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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.
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.
Which of the following is not a condition that triggers multiplexed segment protection (MSP)?
If a network port that supports autonegotiation is connected to a network port that does not support autonegotiation, you can interconnect in both half-duplex and full-duplex modes.
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 is the difference between an AU pointer and a TU pointer? (Multiple choice).
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
When configuring VLAN-based service types, which of the following features must be enabled on the port?
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.)
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 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 clock operating modes supports the ITU-T G.781 standard? (Multiple choice).
The interval between two adjacent pointer alignment events is at least () frames.
When the SNCP ring consisting of four Optis OSN 2500 devices has a rate of 25 Gbt/s, the network's service answer stars can carry up to ()2Mt/s Signal.
Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice).
Which of the following statements about basic LCAS functionality are correct? (Multiple choice).
If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed
SDH is a complete standard digital signal hierarchy that provides____, multiplexing, and cross-connection. (Enter only lowercase letters.)
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.
RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.
Which of the following is affected by changing the element ID of OSN3500 on NMS?
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.
When the number of block errors detected by the B2 byte received at the recerve end is returned to the transmit end through the Ml byte, which of the following alarms or performance events are reported at the transmit end?
SDH signals must be scrambled before they can be transmitted over optical fibers. Which of the following bytes is not scrambled? (Multiple choice).
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.
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 is the configuration mode for the new NE?( Multiple choices).
The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.
Optical module parameter "L-64.2" in the "2" indicates which of the following working windows?
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.
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
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 different types of ESC are divided according to the principles of implementation? (Multiple choice)
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.
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?
output networks require higher costs than belt networks, but provide a more reliable management channel.
Which of the following are the service board types for MSTP devices? (Multiple choice).
In the system control unit, which of the following databases does not lose data after a power failure? (Multiple choice).
The1310nm and 1550nm transmission windows are low loss windows. In DWDM systems, only the 1560m transfer window is used. Which of the following is the main cause?
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
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
Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.
The TNG1N401 board supports hybrid transmission of multiple ODUk granularities.
Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?
Which of the following is the basic requirement of the DWDM system in the light source?
According to the formula "ODUk rate = 239/(239k) x STM-N frame rate", ODU4 The rate is equal to the 239/235xSTM-N Pa rate.
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.
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.
During service configuration, which of the following service levels cannot be selected?
Suppose 2 VC-12 time slots need to be bound to the VCTRUNK1 of the N2EFS4 board. When there are 8 VC4 slots on the N2EFS4 board, which of the following slots meets the requirements?
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.
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?
TESTED 29 Oct 2025
