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Articles by Ginni
Page 20 of 124
What are the differences between FDMA, TDMA, and CDMA?
Multiple users need to share a communication channel efficiently. FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access), and CDMA (Code Division Multiple Access) are three fundamental techniques that enable multiple users to access the same communication medium without interference. FDMA (Frequency Division Multiple Access) FDMA is an analog technique that divides the available frequency spectrum into separate frequency bands. Each user is assigned a unique frequency band for the entire duration of their communication session. In FDMA, the total bandwidth of the channel is divided into logical channels, with each transmitting device given exclusive control ...
Read MoreWhat is BISDN in Computer Network?
The B-ISDN (Broadband Integrated Services Digital Network) is a virtual circuit-switched network that can use high-speed packet switching services. B-ISDN uses a flexible multiplexing format called ATM (Asynchronous Transfer Mode) to deliver broadband services over digital networks. B-ISDN represents an evolution from the original ISDN, designed to handle high-bandwidth applications like video conferencing, multimedia communications, and high-speed data transfer that require significantly more capacity than traditional voice services. B-ISDN Service Classification Interactive Services Distribution Services ...
Read MoreWhat is the difference between a Control Plane and a Data Plane?
In networking, routers and switches operate using distinct functional layers called planes. The two most important planes are the control plane and the data plane, each serving different but complementary roles in network operations. Control Plane The control plane is the "brain" of network devices that makes intelligent decisions about how data should flow through the network. It handles routing protocols, maintains routing tables, and establishes communication paths between network devices. Key functions of the control plane include: Routing protocol processing − Running protocols like OSPF, BGP, and RIP to exchange routing information ...
Read MoreWhat are the types of Hubs in the Computer Network?
A hub is a networking device used to connect multiple devices in a network, creating a single collision domain where all connected devices share the same bandwidth. Hubs operate at the Physical Layer (Layer 1) of the OSI model and simply repeat incoming signals to all connected ports. There are three main types of hubs based on their functionality and features: Passive Hub Passive hubs are the simplest networking devices that contain no electronic components or signal processing capabilities. They act as simple connection points that physically join network cable segments together without amplifying or regenerating signals. ...
Read MoreDistinguish between Connection-Oriented and Connectionless Service
In computer networks, services can be classified based on how they handle data transmission between devices. The two primary approaches are connection-oriented and connectionless services, each with distinct characteristics and use cases. Connection-Oriented Services In a connection-oriented service, a dedicated communication path is established between the sender and receiver before data transmission begins. Each packet follows the same predetermined route, known as a virtual circuit, ensuring reliable and ordered delivery. The service operates in three phases: connection establishment, data transfer, and connection termination. This approach guarantees that packets arrive in the correct order without duplication or loss. ...
Read MoreWhat is the difference between Email and Gmail?
Electronic mail, commonly known as Email, is a method of exchanging digital messages over computer networks. Understanding the difference between email as a technology and specific email services like Gmail is essential for anyone using digital communication. What is Email? Email stands for Electronic Mail and refers to the transmission of messages over the internet using standardized protocols. Email operates using multiple protocols within the TCP/IP suite: SMTP (Simple Mail Transfer Protocol) − Used to send messages POP3 or IMAP − Used to retrieve messages from mail servers Configuration requirements − ...
Read MoreWhat is IPv4 Addressing?
An IPv4 address is a unique 32-bit identifier used to distinguish devices on a network. IPv4 (Internet Protocol version 4) operates at the network layer and assigns logical addresses to every interface that needs to communicate using TCP/IP. These addresses consist of 32 bits represented in binary notation, but to make them human-readable, they are typically expressed in dotted decimal notation. This format uses four decimal numbers (0-255) separated by periods, where each number represents 8 bits (one octet). IPv4 Address Structure (32 bits) ...
Read MoreWhat is the architecture of ISDN
ISDN (Integrated Services Digital Network) is a circuit-switched network technology that provides end-to-end digital connectivity over traditional telephone infrastructure. It bridges the Central Office's local loop and customer premises by using digital switching and transmission techniques to deliver voice, data, video, and fax services over a single line. The term "Integrated Services" refers to ISDN's capability to simultaneously deliver multiple types of communication services—data, voice, video, and fax—over a single digital connection. Multiple devices can be connected to the line and used as needed, making it a versatile solution for both residential and business applications. ISDN Services ...
Read MoreWhat are the types of IPv4 Addresses?
IPv4 supports various types of addressing modes to enable different communication patterns across networks. Understanding these addressing types is crucial for network design and implementation. Unicast Addressing A unicast address is assigned to a single network interface located on a specific subnet and facilitates one-to-one communication. This is a unique address worldwide for the identification of a machine on the network. Subnet prefix − The network identifier or network address portion of an IP unicast address. All nodes on the corresponding physical or logical subnet must share the same subnet prefix, which must be unique ...
Read MoreWhat are the design Issues in the Physical Layer?
The physical layer is responsible for transmitting raw bits from one device to another over a physical transmission medium. Unlike higher layers, the physical layer is not concerned with the meaning of bits, but focuses on the physical aspects of signal transmission, connection establishment, and hardware interfaces. Physical Layer Design Issues Connection Management Signal Encoding Data Delivery Fault Detection Data ...
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