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A computer network is a group of two or more computers or devices connected together to share data, resources, and communication.
Computer networks are important because they enable online services, facilitate communication, allow resource sharing, support data management, and enhance collaboration among users.
Three common examples of networks used in daily life include home networks (connecting devices like phones and computers), office networks (linking employees' computers and printers), and university networks (connecting departments and classrooms).
Two common hardware components found in a network are switches and routers, which help manage data traffic and connect devices.
Wired networks use physical cables (like Ethernet) to connect devices, offering more security and faster speeds, while wireless networks use radio waves (like Wi-Fi) to connect devices without physical connections.
The Client-Server model is a network architecture where a central server provides services to multiple clients. For example, a web server hosts a website that can be accessed by multiple users' browsers (clients).
A Peer-to-Peer (P2P) network is useful in scenarios where users need to share resources directly with each other without a central server, such as in file sharing among friends or collaborative projects.
The main challenges in computer networking include network failures that disrupt communication, security risks such as hacking and malware, the need for effective management, and high setup costs.
Networks facilitate communication by allowing users to send emails, chat, and make video calls, enabling real-time interaction and information exchange.
Protocols, such as TCP/IP, define the rules and conventions for data transmission over a network, ensuring that devices can communicate effectively and reliably.
Resource sharing in networks allows multiple users to access and utilize shared resources, such as printers, files, and internet connections, leading to increased efficiency and cost savings.
Networks support data management by enabling centralized storage on servers, allowing users to store, access, and manage information from various devices connected to the network.
An access point is a hardware device that allows wireless devices to connect to a wired network, extending the network's coverage and enabling mobile connectivity.
The benefits of using a wired network include enhanced security, faster data transfer speeds, and reduced interference compared to wireless networks.
The largest global network is the Internet, which connects millions of devices worldwide, enabling communication, information sharing, and access to online services.
Switches function in a network by connecting multiple devices and directing data packets between them, ensuring efficient data transmission and reducing collisions.
A router's purpose in networking is to connect different networks together and route data packets between them, allowing devices on different networks to communicate.
Network failures can halt communication, disrupt business operations, and lead to data loss, making reliable network infrastructure and management crucial.
Collaboration benefits from networking by allowing multiple users to work together on projects in real-time, sharing files and resources seamlessly, regardless of their physical location.
The key components of a computer network include devices (computers, printers), switches, routers, access points, cables, operating systems, and protocols.
Operating systems play a crucial role in networking by managing hardware resources, facilitating communication between devices, and providing the necessary software environment for applications to run.