Huawei H35-210_V2.5 Exam Questions Instant Access

Question 1

When the IP address lease of a DHCP client reaches a specified point, the DHCP client renews the IP address lease. The number of times for sending renewal packets decreases as the number of times for IP address renewal increases.

ATRUE

BFALSE

Answer : B

Question 2

If you want to test the optical transmit power of the ONU, connect a common power meter to the upstream port of the ONU and select the 1310 nm wavelength to read the power value.

ATRUE

BFALSE

Answer : B

Testing Optical Transmit Power :

Testing the optical transmit power of an ONU involves measuring the power output at its upstream port.

Key Considerations :

Wavelength : The upstream wavelength for GPON/XGS-PON is 1310 nm , so selecting this wavelength is correct.

Power Meter Type : A common power meter is not suitable for testing optical power in live networks. Instead, a specialized optical power meter or an OLT-based monitoring tool should be used.

Why FALSE?

Using a common power meter is incorrect because it may not provide accurate readings or could disrupt network operation.

Thus, the correct answer is B .

HCIA Huawei ACCESS Official Documentation , Chapter: ONU Optical Testing.

Optical Power Measurement Procedures by Huawei.

Question 3

During routine O&M, you can run the display ont info command to query the running status (Run state) of the ONU. Which of the following states indicates that the ONU is in the online state?

AOnline

BActive

CMatch

DOffline

Answer : A

ONU States Overview :

The display ont info command provides detailed information about the status of an ONU (Optical Network Unit), including its operational state.

Key States :

Online : Indicates that the ONU is registered, authenticated, and actively communicating with the OLT. This is the desired state for normal operation.

Active : Refers to the ONU being powered on but not necessarily fully registered or authenticated.

Match : Indicates that the ONU configuration matches the OLT's expected configuration, but this does not guarantee online status.

Offline : Indicates that the ONU is not registered or communicating with the OLT.

Why A?

The Online state explicitly confirms that the ONU is registered, authenticated, and functioning properly within the network.

Thus, the correct answer is A .

HCIA Huawei ACCESS Official Documentation , Chapter: ONU Management.

OLT Command Reference Guide by Huawei.

Question 4

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

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

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

CThe upstream port of the OLT is down.

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

Answer : A, B, D

A:Weak optical power prevents ONT registration.

B:Auto-find must be enabled for ONT discovery.

D:Excessive optical power saturates the receiver.

Question 5

Which of the following statements about the use of the ADSL interleave mode are correct?

AWorse stability and shorter delay.

BBetter stability and longer delay.

CBetter stability and shorter delay.

DWorse stability and longer delay.

Answer : B

ADSL Interleave Mode :

Interleave mode is used in ADSL to improve error correction by interleaving data bits before transmission.

This process introduces additional latency (delay) but enhances stability by reducing the impact of impulse noise.

Why B?

Better stability : Interleaving spreads errors across multiple frames, making it easier to correct them.

Longer delay : The interleaving process adds latency due to the time required to reorder data bits.

Other Options :

A : Incorrect because interleave mode improves stability, not worsens it.

C : Incorrect because interleave mode increases delay, not reduces it.

D : Incorrect because interleave mode improves stability.

Thus, the correct answer is B .

HCIA Huawei ACCESS Official Documentation , Chapter: ADSL Modes.

ADSL Interleaving and Fast Path by Huawei.

Question 6

If the value of the PROTOCOL field in the PPP protocol is 8021, which of the following protocols is used?

AIPCP

BLCP

CIPX

DIP

Answer : A

PPP Protocol Overview :

PPP (Point-to-Point Protocol) uses the PROTOCOL field in its header to identify the type of encapsulated protocol.

Protocol Field Values :

0x8021 : Indicates IPCP (Internet Protocol Control Protocol) , which is used to negotiate IP-related parameters during PPP session establishment.

0xC021 : Indicates LCP (Link Control Protocol) , which is used for establishing, configuring, and testing the PPP link.

0x002B : Indicates IPX (Internetwork Packet Exchange) .

0x0021 : Indicates IP (Internet Protocol) .

Why A?

The value 0x8021 corresponds to IPCP , making it the correct answer.

Thus, the correct answer is A .

HCIA Huawei ACCESS Official Documentation , Chapter: PPP Protocol.

RFC 1661: PPP Protocol Specification .

Question 7

When carrying services, the GEM port needs to map services to the T-CONT units for upstream service scheduling. Each ONU supports multiple T-CONTs, and different types of T-CONTs can be selected for different service types.

ATRUE

BFALSE

Answer : A

Huawei HCIA-Access V2.5 H35-210_V2.5 Exam Questions