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Layer 2 Switching Quiz
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Layer 2 Switching Quiz

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Questions and Answers

What layer does a network switch operate at?

  • Layer 3
  • Layer 1
  • Layer 4
  • Layer 2 (correct)

    • How does a network switch manage traffic?

  • Based on domain names
  • Based on port numbers
  • Based on IP addresses
  • Based on MAC addresses (correct)

    • What is the function of a router in a switched network design?

  • Creates logical segmentation (correct)
  • Handles MAC address mapping
  • Manages VLAN tagging
  • Reduces collision domains

    • What is the primary advantage of Layer 2 switching?

    <p>Reduced collision domains</p> Signup and view all the answers

    What is the purpose of VLANs in a network?

    <p>To create logical segmentation</p> Signup and view all the answers

    How does a router differ from a network switch?

    <p>Routers manage traffic based on MAC addresses, switches based on IP addresses</p> Signup and view all the answers

    What is the role of a trunk port in VLANs?

    <p>To connect devices in different VLANs</p> Signup and view all the answers

    What does VLAN tagging enable?

    <p>Inter-VLAN communication</p> Signup and view all the answers

    Which layer of the OSI model does a router operate at?

    <p>Layer 3</p> Signup and view all the answers

    What is the function of a network switch?

    <p>Handles logical segmentation</p> Signup and view all the answers

    What is the primary purpose of a router in a network?

    <p>Routes traffic between different networks</p> Signup and view all the answers

    What does Layer 2 switching not modify in a data packet?

    <p>Data payload</p> Signup and view all the answers

    What is the main purpose of VLANs?

    <p>To logically segment a network into separate broadcast domains</p> Signup and view all the answers

    Which protocol helps prevent switching loops in redundant network designs?

    <p>Spanning Tree Protocol (STP)</p> Signup and view all the answers

    What is the purpose of a trunk port in a Layer 2 switch?

    <p>To carry frames for multiple VLANs and tag frames with the appropriate VLAN ID</p> Signup and view all the answers

    What is the IEEE standard that supports VLAN tagging on Ethernet networks?

    <p>802.1Q Protocol</p> Signup and view all the answers

    What is the purpose of access ports in a Layer 2 switch?

    <p>To belong to a VLAN and not tag the outgoing frames</p> Signup and view all the answers

    What is the primary function of Layer 2 switching?

    <p>MAC Address Learning</p> Signup and view all the answers

    What is the purpose of the Forwarding/Filter Table in Layer 2 switching?

    <p>To store the source hardware address of each frame and the corresponding port</p> Signup and view all the answers

    What is the role of a Layer 3 device in inter-VLAN communication?

    <p>To allow communication between VLANs</p> Signup and view all the answers

    What is the purpose of 802.1Q VLAN tagging?

    <p>To help switches identify which VLAN a frame belongs to and forward it accordingly</p> Signup and view all the answers

    What are the benefits of VLANs?

    <p>Enhanced Network Security, Scalability, and Improved Network Performance</p> Signup and view all the answers

    What is the purpose of the Spanning Tree Protocol (STP)?

    <p>To prevent loops in a network</p> Signup and view all the answers

    What is the process of setting up VLANs on a Layer 2 switch?

    <p>Creating the VLAN, assigning interfaces as Access Ports, and assigning interfaces as Trunk Ports</p> Signup and view all the answers

    Layer 2 switching operates at the Data Link Layer of the OSI model

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

    VLANs can be set up using both access ports and trunk ports

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

    VLAN tagging is used to identify which VLAN a data packet belongs to

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

    Layer 2 switching involves modifying the data packet to improve efficiency

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

    A router creates and handles logical segmentation in a switched network design

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

    Layer 2 switching is efficient because it does not modify the data packet

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

    A network switch manages traffic based on MAC addresses

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

    A complete switched network design includes the implementation of a router

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

    Switches reduce collision domains by creating separate collision domains for each port

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

    VLANs enable logical segmentation of a network

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

    A router is a Layer 3 device in a network

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

    VLAN tagging is an IEEE standard that supports VLAN identification on Ethernet networks

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

    Layer 2 switching operates at the network layer of the OSI model

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

    VLAN stands for Virtual Local Area Network

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

    Layer 2 switches can perform inter-VLAN routing without the need for a Layer 3 device

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

    802.1Q is an IEEE standard that supports VLAN tagging on Ethernet networks

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

    Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID

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

    VLAN tagging adds a tag to the Ethernet frame denoting its VLAN ID when frames traverse a trunk link

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

    It's best practice to reserve all VLAN IDs for future use

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

    A network switch can prevent switching loops using the Spanning Tree Protocol (STP)

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

    Access ports in Layer 2 switches belong to a VLAN and tag the outgoing frames

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

    Layer 3 switches are not required for inter-VLAN communication in a network

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

    The primary function of Layer 2 switching is to forward/filter decisions based on MAC addresses

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

    Layer 2 switches create a loop-free logical topology using the Spanning Tree Protocol (STP)

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

    Explain the three main functions of Layer 2 switching mentioned in the text.

