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Questions and Answers
What is Bluetooth?
What is Bluetooth?
A wireless technology standard allowing electronic devices to connect without direct user action.
Which companies are part of the Bluetooth Special Interest Group? (Select all that apply)
Which companies are part of the Bluetooth Special Interest Group? (Select all that apply)
Who was Harald Bluetooth?
Who was Harald Bluetooth?
A king of Denmark around the turn of the last millennium.
Bluetooth technology requires line of sight for communication.
Bluetooth technology requires line of sight for communication.
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Bluetooth technology is a standard for a small, cheap radio chip to be plugged into ______.
Bluetooth technology is a standard for a small, cheap radio chip to be plugged into ______.
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What is a piconet?
What is a piconet?
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Bluetooth must support both ______ and voice.
Bluetooth must support both ______ and voice.
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What is the primary frequency band used by Bluetooth?
What is the primary frequency band used by Bluetooth?
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Match the following Bluetooth specifications with their descriptions:
Match the following Bluetooth specifications with their descriptions:
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Study Notes
Overview of Bluetooth
- Bluetooth is a wireless standard allowing various electronic devices, including computers and phones, to connect without cables or user intervention.
- Facilitates combined usability models, enabling multiple devices to work together seamlessly.
Bluetooth Special Interest Group
- More than 1000 companies form the Bluetooth Special Interest Group.
- Major contributors: Intel, 3com, Ericsson, IBM, Motorola, Nokia, Toshiba.
Naming Origin
- Named after Harald Bluetooth, a King of Denmark, symbolizing the importance of Baltic region countries in communications.
Advantages over Existing Technologies
- Addresses limitations of infrared communication, including:
- No requirement for line of sight.
- Supports multiple connections (one-to-many) instead of just one-to-one.
Bluetooth Architecture
- Bluetooth is a radio-frequency standard that establishes agreements at both physical and data link levels.
- Ensures reliable communication by defining protocols for data transmission, such as timing and data integrity.
Bluetooth Chips and Piconets
- Bluetooth chips permit cable replacements, transmitting information wirelessly at a special frequency.
- Devices can form ad-hoc networks called "piconets," starting with two devices and expanding to up to eight.
- One device acts as the Master while others function as slaves during a piconet connection.
Key Features and Specifications
- Cost-efficient; Bluetooth chips priced around $5.
- Secure communication supporting authentication and encryption.
- Compatible with both data and voice transmissions.
- Operates in noisy environments with data rates of up to 721 kbps in the 2.45 GHz ISM band.
- Supports multiple simultaneous piconets, designed to be low power and compact.
Applications and Usage Models
- Enables devices to connect to the Internet through Bluetooth access points, such as using a mobile phone to connect a notebook online.
- Standard peripheral devices like keyboards, mice, and headsets can connect wirelessly and perform multiple functions for different devices.
Dynamic Networking
- Allows for dynamic creation and disbandment of piconets, facilitating personal ad-hoc networks.
Specifications and Layers
- Core Specification outlines the lower layers of Bluetooth architecture, detailing the technology's operations.
- Profile Specification focuses on interoperability between devices built using the core technology.
- The Radio layer, the lowest layer defined, specifies requirements for Bluetooth transceivers in the 2.4GHz ISM band.
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Description
This quiz covers the essentials of Bluetooth technology, including its goals, requirements, architecture, and usage models. Learn how Bluetooth enables wireless connections among various electronic devices without the need for cables or direct user intervention. Test your knowledge on security aspects and applications of Bluetooth.
