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Questions and Answers
What layer does a network switch operate at?
What layer does a network switch operate at?
- Layer 3
- Layer 1
- Layer 4
- Layer 2 (correct)
How does a network switch manage traffic?
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?
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?
What is the primary advantage of Layer 2 switching?
What is the purpose of VLANs in a network?
What is the purpose of VLANs in a network?
How does a router differ from a network switch?
How does a router differ from a network switch?
What is the role of a trunk port in VLANs?
What is the role of a trunk port in VLANs?
What does VLAN tagging enable?
What does VLAN tagging enable?
Which layer of the OSI model does a router operate at?
Which layer of the OSI model does a router operate at?
What is the function of a network switch?
What is the function of a network switch?
What is the primary purpose of a router in a network?
What is the primary purpose of a router in a network?
What does Layer 2 switching not modify in a data packet?
What does Layer 2 switching not modify in a data packet?
What is the main purpose of VLANs?
What is the main purpose of VLANs?
Which protocol helps prevent switching loops in redundant network designs?
Which protocol helps prevent switching loops in redundant network designs?
What is the purpose of a trunk port in a Layer 2 switch?
What is the purpose of a trunk port in a Layer 2 switch?
What is the IEEE standard that supports VLAN tagging on Ethernet networks?
What is the IEEE standard that supports VLAN tagging on Ethernet networks?
What is the purpose of access ports in a Layer 2 switch?
What is the purpose of access ports in a Layer 2 switch?
What is the primary function of Layer 2 switching?
What is the primary function of Layer 2 switching?
What is the purpose of the Forwarding/Filter Table in Layer 2 switching?
What is the purpose of the Forwarding/Filter Table in Layer 2 switching?
What is the role of a Layer 3 device in inter-VLAN communication?
What is the role of a Layer 3 device in inter-VLAN communication?
What is the purpose of 802.1Q VLAN tagging?
What is the purpose of 802.1Q VLAN tagging?
What are the benefits of VLANs?
What are the benefits of VLANs?
What is the purpose of the Spanning Tree Protocol (STP)?
What is the purpose of the Spanning Tree Protocol (STP)?
What is the process of setting up VLANs on a Layer 2 switch?
What is the process of setting up VLANs on a Layer 2 switch?
Layer 2 switching operates at the Data Link Layer of the OSI model
Layer 2 switching operates at the Data Link Layer of the OSI model
VLANs can be set up using both access ports and trunk ports
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
VLAN tagging is used to identify which VLAN a data packet belongs to
Layer 2 switching involves modifying the data packet to improve efficiency
Layer 2 switching involves modifying the data packet to improve efficiency
A router creates and handles logical segmentation in a switched network design
A router creates and handles logical segmentation in a switched network design
Layer 2 switching is efficient because it does not modify the data packet
Layer 2 switching is efficient because it does not modify the data packet
A network switch manages traffic based on MAC addresses
A network switch manages traffic based on MAC addresses
A complete switched network design includes the implementation of a router
A complete switched network design includes the implementation of a router
Switches reduce collision domains by creating separate collision domains for each port
Switches reduce collision domains by creating separate collision domains for each port
VLANs enable logical segmentation of a network
VLANs enable logical segmentation of a network
A router is a Layer 3 device in a network
A router is a Layer 3 device in a network
VLAN tagging is an IEEE standard that supports VLAN identification on Ethernet networks
VLAN tagging is an IEEE standard that supports VLAN identification on Ethernet networks
Layer 2 switching operates at the network layer of the OSI model
Layer 2 switching operates at the network layer of the OSI model
VLAN stands for Virtual Local Area Network
VLAN stands for Virtual Local Area Network
Layer 2 switches can perform inter-VLAN routing without the need for a Layer 3 device
Layer 2 switches can perform inter-VLAN routing without the need for a Layer 3 device
802.1Q is an IEEE standard that supports VLAN tagging on Ethernet networks
802.1Q is an IEEE standard that supports VLAN tagging on Ethernet networks
Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID
Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID
VLAN tagging adds a tag to the Ethernet frame denoting its VLAN ID when frames traverse a trunk link
VLAN tagging adds a tag to the Ethernet frame denoting its VLAN ID when frames traverse a trunk link
It's best practice to reserve all VLAN IDs for future use
It's best practice to reserve all VLAN IDs for future use
A network switch can prevent switching loops using the Spanning Tree Protocol (STP)
A network switch can prevent switching loops using the Spanning Tree Protocol (STP)
Access ports in Layer 2 switches belong to a VLAN and tag the outgoing frames
Access ports in Layer 2 switches belong to a VLAN and tag the outgoing frames
Layer 3 switches are not required for inter-VLAN communication in a network
Layer 3 switches are not required for inter-VLAN communication in a network
The primary function of Layer 2 switching is to forward/filter decisions based on MAC addresses
The primary function of Layer 2 switching is to forward/filter decisions based on MAC addresses
Layer 2 switches create a loop-free logical topology using the Spanning Tree Protocol (STP)
Layer 2 switches create a loop-free logical topology using the Spanning Tree Protocol (STP)
Explain the three main functions of Layer 2 switching mentioned in the text.
Explain the three main functions of Layer 2 switching mentioned in the text.
What is the purpose of VLANs?
What is the purpose of VLANs?
What are the benefits of VLANs mentioned in the text?
What are the benefits of VLANs mentioned in the text?
