When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?
An optical amplifier unit compensates for line loss and extends transmission distance. Connecting multiple optical amplifier units in cascading mode can infinitely extend transmission distance of a system.
An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted. Therefore, which of the following statements is correct?
When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.
The number of 0DU2e signals multiplexed into an 0DU3 signal is the same as that of 0DU2 signals multiplexed into an 0DU3 signal.
Which of the following alarm/event dumping modes are supported by the U2000? (Multiple Choice)
RSOH, MSOH, HPOH, and LPOH implement monitoring functions in the descending order of monitoring scope.
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
Which of the following are the device-level protection schemes of SDH products? (Multiple Choice)
In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.
During the service configuration between two adjacent sites (NE1 and NE2), if VC4:1 and VC12:l-3 are used on the NEl's line board connected to NE2, the same VC4 and VC12 timeslots must be used on the NE2's line board connected to NE1.
Which of the following are the differences between AU pointer and TU pointer? (Multiple Choice)
When a VLAN-based service type is configured, which of the following functions must be enabled on the port?
Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.
In the case of 1+1 linear MSP, which of the following switching modes do not require the enabling of the APS protection protocol? (Multiple Choice)
The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through ( ), and HP-REI and HP-FEBBE are reported at the transmit end.
The last 256 columns in the OTN frame structure are FEC areas, which are used for forward error correction.
Which of the following working windows is indicated by "2" in the optical module parameter L-64.2"?
Which of the following layers defines the protocols that control the network layer? The protocols of the layer work on logical links, that is end-to-end connections between two devices.
WDM multiplexes the optical signals at multiple rates (wavelengths) over one fiber for transmission. The digital signals carried by these optical signals must have the same rate and data format.
The TAG attribute cannot be set for the internal port VCTRUNK of the board on the NMS.
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TESTED 24 Nov 2024
