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NEW QUESTION # 90
Now NE1 and NE2 form a chain network, and E1 service is configured between NE1 and NE2. One day, the fiber from NE1 to NE2 is interrupted (each segment of the reverse fiber). Which of the following alarms will NE2 report?
- A. AU_AIS
- B. MS_RDI
- C. LP_RDI
- D. HP_LOM
Answer: B
NEW QUESTION # 91
Which of the following descriptions of the electrical layer multiplexing and mapping steps of ODU0 is wrong?
- A. After mapping and multiplexing, the 2 ODU0 signals can be finally multiplexed into 1 OTU1IV signal
- B. After mapping and multiplexing of 8 ODU0 signals, it can be finally used as 1 OTU2V signal
- C. After mapping and multiplexing, 80 channels of ODU0 signals are finally multiplexed into 1 channel of OTU4V signals
- D. After mapping and multiplexing, 34 channels of ODU0 signals can be finally multiplexed into 1 channel of OTU3V signals
Answer: D
NEW QUESTION # 92
The PTN3900 device needs to complete the access and processing of E1 signals through the processing board, service daughter card, and interface board. Which of the following boards is not involved in the work?
- A. CD1
- B. D12/D75
- C. MQ1
- D. MP1
Answer: D
NEW QUESTION # 93
When creating a PTN tunnel, you can set the priority of the tunnel. There are 0, 1, and 7. The larger the value, the higher the priority.
- A. False
- B. True
Answer: A
NEW QUESTION # 94
OSN6800 equipment, ND2, TQX report the BUS_ERROR alarm after configuring the power cross-connect, what are the possible reasons?
- A. Cross bus capacity is limited
- B. The crossover board, TQX board or ND2 board is faulty
- C. The TQX client side business type is set incorrectly
- D. Subrack Hardware Limitations
Answer: A,B,D
NEW QUESTION # 95
In the OSN6800 subrack, when the OTU is inserted in the 17th slot, electrical layer scheduling can be realized
- A. False
- B. True
Answer: A
NEW QUESTION # 96
PTN can support in-band DCN. At this time, the port needs to enable the DCN function, so PTN equipment cannot be managed by in-band DCN during CESservices.
- A. False
- B. True
Answer: A
NEW QUESTION # 97
Which of the following is impossible for the cause of the ETH_LOS alarm?
- A. The cable or fiber of the Ethernet port is not properly connected
- B. The received optical power of the local network element is too low
- C. In-port loopback
- D. Cable or fiber failure
Answer: C
NEW QUESTION # 98
On the PTN equipment, when the tunnel bears data and forwards, which one is wrong in the description of the actions of each node on the LSP?
- A. Penultimate jump pop-up label
- B. The Transit node searches the label forwarding information table and performs label switching
- C. lngress encapsulates the data entering the MPLS domain
- D. In Layer 3 forwarding, the Egress node needs to look up the routing table
Answer: A
NEW QUESTION # 99
Which of the following detection methods can locate the fault point of LSP?
- A. CC
- B. LT
- C. MPLS Pin A.
- D. MPLS Tracert
Answer: B,D
NEW QUESTION # 100
NE1 and NE2 are the intersection nodes of the SNCP ring and the SNCP ring, so how many SNCP protection groups and how many unidirectional cross-connects need to be configured on NE1.
Which of the following is correct?
- A. 4,2
- B. 2,2
- C. 4,4
- D. 2,4
Answer: B
NEW QUESTION # 101
Which of the following logical function blocks is used for multiplexing section switching?
- A. MSP
- B. MST
- C. MSA
- D. SPI
Answer: A
NEW QUESTION # 102
When congestion occurs, what are the packet discarding methods supported by OptiX PTN 1900&3900?
- A. Tail Dro
- B. RED
- C. WRED
- D. CAR
Answer: A,B,C
NEW QUESTION # 103
Which of the following statements about the advantages of QinQ is correct?
- A. Make the user network more independent
- B. Provide a simpler L3VPN solution
- C. Users can plan their own private network VLAN ID
- D. Solve the problem of increasingly scarce public network VLAN ID resources
Answer: A,C,D
NEW QUESTION # 104
Which of the following alarms will be reported when a fiber cut test is performed on a common MSP ring?
- A. TUAIS
- B. R-LOS
- C. BD Status
- D. APSJNDI
Answer: B,D
NEW QUESTION # 105
Create an ETH private line service in the PTN network, and connect an Ethernet tester to the UNI port for RFC2544 testing. The instrument shows that the current port has only sending traffic and no receiving traffic. What are the possible reasons?
- A. The PTN side limits the service rate
- B. The VLAN on the Ethernet tester is inconsistent with the service WLAN
- C. The instrument optical module does not match the equipment optical module
- D. The remote UNI port of the test service on the PTN is not configured with inner loopback
Answer: B,C,D
NEW QUESTION # 106
During the normal operation of the network, the service channel protected by ODUK SNCP generates a condition for triggering protection switching, and the service has been automatically switched to the protection channel. When the fault of the working channel is eliminated, the service cannot be automatically restored to the working channel.
- A. A small number of bit errors occur in the working channel
- B. Manual switching, locking switching or forced switching commands are implemented artificially
- C. The SNCP service type is inconsistent with the service scenario requirements
- D. Protection group 'Recovery Mode' is 'Non-Recovery'
- E. When the working channel is normal, the business needs to delay the "waiting for recovery time" and then switch from the protection channel to the working channel.
Answer: B,C,D,E
NEW QUESTION # 107
When the device reports the PW_APS_DEGRADED alarm, what is the problem with the LTE service carried by the station?
- A. The working protection channels are invalid
- B. None of the working protection channels fail
- C. Business interruption
- D. The working protection channel has a channel failure
Answer: D
NEW QUESTION # 108
The base station is deployed, the Tunnel and PW tests are normal, and the base station management is normal, but the base station cannot access the core network normally.
What is the reason for the impossibility?
- A. The IP addresses of the PTN equipment interconnection interfaces are not in the same network segment
- B. On the L2L3PTN node, the L3VE termination VLAN segment does not include the base station's VLAN segment
- C. There is no route to the address managed by the SGW on L2L3
- D. User packets carry VLAN, but the port attribute is Access
Answer: A
NEW QUESTION # 109
Which one is wrong in the description of hardware redundancy backup of PTN7900-32?
- A. XCS board 6+1 backup
- B. Fan 1+1 Backup
- C. SCA board 1+1 backup
- D. 3+3/4+4/5+5 backup of power supply
Answer: B
NEW QUESTION # 110
Whether it is the OSI reference model or the TCP/IP protocol, the existence of the data link layer is mainly to realize which of the following functions?
- A. Provide media access
- B. Establish a host end-to-end connection
- C. Bitstreaming
- D. Addressing and Routing
Answer: A
NEW QUESTION # 111
DCM optical power debugging requires the input of DCM to be no greater than which of the following values?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 112
When creating a static tunnel, you need to specify the interface of the next hop. Which is the displayed address of the next hop?
- A. does not involve
- B. NE LSR-ID
- C. NEIP
- D. Next-hop interface IP
Answer: D
NEW QUESTION # 113
Four network elements form an STM-4 two-fiber bidirectional multiplexing section protection ring. Which of the following is the maximum service capacity on the ring network?
- A. 63 2M
- B. 504 2M
- C. 1008 2M
- D. 252 2M
Answer: B
NEW QUESTION # 114
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