iii.EXPLAIN HOW DIAGNOSTIC TOOL ARE USED TO COLLECT DATA

Question

iv. identify and describe ways OF IMPROVING THE PERFORMANCE OF LAN COMPUTER NETWORKS

Answer 1

iii. Diagnostic tools are used to collect data in computer networks by monitoring the network traffic, detecting errors or issues, and providing information on the health and performance of the network. These tools help network administrators to troubleshoot problems, identify bottlenecks, and optimize the network for better performance.

Some common diagnostic tools used to collect data in computer networks include:

1. Packet sniffer: A packet sniffer captures and analyzes network traffic to identify issues such as packet loss, latency, and bandwidth utilization.

2. Network analyzer: A network analyzer provides detailed information about the network traffic, protocols being used, and devices connected to the network. It helps in diagnosing and troubleshooting network issues.

3. Ping and traceroute: Ping is used to test the connectivity between devices on a network, while traceroute traces the path a packet takes to reach its destination. These tools help in identifying network issues and measuring latency.

4. SNMP monitoring: Simple Network Management Protocol (SNMP) monitoring tools collect data from network devices such as switches, routers, and servers to provide information on network performance and health.

iv. Ways of improving the performance of LAN computer networks include:

1. Upgrade network hardware: Upgrading switches, routers, and access points to newer models with higher processing power and bandwidth capacity can improve network performance.

2. Optimize network configuration: Configuring the network settings, such as adjusting the Quality of Service (QoS) settings, optimizing VLANs, and implementing network segmentation, can help in improving network performance.

3. Monitor network traffic: Regularly monitoring network traffic using diagnostic tools can help in identifying bottlenecks, congestion, and other issues affecting network performance.

4. Implement network security measures: Securing the network with firewalls, intrusion detection systems, and encryption can help in preventing security threats that may impact network performance.

5. Regularly update software: Keeping network devices and software up to date with the latest patches and updates can improve network performance and security.

6. Implement caching and load balancing: Using caching servers and load balancing techniques can help in distributing network traffic efficiently and improving network performance.

By following these strategies, network administrators can improve the performance of LAN computer networks and ensure a reliable and efficient network infrastructure.