Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)


OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography


Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking Network Security in Computer Network Disadvantages of Extranet Difference Between TELNET and FTP Define Protocol in Computer Networks Guided Transmission Media in Computer Network What is a Gateway in a Computer Network IGMP in Computer Networks LAN Protocols in Computer Networks MAN Meaning in Computer Modulation Techniques in Computer Networks Switching in DCN TCP/IP Applications What is IGMP? What is Modem in Networking What is Non-Persistent CSMA Difference between Cell Splitting and Cell Sectoring Forouzen Computer Network Open Loop and Closed Loop Congestion Control Types of Cluster Computing WAP-Wireless Access Point What are the elements of the Transport Protocol Difference between Gateway and Switch Flow Control in Data Link Layer Body Area Network Flooding in Computer Network Token Ring in Computer Networks VoIP in Computer Networks What is Infrared Transmission Congestion Control Techniques Forward Error Correction (FEC) Switching Techniques What is Telnet in Computer Network What are the Types of IPv4 Addresses IEEE 802.6 (DQDB) IEEE 802.15.4 Technology What is HDLC (High-level Data Link Control)? What is SMS Hubbing in Telecom? Circuit Switching in Computer Networks Communication Satellites in Computer Networks Features of HTTP Protocol IMAP4 (Internet Message Access Protocol) Internet Services How to Set up a Wireless Router Internetwork Routing in Computer Networks Distributed Computing System Features of GSM The 802.11 MAC Sublayer Protocol What is IEEE 802.3? What are Hubs and Switches in Computer Networks? What is Modem in a Computer Network? What is multicasting in Computer Networks? GSM -The Mobile Station What is Network Server? Slotted Aloha in Computer Network What is Ethernet in Computer Networks What is Arpanet?

Difference between NFC and RFID

This article will provide you with a detailed comparison between NFC and RFID technologies. Before diving into the main context let us understand what are NFC and RFID technologies.

What is NFC?

Using a wireless communication technique called Near Field Communication (NFC), two devices can communicate data simply which are located within a few centimetres of one another. NFC is a type of radio-frequency identification (RFID) technology.

NFC is widely used in a range of applications, such as mobile payments, contactless ticketing, access control, and data sharing between devices.

For example, you can use your smartphone to tap an NFC-enabled payment terminal to make a purchase or tap an NFC-enabled poster to receive information about a product or event.

NFC is a secure and convenient way to exchange data and it uses a technology called a "secure element" to protect sensitive information. The secure element is a chip that stores and encrypts data, and it can only be accessed by authorized parties.

Difference between NFC and RFID

One of the unique aspects of NFC is its ability to operate in two modes: active and passive. In active mode, both devices generate a radio signal, and they can exchange data in both directions. In passive mode, one device generates a radio signal, and the other device only responds to it. The majority of contactless payment systems employ this method.

In summary NFC is a wireless communication technology that enables devices to exchange data with just a tap. It is a secure and convenient way to perform a variety of functions, and it is widely used in mobile payments, contactless ticketing, and access control.Bottom of Form

What is RFID?

Wireless technology called Radio Frequency Identification (RFID) uses radio waves to identify and track items.

It consists of a reader that communicates with the tag and a tiny chip or tag that is attached to an item. When the tag is brought within the range of the reader, it is powered by the reader's radio waves, and it sends back a unique identifier or other data to the reader.

RFID technology has many applications in industries such as retail, healthcare, logistics, and manufacturing. It is used for inventory management, supply chain optimization, asset tracking, and security. RFID tags can be attached to products, vehicles, and even living beings, and they can be read without a line of sight or direct contact.

Difference between NFC and RFID

RFID tags come in two varieties: passive and active. Passive tags rely on the reader's radio waves for electricity because they lack a power source of their own. They are smaller and less expensive than active tags, and they are often used for inventory management and asset tracking. Active tags have their power source, and they can transmit data over longer distances. They are often used for vehicle tracking, cargo monitoring, and other applications where longer-range communication is required.

RFID technology has many benefits, including improved accuracy, efficiency, and security.
It can help organizations track and manage their assets more effectively, reduce inventory costs, and improve supply chain visibility. However, RFID also raises privacy concerns, as it can be used to track individuals without their knowledge or consent. To address these concerns, many RFID systems include privacy safeguards, such as encryption and access control.

Differences between NFC and RFID

AspectNear field communication(NFC)Radio Frequency Identification(RFID)
1. frequencyOperates at 13.56 MHzOperates at 13.56 MHz
2. RangeShort range, typically within a few centimetres.Can operate over a longer range, depending on the type of RFID.
3. CommunicationTwo-way communication between devices.Reader and tag only have one-way communication.
4. PowerOnly one-way communication is possible between the reader and the tag.Passive RFID tags require an external power source to operate.
5. SecurityUses a secure element to protect sensitive data.Security features may vary depending on the type of RFID.
6. Data TransferCan transfer data at a higher speed.Transfer of data may be slower compared to NFC.
7. ApplicationsPrimarily used for mobile payments, access control, and data sharing between devicesWidely used in inventory management, supply chain optimization, and asset tracking.
8. Size of the tagGenerally smaller than RFID tags.Can be larger than NFC tags depending on the application.
9. Types of tagsOnly one type of NFC tag.Several types of RFID tags such as passive, active, and semi-passive.
10. ReaderBoth devices generate a radio signal in active mode.The reader generates a signal to power the RFID tag in passive mode.
11. CompatibilityCan only communicate with other NFC devices.RFID tags can communicate with different readers depending on the frequency used.
12. InterferenceLess susceptible to interference from other signals.Can be affected by electromagnetic interference.

This is all about the comparison between NFC and RFID. Hope you understood this topic.