The rate of SF64 and SL64 boards is STM54. Therefore, the two plates can be interconnected.
When the J1 byte does not match, an alarm () is reported and the service may be interrupted.
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 are communication quality alerts? (Multiple choice).
After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent. Which of the following Is the main cause?
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 is the basic requirement of the DWDM system in the light source?
Which of the following is not the advantage of WDM?
In MSP networking, when the optical fiber is connected between sites, the east light plate of the site is connected to the west light plate of the downstream site, and these stations are connected in turn to form a ring. In this case, the direction from the toko plate of the site to the wine light plate of the downstream station is the direction of the main ring, and the direction of forming the ring is the direction of service.
Which of the following is the VLAN classification method? (Multiple choice).
TESTED 16 Oct 2025