"A computer network is a set of computers sharing resources located on or provided by network nodes."
This branch of Computer Science deals with the study of communication protocols, networking devices, and how data is transmitted between devices. Computer Networks are used to build large-scale networks, such as the Internet, that enable communication between different devices.
Computer Networks: Refers to the interconnection of computer systems to enable communication and sharing of resources like data, software and hardware among others.
Types of Networks: Categorization of networks based on size, range, topology, technology or functionality. Types include LAN, WAN, MAN, WLAN, CAN, SAN, PAN among others.
Network Protocols: Rules and standards governing communication between devices in a network. Includes TCP/IP, HTTP, DNS, SMTP, FTP, POP3 among others.
Network Topologies: The geometric arrangement of devices and connections in a network. Includes bus, star, ring, mesh, tree, hybrid topologies among others.
Network Devices: Hardware components used to connect and manage network resources. Includes routers, switches, hubs, firewalls, modems, repeaters among others.
LAN: Local Area Network is a network that covers a small geographical area like an office, building or campus.
WAN: Wide Area Network covers a large geographical area like a country or region and connects different LANs.
Ethernet: A wired network standard that uses copper and fiber optic cables to enable high speed communication between devices.
Wireless Networks: Networks that use radio waves, infrared or satellite communication to transmit data between devices.
IP Addressing: A unique identifier assigned to each device connected to a network to enable communication and routing of data.
Network Security: Protecting network resources from unauthorized access, modification, destruction or theft using security measures like firewalls, encryption and authentication protocols.
Network Troubleshooting: The process of diagnosing and resolving network issues like slow speeds, connectivity problems, hardware or software failure.
"Computers use common communication protocols over digital interconnections to communicate with each other."
"These interconnections are made up of telecommunication network technologies based on physically wired, optical, and wireless radio-frequency methods."
"The nodes of a computer network can include personal computers, servers, networking hardware, or other specialized or general-purpose hosts."
"They are identified by network addresses and may have hostnames."
"Hostnames serve as memorable labels for the nodes and are rarely changed after initial assignment."
"Network addresses serve for locating and identifying the nodes by communication protocols such as the Internet Protocol."
"Computer networks may be classified by many criteria, including the transmission medium used to carry signals, bandwidth, communications protocols to organize network traffic, the network size, the topology, traffic control mechanisms, and organizational intent."
"Computer networks support many applications and services, such as access to the World Wide Web, digital video and audio, shared use of application and storage servers, printers and fax machines, and use of email and instant messaging applications."
"The nodes of a computer network can include personal computers, servers, networking hardware, or other specialized or general-purpose hosts."
"Network addresses serve for locating and identifying the nodes by communication protocols such as the Internet Protocol."
"These interconnections are made up of telecommunication network technologies based on physically wired, optical, and wireless radio-frequency methods."
"Hostnames serve as memorable labels for the nodes and are rarely changed after initial assignment."
"A computer network is a set of computers sharing resources located on or provided by network nodes."
"Computer networks support many applications and services, such as access to the World Wide Web."
"The nodes of a computer network can include personal computers, servers, networking hardware, or other specialized or general-purpose hosts."
"Computers use common communication protocols over digital interconnections to communicate with each other."
"Computer networks may be classified by many criteria, including the transmission medium used to carry signals, bandwidth, communications protocols to organize network traffic, the network size, the topology, traffic control mechanisms, and organizational intent."
"Computer networks support many applications and services, such as shared use of application and storage servers, printers and fax machines."
"Computer networks support many applications and services, such as access to the World Wide Web, digital video and audio, shared use of application and storage servers, printers and fax machines, and use of email and instant messaging applications."