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Questions and Answers
What is the definition of a network topology?
What is the definition of a network topology?
A network topology refers to the arrangement of different elements like nodes, links, or devices in a computer network.
Which of the following are concepts of network topology?
Which of the following are concepts of network topology?
Physical topology is the actual arrangement of devices and cables within a network.
Physical topology is the actual arrangement of devices and cables within a network.
True
Logical topology presents more on how data flows within a network and the path it travels between devices.
Logical topology presents more on how data flows within a network and the path it travels between devices.
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In a Point-to-Point topology, there is a direct connection between:
In a Point-to-Point topology, there is a direct connection between:
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What is a central device in a Point-to-Multipoint topology?
What is a central device in a Point-to-Multipoint topology?
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What is the name given to the single, continuous cable used in Bus topology?
What is the name given to the single, continuous cable used in Bus topology?
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Bus topology is fault tolerant meaning that if one device fails, the entire network is unaffected.
Bus topology is fault tolerant meaning that if one device fails, the entire network is unaffected.
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Which type of network topology is considered to have minimal impact to outages?
Which type of network topology is considered to have minimal impact to outages?
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Which of the following is a drawback of Star topology?
Which of the following is a drawback of Star topology?
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In Ring topology, data travels from one device to another until it returns to the source.
In Ring topology, data travels from one device to another until it returns to the source.
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Ring topology is very robust to hardware failures and can withstand a malfunctioning device without disrupting the network.
Ring topology is very robust to hardware failures and can withstand a malfunctioning device without disrupting the network.
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What is the main benefit of Mesh topology?
What is the main benefit of Mesh topology?
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What drawback does Mesh topology have?
What drawback does Mesh topology have?
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What is the primary characteristic of Hybrid topology?
What is the primary characteristic of Hybrid topology?
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Why is Hybrid topology useful?
Why is Hybrid topology useful?
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Which of these is NOT a factor to consider when designing a network topology?
Which of these is NOT a factor to consider when designing a network topology?
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What topology is best suited for small, cost-effective setups?
What topology is best suited for small, cost-effective setups?
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Which topology is considered ideal for high-availability systems with maximum uptime, despite being more expensive?
Which topology is considered ideal for high-availability systems with maximum uptime, despite being more expensive?
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What is the role of the backbone in a network?
What is the role of the backbone in a network?
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What are segments in a network?
What are segments in a network?
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You need a scalable topology for your network. Which one should you choose?
You need a scalable topology for your network. Which one should you choose?
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A point-to-multipoint network is best for:
A point-to-multipoint network is best for:
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Which topology has the greatest number of physical connections?
Which topology has the greatest number of physical connections?
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Which is an example of a hybrid network?
Which is an example of a hybrid network?
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You want to connect multiple LANs in a way that keeps them separate but allows them to access the internet. What is the best solution?
You want to connect multiple LANs in a way that keeps them separate but allows them to access the internet. What is the best solution?
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Study Notes
Network Topologies
- Network topology refers to the arrangement of nodes, links, or devices in a computer network
- Two concepts of network topology:
- Physical: the actual arrangement and placement of all workstations, devices, and physical media (e.g., cables) within the network
- Logical: how data flows within a network and the path it travels between devices
Physical Network Topology
- Describes the physical connections between devices
- Types of physical topologies:
- Point-to-Point: a direct connection between two devices, providing a single communication path (e.g., serial connection between routers)
- Point-to-Multipoint: one central device (e.g., router) connects to multiple other devices, creating a single connection from the central device to various endpoints (e.g., corporate router connecting to multiple branches)
- Bus: devices are connected to a single, continuous cable (called the "bus"). Data is sent across this cable, and only the addressed device can access it. Pros: minimal cabling, cheap to install. Cons: not fault tolerant.
- Star (Hub-and-Spoke): all devices are connected to a central intermediary device (e.g., hub or switch). Pros: minimal impact to outages. Cons: dependent on the intermediary device.
- Ring: each computer is directly connected to the next, forming a continuous loop. Data travels from one device to another until it returns to the source. Prone to disruption if a device is added or removed.
- Mesh: each device is connected to every other device, providing multiple paths for data. Pros: fault tolerant. Cons: high cost due to cabling necessity (full mesh vs partial mesh)
- Hybrid: combines two or more different types of network topologies within the same network, each containing its own nodes.
Backbone and Network Segment
- Backbone: network segments and servers connect to give the network its structure
- Segment: any small section of the network that connects to the backbone
Takeaways for Designing a Network Topology
- Cost: Consider the setup and maintenance expenses
- Fault Tolerance: Evaluate the needed reliability and uptime
- Scalability: Assess future network growth and reconfiguration ease
- Security: Determine the required security level
Knowledge Check Questions and Answers
- Scalable topology: Star, Mesh
- Point-to-Multipoint network use case: A centralized office needing to communicate with many branch offices.
- Topology with most connections: Mesh
- Example of a hybrid network: Ethernet switch
- Connecting multiple LANs to the internet: Install a router
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Description
This quiz explores the various network topologies, focusing on both physical and logical arrangements of devices. Understand the distinct types of physical topologies, such as point-to-point, point-to-multipoint, and bus configurations. Test your knowledge on how these arrangements impact data flow within a network.
