Which of the following bytes can be used for ordenwire calls between two REG devices?

SES: There are 5% or more of the False blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) in one second.

Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?

On OSN Series transmission devices, ethernet ports cannot access tagged and untagged frames at the same time

STM-64 has an () AU pointer.

Which of the following is the difference between an AU pointer and a TU pointer? (Multiple choice).

The difference between dispersion compensation fibers and ordinary optical fibers is that the dispersion compensation fibers have a negative dispersion coefficient at ().

If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed

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.

Which of the following alerts does not trigger an AU-AIS alert?

The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.

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.

What are the basic features of the U2000? Multiple Choices

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.

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 is the feature of TCM overhead in ODUk signals?

Both PDH and SDH have globally harmonized standards.

The standard Ethernet frame length should not be less than 64 bytes Which of the following factors contribute to this limitation? (Multiple choice).

When a bit False is detected in B2 bytes, which of the following alarms is reported by the peer?

Which of the following is the default WTR time for MSP switching?

Which of the following statements about the U2000 license is incorrect?

The interval between two adjacent pointer alignment events is at least () frames.

The last 256 columns in the OTN frame structure are the FEC regions for forward False correction.

Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?

When using a script to back up U2000 data, the backup speed is fast because the backup file is small.

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.

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.

Manual configuration will clear the data on the NE side

The device IP address of the gateway element and the non-gateway element must be set in the same network segment.

After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.

Which of the following bytes can be used for wired phones between two REG devices?

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.

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.

Which of the following are device-level protection schemes for SDH products? (Multiple choice).

The segment overhead of STM-4 is () bytes/frame.

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.

RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.

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 statements regarding the protection of the cross-connecting plate 1+1 is correct? (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?

Which of the following are communication quality alerts? (Multiple choice).

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).

On the NMS system, the network element performance monitoring time is set to () minutes and () hours.

Which of the following light sources has the best dispersion tolerance and stability?

Which of the following is not the advantage of WDM?

The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.

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 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 is the meaning of "L" in the optical module parameter "L-64.2"

The rate of STM-1 is ()bit/s.

Which of the following statements regarding multiplexing partial remote False indication (MS-REI) is correct?

(1) B2 bytes indicate the transmission channel.

(2) The M1 byte represents the transmission channel

(3) THE MS-REl is sent from the receiver to the source.

(4) MS-REI is transmitted from the source to the receiver.

(5) Indicates the number of bit Falses detected by the receiver after receiving the MS signal.

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.

OTM nr.m consists of up to n " multiplexed channels and does not support non-channel-related overhead. The letter "r" indicates a decrease in functionality.

Which of the following statements about the EFS4 board are correct? (Multiple choice).

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?

Which of the following statements about basic LCAS functionality are correct? (Multiple choice).