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NEW QUESTION # 13
The OLT supports the ( ) VLAN attributes. (Select All that Apply)
- A. Common
- B. Stacking
- C. QinQ
- D. MUX
Answer: A,B,C
NEW QUESTION # 14
Which of the following is the downstream wavelength of XGS-PON?
- A. 1290 nm
- B. 1577 nm
- C. 1490 nm
- D. 1310 nm
Answer: B
Explanation:
* XGS-PON Wavelengths :
* XGS-PON (10-Gigabit Symmetric Passive Optical Network) uses specific wavelengths for upstream and downstream transmission:
* Downstream (OLT to ONU) : 1577 nm.
* Upstream (ONU to OLT) : 1270 nm.
* Why 1577 nm?
* The ITU-T G.9807.1 standard specifies 1577 nm as the downstream wavelength for XGS-PON.
This wavelength is chosen to avoid interference with GPON, which uses 1490 nm for downstream transmission.
* Other Options :
* 1490 nm : Used for downstream transmission in GPON, not XGS-PON.
* 1310 nm : Used for upstream transmission in GPON, not XGS-PON.
* 1290 nm : Not a standard wavelength in PON technologies.
Thus, the correct answer is C .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: XGS-PON Wavelengths.
* ITU-T G.9807.1 Standards for XGS-PON .
NEW QUESTION # 15
MA5600T checks whether the currently running single board software version meets the requirements for on-site deployment.
Which command is used?
- A. display version
- B. display language
- C. display board
- D. All of the above
Answer: A
NEW QUESTION # 16
Is the following description correct? When the MA5680T is configured with multicast services, the unicast VLAN carrying the multicast services must be consistent with the multicast VLAN.
- A. True
- B. False
Answer: B
NEW QUESTION # 17
Which of the following statements about XGS-PON data transmission are incorrect? (Select All that Apply)
- A. Data in the same GEM port can be received by only one ONU.
- B. Each service/user must use different GEM port channels.
- C. GEM ports in a T-CONT cannot exceed twice the number of users.
- D. All services can be carried by the same T-CONT.
Answer: C
NEW QUESTION # 18
MA5600T provides various networking protection functions. Which of the following protection features is usually used for upstream port protection?
- A. Smart Link and Monitor Link features
- B. GPON Type C protection
- C. GPON Type B protection
- D. Ethernet link aggregation
Answer: A,D
NEW QUESTION # 19
Which of the following optical modules has the most sufficient optical loss budget?
- A. CLASS C+
- B. CLASS C++
- C. CLASS B+
- D. CLASS B
Answer: B
Explanation:
Optical Module Classes:
Optical modules are classified based on their optical loss budget, which determines the maximum distance they can support over fiber-optic cables.
Class Comparison :
CLASS B: Supports shorter distances with lower optical loss budgets.
CLASS B+: Provides a higher optical loss budget than CLASS B, supporting longer distances.
CLASS C+: Offers an even higher optical loss budget, suitable for extended-reach deployments.
CLASS C++: Provides the highest optical loss budget, enabling the longest reach and greatest flexibility in network design.
Why B?
CLASS C++ has the most sufficient optical loss budget, making it the best choice for scenarios requiring maximum reach and reliability.
Thus, the correct answer is B.
NEW QUESTION # 20
The 48-bit MAC addresses of computer network interface cards are allocated by the IETF to vendors and globally unique.
- A. FALSE
- B. TRUE
Answer: A
Explanation:
MAC (Media Access Control) addresses are 48-bit identifiers assigned to network interfaces for communication on a local network.
* Allocation of MAC Addresses :
* MAC addresses are not allocated by the IETF . Instead, they are managed and assigned by the IEEE (Institute of Electrical and Electronics Engineers) .
* The IEEE assigns blocks of MAC addresses to hardware manufacturers (vendors), who then assign unique MAC addresses to their devices.
* Structure of MAC Addresses :
* The first 24 bits (Organizationally Unique Identifier, OUI) identify the manufacturer.
