The total downlink bandwidth of the 10G EPON PONI port is the sum of the EPON downlink bandwidth and the 10GEPON downlink bandwidth.
A . Ture
B . False
Answer: A
A total of 100 multicast users on the OLT are watching 20 multicast programs. If each multicast program occupies a bandwidth of 2M, how much multicast traffic does the OLT uplink port currently have?
A total of 100 multicast users on the OLT are watching 20 multicast programs. If each multicast program occupies a bandwidth of 2M, how much multicast traffic does the OLT uplink port currently have?
A . 200M
B . 100M
C . 40M
D . 50M
Answer: C
When the backbone fiber is broken or the OLT cannot detect the expected optical signal (LOS) alarm, the possible cause is: (Multiple Choice)
When the backbone fiber is broken or the OLT cannot detect the expected optical signal (LOS) alarm, the possible cause is: (Multiple Choice)
A . There is a rogue ON U under the port
B . Port backbone fiber failure
C . All power off or failures under the port
D . The port laser is turned off
Answer: BCD
A GPON Type C dual-homing protection is deployed for a power access service, and the status of the protection group and the uplink Ethernet port is set on the OLT. When the status of the Ethernet port associated with the protection group on the OLT becomes down, which of the following description is incorrect?
A GPON Type C dual-homing protection is deployed for a power access service, and the status of the protection group and the uplink Ethernet port is set on the OLT. When the status of the Ethernet port associated with the protection group on the OLT becomes down, which of the following description is incorrect?
A . The status of the work port on the ONU side becomes standby
B . OLT general ONU uplink status changes
C . After the switch, the service on the ONU is sent to the OLT through the protect port, that is, the service message is transmitted on the protect link.
D . ONU detects link failure and triggers protection switching
Answer: D
When configuring the multicast service on the MA5600T/MA5680T, the multicast vlan program adopts the static configuration method. Which of the following options must be configured, otherwise the multicast program may not be watched?
When configuring the multicast service on the MA5600T/MA5680T, the multicast vlan program adopts the static configuration method. Which of the following options must be configured, otherwise the multicast program may not be watched?
A . igmp profile
B . igmp program
C . igmp priority
D . igmp preview
Answer: B
What is the downlink wavelength in the 10GGPON system?
What is the downlink wavelength in the 10GGPON system?
A . 1310nm
B . 1577nm
C . 1270mm
D . 1490nm
Answer: B
When the invitation message sent by user A reaches user B after passing through servers C, D, and E, the server address recorded in the VIA field in the message received by user B from top to bottom is:
When the invitation message sent by user A reaches user B after passing through servers C, D, and E, the server address recorded in the VIA field in the message received by user B from top to bottom is:
A . C->D->E
B . E->C->D
C . E->D->C
D . C->E->D
Answer: C
Enable IGMP-snooping on the layer 2. When the switch port receives an IGMP join message, it monitors the message and adds the corresponding port to the multicast group.
Enable IGMP-snooping on the layer 2. When the switch port receives an IGMP join message, it monitors the message and adds the corresponding port to the multicast group.
A . Ture
B . False
Answer: A
The complete SIP message interaction process will include multiple request and response messages. A field can be used in the header field of the SIP message to describe the specific request corresponding to the current response message. This field is:
The complete SIP message interaction process will include multiple request and response messages. A field can be used in the header field of the SIP message to describe the specific request corresponding to the current response message. This field is:
A . Csea
B . CaLL-ID
C . First line
D . Message body
Answer: A
Multicast technology effectively solves the problem of single-point sending and multi-point receiving, and realizes efficient point-to-multipoint data transmission in the IP network.
Multicast technology effectively solves the problem of single-point sending and multi-point receiving, and realizes efficient point-to-multipoint data transmission in the IP network.
A . Ture
B . False
Answer: A