CCNA registration-basic network knowledge-1-2

CCNA registration-basic network knowledge-1-2 by understanding the Internet architecture, we can help you understand the network! The Internet architecture solves four basic features: Fault Tolerance, scalability, service quality (Qos), and security. Fault Tolerance: when some components in the network cannot work, they can continue to execute their normal functions. Redundancy, or copies of equipment media, is a key factor in fault tolerance. Scalability: An upgradeable network can add new users and devices without the need to redesign the network. Service Quality: display the execution level of the services provided by the network. Security: Information encryption and security devices at the LAN gateway are all used to achieve network security. Fault-tolerant network architecture Circuit Switching (high security and high cost): Transfers telephone signals from senders to physical connections of recipients. The call ends if any physical link is disconnected or a device problem occurs between the two. Packet Exchange (fault tolerance): In a Packet Exchange Network, a single piece of information is divided into multiple data blocks. These data blocks are called packets, which contain the address information of the sender and receiver. As the network administrator's compliance with the network's customer interconnectivity and scalability standards, the network can be better expanded. QoS: used to manage network traffic congestion. Congestion is caused by network resources exceeding its carrying capacity. Classification of traffic types: time-sensitive communications are time-sensitive and time-insensitive communications are highly important to organizations. Unnecessary communications are prioritized based on your needs. Network security safeguards network faults, resulting in communication and economic business losses personal or corporate capital losses Intellectual Property Rights theft confidential customer data exposure network infrastructure security content security network security means to ensure confidentiality, maintain communication integrity and ensure network availability