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.
OChr means the use of electrical monitoring technology.
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 is not a basic component of a WDM system?
STM-64 has an () AU pointer.
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.
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
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).
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.)
Subnetwork connection protection (SNCP) requires the APS protocol.
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.
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.)
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?
Configuring the EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring network, the STP protocol must be enabled on the network to prevent broadcast storms.
The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.
The Raman amplifer uses which of the following effects?
Which of the following statements about extending the ECC is incorrect?
Which of the following is the VLAN classification method? (Multiple choice).
An unprotected chain consists of four net elements; ME1, NE2, NE3 and NE4.
Create an end-to-end VC4 path NE1-NE4 and add NE5 between NE2 and NE3 for capacity expansion.
The original configuration remains unchanged and no services are configured on the NE5.
In this case, the unprotected chain becomes NE1-NE2-NE5NE3-NE4, how many VC4 paths can be searched?
Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.
In the system control unit, which of the following databases does not lose data after a power failure? (Multiple choice).
What of the following operations may interrupt the network element service? (Multiple choice).
U2000 can flexibly interconnect with different third-party network administrators through the Northbound Interface (NBI) and provide physical inventory and alarm information for the upper-layer network management.
What are the basic features of the U2000? Multiple Choices
Which of the following is not an EVPLAN feature?
When using a script to back up U2000 data, the backup speed is fast because the backup file is small.
Which of the following are the main advantages of SDH?
When performing fiber cut-off test on an ordinary MSP ring, which of the following alarms will be reported? (Multiple choice).
Which of the following is not a non-linear effect?
Which of the following is not the northbound interface provided by the U2000?
Which of the following are communication quality alerts? (Multiple choice).
The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.
Which of the following statements about the EFS4 board are correct? (Multiple choice).
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.
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).
Which of the following statements about the MSP ring is correct? (Multiple choice).
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).
The nominal rate of OTU4 signals is 111,809,973.568 kbit/s. Generally, the line rate is 112 Gbit/s.
Which of the following statements about the MD02 board is incorrect?
You can view the NE license status and replace the license that is about to expire in a timely manner to prevent the impact of license expiration on services.
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?
QinQ technology can be used when multiple users need to share the same VCTRUNK and use the same VLAN ID.
The OTN signal has a fixed pad period, the same frame period as the SDH signal.
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?
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?
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.
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.
Which of the following alerts does not trigger an AU-AIS alert?
Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?
When using the LCAS function, which of the following overhead bytes is used to transmit control information? (Multiple Choices)
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 communication protocols are used for DCN management of Huawei devices? (Multiple choice).
Which of the following is the configuration mode for the new NE?( Multiple choices).
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 the OTN standard system, which of the following protocols defines optical transport network interfaces?
Manual configuration will clear the data on the NE side
Which of the following is not the advantage of WDM?
Which of the following is not a condition that triggers multiplexed segment protection (MSP)?
Which of the following is the main networking type of a transmission network?
Which of the following bytes can be used for ordenwire calls between two REG devices?
The OTUCn signal rate does not include the FEC overhead area.
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.
Which of the following are the components of a WDM system multiplexing N wavelengths?
The interval between two adjacent pointer alignment events is at least () 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 a bit False is detected in B2 bytes, which of the following alarms is reported by the peer?
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and weight and usage information of the clock source?
Which of the following are device-level protection schemes for SDH products? (Multiple choice).
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 about signal label byte C2 are incorrect?
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 are the components of the WDM system summer with N glass lengths? (Multiple choice).