Comparison of Important IoT Technologies

 

Comparison of Important IoT Technologies

TechnologyFull FormRangePower ConsumptionSpeedMain Use
RFIDRadio Frequency IdentificationFew cm to several metersVery LowLowObject identification and tracking
NFCNear Field CommunicationUp to 10 cmVery LowLowMobile payments, smart cards
BluetoothWireless communication technology10–100 mLowMediumWearables, headphones, IoT devices
ZigBeeBased on IEEE 802.15.410–100 mVery LowLowHome automation, sensor networks
Wi-FiWireless Fidelity50–100 mHighHighInternet connectivity
6LoWPANIPv6 over Low Power Wireless Networks10–100 mVery LowLowIoT sensor networks
MQTTMessaging ProtocolInternet-basedLowFastIoT communication
CoAPConstrained Application ProtocolInternet-basedVery LowFastResource-constrained IoT devices
XMPPExtensible Messaging and Presence ProtocolInternet-basedMediumMediumMessaging and IoT communication
AMQPAdvanced Message Queuing ProtocolInternet-basedMediumReliableEnterprise and cloud messaging

Arduino vs Raspberry Pi

FeatureArduinoRaspberry Pi
TypeMicrocontrollerSingle Board Computer
Operating SystemNoYes (Linux)
Processing PowerLowHigh
MultitaskingNoYes
CostLowHigher
Power ConsumptionVery LowMore
Best ForSensors and controlComplex IoT applications

Exam Point:

Arduino is used for controlling sensors and actuators, while Raspberry Pi is used for data processing, cloud connectivity, and advanced applications.

MQTT vs CoAP

FeatureMQTTCoAP
Protocol TypePublish-SubscribeRequest-Response
Transport LayerTCPUDP
ReliabilityHighMedium
Power UsageLowVery Low
Best UseCloud communicationResource-constrained devices

Exam Point:

  • MQTT uses a broker and is suitable for cloud-based IoT.
  • CoAP is lightweight and suitable for low-power devices.

Bluetooth vs ZigBee vs Wi-Fi

FeatureBluetoothZigBeeWi-Fi
RangeMediumMediumHigh
Power ConsumptionLowVery LowHigh
Data RateMediumLowHigh
CostLowLowHigher
IoT UsageWearablesSensor NetworksInternet Access

Exam Point:

  • Bluetooth → Wearables and short-range communication.
  • ZigBee → Smart homes and sensor networks.
  • Wi-Fi → High-speed internet connectivity.

RFID vs NFC

FeatureRFIDNFC
RangeUp to several metersUp to 10 cm
CommunicationOne-way mainlyTwo-way
CostLowHigher
SecurityLowerHigher
ApplicationsTracking, attendanceMobile payments

Exam Point:

NFC is a special type of RFID with shorter range and better security.

XMPP vs AMQP

FeatureXMPPAMQP
Based OnXMLMessage Queue
CommunicationReal-time messagingReliable message transfer
SpeedMediumHigh
ComplexityMediumHigher
ApplicationsChat systems, IoTBanking, Enterprise IoT

Exam Point:

  • XMPP is mainly used for messaging.
  • AMQP is used where guaranteed message delivery is important.

Very Important 2-Mark Question

Which technology is best for:

  • Mobile Payment → NFC
  • Smart Home Sensors → ZigBee
  • Wearable Devices → Bluetooth
  • Internet Connectivity → Wi-Fi
  • Object Tracking → RFID
  • Cloud IoT Messaging → MQTT
  • Low-Power IoT Devices → CoAP
  • Sensor Node Control → Arduino
  • Edge Computing/Gateway → Raspberry Pi

Comments

Post a Comment

Popular posts from this blog

⭐ UNIT – 3 (Easy Notes + PDF References) Wireless LAN • MAC Problems • Hidden/Exposed Terminal • Near/Far • Infrastructure vs Ad-hoc • IEEE 802.11 • Mobile IP • Ad-hoc Routing

  ⭐ UNIT – 3 (Easy Notes + PDF References) Wireless LAN • MAC Problems • Hidden/Exposed Terminal • Near/Far • Infrastructure vs Ad-hoc • IEEE 802.11 • Mobile IP • Ad-hoc Routing I have rewritten everything in easy school-level English so you can understand quickly. 🔵 1. What is WLAN? (Wireless LAN) (Page 1 U-3 Wireless & mobile computing ) WLAN = Wireless Local Area Network. It allows devices to connect without cables using radio, infrared, or microwave signals. Why WLAN? ✔ No wires needed ✔ Quick installation ✔ Can attach to existing wired network ✔ Useful in disasters or old buildings where wiring is impossible 🔵 2. Design Goals of WLAN (Page 2–3 – Table shown in PDF U-3 Wireless & mobile computing ) ✔ Simple to use Users should easily connect. ✔ Low power use Mobile devices need long battery life. ✔ No license needed Using license-free bands reduces cost. ✔ Handle interference There is a lot of radio noise; WLAN must work even in interference. ...
Read more

UNIT–5 (Simplified & Easy Notes) Software Architecture Documentation

  UNIT–5 (Simplified & Easy Notes) Software Architecture Documentation ✅ What is Software Architecture Documentation? It explains how the software system is structured . Helps developers understand system components , modules , and design , without reading code. Works as a communication tool between architect, developer & stakeholder. ⭐ Goals of Documentation (Very Important) Knowledge Sharing Helps new developers understand the system quickly. Communication Architects share design ideas with developers. Analysis & Review Used to check if architecture meets requirements. ⭐ Two Ways to Create Architecture 1. Top-Down Approach Start from big design → break into smaller parts. Used when system requirements are clear. 2. Bottom-Up Approach Start from small components → combine to form system. Used when building systems step-by-step. ⭐ Principles of Sound Documentation (Super Important – Exam Repeated) Princ...
Read more

Agile software devlopment unit 1

  ⭐ 1. Introduction & Background of Agile 📌 What is Agile? (VERY IMPORTANT – must write in exam) Agile is a flexible, fast, and customer-focused software development approach that delivers the project in small parts (iterations) instead of completing everything at once. 📌 Why Agile? Traditional model (Waterfall) → slow, rigid, changes difficult. Agile → quick delivery, accepts changes anytime. 📌 Simple Meaning Agile = Develop in small steps + get feedback + improve continuously. ⭐ 2. Agile Manifesto (4 Values) 📝 You MUST remember these 4 lines. Always asked. Individuals & interactions over processes & tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan 👉 Easy Trick to Remember: I – W – C – R (Individuals, Working, Collaboration, Responding) ⭐ 3. 12 Agile Principles (Short & Scoring Version) (Write ANY 5–6 in exam) Customer satisf...
Read more