H12-931-ENU 是高品質的題庫資料

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購買後，立即下載 H12-931-ENU 題庫 (Huawei Certified Internetwork Expert-Transmission): 成功付款後, 我們的體統將自動通過電子郵箱將您已購買的產品發送到您的郵箱。（如果在12小時內未收到，請聯繫我們，注意：不要忘記檢查您的垃圾郵件。）

最新的 HCIE-Transmission H12-931-ENU 免費考試真題:

1. Which of the following descriptions of the 100G hybrid transmission system is wrong ()?

A) In mixed transmission, the coherent signal starts from the long wavelength, 10G starts from the short wavelength, and the isolation band can be filled with 40G DQPSK wavelength
B) 40G DQPSK and coherent signals will not affect each other, no isolation band is required
C) The mixed transmission cost is related to the number of transmission spans and the width of the isolation band, and has nothing to do with the FEC encoding method
D) Coherent and non-coherent signals (10G, 40G ODB) will affect each other, resulting in a sharp drop in performance, and isolation bands are necessary

2. The following are not precautions for preliminary testing:

A) When performing a 24-hour bit error test, ensure that the entire test process is free from external interference (including human factors and power supply conditions, etc.). If there is an abnormality, the exact time of the abnormality should be recorded or the test should be repeated. The test time does not need to exceed 24 hours.
B) When testing, be careful not to look directly at the optical transmitter interface, so as not to damage your eyes.
C) Before the test, check whether the required test wires are complete, the type of connector and the applicability of the instrument and whether the connection is good.
D) Prepare cotton swabs and alcohol, and pay attention to the cleaning of the connector at all times when testing the optical interface characteristics to ensure the accuracy of the test data.

3. What's wrong with the description of the 1+1 protection on the client side?

A) 1+1 protection on the client side of this subrack: The working OUT unit and the protection OTU unit are located in the same subrack of the same network element. This kind of protection is called 1+1 protection on the client side of the subrack. It is recommended to use the SCS board for this type of protection.
B) Cross-network element client-side 1+1 protection: The working OTU unit and the protection OTU unit are in different network elements, which is called cross-network element client-side 1+1 protection. This type of protection must use OLP or DCP boards.
C) When the SCS board is used, the client side lasers of the working OTU unit and the standby OTU unit are both turned on, and the system controls the SCS board through the SCC board to achieve selective reception of signals.
D) Cross-subrack client side 1+1 protection: Working OTU unit and protection OTU unit are in different subrack of the same network element, which is called cross-subrack client side 1+1 protection. This type of protection must use OLP or DCP boards.

4. User A and user B belong to the Team group. User A has a file File1.
After running the command "$ chmod 750 File1", the following statement is wrong.

A) Users who are not in the Team group, only have read access to File1
B) User A has read/write/execute permissions to File1
C) Users in the Team group have read and execute permissions on File1
D) User B cannot modify File1 and does not have this permission

5. OSN6800 reports the commun_fail alarm from the SCC board of subrack 2, the third digit of the parameter is 0X04, the network element is not disconnected, and the master subrack and slave subrack 1 have no abnormal alarms. The possible cause of the failure is (multiple choice)

A) The network cable between subrack 2 and 3 is faulty
B) Slave 2 AUX board failure
C) The AUX board of the main subrack is faulty
D) Slave 3 AUX board failure

問題與答案：

問題 #1 答案： C

問題 #2 答案： A

問題 #3 答案： C

問題 #4 答案： A

問題 #5 答案： A,B,D