* The remaining 24 bits are assigned by the manufacturer to ensure global uniqueness.
* Why FALSE?
* The statement incorrectly attributes the allocation of MAC addresses to the IETF, which is responsible for Internet standards like TCP/IP, not MAC address allocation.
Thus, the correct answer is FALSE .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: MAC Addressing.
* IEEE OUI Assignment Process .
NEW QUESTION # 21
Is the following description correct? The DC upgrade tool requires the support of a license.
Without a license, 30 units can be concurrently concurrent by default, and a maximum of 60 units can be concurrent with a license.
- A. True
- B. False
Answer: B
NEW QUESTION # 22
Which of the following statements about static routes is correct?
- A. Static routes have been set before a router is delivered to the market.
- B. When the network topology changes, static routes need to be recalculated.
- C. Static routes are learned from another routing protocol and imported to a local routing table.
- D. Static routes are manually added to a routing table but are not dynamically updated by a routing protocol.
Answer: D
Explanation:
Static routes are manually configured by network administrators and are not dynamically updated by routing protocols. Let us analyze each option:
* Option A :
* Correct : Static routes are manually added to the routing table by the administrator. They remain unchanged unless manually modified or removed.
* Option B :
* Incorrect : Static routes are not automatically recalculated when the network topology changes.
If a static route becomes invalid due to a topology change, the administrator must manually update it.
* Option C :
* Incorrect : Static routes are not learned from other routing protocols. Routes learned from dynamic protocols (e.g., OSPF, RIP) are dynamic routes, not static routes.
* Option D :
* Incorrect : Static routes are not preconfigured on routers before delivery. They are configured by administrators based on the network design.
Thus, the correct answer is A .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: Static Routing.
* Routing Protocols and Static Routes by Huawei.
NEW QUESTION # 23
Regarding the UA5000 IPMB single board, which one of the following descriptions is wrong?
- A. 8 GE optical ports can be provided as uplink ports
- B. Forward PVMB's VoIP service, and realize IP uplink through FE/GE electrical port or GE optical port.
- C. Support main/standby switchover
- D. IPMB is an IP service processing board, used to converge and process broadband services
Answer: A
NEW QUESTION # 24
On an Ethernet network, ARP packets are classified into ARP Request packets and ARP Response packets. In the initial communication phase, how are ARP Request packets transmitted on the network?
- A. Multicast
- B. Anycast
- C. Unicast
- D. Broadcast
Answer: D
Explanation:
The Address Resolution Protocol (ARP) is used to map IP addresses to MAC addresses in a local network.
ARP operates at the data link layer (Layer 2) of the OSI model and is essential for communication within a LAN.
* ARP Request :
* When a device needs to communicate with another device on the same network but does not know the destination's MAC address, it sends an ARP Request .
* Since the sender does not know the MAC address of the destination, it cannot send the request directly to the destination using unicast. Instead, the ARP Request is sent as a broadcast packet to all devices on the local network.
* The broadcast packet has a destination MAC address of FF:FF:FF:FF:FF:FF, which ensures that all devices on the network receive the packet.
* ARP Response :
* The device with the matching IP address responds with an ARP Reply , which is sent as a unicast packet back to the requesting device.
* Why Not Other Options?
* Anycast : This involves sending packets to the nearest device in a group of devices sharing the same IP address. ARP does not use anycast.
* Unicast : ARP Requests cannot be sent as unicast because the sender does not yet know the destination's MAC address.
* Multicast : Multicast is used for sending packets to a specific group of devices, but ARP Requests are sent to all devices on the network, making broadcast the correct choice.
Thus, ARP Requests are transmitted as broadcast packets .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: ARP Protocol and Operation.
* Ethernet Networking Fundamentals by Huawei.
NEW QUESTION # 25
Which of the following technologies uses twisted pair as the transmission medium? (Multiple choice)
- A. LTE
- B. CATV
- C. GPON
- D. G.fast
- E. VDSL
Answer: A,D,E
NEW QUESTION # 26
Which of the following descriptions about DHCP is incorrect?
