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Questions and Answers
A bus topology connects all computers in a network using a single cable.
True
A hub or switch is required for a bus topology installation.
False
In a ring topology, packets are sent in a circle from one computer to another.
True
A termination is necessary to prevent signal reflection in a bus topology.
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A logical topology only describes the physical layout of network cables.
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If one computer fails in a true ring topology, the entire network remains operational.
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Bus topology is considered to be modern technology that is widely used today.
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Every computer in a ring topology must examine each packet to determine if it is intended for them.
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Routers are typically arranged in a way that provides only a single path between any two nodes in a wireless mesh topology.
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In infrastructure wireless topology, devices communicate through a central access point.
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Ad-hoc wireless topology requires a central access point for devices to communicate with each other.
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Wireless mesh topology is characterized by each device being connected to multiple other devices, forming a highly reliable network.
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Hybrid topology combines at least three different types of wireless topologies for better adaptability.
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Wireless topologies can significantly influence how data is transmitted within a network.
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The primary advantage of wireless topologies is their ability to maintain a direct connection at all times between nodes.
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Wireless topologies have no variations and follow a single structure for all network deployments.
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SANs only provide file-level operations.
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A personal-area network (PAN) is intended for use with devices that you personally own.
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Wireless personal-area networks (WPAN) do not utilize Bluetooth technology.
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A router connects two separate network segments and directs data between them.
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Switches send data to all connected devices regardless of the intended recipient.
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Routing is the process of transmitting data from one device to another within the same network.
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SANs do provide file abstraction to the operating systems of connected devices.
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The main purpose of WPAN is to facilitate the transfer of large files between devices.
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A WAN is faster than a LAN.
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A MAN is always larger than a LAN but smaller than a WAN.
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A WLAN uses wired communication to connect devices.
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A Campus-Area Network (CAN) can consist of multiple LANs within a defined area.
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All WANs require expensive and complicated implementation procedures.
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A storage-area network (SAN) is primarily used for networked/shared storage devices.
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A LAN can cover multiple geographic locations.
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A MAN is technically classified as a WAN.
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Routing occurs at the transport layer of the OSI model.
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Static routing is suitable for small networks with a changing topology.
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Dynamic routing protocols allow routers to automatically adjust their routing tables.
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Static routing requires routers to communicate with each other to update their routing tables.
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Dynamic routing is typically used in large, complex networks.
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In packet switching, data is sent as a single continuous stream.
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Static routing can be advantageous because it has lower overhead.
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Dynamic routing protocols are not necessary in enterprise networks.
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Study Notes
Network Topologies
- Definition: Network topology describes the physical and logical arrangement of computers and devices in a network.
- Physical Topology: Refers to the actual layout of network cables and devices.
- Logical Topology: Concerns how the network is perceived by the devices using it.
Wired Topologies
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Bus Topology:
- Connects all devices using a single backbone or trunk.
- Devices tap into the cable to access transmitted packets.
- Requires terminators at both ends to prevent signal reflection.
- Considered outdated, with no need for a hub or switch.
-
Ring Topology:
- Each device connects to two others, forming a circular pathway for data packets.
- If one device or segment fails, the entire network can be compromised.
- Also does not require a hub or switch.
Wireless Topologies
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Infrastructure Wireless Topology:
- Devices connect through a central device, like a wireless router.
- Common in home and office environments for internet access.
-
Ad Hoc Wireless Topology:
- Direct communication between devices without a central access point.
- Useful in temporary scenarios like meetings or small gatherings.
-
Wireless Mesh Topology:
- All devices are interconnected, allowing multiple communication paths.
- Highly reliable as communication can be rerouted if one node fails.
-
Hybrid Topology:
- Combines various wireless topologies for flexibility and resilience.
- Example includes a mix of point-to-point and mesh networks.
Geographical Network Types
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Local Area Network (LAN):
- Operates within a limited geographic area, such as an office or school.
-
Wireless Local Area Network (WLAN):
- A LAN that uses wireless technology.
-
Wide Area Network (WAN):
- Covers a large area; connects multiple LANs.
- Slower than LANs, requiring more complex and expensive hardware.
-
Metropolitan Area Network (MAN):
- Serves a specific geographic area like a city.
- Larger than a LAN, smaller than a WAN.
-
Campus Area Network (CAN):
- Connects multiple LANs within a defined area, such as a university campus.
-
Storage Area Network (SAN):
- Connects shared storage devices, offering block-level data storage.
-
Personal Area Network (PAN):
- For personal devices like smartphones and tablets, often using Bluetooth or NFC.
Router & Switch Devices
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Router:
- Connects different network segments, directing data between them.
- Example: Home router linking a user to the internet.
-
Switch:
- Connects multiple computers within a network via cables.
- Forwards data only to the relevant port based on MAC addresses.
Routing
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Definition: The process of directing data packets between networks.
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Router Role: Makes decisions on the most efficient data paths at the network layer.
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Static Routing:
- Manually configured routing tables, suitable for stable networks.
- Simple but less adaptable to dynamic changes.
-
Dynamic Routing:
- Routers exchange information to automatically update routes.
- Efficient for large networks subject to frequent changes.
Switching Methods
-
Packet Switching:
- Breaks data into smaller packets for transmission, enhancing efficiency.
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Description
Test your knowledge on various network topologies including wired and wireless structures. This quiz covers bus and ring topologies, their configurations, and advantages. Learn about the physical and logical arrangements that are vital for effective networking.
