Practice Free H12-931_V2.0-ENU Exam Online Questions
Regarding the connection between different circuit boards of OTN equipment, which of the following statements is correct? (Multiple choice)
- A . TN12ND2 and TN12NS2 can be connected in AFEC mode
- B . TN12ND2 and TN11ND2 can be connected in AFEC mode
- C . TN12ND2 and TN52ND2 can be connected in AFEC mode
- D . TN12ND2 and TN52/53/54/57NQ2 can be connected in AFEC mode
Currently, the most commonly used signal is 2Mbit/s. Which of the following steps are involved in the process of multiplexing 2Mbit/s signals into STM-N? (Multiple choice)
- A . Rate Adaptation
- B . Add pointer
- C . Add segment overhead
- D . Scrambling
What Ethernet services are supported in the packet mode of Huawei Hybrid MSTP equipment? (Multiple choice)
- A . E_Line
- B . E_AGGR
- C . E_LAN
Loopback is a common operation for daily maintenance and troubleshooting. Which of the following statements about loopback operations are correct? (Multiple choice)
- A . When performing hardware loopback operation on the optical port, it is necessary to consider increasing the optical attenuation
- B . After the external loop is executed, the signal flows to the inside of the WDM network element.
- C . Hardware loopback is the manual loopback of the optical port and electrical port using pigtails and self-loop cables.
- D . After the inner loop is executed, the signal flows to the outside of this WDM network element
Regarding the network-level protection switching test of the OTN system, which of the following statements is correct?
- A . Use ODUk-SNCP protection on top of OLP protection. To avoid secondary switching of SNCR protection, set a delay time in the SNCP protection group.
- B . The power difference between the main and backup channels of the OLR protection group exceeds 3dB by default. An alarm is reported, and the maximum value can be set to 8dB
- C . The default value of the abnormal threshold of the OLP master and backup optical power is more than 5dB, and the switching is executed; the threshold range can be set from -5 to 5
- D . In the OTN-carrying SDH multiplex section ring networking scenario, in order to avoid simultaneous switching of OLP protection and MSP protection, you can set a delay time in the MSP protection group.
In a Layer 2 switching device, if the Ethernet port is an Access port, the port can only receive Ethernet frames without a Vlan or with the same Vlan ID as the port’s default.
- A . True
- B . False
Use CLI to log in to the subrack, enter () and press Enter to view the subrack number.
Which of the following is correct about FEC delay? (Multiple choice)
- A . The typical delay of AFEC of 40G coherent signal is greater than the typical delay of FEC.
- B . 100G SDFEC latency (20%) > 100G HFEC latency (7%)
- C . 100G HFEC latency > 40G AFEC latency
- D . The transmitting end adds overhead for encoding, and the receiving end performs decoding, which both cause signal delay.
What are the technical features of MPLS? (Multiple choice)
- A . Connectionless control plane
- B . Connectionless forwarding plane
- C . Control plane facing the connection
- D . Forwarding plane with connections
When using a script to back up U2000 data, the backup speed is very fast because the backup file is small.
- A . True
- B . False