The function of PW OAM is basically the same as that of Tunnel. The PW OAM mechanism can effectively detect, confirm and locate defects and faults originating from the PW layer network.
Which of the following features are not available in PW OAM?
A . LB
B . Ping
C . BDI
D . FDI
Answer: B
Which of the following information do you need to pay attention to when the TOA board starts the GE service? (Multiple Choice)
A . MTU value
B . Ethernet working mode
C . Docking module type
D . Ethernet VLAN information
Answer: ABC
Which of the following protections in a microwave device does not require a dual slot?
A . SD
B . FD
C . HSB
D . SD+FD
Answer: C
For NG-SDH equipment equipped with dual main control, when the main control board is upgraded, which of the following statement is correct?
A . After completing the upgrade of the standby main control board, the original active main control can be upgraded if the standby main control board is switched.
B . Upgrade the active main control board directly, and then upgrade the standby main control board
C . Complete the upgrade of the standby main control board first, and then perform a hard reset of the current active main control board to make its active and standby switchover, and then upgrade the current compensation standby main control board.
D . Upgrade the main control board first and then upgrade the standby main control board in the same way
Answer: C
A network has SDH series of 2255 equivalent NEs, the WDM series of 1000 equivalent NEs, router series of 1000 equivalent NEs. Customers purchased value-added features such as SDH end-to-end, WDM end-to-end, and Corba northbound.
Regarding this network management deployment plan, which of the following is wrong?
A . Because there are SDH, OTN, and router series network elements, you need to install the SDH network element manager, OTN network element manager, and router network element manager subsystem.
B . The maximum management ability of SDH NE manager subsystem is 2500 equivalent NEs, so it is necessary to deploy SDH network element manager instance; the maximum router management ability of NE manager subsystem is 5000 equivalent NEs, so it is necessary to deploy 1 router NE management instance.
C . Due to purchase the SDH end-to-end, WDM end-to-end value-added features, so you need to install SDH network management subsystem, OTN network management subsystem; due to the purchase of Corba northbound interface, so you need to install Corba northbound subsystem
D . If the OTN series network elements are OSN 6800 + OSN 8800T32 (without ASON, the ratio between the two is 1:1), where OSN 6800 is used as the master subrack and OSN 8800 is used as the slave subrack. And each master subrack only carries one slave subrack. The actual OSN 8800 physical network element number is 125.
Answer: B
The following is about the system OSNR commissioning error:
A . Adjust single-wave flatness first, and then adjust the main line optical power
B . One of the measurement principle of the MPI-R point system OSNR flatness: After the pump power is determined, test the OSNR flatness of the MPI-R point by a spectrometer detector, if the OSNR flatness is not to up standard (OSNR flatness index ≤ 2dB), then Need to adjust M40
D . The multiplexer is an M40V single board, "looking at the receiving end and debugging the transmitting end". When the optical power flatness meets the requirements of the index, the optical power flatness can be sacrificed to ensure the OSNR (or BER) flatness
E . APE automatically adjusts the optical power of each channel to ensure that the optical power at the receiving end is flat, thereby ensuring the flat of OSNR
Answer: A
Which step does getEventChannel belong to in CORBA’s working principle?
A . Session maintenance
B . Session announcement
C . Information inquiry
D . Session initialization
Answer: D
The business sharing VCTRUNK, which isolation methods can we use to achieve business isolation? (Multiple Choice)
A . MAC address
B . VLAN ID
C . MPLS label switching
D . QINQ VLAN Nesting
Answer: BCD
There is a lower limit for the length of an Ethernet frame. What is the main reason for this?
A . Carrier sense
B . Multipoint access
C . conflict detection
D . Improve network bandwidth utilization
Answer: C
For 10G and coherent 100G mixed transmission systems, which of the following description is correct?
A . It is recommended to use a long wavelength for the 10G channel and a short wavelength for the 100G channel.
B . Commissioning is based on 100G commissioning requirements, that is, non-standard fiber optic power commissioning.
C . For 100G single wave, because the dispersion tolerance is very large, the dispersion compensation can be compensated according to the 10G compensation principle.
D . 100G board OSNR threshold and 10G are basically the same, so the configuration of the amplification plate according to 10G standard is ok.
Answer: C