What is a Network?
A network is simply defined as something that connects things together for a specific purpose. The term network is used in a variety of contexts, Including telephone, television, computer, or even people networks.
A computer network connects two or more devices/computers together to share a nearly limitless range of information and services, including:
• Documents
• Email and messaging
• Websites
• Databases
• Music
In below diagram Ok and An connected through a network
Now come to the Point Protocol:--
Protocols are rules that govern how devices communicate and share information across a network.
Examples of protocols include:
1. IP – Internet Protocol
2. HTTP - Hyper Text Transfer Protocol
Multiple protocols often work together to facilitate end-to-end network Communication. Protocols are covered in great detail later .
Basic Types of Network:--
Network types are often defined by function or size or no of connected workstations. The two most common categories of networks are:
• LANs (Local Area Networks)
• WANs (Wide Area Networks)
A LAN is generally a high-speed network that covers a small geographic area, usually contained within a single building or campus. A LAN is usually under the administrative control of a single organization. Ethernet is the most common LAN technology.
A WAN can be defined one of two ways. The book definition of a WAN is a network that spans large geographical locations, usually to connect multiple LANs.
A MAN (Metropolitan Area Network) is another category of network, though the term is not prevalently used. A MAN is defined as a network that connects LAN’s across a city-wide geographic area.
An internetwork is a general term describing multiple networks connected together. The Internet is the largest and most well-known internetwork.
Network Architectures
A host refers to any workstation that is connected to a network. A host can also defined as any device assigned an IP address.
A host can use following functions:
• A host which request data, called as a client.
• A which provide data, called as a server.
• A host can both request and provide data, called as a peer.
Because of these functions, multiple network architectures have been developed, including:
1. Peer-to-Peer
2. Client/Server
3. Mainframe/Terminal
In a basic peer-to-peer architecture, all hosts on the network can both request and provide data and services. For example, two Windows 10 workstations configured to share files would be considered a peer-to-peer network.
Peer-to-peer networks are very simple to configure like static routes, yet this architecture presents several challenges. Data is difficult to manage and back-up, as it is spread across multiple orkstation. Security is equally problematic, as user accounts and permissions much be configured individually on each host.
Explanations No 1:--
In a client/server architecture, systems are assigned specific roles. Clients request data and services stored on servers. An example of a client/server network would be Windows 10 workstations accessing files off of a Windows 2007 server.
Advantage of the client/server:--
There are several advantages to the client/server architecture. Data and services are now centrally located on one or more servers, consolidating the security and management of that data. As a result, client/server networks can scale far larger than peer-to-peer networks.
Disadvantage of the client/server:--
One key disadvantage of the client/server architecture is that server can present a single point of failure. This can be mitigated by adding redundancy at the server layer.
A network is simply defined as something that connects things together for a specific purpose. The term network is used in a variety of contexts, Including telephone, television, computer, or even people networks.
A computer network connects two or more devices/computers together to share a nearly limitless range of information and services, including:
• Documents
• Email and messaging
• Websites
• Databases
• Music
In below diagram Ok and An connected through a network
Now come to the Point Protocol:--
Protocols are rules that govern how devices communicate and share information across a network.
Examples of protocols include:
1. IP – Internet Protocol
2. HTTP - Hyper Text Transfer Protocol
Multiple protocols often work together to facilitate end-to-end network Communication. Protocols are covered in great detail later .
Basic Types of Network:--
Network types are often defined by function or size or no of connected workstations. The two most common categories of networks are:
• LANs (Local Area Networks)
• WANs (Wide Area Networks)
A LAN is generally a high-speed network that covers a small geographic area, usually contained within a single building or campus. A LAN is usually under the administrative control of a single organization. Ethernet is the most common LAN technology.
A WAN can be defined one of two ways. The book definition of a WAN is a network that spans large geographical locations, usually to connect multiple LANs.
A MAN (Metropolitan Area Network) is another category of network, though the term is not prevalently used. A MAN is defined as a network that connects LAN’s across a city-wide geographic area.
An internetwork is a general term describing multiple networks connected together. The Internet is the largest and most well-known internetwork.
Network Architectures
A host refers to any workstation that is connected to a network. A host can also defined as any device assigned an IP address.
A host can use following functions:
• A host which request data, called as a client.
• A which provide data, called as a server.
• A host can both request and provide data, called as a peer.
Because of these functions, multiple network architectures have been developed, including:
1. Peer-to-Peer
2. Client/Server
3. Mainframe/Terminal
In a basic peer-to-peer architecture, all hosts on the network can both request and provide data and services. For example, two Windows 10 workstations configured to share files would be considered a peer-to-peer network.
Peer-to-peer networks are very simple to configure like static routes, yet this architecture presents several challenges. Data is difficult to manage and back-up, as it is spread across multiple orkstation. Security is equally problematic, as user accounts and permissions much be configured individually on each host.
Explanations No 1:--
In a client/server architecture, systems are assigned specific roles. Clients request data and services stored on servers. An example of a client/server network would be Windows 10 workstations accessing files off of a Windows 2007 server.
Advantage of the client/server:--
There are several advantages to the client/server architecture. Data and services are now centrally located on one or more servers, consolidating the security and management of that data. As a result, client/server networks can scale far larger than peer-to-peer networks.
Disadvantage of the client/server:--
One key disadvantage of the client/server architecture is that server can present a single point of failure. This can be mitigated by adding redundancy at the server layer.
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