- A. The message interaction experienced by DHCP to obtain an address normally includes Discover, Offer, Request, ACK
- B. Multiple DHCP servers are not allowed in the network at the same time, because multiple servers will respond at the same time, and the client cannot select an address
- C. If the client abandons the current IP address, she uses a DHCP RELEASE message to notify the server, and the server reclaims this address for next use.
- D. The Discover message between the DHCP Relay and the DHCP server is a unicast message
Answer: B
NEW QUESTION # 27
According to the ITU-T G.984.x series of standards, what is the downstream transmission wavelength of the GPON network in nm?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 28
VLAN division includes which of the following methods?
- A. Based on physical location
- B. Based on port
- C. Based on MAC address
- D. Based on agreement
Answer: B,C,D
NEW QUESTION # 29
How to confirm the ip address of the Sybase database server during the installation of the network management system?
- A. # cat /opt/sybase/interfaces
- B. # cat /etc/hosts
- C. # ifconfig -a
- D. # less /etc/hosts
Answer: A
NEW QUESTION # 30
IPMB is the broadband control board of UA5000.
What are its main functions?
- A. Used to converge and process broadband services (ADSL, VDSL, SHDSL, LAN)
- B. Supports multicast services and can provide dedicated multicast channels.
- C. Forward the VoIP service of the PVM single board, and realize the IP uplink through the FE or GE interface.
- D. Provide broadband switching resources, have dual-system hot backup function, and support active/standby switchover.
Answer: A,B,C,D
NEW QUESTION # 31
What is the maximum number of ADSL2+ users provided by the MA5600 single frame?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 32
According to the ITU-T G.984.x series of standards, what are the upstream and downstream bandwidths of GPON?
- A. 2.5Gbps/1.25Gbps
- B. 1.25Gbps/1.25Gbps
- C. 1.25Gbps/2.5Gbps
- D. 2.5Gbps/2.5Gbps
Answer: C
NEW QUESTION # 33
The Ethernet technology is a widely used technology. According to different transmission rates, the Ethernet technology is classified into 10 Mbit/s, 100 Mbit/s, and 1000 Mbit/s. The 10 Mbit/s and 100 Mbit/s Ethernet transmission media are twisted pairs, but the 1000 Mbit/s Ethernet is too fast and requires optical fibers as the transmission media.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 34
Is the following description correct? The UA5000 and lanswitch are connected through GE, and the working mode of the ports on both sides can be auto-negotiation mode and mandatory mode.
- A. True
- B. False
Answer: B
NEW QUESTION # 35
When adding an ONT to the OLT, you need to:
- A. Add an ONT and bind a profile.
- B. Configure a DBA profile.
- C. Configure an ONT service profile.
- D. Configure an ONT line profile.
Answer: A
Explanation:
* Adding an ONT to the OLT :
* Adding an ONT (Optical Network Terminal) to the OLT involves several steps, but the critical step is registering the ONT and binding it to the appropriate profile.
* Key Steps :
* DBA Profile : Configures dynamic bandwidth allocation for the ONT but is not mandatory during initial registration.
* ONT Service Profile : Defines services (e.g., Internet, IPTV) but is applied after the ONT is added.
* Add ONT and Bind Profile : Registers the ONT with the OLT and binds it to a pre-configured line profile. This is the essential step for adding an ONT.
* ONT Line Profile : Configures the VLAN and service parameters but is created before adding the ONT.
* Why C?
* The most critical action when adding an ONT is to register it and bind it to a profile, ensuring it is recognized and operational within the network.
Thus, the correct answer is C .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: ONT Registration.
* OLT Command Reference Guide by Huawei.
NEW QUESTION # 36
In the ODN network, which of the following protection methods can only protect the backbone fiber? (Multiple choice)
- A. TypeC dual-homing protection
- B. TypeB single-homing protection
- C. TypeB dual-homing protection
- D. Typec single-homing protection
Answer: A,D
NEW QUESTION # 37
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