In computing, a computer network, often simply referred to as a network, is a collection of devices connected by communication links. The devices can be hardware, such as computers, or software, such as network protocols. The nodes can be individual computers or other devices, such as routers, switches, and printers.
A computer network facilitates interpersonal communication and allows sharing of resources. In addition, computer networks can create a collaborative environment where users can work together to achieve a common goal. Computer networks are ubiquitous in most businesses and organizations.
A computer network is a collection of two or more connected computers. When two or more computers are connected, they can share resources, such as files, printers, and scanners. They can also communicate with each other, allowing users to collaborate on projects or play games together.
Most computer networks are built using a client-server model. In this model, each computer on the network is either a client or a server. The clients are the devices that request services from the servers. The servers provide the services that the clients request.
Networks can be divided into two categories: local area networks (LANs) and wide area networks (WANs). LANs are networks that are limited to a geographic area, such as a building or a campus. WANs are networks that span a large area, such as the Internet.
LANs and WANs can be further divided into two categories: wired networks and wireless networks. Wired networks use physical cables to connect the devices on the network. Wireless networks use radio waves to connect the devices on the network.
The three most common types of network cables are Ethernet cables, coaxial cables, and telephone cables. Ethernet cables are the most common type of cable and are typically used to connect computers to routers and switches. Coaxial cables are often used to connect televisions to cable modems. Telephone cables are typically used to connect telephone lines to routers and switches.
Network adapters are devices that allow computers to connect to a network. There are three types of network adapters: wired network adapters, wireless network adapters, and Bluetooth adapters. Wired network adapters are the most common type of network adapter and are used to connect computers to a wired network. Wireless network adapters are used to connect computers to a wireless network. Bluetooth adapters are used to connect computers to a Bluetooth network.
Network routers are devices that connect a LAN to a WAN. Network routers allow computers on a LAN to share resources with devices on the WAN. Network routers also allow devices on the WAN to communicate with devices on the LAN.
Network switches are devices that connect devices on a LAN. Network switches allow devices on a LAN to communicate with each other. Network switches also allow devices on a LAN to share resources.
Network hubs are devices that connect devices on a LAN. Network hubs allow devices on a LAN to communicate with each other. Network hubs also allow devices on a LAN to share resources.
Network bridges are devices that connect two or more LANs. Network bridges allow devices on different LANs to communicate with each other. Network bridges also allow devices on different LANs to share resources.
Network firewalls are devices that protect a LAN from unauthorized access from the WAN. Network firewalls allow or deny traffic from the WAN based on a set of rules. Network firewalls are typically used to protect sensitive data on a LAN.
Network gateways are devices that connect two or more networks. Network gateways allow devices on different networks to communicate with each other. Network gateways also allow devices on different networks to share resources.
Network management software is
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What is computer network definition?
A computer network is a system of two or more computers connected together to share resources. A computer network can be as simple as two computers connected by a cable, or as complex as the Internet.
Networks are essential to modern life. They allow us to share resources, such as printers and files, and to communicate with one another. Networks also allow us to access the Internet, which provides us with an endless source of information and entertainment.
There are different types of computer networks, each with its own advantages and disadvantages. The most common type of computer network is the local area network (LAN). A LAN connects computers within a small area, such as a home, office, or school.
A LAN can be either wired or wireless. Wired LANs use physical cables to connect the computers, while wireless LANs use radio signals to connect the computers.
Another common type of computer network is the wide area network (WAN). A WAN connects computers in different geographical areas, such as different cities, states, or countries.
WANs can be either wired or wireless. Wired WANs use physical cables to connect the computers, while wireless WANs use radio signals to connect the computers.
The most common type of wireless WAN is the cellular network. Cellular networks use radio signals to connect computers to the Internet.
Most computer networks are either LANs or WANs. However, there is a new type of computer network called the the Internet of Things (IoT). The IoT is a network of devices, such as cars, appliances, and sensors, that are connected to the Internet.
The IoT is growing rapidly and is expected to include billions of devices by 2020.
What is computer network and its types?
A computer network is a collection of two or more connected computers. Networks can be as small as two devices, or as large as millions of devices. Networks allow devices to share resources, such as files, printers, and internet connections.
There are three main types of computer networks: local area networks (LANs), wide area networks (WANs), and the internet.
A LAN is a network that covers a small area, such as a home, office, or school. LANs typically connect devices using Ethernet cables.
