Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles by Bhanu Priya
Page 21 of 107
What are the challenges of a Computer Network?
Computer networks face numerous challenges that can impact their reliability, performance, and security. Understanding these challenges is crucial for IT professionals to maintain robust network infrastructure and ensure seamless communication across organizations. Network reliability encompasses issues like packet loss, bandwidth saturation, and latency. While these technical terms might seem overwhelming to smaller IT teams, the underlying problems often require systematic troubleshooting approaches beyond simple device reboots. Major Network Challenges Host Identification The Host ID is the portion of an IP address that uniquely identifies a host on a given TCP/IP network. While smaller networks can be ...
Read MoreWhat are the different types of Castings in computer networks?
Transmitting data in the form of packets over the internet is called casting. It refers to the method used to deliver data from one or more sources to one or more destinations across a network. Types of Casting The different types of casting are as follows: Unicast − Transmitting data from one host to another host (one-to-one) Broadcast − Transmitting data from one host to many hosts (one-to-all) Multicast − Transmitting data from one host to a particular group of hosts (one-to-many) Types of ...
Read MoreWhat is protocol graph? Compare the network interface and protocol
A protocol is a set of rules and standards that define how devices communicate in a network. Protocols are typically organized in layers, where each layer provides specific services and follows its own set of rules for data exchange. When communication requirements are simple, a single protocol may suffice. However, complex network communications require protocol layering, where different protocols operate at different layers. This layering separates services from implementation, allowing modifications to one layer without affecting others. Protocol Graph A protocol graph is a representation of the set of protocols that make up a network system. In ...
Read MoreWhat are wireless networks?
A wireless network is a computer network that uses radio waves, infrared, or other wireless communication technologies to connect devices without physical cables. Digital wireless communication has evolved from early systems like Morse code to modern high-performance networks that enable seamless connectivity across various distances and applications. Wireless networks eliminate the need for physical cabling infrastructure, providing mobility, flexibility, and easier installation in environments where running cables would be impractical or expensive. Wireless Network Communication Device A ...
Read MoreWhat is baseband transmission in computer networks?
Baseband transmission is a digital communication method where data is transmitted using the original frequency range of the signal without shifting it to higher frequency bands. In this transmission technique, the entire bandwidth of the communication channel is occupied by a single signal. Unlike passband transmission where signals are modulated to higher frequencies, baseband transmission sends digital data directly using its natural frequency spectrum. This makes it ideal for short-distance communication within local networks. How Baseband Transmission Works The process begins with line encoding, where digital bits are converted into electrical signals. The most common encoding scheme ...
Read MoreWhat are data link layer design issues?
The Data Link layer is located between physical and network layers. It provides services to the Network layer and receives services from the physical layer. The scope of the data link layer is node-to-node communication. OSI Layer Stack - Data Link Layer Position Network Layer Data Link Layer Physical Layer Services to Network Layer Services from Physical Layer Node-to-node communication scope The following are the ...
Read MoreWhat are elementary data link layer protocols?
Elementary data link layer protocols are fundamental communication protocols that establish reliable data transmission between directly connected nodes. These protocols handle frame delivery, error detection, and flow control at the data link layer of the network stack. Elementary data link protocols are classified into three categories based on their complexity and capabilities: Protocol 1 − Unrestricted simplex protocol Protocol 2 − Simplex stop and wait protocol Protocol 3 − Simplex protocol for noisy channels Unrestricted Simplex Protocol The unrestricted simplex protocol represents the most basic form of data transmission. Data flows in one direction ...
Read MoreWhat is the character count? Explain with an example?
Data link layer translates the physical layer's raw bit stream into discrete messages called frames. The key challenge is determining how a frame can be transmitted so the receiver can recognize the start and end of each frame. Frame Delimitation Techniques The techniques used to identify frame boundaries are: Character count − Uses a header field to specify frame length Flag byte with byte stuffing − Uses special delimiter bytes Starting and ending flag with bit stuffing − Uses bit-level delimiters Encoding violation − Uses invalid signal patterns as delimiters Character Count Method ...
Read MoreWhat is physical layer coding violation?
The Physical Layer Coding Violation is a framing technique used in data communication to identify frame boundaries by intentionally violating the normal encoding rules of the physical layer. This method leverages the redundancy built into certain encoding schemes to create distinct markers for frame delimitation. How It Works This technique is specifically used in networks where the physical medium encoding contains redundancy, such as in Manchester encoding. In Manchester coding, each data bit is represented by two physical bits, creating natural redundancy that can be exploited for framing purposes. Manchester Encoding and Coding ...
Read MoreWhat is ISCII Encoding?
The full form of ISCII is Indian Script Code for Information Interchange. It was established by the Bureau of Indian Standards in 1991 and is based on the earlier Indian Standard IS 10401:1982. ISCII is a coding scheme specifically designed for representing Indian languages in digital format. ISCII is an 8-bit encoding standard where the lower 128 characters (0-127) conform to the ASCII standard, and the higher 128 characters (128-255) are used to encode characters from Indian scripts. This design ensures backward compatibility with ASCII while providing support for Indic languages. ISCII 8-bit Character ...
Read More