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Network class - April 21st [Community Learning Week •Phase 13] Activity

Latest reply: Apr 21, 2022 20:09:31 469 68 37 0 0

Hello, everyone!

Join the Community Learning week Access Network topic!


I hope everyone can continue to read this article because access networks are the closest networks to us, from businesses to our homes, and all of us. Thank you very much for your support. I hope you can get help from this post and the Access network.


Network Class


Network class learning time of this phase: April 18th - April 21st

Answer time of this classApril 21st, 8 AM - March 22st, 4 PM (UTC+0).


Class topic

Post 1. Transmission Control Protocol (TCP)

If you are a network enthusiast or network engineer, you need to be familiar with TCP packets, TCP connection (three-way handshake), and… More


Post 2. How Address Resolution Protocol (ARP) works?

ARP(Address Resolution Protocol) is a TCP/IP protocol that obtains data link layer addresses based on IP addresses… More


Post 3. What is the difference between F5G and 5G?

F5G is the fifth generation of the fixed network. F5G provides ultra-high bandwidth, complete optical infrastructure, high service reliability, and the introduction of new services… More


Post 4. Basic OLT Operations

The out-band management mode uses non-service channels to transmit management information, separating the management channel from the service channel… More


Post 5. Basic ONU Operations

ONUs includes MDUs and ONTs. MDUs are added in SNMP management mode, and ONTs are added in OMCI management mode. Different types of ONUs need to… More



Class Q&As

After attending this class, please answer all the following questions and submit them. Once submitted, the answer cannot be modified.



    *1. Which layer of the TCP/IP protocol stack is TCP? (Single choice)

  • A. Application layer
  • B. Physical layer
  • C. Network layer
  • D. Transport layer

    *2. ARP is a basic IPv4 protocol. Which of the following features does it provide? (Multiple choices)

  • A. Resolve the IP address to the MAC address.
  • B. Limit network traffic and improve network performance
  • C. Detection of duplicate IP addresses in a network segment.
  • D. Maintains the cache of the mapping between IP addresses and MAC addresses, that is, ARP entries.

    *3. There are three groups of F5G features, namely: (Single choice)

  • A. Enhanced Fixed Broadband (eFBB),
  • B. Full Fiber Connection (FFC) and
  • C. Guaranteed Reliable Experience (GRE).
  • D. All of the above

    *4. How to prevent unauthorized users from logging in to the device? (Multiple choices)

  • A. Enable the firewall.
  • B. Setting the ACL
  • C. Set the forwarding policy according to the source address and destination address of the IP packet.
  • D. Configure the access mode and network Segment

    *5. The ONU mainly implements the following functions: (Multiple choices)

  • A. Sending the data in the upstream direction in the sending window allocated by the OLT.
  • B. Responding to the management command sent by the OLT performing the corresponding adjustment.
  • C. Buffering the Ethernet data of the user.
  • D. Selectively receiving the data sent by OLT.
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