    <p>The three main functions of Layer 2 switching mentioned in the text are MAC address learning, forward/filter decisions, and loop avoidance.</p> Signup and view all the answers

    What is the purpose of VLANs?

    <p>The purpose of VLANs is to create logical segmentation within a network, with each VLAN operating as its own broadcast domain.</p> Signup and view all the answers

    What are the benefits of VLANs mentioned in the text?

    <p>The benefits of VLANs mentioned in the text include enhanced network security, scalability, and improved network performance due to smaller broadcast domains.</p> Signup and view all the answers

    What is the main limitation of Layer 2 switches in terms of inter-VLAN communication?

    <p>The main limitation of Layer 2 switches in terms of inter-VLAN communication is the lack of support for inter-VLAN routing. To allow communication between VLANs, a Layer 3 device, such as a router or Layer 3 switch, is needed.</p> Signup and view all the answers

    What are the three steps involved in configuring VLANs on a Layer 2 switch?

    <p>The three steps involved in configuring VLANs on a Layer 2 switch are creating the VLAN, assigning interfaces as access ports, and assigning interfaces as trunk ports.</p> Signup and view all the answers

    What is the difference between access ports and trunk ports in a Layer 2 switch?

    <p>Access ports belong to a single VLAN and do not tag outgoing frames, while trunk ports can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID.</p> Signup and view all the answers

    What is the purpose of VLAN tagging and the 802.1Q protocol mentioned in the text?

    <p>The purpose of VLAN tagging and the 802.1Q protocol is to support VLAN identification on Ethernet networks by adding a tag to the Ethernet frame denoting its VLAN ID when frames traverse a trunk link.</p> Signup and view all the answers

    What are the best practices mentioned for VLANs in the text?

    <p>The best practices mentioned for VLANs include reserving a few VLAN IDs for future use, setting descriptive names for VLANs, isolating all unused ports and putting them in an unused VLAN, and setting a native VLAN that's different from user VLANs.</p> Signup and view all the answers

    What are the commands involved in setting up a VLAN, setting access ports, and setting up trunk ports on a Layer 2 switch?

    <p>The commands involved in setting up a VLAN, setting access ports, and setting up trunk ports on a Layer 2 switch include 'vlan' for creating VLAN, 'switchport access vlan' for setting access ports, and 'switchport mode trunk' for setting up trunk ports.</p> Signup and view all the answers

    What is the IEEE standard that supports VLAN tagging on Ethernet networks?

    <p>The IEEE standard that supports VLAN tagging on Ethernet networks is 802.1Q.</p> Signup and view all the answers

    What is the primary function of the Spanning Tree Protocol (STP) mentioned in the text?

    <p>The primary function of the Spanning Tree Protocol (STP) mentioned in the text is to prevent switching loops by creating a loop-free logical topology in redundant network designs.</p> Signup and view all the answers

    What is the role of Layer 3 devices in inter-VLAN communication according to the text?

    <p>The role of Layer 3 devices in inter-VLAN communication according to the text is to allow communication between VLANs by performing inter-VLAN routing.</p> Signup and view all the answers

    What layer does a network switch operate at?

    <p>A network switch operates at Layer 2 (Data Link Layer) of the OSI model.</p> Signup and view all the answers

    What is the primary function of Layer 2 switching?

    <p>The primary function of Layer 2 switching is to forward/filter decisions based on MAC addresses.</p> Signup and view all the answers

    What is the purpose of VLAN tagging?

    <p>VLAN tagging is used to identify which VLAN a data packet belongs to.</p> Signup and view all the answers

    How does a network switch manage traffic?

    <p>A network switch manages traffic based on MAC addresses.</p> Signup and view all the answers

    What makes Layer 2 switching so efficient?

    <p>What makes Layer 2 switching so efficient is that no modification to the data packet takes place.</p> Signup and view all the answers

    What is the process of setting up VLANs on a Layer 2 switch?

    <p>Understand commands for setting up VLANs.</p> Signup and view all the answers

    What are the benefits of VLANs?

    <p>VLANs enable logical segmentation of a network and can improve network security and performance.</p> Signup and view all the answers

    What is the purpose of access ports in a Layer 2 switch?

    <p>Access ports in Layer 2 switches belong to a VLAN and tag the outgoing frames.</p> Signup and view all the answers

    What is the purpose of the Spanning Tree Protocol (STP)?

