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TESTED 15 Sep 2025
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The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.
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)
Which of the following is the difference between an AU pointer and a TU pointer? (Multiple choice).
Hitless protection switching (HPS) provides the dual fed and selective receiving function for fiber differential protection services and aligns the end-to-end latencies of the working and protection paths, improving service reliability.
RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.
According to the formula "ODUk rate = 239/(239k) x STMN frame rate", ODU4 The rate is equal to 239/235× STMN frame rate.
In WDM systems, it is ideal to use a dielectric thin problem filter (TFF) when using less than () wavelengths.
If the overhead bytes pass through two plugged backplane buses, then the two slots are called paired slots that enable automatic transparent transfer of overhead bytes, such as (), () and (). Even if the SCC on the local network element The board is offline, which can also improve msP switching performance and protect DCC communication with other network elements. (Multi-quality selection).
TU-AIS is often encountered during network maintenance. Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).
The receiver performs a BIP-8 check on unscrambled STM-16 frames. If the BIP8 check result XOR·∶, the value of the B1 byte contained in the next STM16 ring is 10001100, which indicates STM-16 There is a () bit False block in the axis.
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.
Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?
A standard Ethernet frame should not be shorter than 64 bytes, which is determined by the____and the collision detection used. (Enter only lowercase letters.)
The standard Ethernet frame length should not be less than 64 bytes Which of the following factors contribute to this limitation? (Multiple choice).
Two PIU or APIU boards of an OpCXtrans E6616/OptiX OSN 1800V Pro are used to supply power for the system In hot backup mode. When either of the two PIU or APIU boards is faulty, the system can still function properly.
After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.
A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.
Optical module parameter "L-64.2" in "2" indicates which of the following working windows?
Which of the following is the meaning of "L" in the optical module parameter "L-64.2"
Which of the following is affected by changing the element ID of OSN3500 on NMS?
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?
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.
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.
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
Which of the following is the main networking type of a transmission network?
When configuring 1+1 optical line protection, you can select RI1/TO1 or RI2/T02 as the working channel according to the actual situation.
An unprotected chain consists of four net elements; ME1, NE2, NE3 and NE4.
Create an end-to-end VC4 path NE1-NE4 and add NE5 between NE2 and NE3 for capacity expansion.
The original configuration remains unchanged and no services are configured on the NE5.
In this case, the unprotected chain becomes NE1-NE2-NE5NE3-NE4, how many VC4 paths can be searched?
When the sender detects that the b6-b8 of the K2 byte is 110, it means that the sender has reported an alarm ().
Configuring the EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring network, the STP protocol must be enabled on the network to prevent broadcast storms.
Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.
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?
The refractive index n1 of the fiber core must be the Q of the cladding refractive Mo n2, which is a necessary condition for transmitting the optical signal in the optical fiber.
Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).
The UITL board multiplexes and demultiplexes signals with a 50 GHz spacing and signals with a 100 GHz spacing.
EPL services use ports and bandwidth exclusively, and different users may need to share resources. Which of the following methods can be used to isolate user data?
Which of the following communication protocols are used for DCN management of Huawei devices? (Multiple choice).
The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.
U2000 can flexibly interconnect with different third-party network administrators through the Northbound Interface (NBI) and provide physical inventory and alarm information for the upper-layer network management.
Which of the following layers define the protocols that control the network layer? The protocol for this layer applies to logical links, i.e. end-to-end connectivity between two devices.
Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.
NE A and NE B are adjacent NE
If B3 and low-order Falses occur in the A->B direction, and B1, B2, B3, and low-order Falses occur in the B->A direction, it is caused by Which of the following performance events does NEA report? (Multiple choice).
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.
When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?
Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice).
What of the following operations may interrupt the network element service? (Multiple choice).
When the J1 byte does not match, an alarm () is reported and the service may be interrupted.
When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?
Which of the following device domains can be managed by U2000? (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 TNG1N401 board supports hybrid transmission of multiple ODUk granularities.
Single fiber unidirectional transmission provides higher bandwidth than single-fiber bidirectional transmission.
The OPC board is an optical-layer platform board that must work with pluggable modules.
Which of the following is the maximum number of OSN3500 sub-racks that can be installed in a 2.2-meter cabinet?
Which of the following types of optical fibers has the zero-dispersion feature at 1310 nm?
The rate of SF64 and SL64 boards is STM54. Therefore, the two plates can be interconnected.
TESTED 15 Sep 2025