Huawei HCIE-Transmission (H12-931) Certification Sample Questions

01. Why is cross-connection setup critical in MS-OTN service configuration?
a) It encrypts Ethernet frames end-to-end.
b) It determines the physical cabling paths.
c) It defines logical service paths between endpoints.
d) It dynamically allocates IPv6 addresses.

02. A mobile carrier needs to synchronize multiple transmission nodes to support 5G services with sub-microsecond accuracy. Which synchronization method is most appropriate?
a) PTP-based synchronization with GPS backup
b) SNMP-based configuration
c) Manual clock adjustment
d) FTP synchronization over Ethernet

03. An operator wants optical-layer services to automatically reroute if a fiber cut occurs, and electrical-layer services to have an additional independent backup.
Which strategy should be implemented?
a) Static cross-connections only
b) Nested protection across optical and electrical layers
c) Manual path switching upon alarms
d) Disabling protection features to save bandwidth

04. A carrier is deploying a transmission backbone network that must support premium video conferencing, best-effort internet access, and voice services. Strict service differentiation is needed based on application type.
Which QoS model should be implemented to meet this requirement?
a) Best-effort forwarding
b) Static routing without traffic classification
c) IP over ATM
d) DiffServ-based classification and scheduling

05. Which key technology improves signal quality in Huawei’s ULH solutions?
a) Microwave hopping
b) Coherent detection and advanced FEC (Forward Error Correction)
c) RF signal amplification
d) Static electrical cross-connection

06. What is a key reason for reconstructing an existing OTN network?
a) To replace fiber with copper
b) To expand service capacity and improve flexibility
c) To convert optical signals into RF signals
d) To reduce optical transmission distances

07. What is a benefit of using Super C-band technology in WDM systems?
a) Reduced optical amplification
b) Elimination of fiber nonlinearities
c) Expanded wavelength capacity for transmission
d) Use of shorter wavelength channels

08. Which Huawei product family is primarily used for building DCI optical transport networks?
a) OptiXtrans DC908/OptiXtrans E6600 series
b) CloudEngine switches
c) AR Router series
d) NetEngine WAN routers

09. Why is the adoption of all-optical switching important for future optical networks?
a) It increases optical signal degradation.
b) It improves network agility and reduces latency.
c) It forces manual reconfiguration.
d) It limits wavelength channel density.

10. What must be enabled to deploy optical-layer ASON services in a NG WDM network?
a) Electrical layer switching
b) Manual service provisioning
c) Optical control plane
d) Static ODU cross-connections