Networking Switching and Forwarding Frames Quiz
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Questions and Answers

What term is used to describe the port where a frame enters the device?

  • Switching
  • Ingress (correct)
  • Forwarding
  • Egress

    • What is the primary intelligence of a LAN switch based on?

  • Ingress port and destination MAC address (correct)
  • Ingress port and source MAC address
  • Source MAC address
  • Destination IP address

    • How does a LAN switch forward traffic?

  • Based only on the destination MAC address
  • Based on the ingress port and source MAC address
  • Based on the ingress port and destination MAC address (correct)
  • Based only on the source MAC address

    • What type of table does a LAN switch maintain?

    <p>MAC address table</p> Signup and view all the answers

    What are switches made up of?

    <p>Integrated circuits and accompanying software</p> Signup and view all the answers

    What type of memory is used to store the MAC address table in a switch?

    <p>Content addressable memory (CAM)</p> Signup and view all the answers

    How does a switch populate its MAC address table?

    <p>By recording the source MAC address of each device connected to each port</p> Signup and view all the answers

    What does a switch do if the destination MAC address is not in its MAC address table?

    <p>It forwards the frame out of all ports except the incoming port</p> Signup and view all the answers

    What happens if the source MAC address exists in the MAC address table but on a different port?

    <p>The switch treats this as a new entry and replaces it with the more current port number</p> Signup and view all the answers

    What does the switch do when examining the destination MAC address if it is a unicast address?

    <p>It looks for a match in its MAC address table and forwards the frame out of the specified port</p> Signup and view all the answers

    What is the purpose of the MAC address table stored in content addressable memory (CAM) in a switch?

    <p>To maintain a record of the source MAC addresses and their corresponding port numbers</p> Signup and view all the answers

    What term is used to describe the port that frames will use when leaving the device?

    <p>Egress</p> Signup and view all the answers

    What happens if a new frame enters a switch with a source MAC address that already exists in the MAC address table, but on a different port?

    <p>The entry for that MAC address is updated with the new port number</p> Signup and view all the answers

    What is the primary intelligence of a LAN switch based on?

    <p>Forwarding table complexity</p> Signup and view all the answers

    What happens if the destination MAC address of an incoming frame is not in the MAC address table of the switch?

    <p>The switch forwards the frame out of all ports except the incoming port</p> Signup and view all the answers

    Which term describes the process of examining the source MAC address of an incoming frame to update or add an entry in the MAC address table?

    <p>MAC learning</p> Signup and view all the answers

    What does a LAN switch use to direct network communications through the switch?

    <p>Destination MAC addresses</p> Signup and view all the answers

    What does a switch do when examining the destination MAC address if it is a unicast address and not found in its MAC address table?

    <p>The switch forwards the frame out of all ports except the incoming port</p> Signup and view all the answers

    How does a LAN switch forward traffic?

    <p>Based on the ingress port and destination MAC address</p> Signup and view all the answers

    What type of memory is used to store the MAC address table in a switch?

    <p>RAM</p> Signup and view all the answers

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