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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) □
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 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.
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 statements about the EFS4 board are correct? (Multiple choice).
EPL services use bandwidth exclusively on the line, which is very safe. Dedicated line applications for VIP customers
Which of the following logical function modules is used to generate exhaust R-LOS alerts?
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?
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.
During service configuration, there are two time slot modes. Huawei uses interleaved time slot mode by default.
The OTN signal has a fixed pad period, the same frame period as the SDH signal.
The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.
In Recommendation ITU-T G.692, the allowable channel frequencies are based on the reference frequency (), and the channel spacing can be 100 GHz, 50 GHz or 25 GHz.
Which of the following device domains can be managed by U2000? (Multiple choice).
In WDM systems, it is ideal to use a dielectric thin problem filter (TFF) when using less than () wavelengths.
Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice).
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?
RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.
Which of the following are device-level protection schemes for SDH products? (Multiple choice).
Which of the following is the basic requirement of the DWDM system in the light source?
QinQ technology can be used when multiple users need to share the same VCTRUNK and use the same VLAN ID.
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).
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.
Compared with dense wavelength division multiplexing (DWDM) systems, crude glass division multiplexing (CWDM) systems provide a certain amount of glass length and transmission distance within (kmkm), which greatly reduces system cost and has strong flexibility
The receiver performs a BIP-8 check on unscrambled STM-16 frames. If the BIP8 check result XOR·∶, the value of the B1 byte contained in the next STM16 ring is 10001100, which indicates STM-16 There is a () bit False block in the axis.
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 maximum number of OSN3500 sub-racks that can be installed in a 2.2-meter cabinet?
Which of the following alarm/event storage modes does U2000 support? (Multiple choice).
The rate of SF64 and SL64 boards is STM54. Therefore, the two plates can be interconnected.
output networks require higher costs than belt networks, but provide a more reliable management channel.
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?
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 maintenance signals is transmitted from the downstream site to the upstream site of the OTN?
If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed
Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).
PRBS can be used to test that the SDH service is healthy and that the protection reversal function is working.
Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.
When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?
What of the following operations may interrupt the network element service? (Multiple choice).
For osn3500, which of the following boards provides centralized backup capability for the +3.3V power supply of each board in the sub-shelf?
Which of the following bytes in the regenerator part overhead are associated with R-OOF and R-LOF? (Multiple Choices)
Which of the following statements about the MST functional module is 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.
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
TESTED 21 Nov 2024