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    BMIT2164 T1 Switching Concept

    Uploaded by

    CHAI JIA LE HENRY
    This document provides an overview of computer networks and switch forwarding. It includes true/false questions about switch interfaces, MAC address tables, and broadcast domains. It also explains how switches build MAC tables and forward frames based on destination MAC addresses. Figures are included to illustrate switch forwarding and identify collision and broadcast domains for different network topologies. The document contrasts two switch forwarding methods and discusses consequences of connecting multiple switches like additional collision domains if devices operate in half-duplex mode.

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    BMIT2164 T1 Switching Concept

    Uploaded by

    CHAI JIA LE HENRY
    241 views4 pages
    This document provides an overview of computer networks and switch forwarding. It includes true/false questions about switch interfaces, MAC address tables, and broadcast domains. It also explains how switches build MAC tables and forward frames based on destination MAC addresses. Figures are included to illustrate switch forwarding and identify collision and broadcast domains for different network topologies. The document contrasts two switch forwarding methods and discusses consequences of connecting multiple switches like additional collision domains if devices operate in half-duplex mode.

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    This document provides an overview of computer networks and switch forwarding. It includes true/false questions about switch interfaces, MAC address tables, and broadcast domains. It also explains how switches build MAC tables and forward frames based on destination MAC addresses. Figures are included to illustrate switch forwarding and identify collision and broadcast domains for different network topologies. The document contrasts two switch forwarding methods and discusses consequences of connecting multiple switches like additional collision domains if devices operate in half-duplex mode.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    241 views4 pages

    BMIT2164 T1 Switching Concept

    Uploaded by

    CHAI JIA LE HENRY
    This document provides an overview of computer networks and switch forwarding. It includes true/false questions about switch interfaces, MAC address tables, and broadcast domains. It also explains how switches build MAC tables and forward frames based on destination MAC addresses. Figures are included to illustrate switch forwarding and identify collision and broadcast domains for different network topologies. The document contrasts two switch forwarding methods and discusses consequences of connecting multiple switches like additional collision domains if devices operate in half-duplex mode.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    BMIT2164 COMPUTER NETWORKS

    Tutorial 1

    1. True or False question. Circle the answer.


    a. Ingress interface is the interface where a frame entering the interface of a switch.
    (True/False)

    b. Egress interface is the interface where a frame leaving the interface of a switch.
    (True/False)

    c. A switch uses its MAC address table and routing table to make forwarding decisions.
    (True/False)

    d. A switch builds a MAC address table, also known as a Content Addressable Memory
    (CAM) table. (True/False)

    e. Switches use the MAC address table and full-duplex to eliminate broadcast domain and
    avoid congestion. (True/False)

    f. Only a layer 3 device (router) will break the broadcast domain. (True/False)

    2. “When a layer 2 switch makes a forwarding decision, it is based on the egress port and the
    destination IP address of the message.”
    Comment on the above statement.

    3. Explain how a switch builds its MAC address tables.

    4. Explain how switches forward frames based on the content of their MAC address tables.

    5. Answer the questions below by using the information provided in Figure 1.

    Figure 1: A switch forwarding diagram

    a) Where will the switch forward the frame? Circle the answer(s). (1 mark)
    Fa1 Fa2 Fa3 Fa4 Fa5 Fa6 Fa7 Fa8 Fa9 Fa10 Fa11 Fa12

    b) Explain the how the switch forwards the frame to the destination device(s) by using Figure 1.
    (5 marks)

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    BMIT2164 COMPUTER NETWORKS

    6. Answer the questions below by using the information provided in Figure 2.

    Figure 2: A switch forwarding diagram


    a) Where will the switch forward the frame? Circle the answer(s). (2 marks)
    Fa1 Fa2 Fa3 Fa4 Fa5 Fa6 Fa7 Fa8 Fa9 Fa10 Fa11 Fa12

    b) Explain how the switch forwards the frame to the destination device(s) by using Figure 1.
    (4 marks)

    7. Contrast and compare the TWO (2) switch forwarding methods.

    8. When there is one or more devices in half-duplex and there will now be a collision domain.
    Why this will happen?

    9. What is the duplex setting of the switches whereby the collision domains are eliminated and
    congestion is reduced?

    10. Differentiate collision domain for a hub and for a switch.

    11. What is a broadcast domain?

    12. What are the consequences of connecting many switches together?

    13. Based on the topology in Figure 1-2, identify the numbers of and circle the domains:

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    BMIT2164 COMPUTER NETWORKS

    a. Collision domains

    b. Broadcast domains

    Figure 1-2

    14. Based on the following figures, identify the collision domains and broadcast domains by
    circling the networks symbols in the diagrams. In addition, indicate how many collision
    domains and broadcast domains show in the following topology.

    a) Collision domains = ____________ (5 marks)

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    BMIT2164 COMPUTER NETWORKS

    Collision
    Domain

    b) Broadcast Domains = ______________ (5 marks)

    Broadcast
    Domain

    092020 4

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