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Question 26/53
In the downstream direction of the GPON, all ONUs receive the same data because the broadcast mode is adopted. In the upstream direction, because the same optical splitter is used, the data of a branch fiber can also be received by another branch fiber.
Correct Answer: B
* Downstream Transmission :
* In GPON, downstream data is broadcast to all ONUs. However, each ONU only processes the data intended for it, identified by a unique identifier (ONU ID).
* Upstream Transmission :
* In the upstream direction, GPON uses TDMA (Time Division Multiple Access) to prevent collisions. Each ONU transmits data during its allocated time slot, and the optical splitter does not allow data from one branch fiber to interfere with another.
* Why FALSE?
* The second part of the statement is incorrect. Data from one branch fiber cannot be received by another branch fiber due to the TDMA mechanism and the design of the passive optical splitter.
Thus, the correct answer is B .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: GPON Upstream and Downstream Transmission.
* GPON System Architecture by Huawei.
* In GPON, downstream data is broadcast to all ONUs. However, each ONU only processes the data intended for it, identified by a unique identifier (ONU ID).
* Upstream Transmission :
* In the upstream direction, GPON uses TDMA (Time Division Multiple Access) to prevent collisions. Each ONU transmits data during its allocated time slot, and the optical splitter does not allow data from one branch fiber to interfere with another.
* Why FALSE?
* The second part of the statement is incorrect. Data from one branch fiber cannot be received by another branch fiber due to the TDMA mechanism and the design of the passive optical splitter.
Thus, the correct answer is B .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: GPON Upstream and Downstream Transmission.
* GPON System Architecture by Huawei.
- Question List (53q)
- Question 1: The OLT supports VLAN tag translation. When the SVLANs with ...
- Question 2: Which of the following indicator status indicates that the M...
- Question 3: On an Ethernet network, ARP packets are classified into ARP ...
- Question 4: The pigtail type of the PON optical port is:...
- Question 5: The OLT supports QinQ and VLAN stacking attributes. Which of...
- Question 6: By default, FEC is enabled in the downstream direction in th...
- Question 7: The SNMP protocol is at the ( ) layer in the TCP/IP protocol...
- Question 8: To facilitate subsequent management, a university wants to u...
- Question 9: When adding an ONT to the OLT, you need to:...
- Question 10: Which of the following statements about the loss of fiber co...
- Question 11: What kind of DSL line will affect vectoring performance sign...
- Question 12: During routine O&M, you can run the display ont info com...
- Question 13: Generally, an OLT is a switch or router and a multi-service ...
- Question 14: Which of the following are access network VLAN types? (Selec...
- Question 15: Ethernet switches work in the ( ) layer of the OSI model....
- Question 16: In a traffic profile, the traffic rate can be configured, bu...
- Question 17: By default, ONUs connected to the same PON port of a Huawei ...
- Question 18: When other SNMP parameters are correctly configured, how to ...
- Question 19: Which of the following commands can be used to query the rec...
- Question 20: ADSL G.992.1 (G.dmt) is a technical specification that does ...
- Question 21: GPON is an Ethernet-based passive optical access technology ...
- Question 22: The customer needs to access the following information point...
- Question 23: DHCP implements centralized management of IP addresses. The ...
- Question 24: The MA5800 supports upstream transmission through the contro...
- Question 25: The PADT packet in PPPoE is used to terminate a session....
- Question 26: In the downstream direction of the GPON, all ONUs receive th...
- Question 27: When carrying services, the GEM port needs to map services t...
- Question 28: The 48-bit MAC addresses of computer network interface cards...
- Question 29: Which technology is used by vectoring to cancel inter-VDSL2 ...
- Question 30: When configuring a bridging ONU, how do you set the VLAN of ...
- Question 31: In Huawei access network products, which of the following VL...
- Question 32: When the IP address lease of a DHCP client reaches a specifi...
- Question 33: Which of the following methods can be used to test the reset...
- Question 34: In the GPON system, the GEM frame is the smallest bearer uni...
- Question 35: In a GPON system, dynamic bandwidth assignment (DBA) needs t...
- Question 36: Which of the following protocols are included in Point-to-Po...
- Question 37: Which of the following protocols works at the transport laye...
- Question 38: The OLT supports multiple protection switching modes for GPO...
- Question 39: Access-layer devices are required to provide access for a la...
- Question 40: Which of the following statements about MIB is incorrect?...
- Question 41: Based on the board high availability principle, the MA5800 c...
- Question 42: Which of the following VLAN types is not supported by the MA...
- Question 43: Which one of the following protection schemes can protect br...
- Question 44: A trunk interface allows packets from VLAN 100, VLAN 200, an...
- Question 45: In a 2.4 GHz frequency band, three sub-channels that do not ...
- Question 46: When adding an ONU to the OLT, if Control flag is deactive, ...
- Question 47: The OLT is interconnected with a LAN switch through the GE o...
- Question 48: The ONU connected to the GPON port can go online normally. H...
- Question 49: Which of the following statements about the test of the mean...
- Question 50: If you want to test the optical transmit power of the ONU, c...
- Question 51: The routing table of a router contains the following two ent...
- Question 52: In a GPON network, DBA has the following functions:...
- Question 53: According to the ITU-T G.984.X series standards, the downstr...
