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The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.
QinQ technology can be used when multiple users need to share the same VCTRUNK and use the same VLAN ID.
Which of the following can be configured as the monitoring time for network element performance events?
When the working PQ1 board is oversized, the device will perform and the TFS protection will be reversed. Which of the following statements about the switching process are correct? (Multiple choice).
The interval between two adjacent pointer alignment events is at least () frames.
LCK insertion takes precedence over AIS insertion. That is, if the user configures LCK insertion and the conditions for automatic AS insertion are met, the LCK is inserted.
Subnetwork connection protection (SNCP) requires the APS protocol.
Array waveguide grating (AWG) multiplexer/multiplexer has the following advantages: short wavelength spacing, large number of channels and flat passband. Suitable for DWDM systems in ultra-high speed, large tubes.
Which of the following is the basic requirement of the DWDM system in the light source?
Which of the following statements about basic LCAS functionality are correct? (Multiple choice).
Which of the following is not a basic component of a WDM system?
Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in 1:1 mode of the LMSP.
Are the following statements regarding the definition of SDH correct?
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
After a user adjusts service bandwidth, the NCE Controller delivers the new bandwidth to devices and adjusts the CIR and PIR of the service PW. During the adjustment, services are not interrupted.
Which of the following is not a condition that triggers multiplexed segment protection (MSP)?
Which of the following communication protocols are used for DCN management of Huawei devices? (Multiple choice).
OChr means the use of electrical monitoring technology.
When setting up LCAS mode, follow these principles:
1. If both ends of the device are Huawei devices, please set it to "Standard Mode".
2. If a Huawei device is interconnected with a third-party device, set the interconnect device to the same mode according to the mode supported by the third-party device.
After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent. Which of the following Is the main cause?
Which of the following statements about the advantages of OTN are incorrect?
Self-healing refers to the capability of a network to automatically recover its services within a short period from a fault without any manual intervention. Users are unaware of the network fault. A network with this self-healing capability is a self-healing network.
When ODUk 5NCP is configured, common WDM services can be converted into SNCP services, but SNCP services cannot be converted into common WDM services.
In the colored scenario, the TM20fTD20 board can be used to add/drop wavelengths.
What are the basic features of the U2000? Multiple Choices
Which of the following statements about an Ethernet switch is incorrect?
Which of the following logic function blocks are involved in processing clock signals? (Multiple choice).
Which of the following are communication quality alerts? (Multiple choice).
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)
According to ITU-T's recommendations, the requirement that the MSP switching time should be within 50ms is conditional. For example, the number of net elements on the entire ring network is less than 16.
NCE software is deployed in B/5 (browser/server) mode.
There are 48 bits in MAC address. The first ( ) bits make up a unique identifier for the vendor and the last ( ) bits are allocated by the vendor
Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.
When the low-level resources of the device are insufficient, which of the following measures can be taken? (Multiple choice).
For the devices that support multiple transmission rates and working modes, the____mechanism can be used to determine the optimal communication mode between two connected
devices. (Enter only lowercase letters.)
The working and protection ports of a linear MSP group must be on the same board.
Which of the following clock operating modes supports the ITU-T G.781 standard? (Multiple choice).
The difference between dispersion compensation fibers and ordinary optical fibers is that the dispersion compensation fibers have a negative dispersion coefficient at ().
Which of the following is the configuration mode for the new NE?( Multiple choices).
QinQ technology can be used when multiple users need to share the same VCTRUK and use the same VLAN ID.
Single fiber unidirectional transmission provides higher bandwidth than single-fiber bidirectional transmission.
Which of the following is not the northbound interface provided by the U2000?
Which of the following statements about extending the ECC is incorrect?
Optical module parameter "L-64.2" in "2" indicates which of the following working windows?
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.
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?
MSP is a network-level protection scheme. MSF does not directly protect services, and MSP switching and recovery are not affected even if there is no service on the MSP ring.
Which of the following can be used as the central wavelength of the pump source in EDFA? (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 UITL board multiplexes and demultiplexes signals with a 50 GHz spacing and signals with a 100 GHz spacing.
In WDM systems, it is ideal to use a dielectric thin problem filter (TFF) when using less than () wavelengths.
In WDM systems, it is ideal to use a dielectric thin film filter (TFF) when using less than () wavelengths.
Manual configuration will clear the data on the NE side
Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?
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 OPC board is an optical-layer platform board that must work with pluggable modules.
The SP3D board supports 63 E1 services
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
Which of the following is the electrical layer cost of OTN? (Multiple choice).
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and weight and usage information of the clock source?
The optical amplifier unit compensates for line losses and extends the transmission distance. Connecting multiple optical amplifier units in cascaded mode allows for extended transmission distances without following the system.
Which of the following is the main networking type of a transmission network?
PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.
When a bit False is detected in B2 bytes, which of the following alarms is reported by the peer?
During service configuration, which of the following service levels cannot be selected?
Which of the following sites support service adding/dropping?
The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.
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.
Fiber loss includes bending loss, absorption loss and scattering loss.
The clock unit can only access the external clock source as the timing signal source of the system through the external clock interface. In addition; It can also output a processed clock and provide a clock source for other devices that need timing.
Which of the following light sources has the best dispersion tolerance and stability?
Which of the following is the feature of TCM overhead in ODUk signals?
When configuring VLAN-based service types, which of the following features must be enabled on the port?