    <p>The Spanning Tree Protocol (STP) helps prevent switching loops in redundant network designs.</p> Signup and view all the answers

    What is the role of a trunk port in VLANs?

    <p>Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID.</p> Signup and view all the answers

    What is the function of a router in a switched network design?

    <p>A router creates and handles logical segmentation, and can provide inter-VLAN communication.</p> Signup and view all the answers

    What is the purpose of logical segmentation in a switched network design?

    <p>Logical segmentation helps in organizing and securing the network, and allows for efficient traffic management.</p> Signup and view all the answers

    ______ stands for Virtual Local Area Network

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

    ______ is an IEEE standard that supports VLAN tagging on Ethernet networks

    <p>802.1Q</p> Signup and view all the answers

    When frames traverse a trunk link, a ______ is added to the Ethernet frame, denoting its VLAN ID. This helps switches identify which VLAN a frame belongs to and forward it accordingly

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

    In redundant network designs, loops can cause issues. ______ (Spanning Tree Protocol) is a protocol that helps prevent loops by creating a loop-free logical topology

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

    To allow communication between VLANs, a Layer 3 device, like a ______ or Layer 3 switch, is needed

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

    ______ loops can occur if you have more than one path to a destination

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

    VLANs can be isolated and can restrict access by VLAN

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

    Belong to a VLAN and do not tag the outgoing frames. They're used to connect end devices like PCs and printers

    <p>Access Ports</p> Signup and view all the answers

    They can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID. They're used to connect switches to each other

    <p>Trunk Ports</p> Signup and view all the answers

    An IEEE standard that supports VLAN tagging on Ethernet networks. It's responsible for adding a tag to the original frame when it goes out on a trunk link and removing the tag when it enters an access link

    <p>802.1Q Protocol</p> Signup and view all the answers

    Reserve a few VLAN IDs for ______ use

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

    On a Layer 2 switch, ______ are separate broadcast domains

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

    Setting up VLANs on a Layer 2 switch is a three-step ______

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

    Layer 2 switching operates at the ________ layer of the OSI model

    <p>Data Link</p> Signup and view all the answers

    VLAN stands for ________ Local Area Network

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

    What makes Layer 2 switching so efficient is that no ________ to the data packet takes place

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

    A network switch manages traffic based on ________ addresses

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

    Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ________

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

    The router creates and handles ________ segmentation

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

    A network switch is a device that connects devices within a ________ area network (LAN)

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

    Switches reduce collision domains by creating separate collision domains for each ________

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

    VLAN tagging is used to identify which VLAN a data packet ________ to

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

    A typical, contemporary, and complete switched network design/implementation would include the implementation of a ________

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

    VLANs including access ports and trunk ports are covered in the context of ________

    <p>NTWK8021</p> Signup and view all the answers

    Layer 3 switches are not required for inter-VLAN communication in a ________

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

    Study Notes

    Network Switches and VLANs

    • Network switches operate at the Data Link Layer (Layer 2) of the OSI model.
    • Switches manage traffic based on MAC addresses.

    VLANs

    • VLANs (Virtual Local Area Networks) enable logical segmentation of a network.
    • VLANs can be set up using both access ports and trunk ports.
    • VLAN tagging is used to identify which VLAN a data packet belongs to.

    Trunk Ports and Access Ports

    • Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID.
    • Access ports in Layer 2 switches belong to a VLAN and do not tag the outgoing frames.

    Layer 2 Switching

    • Layer 2 switching involves forwarding/filtering decisions based on MAC addresses.
    • Layer 2 switching is efficient because it does not modify the data packet.
    • The primary function of Layer 2 switching is to forward/filter decisions based on MAC addresses.

    Routers and Inter-VLAN Communication

    • Routers operate at Layer 3 of the OSI model.
    • Layer 3 devices are required for inter-VLAN communication in a network.
    • Routers create and handle logical segmentation in a switched network design.

    Spanning Tree Protocol (STP)

    • STP is a protocol that helps prevent switching loops in redundant network designs.
    • STP creates a loop-free logical topology.

    VLAN Tagging and 802.1Q

    • 802.1Q is an IEEE standard that supports VLAN tagging on Ethernet networks.
    • VLAN tagging adds a tag to the Ethernet frame denoting its VLAN ID when frames traverse a trunk link.

    Best Practices and Configuration

    • Reserve a few VLAN IDs for future use.
    • Setting up VLANs on a Layer 2 switch involves three steps: creating the VLAN, assigning access ports, and configuring trunk ports.

    Key Concepts

    • VLANs enable logical segmentation of a network.
    • Layer 2 switching operates at the Data Link Layer of the OSI model.
    • Routers operate at Layer 3 of the OSI model.
    • Trunk ports carry frames for multiple VLANs and tag frames with the appropriate VLAN ID.

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