Presentation 2

[Virtual Presenter] Subject: computer NETWORK ARCHITECTURE Class: 10 Name: pratik sapkota,pratik chapagai ,Riwaj lohani,satish sapkota,Ayush para juli.

[Audio] NETWORK ARCHITECTURE IS THE NETWORK DESIGN THAT DESCRIBES HOW THE COMPUTERS ON THE NETWORK INTERACT AND COMMUNICATE WITH EACH OTHER. It can be classified into three type: i. Client-server network architecture ii. Peer-to-peer network architecture iii. Centralized network architecture 1 2.

[Audio] Client-server network architecture CLIENT-SERVER ARCHITECTURE IS A COMPUTING MODEL THAT DIVIDES TASKS OR WORKLOADS BETWEEN SERVICE PROVIDERS (SERVERS) AND SERVICE REQUESTERS (CLIENTS). THIS MODEL IS A FOUNDATIONAL STRUCTURE FOR DESIGNING NETWORKED APPLICATIONS, ENSURING EFFICIENT RESOURCE ALLOCATION AND SCALABLE SYSTEMS. 1 3.

[Audio] ADVANTAGES OF CLIENT-SERVER ARCHITECTURE ➢ It is centralized, which means that all data and services are stored and managed in a single place. ➢ It is cost-efficient, as it requires less hardware and software resources for the client side. ➢ It has high performance and low latency, as the server can handle many requests from many clients simultaneously and efficiently. 1 4.

[Audio] DISADVANTAGE: Moving to Client-Server Architecture is a major twoto-five-year conversion process. Controlling the Client-Server environment to prevent unauthorized use, invasion of privacy, and viruses is difficult. It is a kind of centralized system. 1 5.

[Audio] PEER-TO-PEER NETWORK ARCHITECTURE ❖ THE PEER-TO-PEER IS A TYPE OF NETWORK ARCHITECTURE CONSISTING OF SEVERAL COMPUTERS WHICH ARE CONNECTED TO EACH OTHER..

[Audio] ADVANTAGES OF PEER-TO-PEER NETWORK ARCHITECTURE *Some advantages of peer to peer network are as follows: 1. All the resources and contents are shared by all the peers (clients). 2. It is more reliable as central dependency is eliminated. Failure of one peer doesn't affect the functioning of other peers. 3.There is no need for full-time System Administrator because each user can control their shared resources. 1 7.

[Audio] DISADVANTAGES OF A PEER TO PEER NETWORK SOME DISADVANTAGES OF PEER TO PEER NETWORK ARE AS FOLLOWS: In this network, the whole system is decentralized thus it is difficult to administer. Security in this system is very less. Data recovery or backup is very difficult since each computer should have it's own back-up system. 1 8.

[Audio] CENTRALIZED NETWORK 9 A type of network where all the users are connected to a central server is known as centralized network. This server is responsible for storing user account and other information. Instant messaging uses centralized t k.

[Audio] Advantages of centralized network 1.It provides high data security. 2.It helps in reducing cost. Disadvantage of centralized network 1. Large data storage is required. 2. High traffic reduces the performance..

[Audio] Network Topologies Ring topology 1 11. 1 11 Network Topologies Ring topology.

[Audio] NETWORK TOPOLOGIES Network topologies refers to the arrangement and connection patterns of computers in the network. Network topologies are of several types. Some topologies used in LAN are as follows: Bus or linear topology Star topology Ring topology 1 12.

[Audio] BUS OR LINEAR TOPOLOGY BUS TOPOLOGY IS THE SIMPLEST OF THE NETWORK TOPOLOGIES . IN THIS TYPE OF TOPOLOGY, ALL THE NODES (COMPUTERS AS WELL AS SERVERS) ARE CONNECTED TO THE SINGLE CABLE BY THE HELP OF INTERFACE CONNECTORS..

[Audio] ADVANTAGE OF BUS TOPOLOGY It is easy to set-up and extend. Bus topology is comparatively cheaper. Cable length required for this topology is the least compared to other networks. Linear Bus network is mostly used in small networks. 6/12/2024 14.

[Audio] DISADVANTAGE OF BUS TOPOLOGY If the main cable (i.e. bus) encounters any problem, whole network breaks down. There is maximum chance of collision of data. It is difficult to detect and troubleshoot fault at individual station. 6/12/2024 15.

[Audio] Star Topology This is the most commonly used and popular topologies in LAN . It also manages and controls the entire network system .There is no chance of data collision. 6/12/2024 16.

[Audio] *ADVANTAGES OF STAR TOPOLOGY SOME ADVANTAGES OF STAR TOPOLOGY ARE AS FOLLOWS: Star topology provides much better performance in comparison to bus topology. In this topology, new nodes can be added easily without affecting rest of the network. Centralized management helps in monitoring the network. Failure of one node or link doesn't affect 6/12/2024 the rest of network. 17.

[Audio] *DISADVANTAGES OF STAR TOPOLOGY SOME DISADVANTAGES OF STAR TOPOLOGY ARE AS FOLLOWS: If the central device(hub) fails ,the entire network will break down. The use of hub, a router or a switch as the central device increases the overall cost of the network. Performance as well number of nodes which 6/12/2024 can be added in such topology is depended on capacity of the central device. 18.

[Audio] RING TOPOLOGY In ring topology, all the nodes are connected to each-other in such a way that they make a closed circular loop. . There is no chance of data collision because data are travelled in one direction only that is clock wise or anti-clock wise .It is an example of peer to peer network mode. 6/12/2024 19.

[Audio] *ADVANTAGES OF RING TOPOLOGY SOME ADVANTAGES OF RING TOPOLOGY ARE AS FOLLOWS: This type of network topology is very organized so, it helps to reduce the chances of data collision. There is no need for network server to control the connectivity between workstations. Additional components do not affect the performance of network. Each computer has equal access to resources..

[Audio] DISADVANTAGES OF RING TOPOLOGY SOME DISADVANTAGES OF STAR TOPOLOGY ARE AS FOLLOWS: If one workstation or port goes down, the entire network gets affected. .Each packet of data must pass through all the computers between source and destination. So, makes it slower than Star topology. Network is highly dependent on the wire 6/12/2024 21 which connects different components..