In the system control unit, which of the following databases does not lose data after a power failure? (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).
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 case of SNCP, the board selectively receives the service. Therefore, SNCP can protect services on the line.
When the low-level resources of the device are insufficient, which of the following measures can be taken? (Multiple choice).
During service configuration, which of the following service levels cannot be selected?
Optical module parameter "L-64.2" in the "2" indicates which of the following working windows?
Hitless protection switching (HPS) provides the dual fed and selective receiving function for fiber differential protection services and aligns the end-to-end latencies of the working and protection paths, improving service reliability.
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.
Which of the following clock operating modes supports the ITU-T G.781 standard? (Multiple choice).
