Traversing a Binary Tree in Preorder

A binary tree can be traversed in two basic ways – preorder and postorder. Explained below is the process or preorder traverse of a binary...

Binary Tree

Binary Tree is a basic data structure that is used behind the scenes of all major technologies whether it’s a Database system or operating system,...

Finding Torque and power transmitted

Here is an interesting problem and solution to calculate torque and power transmitted of a shaft and pulley system. You can easily extend this to...

Finding power transmitted by a pulley

Here is a real life mechanical problem to solve – Two parallel shafts whose center lines are 4.8m apart are connected on an open belt...

Gauss Jordan Elimination Method

Here is a well explained solution to solve a set of equations using Gauss Jordan Elimination method –...

Gauss Elimination Method

Below is a well explained solution for a set of equations using Gauss Elimination method. Enjoy!  ...

Master Electric Connection

We will see how to operate 3 lamps using a master switch and also simultaneously operating them....

Fluorescent Tube connection

Below is a simple step by step description of a Fluorescent Tube connection. We will see the list of materials needed, the procedure to build...

Proving Inversion Mapping

Here we venture to prove that Inversion Mapping maps the totality of circles lines in the Z plane on to the same that of W plane...

Finding Linear Fractional Transformation

Ok, here is a beautiful mathematical solution to find the Linear Fractional Transformation which maps |Z| <= 1 on to |W| <=1 such that Z =...

ARP – Address Resolution Protocol

ARP or Address Resolution Protocol is used to map Internet addresses to physical addresses. Address resolution is the process of mapping Internet IP addresses into...

Weaknesses of IP address

Below are couple major weaknesses of IP addresses – A machine cannot be assigned a permanent IP address i.e. it should change when the machine...

Network & Broadcast address

Network and Broadcast address are derived from the general IP addresses and are used for specific or reserved applications. Network address refers to the IP...

Internet Addresses

Internet address refers to the unique identification or address assigned to each machine in the physical network. The basic need for assigning Internet address is...

Internet Architecture

As shown above, the Internet consists of various physical networks (Net1 … Netn) connected together as a single large network. Each network may have host...

Internetworking Concept and Architectural Model

Internetworking is the technology that makes it possible to interconnect many disparate physical networks with diverse underlying hardware technologies and make them function as a coordinated...

ARPANET Technology

ARPANET (Advanced research project agency network) is the oldest wide area packet switched network build by the DARPA (Defense advanced research project agency). Physically ARPANET...

ProNET variation – Start topology

ProNET variation as star topology is as shown below – The 3 hosts are connected logically by a ring connection and physically by a start...

ProNET 10 Token recovery

ProNET 10 token recovery is essential to handle situations of loss of token when the host want to transmit. Such token loses occur due to...

ProNET Token Ring Technology

ProNET Token ring technology is an alternative to ethernet technology and it also works fairly good speeds. It uses token ring technology- Token ring network...

Ethernet Variations

Ethernet technology started with using the costly coaxial cables. Now it is possible to carry ethernet frames over cost-effective and cheaper twisted pair cables supporting...

Ethernet Bridges

Ethernet bridge is a fast computer with two Ethernet interfaces and a fixed program that improve upon the functions of repeaters by replicating the packets,...

Ethernet addressing and frame format

Ethernet Addresses refers to the unique physical/hardware address assigned or hardcoded on to the Ethernet interface card in 48 bits machine readable form. Physical ethernet...

Collission detection and Recovery in Ethernet

Ethernet data transmission enabled by TCP/IP is a best-effort delivery method. i.e the sender is given no information about whether the data packets were received...

Ethernet Hardware and basic architecture

A cross section of a Ethernet cable is as shown below – Ethernet is typically a 10Mbps local area packet switched network technology. The cross...

LAN, WAN and MAN

WAN (Wide Area Network) connects machines over widely separated geographical locations. A WAN usually consists of various packet switches installed at various points on the...

Internetworking

Internetworking is the technology that makes it possible to interconnect many disparate physical networks with diverse underlying hardware technologies and make them function as a coordinated...

Basics setup of Mobile Communication services

One of the fastest growing telecommunication industry is obviously mobile radio communication. Below figure shows a basic architecture of such a mobile communication network –...

Digitized Telephone services

In the past, we had manual exchanges which involved a great task in switching and routing of calls to various subscribers that increased network traffic...

Evolution of Data Communication Systems

Almost all of the Data communication systems across the world evolved from Telegraph systems. Later with developments in the telephone systems, it was now possible...

Data Communication – Basic Definition and setup

Data communication is the function of transporting digital signal from one digital device to another. Data transmission and data communications means two different things. Data...