OSPF Configuration and Troubleshooting: 20 Key Questions

Posted by on Feb 9, 2025 in Telecommunication and Multimedia Engineering | 0 comments

  1. Which OSPF network type requires the election of a DR/BDR?

    Broadcast

  2. In an OSPF hub-and-spoke topology, what needs to be done to ensure that the spoke routers are never selected as DR and BDR?

    All spoke routers need to be configured with an OSPF interface priority of 0 (ip ospf priority) so that they will not become the DR/BDR.

  3. How to configure OSPF to advertise specific routes?

    A network administrator is implementing OSPF in a portion of the network and must ensure that only specific routes are advertised

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Packet Switching: Datagrams and Virtual Circuits

Posted by on Jan 12, 2025 in Telecommunication and Multimedia Engineering | 0 comments

Packet Switching

Switching is a technique that helps us make efficient use of physical links in a network of computers. There are two basic techniques:

Datagram

  • Technical Datagram: Each packet fragment is sent with sufficient information, such that the network can simply route the fragment to the data terminal equipment.
  • Considered the most sensitive method.
  • No call setup phase.
  • The passing of data is more secure.
  • Not all packets follow the same route.
  • Packets can reach the destination in disarray because
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