What is the main limitation of Layer 2 switches in terms of inter-VLAN communication?
What is the main limitation of Layer 2 switches in terms of inter-VLAN communication?
What are the three steps involved in configuring VLANs on a Layer 2 switch?
What are the three steps involved in configuring VLANs on a Layer 2 switch?
What is the difference between access ports and trunk ports in a Layer 2 switch?
What is the difference between access ports and trunk ports in a Layer 2 switch?
What is the purpose of VLAN tagging and the 802.1Q protocol mentioned in the text?
What is the purpose of VLAN tagging and the 802.1Q protocol mentioned in the text?
What are the best practices mentioned for VLANs in the text?
What are the best practices mentioned for VLANs in the text?
What are the commands involved in setting up a VLAN, setting access ports, and setting up trunk ports on a Layer 2 switch?
What are the commands involved in setting up a VLAN, setting access ports, and setting up trunk ports on a Layer 2 switch?
What is the IEEE standard that supports VLAN tagging on Ethernet networks?
What is the IEEE standard that supports VLAN tagging on Ethernet networks?
What is the primary function of the Spanning Tree Protocol (STP) mentioned in the text?
What is the primary function of the Spanning Tree Protocol (STP) mentioned in the text?
What is the role of Layer 3 devices in inter-VLAN communication according to the text?
What is the role of Layer 3 devices in inter-VLAN communication according to the text?
What layer does a network switch operate at?
What layer does a network switch operate at?
What is the primary function of Layer 2 switching?
What is the primary function of Layer 2 switching?
What is the purpose of VLAN tagging?
What is the purpose of VLAN tagging?
How does a network switch manage traffic?
How does a network switch manage traffic?
What makes Layer 2 switching so efficient?
What makes Layer 2 switching so efficient?
What is the process of setting up VLANs on a Layer 2 switch?
What is the process of setting up VLANs on a Layer 2 switch?
What are the benefits of VLANs?
What are the benefits of VLANs?
What is the purpose of access ports in a Layer 2 switch?
What is the purpose of access ports in a Layer 2 switch?
What is the purpose of the Spanning Tree Protocol (STP)?
What is the purpose of the Spanning Tree Protocol (STP)?
What is the role of a trunk port in VLANs?
What is the role of a trunk port in VLANs?
What is the function of a router in a switched network design?
What is the function of a router in a switched network design?
What is the purpose of logical segmentation in a switched network design?
What is the purpose of logical segmentation in a switched network design?
______ stands for Virtual Local Area Network
______ stands for Virtual Local Area Network
______ is an IEEE standard that supports VLAN tagging on Ethernet networks
______ is an IEEE standard that supports VLAN tagging on Ethernet networks
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
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
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
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
To allow communication between VLANs, a Layer 3 device, like a ______ or Layer 3 switch, is needed
To allow communication between VLANs, a Layer 3 device, like a ______ or Layer 3 switch, is needed
______ loops can occur if you have more than one path to a destination
______ loops can occur if you have more than one path to a destination
VLANs can be isolated and can restrict access by VLAN
VLANs can be isolated and can restrict access by VLAN
Belong to a VLAN and do not tag the outgoing frames. They're used to connect end devices like PCs and printers
Belong to a VLAN and do not tag the outgoing frames. They're used to connect end devices like PCs and printers
They can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID. They're used to connect switches to each other
They can carry frames for multiple VLANs and tag frames with the appropriate VLAN ID. They're used to connect switches to each other
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
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
Reserve a few VLAN IDs for ______ use
Reserve a few VLAN IDs for ______ use
On a Layer 2 switch, ______ are separate broadcast domains
On a Layer 2 switch, ______ are separate broadcast domains
Setting up VLANs on a Layer 2 switch is a three-step ______
Setting up VLANs on a Layer 2 switch is a three-step ______
Layer 2 switching operates at the ________ layer of the OSI model
Layer 2 switching operates at the ________ layer of the OSI model
VLAN stands for ________ Local Area Network
VLAN stands for ________ Local Area Network
What makes Layer 2 switching so efficient is that no ________ to the data packet takes place
What makes Layer 2 switching so efficient is that no ________ to the data packet takes place
A network switch manages traffic based on ________ addresses
A network switch manages traffic based on ________ addresses
Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ________
Trunk ports in Layer 2 switches can carry frames for multiple VLANs and tag frames with the appropriate VLAN ________
The router creates and handles ________ segmentation
The router creates and handles ________ segmentation
A network switch is a device that connects devices within a ________ area network (LAN)
A network switch is a device that connects devices within a ________ area network (LAN)
Switches reduce collision domains by creating separate collision domains for each ________
Switches reduce collision domains by creating separate collision domains for each ________
VLAN tagging is used to identify which VLAN a data packet ________ to
VLAN tagging is used to identify which VLAN a data packet ________ to
A typical, contemporary, and complete switched network design/implementation would include the implementation of a ________
A typical, contemporary, and complete switched network design/implementation would include the implementation of a ________
VLANs including access ports and trunk ports are covered in the context of ________
VLANs including access ports and trunk ports are covered in the context of ________
Layer 3 switches are not required for inter-VLAN communication in a ________
Layer 3 switches are not required for inter-VLAN communication in a ________
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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Description
Test your knowledge of Layer 2 switching with this quiz on MAC address learning, forwarding/filter decisions, and loop avoidance. Challenge yourself to understand how switches handle communication between hosts and how they build and use the forwarding/filter table.
