Which of the following types of optical fibers has the zero-dispersion feature at 1310 nm?
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
Measure the False correction capability of fec with encoded gain. Which of the following statements about the coding gain is incorrect?
Which of the following bytes can be used for ordenwire calls between two REG devices?
QinQ technology can be used when multiple users need to share the same VCTRUNK and use the same VLAN ID.
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.
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 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 logical function modules is used to generate exhaust R-LOS alerts?
In the system control unit, which of the following databases does not lose data after a power failure? (Multiple choice).
Which of the following statements about the EFS4 board are correct? (Multiple choice).
RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.
Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).
Which of the following are the components of a WDM system multiplexing N wavelengths?
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 modulation technologies has the best performance in terms of wavelength stability?
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 number of bit False blocks on each VC4 channel is detected by B3 on the receiving side. At the same time, the information is sent back to the sender via Q, and HP-REI and HP-FEBBE report on the sender.
When performing fiber cut-off test on an ordinary MSP ring, which of the following alarms will be reported? (Multiple choice).
When the bridge uses IVL learning mode, an entry in the MAC address table is created based on the source MAC address and source port of the teach frame. This entry applies to all VLANs
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.
Which of the following is the basic requirement of the DWDM system in the light source?
Which of the following are device-level protection schemes for SDH products? (Multiple choice).
Some SNCP protection inversion conditions are default, such as AU-AIS and TU-AIS. Other conditions are optional, such as HP-TIM and HP-SLM. Optional conditions can be flexibly set according to the level of the costume.
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).
Which of the following is affected by changing the element ID of OSN3500 on NMS?
Which of the following bytes can be used for wired phones between two REG devices?
What of the following operations may interrupt the network element service? (Multiple choice).
The difference between dispersion compensation fibers and ordinary optical fibers is that the dispersion compensation fibers have a negative dispersion coefficient at ().
When configuring 1+1 optical line protection, you can select RI1/TO1 or RI2/T02 as the working channel according to the actual situation.
When using a script to back up and restore network configuration data for the U2000, you can change the directory where the export file is saved.
Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?
When the sender detects that the b6-b8 of the K2 byte is 110, it means that the sender has reported an alarm ().
During service configuration, which of the following service levels cannot be selected?
SDH is a complete standard digital signal hierarchy that provides____, multiplexing, and cross-connection. (Enter only lowercase letters.)
Which of the following is the configuration mode for the new NE?( Multiple choices).
Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.
In a WDM system, when the number of wavelengths is greater than ( ), the arrayed waveguide grating (AWG) is recommended.
Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.
When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?
WDM transmits optical signals multiplexed at multiple rates (wavelengths) through a single optical fiber, and the digital signals carried by these optical signals must have the same rate and data format
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 meaning of "L" in the optical module parameter "L-64.2"
According to the formula "ODUk rate = 239/(239k) x STMN frame rate", ODU4 The rate is equal to 239/235× STMN frame rate.
When the fiber between node A and node B is disconnected, the RU on node B detects OTS_LOS alarm and will OTS_BDI The ru of the alert inserted into node A of node A forces reports OTS BDI alarms. The board reports och_SSF alarm on the downstream C node.
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
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?
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.
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.
Establish Ethernet leased line service between HI (HQ) and H2 (branch) of enterprise H, and bind 5 in the corresponding VCTRUNK VC-12. When a VC-12 fails, the Ethernet dedicated line between H1 and H2 is interrupted. So, which of the following statements is true?
Which of the following are the service board types for MSTP devices? (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.)
After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.
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?
On a Layer 2 switching device, if the Ethernet port is an Access port, the port can only receive Ethernet frames without a VLAN tag or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.
DumpsMate's team of experts is always available to respond your queries on exam preparation. Get professional answers on any topic of the certification syllabus. Our experts will thoroughly satisfy you.
TESTED 03 Oct 2025
