Education

How Search Engine Works?

search engine

What is Search Engine and How it Works? The Search Engine collects a database of information about document on the web. The search engine then allows the users to look for particular words in the database, and it returns links to the documents that contain the users search items. If the user selects his search…

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What is PAL, SECAM and HDTV?

hdtv

Differences between PAL, SECAM and HDTV When color television was invented, various methods for displaying color were technically possible, and different countries made different choices, leading to systems that are still incompatible. In all countries a political requirement was the program transmitted in color had to be received on existing black-and-white television sets. Consequently the…

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What is Broadcast Routing?

broadcast routing

Explain About BroadCast Routing in Networking In many applications there is a need to exchange or transfer data from one host to another. This sending of data packets to one or more destinations at one instant is referred as broadcasting. A broadcasting method which requires no special features from the subnet is for the source…

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What is Mobile Host Routing Protocol?

mobile host routing

Mobile Host Routing Protocol – A Brief Explanation There are infinite number of individuals processing personal computers who want to access their e-mail accounts while staying at any corner of the world. And the complication introduced by there is to identify the mobile host at first instance. The network designers use a typical model of…

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What is Network Flooding? How it Works

flooding

Flooding in Computer Networks – Meaning and Definition At each router, every incoming packet is sent out to all outgoing lines except the route it arrived on. So, when the packets reach destination, they indicate a different route from source to destination. The best of those paths will be selected. This is generally implemented as…

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What is Firewall ? What it’s Purpose?

firewall

Firewall Definition and Working The role of fire wall is to enforce a security policy between the secure internal networks and the internet. A firewall is implemented in a computer or a router and its role is to control external access to internal information and services. Organizations employ firewalls for one or more of the…

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What is Fragmentation? How it is Helpful?

fragmentation

Fragmentation Meaning and Definition The maximum size of packet varies from network to network. Several factors will dominate the size of the packets like hardware, the operating system, protocol design, that attempts to reduce the re-transmission overhead in case of errors and to present the packet occupying the channel too long. The obvious solution for…

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What is Routing? How it is used in Networks

routing

Network Routing – The Meaning and Definition Routing in inter-networks adds additional complexity to the algorithm design compared to the case of intra-network routing. Since, route may span through several networks across several countries, the individual policies of the countries about data and information exchange needs to be considered. Many a time, the interior routing…

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What is Reverse Address Resolution Protocol (RARP)?

rarp

Reverse Address resolution protocol (RARP), Bootstrap Protocol (BOOTP) These protocols are nowhere used nowadays. They are replaced by DHCP (Dynamic Host Configuration Protocol). Reverse ARP assigns IP address to a known MAC address. Suppose a diskless workstation is booted, it gets its binary version of operating system from remote system. In such cases, the workstation broadcasts…

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What is Address Resolution Protocol (ARP)?

arp

Address Resolution Protocol ARP Definition The hosts or routers are recognized at network layer by IP addresses or by addresses defined by some other protocol used instead of IP. An IP address is an inter network address. However to identify a host irrespective of network protocol, we need an other address called MAC address. These…

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