Which of the following statements about XGS-PON key technologies are incorrect? (Select All that Apply)

To ensure data security, XGS-PON uses the AES encryption algorithm to encrypt an entire packet.

The OLT retains equalization delay parameters unchanged after initial ONU registration.

To ensure data security, XGS-PON uses the AES encryption algorithm to encrypt an entire packet.

The dynamic threshold adjustment function enables the OLT to adjust the threshold when receiving optical signals.

The OLT retains equalization delay parameters unchanged after initial ONU registration.

The optical module on the OLT side must support burst transmission.

Which of the following statements about XGS-PON data transmission are incorrect? (Select All that Apply)

GEM ports in a T-CONT cannot exceed twice the number of users.

Each service/user must use different GEM port channels.

GEM ports in a T-CONT cannot exceed twice the number of users.

All services can be carried by the same T-CONT.

Data in the same GEM port can be received by only one ONU.

Which of the following statements about ADSL2+ are incorrect? (Select All that Apply)

Uses sub-channels from 32 to 511 and above 512.

Spectrum bandwidth is 1.104 MHz.

Uses sub-channels from 32 to 511 and above 512.

Maximum downlink speed is 24 Mbit/s.

Maximum reachable distance is 6.5 km.

Spectrum bandwidth is 1.104 MHz.

When maintaining or managing an OLT locally, you can log in to the system through the local serial port. Which of the following port is connected to the RJ-45 connector of the RS-232 serial cable?

Network port of the maintenance PC

If the outband NMS is unreachable, which of the following operations can be performed? (Select All that Apply)

Check whether the IP address is set correctly.

The inband and outband NMS IP addresses cannot be in the same IP address segment.

Check whether the IP address is set correctly.

The inband and outband NMS IP addresses cannot be in the same IP address segment.

Check whether the subnet number and NE number are set correctly.

In a GPON system, which of the following statements about T-CONTs are correct? (Select All that Apply)

All GEM ports must be mapped to T-CONTs.

The OLT transmits services upstream in dynamic bandwidth assignment (DBA) scheduling mode.

All GEM ports must be mapped to T-CONTs.

All ONUs/ONTs connected to the same PON port can use T-CONTs with the same Alloc-ID.

The OLT transmits services upstream in dynamic bandwidth assignment (DBA) scheduling mode.

Carrier that carries services in the GPON upstream direction.

Which of the following statements about VLANs during data service configuration are correct? (Select All that Apply)

When a single tag is used, the service VLAN ID must be the same as the user VLAN ID.

User data can be mapped into different GEM ports according to different VLANs.

Generally, QinQ is used for data services, and inner tags are used to accurately identify different users.

In FTTx planning, broadband users connected to the same PON port use the same outer VLAN.

When a single tag is used, the service VLAN ID must be the same as the user VLAN ID.

User data can be mapped into different GEM ports according to different VLANs.

Generally, QinQ is used for data services, and inner tags are used to accurately identify different users.

In a GPON network, which of the following may cause the ONT to fail to be discovered? (Select All that Apply)

The optical power received by the ONT is less than the sensitivity threshold.

The ONT auto-find function of the GPON port is disabled.

The optical power received by the ONT is greater than the overload optical power.

The optical power received by the ONT is less than the sensitivity threshold.

The ONT auto-find function of the GPON port is disabled.

The upstream port of the OLT is down.

The optical power received by the ONT is greater than the overload optical power.

Factors causing the ODN link loss include: (Select All that Apply)

Extra line loss, about 3 dB in general

Which of the following statements about MIB is incorrect?

The OID in a MIB is usually identified by a group of letters.

The MIB information of a device can be read using the MIB BROWSER tool.

MIB is an important part of the SNMP network management model.

The OID in a MIB is usually identified by a group of letters.

MIB is short for management information library.

The ONU connected to the GPON port can go online normally. However, when you run thedisplay ont infocommand on the OLT to query the ONU information, 'Match state' is displayed as mismatch. The possible causes are:

The actual hardware capability of the ONU is inconsistent with the ONU service profile bound to the ONU.

The ranging process is faulty during registration.

The DBA parameters are set incorrectly.

Huawei H35-210_V2.5 Practice Test 3 - Free Online Exam Questions 81-114

In an ODN network, which of the following protection modes can protect only backbone optical fibers?

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