Free Practice Questions for Huawei H35-210_V2.5 Exam

Service Types and Transmission :

AP/PC (Data Services) : These services are typically Ethernet-based and encapsulated into Ethernet frames before being transmitted over the PON network.

POTS (Voice Services) : Voice services can be either TDM-based or packetized. In modern GPON/XGS-PON systems, POTS is often packetized into Ethernet frames.

CATV (Video Services) : CATV uses a separate wavelength (1550 nm) for analog or digital video transmission.

Wavelength Division Multiplexing (WDM) :

GPON/XGS-PON systems use WDM to transmit multiple services over a single fiber:

One wavelength (1490 nm or 1577 nm) is used for data services (Ethernet).

Another wavelength (1550 nm) is used for CATV.

Analysis of Options :

Option A : Incorrect because CATV is not encapsulated into Ethernet frames; it uses a separate wavelength.

Option B : Correct because CATV uses a separate wavelength, and other services are encapsulated into Ethernet frames before PON transmission.

Option C : Incorrect because POTS services are typically packetized into Ethernet frames in modern systems, not directly encapsulated in GEM frames.

Option D : Incorrect because POTS is not transparently transmitted in modern GPON/XGS-PON systems.

Thus, the correct answer is B .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: GPON Service Encapsulation.

ITU-T G.984.x Standards for GPON .

ONU Activation Overview :

When an ONU (Optical Network Unit) is added to the OLT, it may initially be in a deactivated state (Control flag = deactive).

To bring the ONU online, it must be explicitly activated using the ont activate command.

Command Usage :

The ont activate command is issued in GPON port mode to activate the ONU. Once activated, the ONU transitions to the Online state and begins normal operation.

Why TRUE?

The statement accurately describes the procedure for activating an ONU when the control flag is deactive.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: ONU Activation.

OLT Command Reference Guide by Huawei.

Routing decisions prioritize the longest prefix match. The destination 9.1.4.5 matches both 9.0.0.0/8 (subnet mask 255.0.0.0) and 9.1.0.0/16 (subnet mask 255.255.0.0). The /16 mask is longer, so the second route (9.1.0.0/16) is selected. Protocol priority (OSPF’s 10 vs. RIP’s 100) and metrics (cost) are irrelevant here because the longest prefix takes precedence.

When configuring a static route, certain parameters are required for the route to function correctly. Let us analyze each option:

Option A :

Incorrect : The preference (or administrative distance) is optional. If not specified, the router uses the default preference value for static routes.

Option B :

Incorrect : While the next-hop IP address is commonly used in static route configuration, it is not always mandatory. For example, you can specify an outgoing interface instead of a next-hop address.

Option C :

Incorrect : The subnet mask is essential for defining the network prefix of the destination network. Without the mask, the router cannot determine the range of IP addresses covered by the route.

Option D :

Correct : The subnet mask is mandatory when configuring a static route. It defines the network portion of the destination IP address, enabling the router to match packets to the correct route.

Thus, the correct answer is D .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: Static Route Configuration.

IP Routing and Subnet Masks by Huawei.