A WAN is a network that covers a large area, such as a city, state, or country. WANs typically connect devices using telephone or satellite connections.
The internet is a global network that connects devices using a variety of methods, including telephone, satellite, and cable connections. The internet is the largest computer network in the world.
What is the best definition of a network?
What is the best definition of a network? A network is a system of interconnected devices or nodes. Networks can be local or global, and can be used for communication or transportation. Networks can be physical or virtual, and can be composed of wired or wireless connections.
What is computer network with example?
A computer network is a system of two or more computers connected by communication links. Networks can be used to share resources, such as files, printers, or internet access. Networks can also be used to allow users to communicate with each other.
Computer networks can be simple or complex. A simple network might only have two computers connected to each other by a wired or wireless connection. A complex network might have hundreds or even thousands of computers connected to each other.
Most computer networks use a network protocol to manage traffic and communication between the computers on the network. Network protocols can be divided into two categories: connection-oriented protocols and connectionless protocols.
Connection-oriented protocols establish a dedicated connection between two computers before exchanging data. Connectionless protocols do not establish a dedicated connection between two computers. Instead, they send data packets between the computers as needed.
Most computer networks use a combination of connection-oriented and connectionless protocols. For example, the Transmission Control Protocol/Internet Protocol (TCP/IP) is a connectionless protocol that is used to manage traffic on the internet.
What are the 4 types of networks?
There are four main types of computer networks: local area networks (LANs), wide area networks (WANs), metropolitan area networks (MANs), and global area networks (GANs).
LANs are typically confined to a single building or campus. A WAN, by contrast, spans a large geographic area, such as a country or even the entire world. A MAN covers a smaller territory, such as a city. GANs are the most expansive, linking networks across different countries.
LANs are typically used for communication within a single organization, while WANs and MANs are used for communication between different organizations. GANs are used for communication between organizations across different countries.
Each type of network has its own advantages and disadvantages. LANs are fast and efficient, but can be expensive to set up and maintain. WANs are slower but less expensive. MANs offer a balance of speed and cost, while GANs offer the fastest speeds and the lowest costs.
What are uses of computer network?
Computer networks are a vast and complex system of interconnected devices and servers that allow communication and sharing of resources between users. While the many uses of computer networks are too vast to list in their entirety, here are some of the most common applications:
Communication and collaboration: Email, instant messaging, online chat rooms, and video conferencing allow people to communicate with each other in real time, regardless of their location. This can be incredibly useful for both personal and professional purposes.
File sharing: Networks allow users to share files of all types, making it easy to collaborate on projects and keep everyone up to date on the latest versions.
Internet access: By connecting to a computer network, users can access the internet and all of its resources from any device on the network.
Remote access: Through a network, users can access their devices and files from anywhere in the world. This can be especially helpful for business owners or employees who need to work from home or on the go.
Sharing resources: Printers, scanners, and other office equipment can be shared among users on a network, making it easier and more cost-effective to get work done.
There are many other uses for computer networks, these are just a few of the most common. Networks can be incredibly useful tools for both personal and professional productivity, and with the ever-growing popularity of cloud-based services, their potential uses are only expanding.
What are the 5 components of a network?
A computer network is a system of interconnected computers and devices. Networks can be local area networks (LANs) or wide area networks (WANs). LANs typically connect computers in a single building or a small group of buildings. WANs can connect computers in different geographic locations.
There are five basic components of a computer network:
1. Network Interface Devices (NIDs)
2. Network Protocols
3. Network Cables
4. Network Switches
5. Network Routers
Network Interface Devices (NIDs)
Network Interface Devices (NIDs) are hardware devices that allow computers and other devices to connect to a network. NIDs can be wired or wireless. Wired NIDs are connected to the network with network cables. Wireless NIDs use radio signals to connect to the network.
Network Protocols
Network protocols are software protocols that allow devices to communicate with each other on a network. There are many different network protocols, but the most common are TCP/IP and Ethernet.
Network Cables
Network cables are used to connect devices to a network. Network cables are typically either Category 5 (Cat 5) or Category 6 (Cat 6). Cat 5 cables can support speeds up to 100 Mbps. Cat 6 cables can support speeds up to 1 Gbps.
Network Switches
Network switches are devices that allow multiple devices to connect to a network. Switches create a separate communication channel for each device. This allows devices to communicate with each other at full speed.
Network Routers
Network routers are devices that allow devices to communicate with each other across different networks. Routers create a table of the networks they are connected to and the best route to each network.
