Podcast
Questions and Answers
What is the primary advantage of Infrastructure Mode?
What is the primary advantage of Infrastructure Mode?
Which network architecture model provides wireless access to a local area network?
Which network architecture model provides wireless access to a local area network?
Which protocol set is used for wireless networking?
Which protocol set is used for wireless networking?
What is a characteristic of a Mesh Network?
What is a characteristic of a Mesh Network?
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Which device allows wireless devices to connect to a wired network?
Which device allows wireless devices to connect to a wired network?
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What is an example of a MAC protocol?
What is an example of a MAC protocol?
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Study Notes
Wireless Network Architecture
Basic Components
- Access Points (APs): devices that allow wireless devices to connect to a wired network
- Wireless Network Interface Cards (WNICs): devices installed in laptops, smartphones, and other devices to connect to a wireless network
- Wireless Routers: devices that connect to a wired network and provide wireless access to multiple devices
Network Topology
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Infrastructure Mode: wireless devices connect to an AP, which is connected to a wired network
- Advantages: easy to set up, provides centralized management
- Disadvantages: single point of failure, limited range
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Ad-Hoc Mode: wireless devices connect directly to each other without an AP
- Advantages: no need for AP, flexible
- Disadvantages: limited range, no centralized management
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Mesh Network: wireless devices connect to each other and to APs, providing multiple paths for data transmission
- Advantages: reliable, self-healing, flexible
- Disadvantages: complex setup, expensive
Network Architecture Models
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WLAN (Wireless Local Area Network) Architecture
- Consists of APs, WNICs, and wireless routers
- Provides wireless access to a local area network
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WWAN (Wireless Wide Area Network) Architecture
- Consists of cellular networks, satellite networks, and wireless routers
- Provides wireless access to a wide area network
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WMAN (Wireless Metropolitan Area Network) Architecture
- Consists of wireless routers, APs, and WNICs
- Provides wireless access to a metropolitan area network
Network Protocols
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IEEE 802.11: a set of standards for wireless networking
- Includes protocols for MAC (Media Access Control) and PHY (Physical Layer)
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MAC Protocols: manage data transmission and reception between devices
- Examples: CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance), RTS/CTS (Request to Send/Clear to Send)
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PHY Protocols: manage data transmission and reception at the physical layer
- Examples: DSSS (Direct Sequence Spread Spectrum), FHSS (Frequency Hopping Spread Spectrum)
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Description
Learn about the basic components, network topology, architecture models, and protocols used in wireless networks. Understand the advantages and disadvantages of different network topologies and architectures.
