TELNET | Internet Fundamentals
TELNET Telnet stands for TELecommunication NETwork. Telnet is used for Remote Logins. Telnet is a program that allows you to
Read moreAuthor: Gopal Krishna
Search Engine | Internet Fundamentals
Search engines are an integral part of the Internet. A search engine is a web-based tool used to search information
Read morePlug-ins | Internet Fundamentals
Plugin A plug-in is a software module that acts as an add-on to a web browser and gives additional functionality.
Read moreNEWSGROUP | Internet Fundamentals
NEWSGROUP A newsgroup is an Internet-based discussion about a particular topic. These topics range from sports, cars, investments, and teen
Read moreMIME | Multi-Purpose Internet Mail Extensions
Multi-Purpose Internet Mail Extensions MIME is an extension of the original Email protocol SMTP. SMTP is a protocol used to
Read moreMeta Search Engine | Internet Fundamentals
The search engine visits billions of websites and creates a database or repository of sorts of the various sites. This
Read moreDirectory Search Engine | Web Directories
Directory Search Engines Searching for content or web pages submitted by hand (in person). In other words materials are found
Read moreDNS | Domain Name System | Internet Fundamentals
Domain Name System (DNS) In order to understand DNS, we need to have a basic understanding of IP addresses and
Read moreISP | Internet Service Provider | Internet Fundamentals
Internet Service Provider (ISP) An Internet service provider (ISP) is a company that provides Internet connection to its customers. Connection
Read moreHow Search Engine Works | Internet Fundamentals
Search Engine Internet contains a vast collection of information, which is spread out across 1000’s of remote servers across the
Read moreMultiplexing in communication
Multiplexing Multiplexing is a technique, which allows many users to share a single communication channel (wire, cable, radio link, fiber
Read moreSampling in PCM | Digital Communications
Sampling Sampling is the 2nd process in PCM, which is done after band-limiting the message signal. The process by which
Read moreUnguided Transmission Media
Unguided transmission unguided transmission media do not use any physical connection between source and destination. They use air or free-space
Read moreQuantization in PCM with example
QUANTIZATION The PCM signal is generated by carrying out following basic operations: Band limiting (using LPF) Sampling Quantizing Encoding Two
Read moreTypes Communication Channels
Types Communication Channels The Channel provides the electrical connection between the source and destination. It is a physical path between
Read moreSignal Bandwidth vs Channel Bandwidth
BANDWIDTH Bandwidth is the difference between upper and lower frequency limits of the signal It is defined as the range
Read moreAntenna Measurements | Communication Systems
Antenna Measurements The antenna is an important element of radio communication, remote sensing and radio localisation systems. The measurement of
Read moreOFDM | Orthogonal Frequency Division Multiplexing
OFDM = Orthogonal FDM = Orthogonal Frequency Division Multiplexing Modulation is fundamental requirement in any communication system. Multi means two or
Read moreDirect Sequence Spread Spectrum | DSSS
Direct Sequence Spread Spectrum (DSSS) Radio communication suffers from following problems: Interference Jamming Multipath propagation & fading Secure communication INTERFERENCE:
Read moreTypes of Antennas | Communication Systems
Types of Antennas Antennas are broadly classified based on the following parameters: Wavelength (or frequency of operation) Frequency range of
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