《计算机网络第五版习题解答1-5章详解：网络带宽与延迟对系统性能的影响》

The performance of a client-server system is greatly affected by two key network characteristics, namely, the bandwidth and latency. Bandwidth refers to the amount of data that can be transferred per unit of time, while latency is the time it takes for the data to travel from the client to the server. An example of a network with high bandwidth but high latency is a satellite network. Satellite networks have the ability to transmit a large amount of data at once due to their high bandwidth capacity. However, the data must travel great distances between the satellite and the ground station, leading to high latency. This delay in communication can impact the overall performance of a client-server system. On the other hand, an example of a network with low bandwidth and low latency is a local area network (LAN). LANs have limited bandwidth compared to satellite networks, but they provide low latency as the data only needs to travel short distances between devices. This results in fast communication and minimal delays in data transmission, improving the performance of client-server systems operating within the LAN. In conclusion, the performance of a client-server system is heavily dependent on the network characteristics of bandwidth and latency. Networks with high bandwidth but high latency, like satellite networks, can experience delays in data transmission. In contrast, networks with low bandwidth and low latency, such as LANs, offer fast and efficient communication between clients and servers. It is important for network administrators to consider these factors when designing and managing network systems to optimize performance.