dumpstool logo
Which of the following clock operating modes supports the ITU-T G.781 standard? (Multiple choice).
When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?
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.
For OSN3500, there is a slot mapping relationship between the processing board and the interface pre-processor. The processing board in slot 1 maps to the interface board in slots 19-20.
The device IP address of the gateway element and the non-gateway element must be set in the same network segment.
The last 256 columns in the OTN frame structure are the FEC regions for forward False correction.
Which of the following statements about the advantages of OTN are incorrect?
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.
SDH is a complete standard digital signal hierarchy that provides____, multiplexing, and cross-connection. (Enter only lowercase letters.)
TU-AIS is often encountered during network maintenance. Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).
Which of the following are the components of a WDM system multiplexing N wavelengths?
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.
According to the formula "ODUk rate = 239/(239k) x STMN frame rate", ODU4 The rate is equal to 239/235× STMN frame rate.
In MSP networking, when the optical fiber is connected between sites, the east light plate of the site is connected to the west light plate of the downstream site, and these stations are connected in turn to form a ring. In this case, the direction from the toko plate of the site to the wine light plate of the downstream station is the direction of the main ring, and the direction of forming the ring is the direction of service.
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).
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.
On OSN Series transmission devices, ethernet ports cannot access tagged and untagged frames at the same time
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
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
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 the difference between an AU pointer and a TU pointer? (Multiple choice).
During service configuration, which of the following service levels cannot be selected?
Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is true?
In the OTN standard system, which of the following protocols defines optical transport network interfaces?
Which of the following is the main networking type of a transmission network?
The 1510nm optical monitoring channel can be effectively amplified after passing through EDFA.
The MAC loopback and PHY loopback are used for fault location. When the MAC loopback is set to in loop, the PHY loopback can be set according to the actual situation.
After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.
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 can be used as the central wavelength of the pump source in EDFA? (Multiple choice).
The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.
output networks require higher costs than belt networks, but provide a more reliable management channel.
Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).
Which of the following statements about the EFS4 board are correct? (Multiple choice).
The interval between two adjacent pointer alignment events is at least () frames.
Optical monitoring channel is used for monitoring of WDM optical transmission systems. In the UU-T recommendation, it is preferable to use a 1510 nm wavelength of the a ") rate.
A light wave has two independent and orthogonally polarized modes on the plane perpendicular to the transmission direction, which are generally called X polarization and Y polarization respectively. Using this property of optical signals, the polarization multiplexing separately modulates optical signals on the two orthogonal polarizations.
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
Which of the following statements about signal label byte C2 are incorrect?
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.
Which of the following bytes can be used for ordenwire calls between two REG devices?
Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice) □
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
Which of the following alarm/event storage modes does U2000 support? (Multiple choice).
Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.
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).
QinQ technology can be used when multiple users need to share the same VCTRUK and use the same VLAN ID.
PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.
According to the formula "OTUk rate = 255/(239 - k) x STM-N frame rate", the OTU3 signal rate is 255/236 x STM-N frame rate.
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.
When the ACT indicator of the SDH board is off, it means that the board has a hardware failure and cannot be used.
Which of the following communication protocols are used for DCN management of Huawei devices? (Multiple choice).
During service configuration, there are two time slot modes. Huawei uses interleaved time slot mode by default.
Which of the following ITLI-T recommendations define the OTN frame structure?
PRBS can be used to test that the SDH service is healthy and that the protection reversal function is working.
Which of the following different types of ESC are divided according to the principles of implementation? (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 is the configuration mode for the new NE?( Multiple choices).
Which of the following can be configured as the monitoring time for network element performance events?
The STAT indicator of the SDH board flashes red, lights up for 100ms, and turns off for 100ms. Which of the following means the state of the metric?
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 is the electrical layer cost of OTN? (Multiple choice).
TESTED 17 Sep 2025