Questions and Answers
What is the primary medium used in a wired network?
Which devices typically utilize wireless networks?
What distinguishes mobile technology from other forms of communication technology?
Which of the following is NOT a type of cable used in wired networks?
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In a wireless network, what allows devices to communicate?
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What type of network allows mobile devices to switch frequencies automatically across large areas?
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Which statement accurately describes Wi-fi networks?
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Which is a characteristic of Bluetooth technology?
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What is the primary difference between cellular networks and Wi-fi?
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What does Wi-fi stand for?
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Study Notes
Wired and Wireless Networks
- Wired networks utilize physical mediums such as copper wire, twisted pair, and fiber optic cables for device connections.
- Wireless networks communicate using electromagnetic or infrared waves, facilitating connections without physical wires.
- Common wireless devices include cellular phones, TVs, satellite receivers, and laptops equipped with WLAN cards.
Mobile Technology
- Mobile technology encompasses portable devices enabling two-way communication and computing linked through networks.
Types of Mobile Networks
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Cellular Networks:
- Employ distributed cell towers allowing seamless frequency switching and communication over extensive areas.
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Wi-Fi:
- Uses radio waves to provide internet connectivity via localized routers known as hotspots.
- Unlike cellular networks, Wi-Fi connections require user establishment for service access.
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Bluetooth:
- A specification for short-range device connectivity, utilizing short-wavelength radio waves for seamless pairing (e.g., headsets, speakers).
Mobile Network Generations
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1G (First Generation):
- Launched in the 1980s, it was the first analog-based mobile communication system.
- Data rates were limited to 2.4 kbps, primarily enabling voice calls with restricted capacity and coverage.
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2G (Second Generation):
- Emerged in the early 1990s, transitioning to digital cellular networks with GSM and CDMA technologies.
- Enhanced voice quality and introduced functionalities like SMS; data transfer rates improved to approximately 64 kbps.
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3G (Third Generation):
- Introduced in the early 2000s, allowing enhanced data rates and multimedia capabilities.
- Supported data transfer rates from hundreds of kbps to several Mbps, enabling video calls and mobile internet access.
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4G (Fourth Generation):
- Emerged around 2010, delivering substantial improvements in speed ranging from tens to hundreds of Mbps.
- Introduced LTE and WiMAX technologies, enabling high-speed internet, video streaming, and gaming with lower latency.
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5G (Fifth Generation):
- Revolutionized mobile connectivity with speeds reaching several gigabits per second.
- Offers low latency for real-time communication and supports advanced applications like autonomous vehicles and IoT.
- Capable of connecting numerous devices simultaneously, enhancing reliability and efficiency in network performance.
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Description
Test your knowledge on wired and wireless networks, including the types of cables used in wired connections and the technology behind wireless communication. Explore the differences between these two networking methods and their applications in modern technology.
