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NEW QUESTION 116
The protection of the following PTN equipment belongs to the bundling of multiple ports to provide higher bandwidth and reliability. Which one? (multiple choice)
- A. Tunnel APS/PW APS
- B. LAG/ML-PPP
- C. LAG/MC-LAG
- D. OAM/BFD
Answer: B,C
NEW QUESTION 117
The C-band 40-wave system is transformed into a C-band 80-wave system. The correct description is (multiple choice)
- A. The original business signal-to-noise ratio remains unchanged after operation
- B. There is no change in the optical power of the OTU WDM side
- C. Need to re-adjust the light emission power
- D. Unprotected networking operation process will interrupt the original business
Answer: C,D
NEW QUESTION 118
The main survey points of engineering survey are (multiple choices)
- A. The diameter, length, number of power supply circuits, power supply voltage, power supply power of the power cord
- B. Length of optical fiber, interface type
- C. Impedance, wire diameter, length, and connector of the relay cable
- D. Computer room installation environment such as the height of the computer room, wiring method, ground type, load-bearing capacity of the computer room, seismic requirements, row spacing, etc.
Answer: A,B,C,D
NEW QUESTION 119
For back-to-back OTM sites, three new relay wavelengths are added. The schematic diagram is as follows. The following statement is wrong
- A. No need to adjust the VOA on the wave
- B. No impact on business on OTM site
- C. There is no need to adjust the input optical power of the optical amplifier board
- D. No need to adjust the VOA on the repeater wavelength
Answer: D
NEW QUESTION 120
If the OSN6800 device wants to achieve 1588V2 time synchronization, it must be configured with an electrical crossover board
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 121
An ETH_LOS or LINK_ERR alarm occurs on a single Ethernet port of a multi-interface Ethernet board, and the service is interrupted.The possible reasons are: the working mode of the Ethernet port is not matched or the interface rate is inconsistent, the optical module hardware is faulty, and the possible reasons are?
- A. Optical fiber connection error
- B. MTU parameter setting is too small
- C. Ethernet port attribute setting error
- D. SDH line VC4 channel failure
Answer: A
NEW QUESTION 122
When the OTN equipment is connected to the Cisco equipment, the amount of CRC error packets on the Cisco equipment interface is relatively large. The impossible reasons are:
- A. The docking optical module is faulty
- B. The amount of error on the line side of the OTN equipment is large
- C. Abnormal docking optical power
- D. The type of the docking optical module is wrong
Answer: D
NEW QUESTION 123
In the Solaris dual-system hot backup system, using "ls -l" to query the file1 file information is "-rwxr-xr-- 2wjm newservice 321 Oct 17 09: 33 file1" The following statement is wrong ()
- A. Characters 2-4 "rwx": indicates that the file owner wjm's rights to file1 are readable, writable and executable
- B. The 8th-10th character "r--": indicates that the rights of other users to file1 are readable, not writable, and not executable"
- C. The fifth field "321": indicates that the size of the file is 321kb
- D. Characters 5-7 "rx": indicates that the rights of all users in this user group newservice to the file file1 are: readable, not writable, executable
Answer: C
NEW QUESTION 124
After the ASON network has experienced many topological changes, the LSP of each business is often not optimal, so it provides optimization functions.
Which of the following options are not features of the optimization function?
- A. Rerouting, upgrading, de-escalation, deletion, etc. cannot be performed while optimizing
- B. Only manual optimization is supported, and optimization cannot change the protection level of the optimized LSP
- C. Optimization cannot be performed when creating, rerouting, upgrading, restarting, and deleting
- D. Business routing cannot be restricted during the optimization process
Answer: D
NEW QUESTION 125
The following statements about the main and backup channels of optical line protection are wrong:
- A. When the difference between the main and standby optical power exceeds the threshold, the optical switch will switch the service to the standby channel, and the set value supports query. The recommended setting is 5db.
- B. If the current optical power difference between the main and backup channels exceeds the "main and backup channel difference threshold (dB)", the system will undergo protection switching.
- C. "Initial difference between the main and backup channels (dB)"-used to set the reference value of the optical power difference between the main and backup channels of the board.
- D. "Main and standby channel difference threshold (dB)" One is used to set the signal failure (SF) when the difference in optical power between the main and standby optical ports of a single board reaches a certain value.
Answer: A
NEW QUESTION 126
When deploying QoS, where the complex classification of data flows is usually deployed in the network
- A. Edge access layer
- B. Convergence layer
- C. Core layer
Answer: A
NEW QUESTION 127
Data collection is very important for on-site maintenance engineers. It can not only understand and deal with faults well, but also provide a basis for future processing. What information needs to be collected when EMS/EFS/EGS panels are used for data collection? (multiple choice)
- A. Public basic data such as version and other basic information that require feedback
- B. EPL/EPLn business issues require feedback data such as the number of VCTRUNK, etc.
- C. Special configuration issues require feedback data such as Qos, etc.
- D. EVPL/EVPLn business issues require feedback data, such as test frame feedback information, etc.
Answer: A,B,C,D
NEW QUESTION 128
The OSN8800 device newly expanded a TN55ND2 board, and it was found that the board could not go online. The following reasons are impossible:
- A. SWDL_CHGMNG_NOMATCH alarm exists in the main control
- B. SWDL_AUTOMATCH_INH alarm exists in the main control
- C. SWDL_PKG_ NOBDSOFT alarm exists in the main control
- D. SWDL_BD_WEAKMATCH alarm exists in the main control
Answer: D
NEW QUESTION 129
Regarding the configuration description of the U2000 northbound CORBA interface, what is wrong is
- A. The U2000 northbound CORBA interface and the U2000 server run on the same machine, and the machine configuration is required to be able to install and run the U2000 server, and no additional hardware configuration is required
- B. In the U2000 CORBA configuration, configure at least one of the filtering virtual network element switch and virtual network element switch collar
- C. Set the host address, enter the host name or IP address according to the network management plan and design. The "host" mentioned here refers to the computer that provides CORBA services
- D. The default port numbers of normal mode and SSL mode in the basic configuration of U2000 CORBA are different
Answer: B
NEW QUESTION 130
It is found that the U2000 dual machine of the customer network is in the dual master state. In the measures and descriptions of the problem, the correct one is () (multiple choice)
- A. Check whether the heartbeat line between the main and standby machines is working properly
- B. If it is a DCN problem, you can use the command #vradmin -g datadg repstatus datarvg at the main site to check the status of the high-availability system after the repair
- C. Run the command #vradmin -g datadg repstatus datarvg, and find that the data status is "consistent, up-to-date", which means that the primary and secondary data are not synchronized and need to be updated
- D. You can first check whether there is any abnormality in the operating status of the main and standby machines
Answer: A,B,D
NEW QUESTION 131
What problems in the network cannot be solved by QoS?
- A. Service bandwidth
- B. Transmission resource
- C. Packet loss rate
- D. Delay jitter in transmission
Answer: B
NEW QUESTION 132
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