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質問 1：
Which of the following statements are false about clock configuration guidelines?
A. Tributary signals are used for timing between sites.
B. Wander does not occur in the clock signals that have been transmitted over multiple sites.
C. If a line clock source needs to be traced, ensure that the clock tracing route must be the shortest.
D. The backbone layer and convergence layer must be configured with clock protection and with master and slave clock sources, which are used for clock protection switching.
E. An NE that is connected to a BITS clock or a high-precision external clock will trace an external clock source.
正解：A,B
質問 2：
NG-SDH equipment supports -48 V and -60 V power inputs. For OSN 3500, you can set the monitoring range of power input voltage by setting the power jumpers of N3GSCC. For -48V power input, you need to remove the caps of jumpers J30 and J31.
A. TRUE
B. FALSE
正解：B
質問 3：
When preparing for engineering information, you need to check networking information, such as the network diagram, network protection type, NE IP addresses, NE IDs, NE name allocation table, board information, fiber and cable connections, service routes and timeslot allocation, clock tracing diagram, and orderwire diagram.
A. TRUE
B. FALSE
正解：A
質問 4：
When end-to-end trails fail to be created due to cross-connection conflicts, the NMS displays the conflicting cross-connections and conflict causes. If you delete the conflicting trails, services are not affected.
A. TRUE
B. FALSE
正解：A
質問 5：
What working modes are supported by clocks of an SDH NE?
A. Free-run
B. Synchronizing
C. holdover
D. Tracing
正解：A,C,D
質問 6：
Pointer justification is caused by asynchronous clocks on two interconnected NEs. When one NE reports a positive pointer justification event, the other NE reports a negative pointer justification event.
A. TRUE
B. FALSE
正解：A
質問 7：
A network on which ASON is to be enabled has been configured with transparent transmission of DCC bytes for third-party equipment. Which of the following is true?
A. You can enable ASON for the network, regardless of whether inband or outband DCN is used.
B. You can enable ASON for the network when outband DCN is used.
C. Do not enable ASON for the network, regardless of whether inband or outband DCN is used.
D. You can enable ASON for the network when inband DCN is used.
正解：B
Which of the following statements are false about clock configuration guidelines?
A. Tributary signals are used for timing between sites.
B. Wander does not occur in the clock signals that have been transmitted over multiple sites.
C. If a line clock source needs to be traced, ensure that the clock tracing route must be the shortest.
D. The backbone layer and convergence layer must be configured with clock protection and with master and slave clock sources, which are used for clock protection switching.
E. An NE that is connected to a BITS clock or a high-precision external clock will trace an external clock source.
正解：A,B
質問 2：
NG-SDH equipment supports -48 V and -60 V power inputs. For OSN 3500, you can set the monitoring range of power input voltage by setting the power jumpers of N3GSCC. For -48V power input, you need to remove the caps of jumpers J30 and J31.
A. TRUE
B. FALSE
正解：B
質問 3：
When preparing for engineering information, you need to check networking information, such as the network diagram, network protection type, NE IP addresses, NE IDs, NE name allocation table, board information, fiber and cable connections, service routes and timeslot allocation, clock tracing diagram, and orderwire diagram.
A. TRUE
B. FALSE
正解：A
質問 4：
When end-to-end trails fail to be created due to cross-connection conflicts, the NMS displays the conflicting cross-connections and conflict causes. If you delete the conflicting trails, services are not affected.
A. TRUE
B. FALSE
正解：A
質問 5：
What working modes are supported by clocks of an SDH NE?
A. Free-run
B. Synchronizing
C. holdover
D. Tracing
正解：A,C,D
質問 6：
Pointer justification is caused by asynchronous clocks on two interconnected NEs. When one NE reports a positive pointer justification event, the other NE reports a negative pointer justification event.
A. TRUE
B. FALSE
正解：A
質問 7：
A network on which ASON is to be enabled has been configured with transparent transmission of DCC bytes for third-party equipment. Which of the following is true?
A. You can enable ASON for the network, regardless of whether inband or outband DCN is used.
B. You can enable ASON for the network when outband DCN is used.
C. Do not enable ASON for the network, regardless of whether inband or outband DCN is used.
D. You can enable ASON for the network when inband DCN is used.
正解：B
Fujikoshi -
H31-321出題強化に対応! 初受験にもリトライにも使えると思います。合格しました。Pass4Testさんのおかげです