H12-931-ENU 試験問題と解答 - 模擬練習 - 練習問題・模擬試験

Question No : 1
Regarding electrical layer protection ODUk SNCP and branch SNCP, which one is different in the following description?

A.Cross particles
B.Scope of protection
C.Protection subtypes
D.How it works

正解:

Question No : 2
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

正解:

Question No : 3
ODUk_PM_AIS alarm is one of the conditions for ODUK_SNCP switching.

A.TRUE
B.FALSE

正解:

Question No : 4
Which step does getEventChannel belong to in CORBA's working principle?

A.Session maintenance
B.Session announcement
C.Information inquiry
D.Session initialization

正解:

Question No : 5
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.

正解:

Question No : 6
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

正解:

Question No : 7
The technical specifications of the GE optical interface of a PTN device are known as follows: average transmit optical power (dBm): -5 ~ 0, receiving sensitivity (dBm): -23, minimum overload point (dBm): -3, minimum extinction ratio (DB): 9, for this optical interface, which of the following optical powers (dBm) is the most appropriate received optical power?

A.-3
B.-15
C.-5
D.0

正解:

Question No : 8
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.

正解:

Question No : 9
In the 40-wave system of WDM equipment, due to the aging of the customer's optical cable, the optical cable should be changed between 2# and 3# sites, and the 4# optical amplifier site should be added between 2# and 3#.
Which of the following statement is correct?

A.2# site optical power does not need to be re-commissioned
B.3# site optical power does not need to be re-commissioned
C.Need to consider whether the dispersion budget is enough
D.No need to consider whether the dispersion budget is enough

正解:

Question No : 10
Regarding the create upgrade task process, which of the following statement is wrong?

A.The upgrade operator must use the "admin" level user for health check, otherwise some check items will fail to execute and reduce the check efficiency.
B.For gateway NEs, if you select the configuration item "Enforce the FTP/SFTP protocol for loading if the NE to be loaded is a gateway NE", you need to configure an FTP/SFTP server on the network management server to increase the loading speed.
C."Force Parallel Activation". In this activation mode, all packets are activated in parallel, which will cause business interruption.
D.Select “Customize with package. The software added by the user is part of the package, that is, matching based on the board on the network element can increase the efficiency of the package".

正解:

Question No : 11
For 1+1 protection in the OTU board of the external OLP, it supports both non-expanded mode and extended mode. The extended mode adds the switching conditions of the electrical layer.

A.TRUE
B.FALSE

正解:

Question No : 12
When 172.17.15.0/28 is for the subnet partition, which of the following addresses are legal subnet addresses? (Multiple Choice)

A.172.17.15.0
B.172.17.15.8
C.172.17.15.40
D.172.17.15.96

正解:

Question No : 13
All operations on site can be operated in accordance with their own experience, and do not need to strictly follow the changing operation steps.

A.TRUE
B.FALSE

正解:

Question No : 14
SYNLOCK V3 device can achieve the different clock accuracy class by different boards configuration, which of the following can be achieved by SYNLOCK V3? (Multiple Choice)

A.SEC
B.LPR
C.TNC
D.LNC

正解:

Question No : 15
If the meter sends a data frame rate of X and a received data frame rate of Y, then the packet loss rate = (X-Y)/X*100%, usually the packet loss rate+throughput=1

A.TRUE
B.FALSE

正解:

Huawei H12-931-ENU 問題練習