of the following bytes can be used for ordenwire calls between two REG devices?

Both PDH and SDH have globally harmonized standards.

Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).

When the sender detects that the b6-b8 of the K2 byte is 110, it means that the sender has reported an alarm ().

The index is used to folio and delineate the starting position of VC-n in the corresponding AU or TU frame so that the receiving end can correctly remove the corresponding VC from the STM-N The VC and C packages are then separated into separate low-rate signals, such as PDH That is; Low-rate branch signals can be discarded directly from the STM-N signal

SES: There are 5% or more of the False blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) in one second.

In the OSN550, the CXL slot contains a function board that integrates a system control and communication (SCC) unit, a cross-connecting unit, and a clock unit Depending on the functionality and access features provided by the OSN550, there are several types of dashboards

The segment overhead of STM-4 is () bytes/frame.

The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.

RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.

Which of the following is the basic requirement of the DWDM system in the light source?

K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.

Automatic Laser Shutdown (ALS): When no optical signal is received, the ALS function automatically turns off the corresponding optical module. This feature protects field maintenance personnel.

After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.

Which of the following logical function modules is used to generate exhaust R-LOS alerts?

When the low-level resources of the device are insufficient, which of the following measures can be taken? (Multiple choice).

In a 2.5GMSP ring consisting of four MSTP sites, which of the following statements about alarm reports is correct when a protection switchover occurs?

For osn3500, which of the following boards provides centralized backup capability for the +3.3V power supply of each board in the sub-shelf?

Which of the following device domains can be managed by U2000? (Multiple choice).

Which of the following is not an EVPLAN feature?

Are the following statements regarding the definition of SDH correct?

What of the following operations may interrupt the network element service? (Multiple choice).

Which of the following are communication quality alerts? (Multiple choice).

For alignment; Indicates the starting position of VC-n in the corresponding AU or TU frame. • This way: The receiver can correctly remove the corresponding VC from STM-N, and then The VC and C packages are separated into separate low-rate signals, such as PDH, which means that the low-rate path signal can be dropped directly from the STM-N signal.

For (on-premises) HA solutions where active and standby servers are deployed in the same location, which of the following platforms can be deployed? (Multiple choice).

The AAC address consists of 46 bits and is globally unique

Which of the following - is the meaning of the eighth-digit MAC address with 1?

The frame structure of ODU4 is four times that of ODU1

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

Coherent receiver technology uses a local oscillator laser with the same frequency as the received signal to perform coherent processing and recover () information from the received signal. (Multi-quality selection.)

Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?

Which of the following are the service board types for MSTP devices? (Multiple choice).

When configuring LMSP, there are two switching modes: single-ended switching and double-ended switching. Single-ended switching does not require the protection protocol to be enabled.

The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.

The Raman amplifer uses which of the following effects?

Which of the following methods can be used to multiplex low-order ODUK to higher-order ODUk?

In the case of a 1+1 linear MSP, which of the following switching modes does not require the APS protection protocol full (multiple choice) to be enabled

The device IP address of the gateway element and the non-gateway element must be set in the same network segment.

Compared with dense wavelength division multiplexing (DWDM) systems, crude glass division multiplexing (CWDM) systems provide a certain amount of glass length and transmission distance within (kmkm), which greatly reduces system cost and has strong flexibility

Which of the following is the multiplexing method of SDH?

Which of the following is the electrical layer cost of OTN? (Multiple choice).

The standard Ethernet frame length should not be less than 64 bytes Which of the following factors contribute to this limitation? (Multiple choice).

Which of the following ITLI-T recommendations define the OTN frame structure?

output networks require higher costs than belt networks, but provide a more reliable management channel.

During service configuration, which of the following service levels cannot be selected?

For MSPs, you need to set the MSP protocol ID for each NE. To ensure that each ID is unique, it is recommended to set the MSP protocol ID to the value that is compatible with the network element ID.

Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?

In the frame structure of the SDH signal, there are large overhead bytes for operation, management, and maintenance (OAM). Overhead bytes account for all bits () of the entire frame and greatly enhance the monitoring capabilities of the network.

Manual configuration will clear the data on the NE side

Which overhead below 112 is not ODUk overhead?

PRBS can be used to test that the SDH service is healthy and that the protection reversal function is working.

The backplane has two 48V power cords, and each board gets two -48V power supplies from the backplane. After combining the power supply via diodes, the various voltages required for each component are obtained by means of a DC/DC power module and a linear mane swap.