So, when the network size is large, only through the use of switches each host to ensure the allocation of sufficient network bandwidth. 2, in network design, network equipment selection of decisive importance. If the selection of properly, may lead to network performance below standard, or cause the waste of network equipment. The shared Ethernet using CSMA / CD mechanism, so that there is no QoS guarantee network. "QoS" means the network can be assigned to each host specified bandwidth, or at least reach a certain bandwidth requirements. Now getting lower and lower the price of network switches, hubs and the price of the same level or less, while the performance difference is very large, so the bandwidth should be possible to buy the exclusive switch, the use of switched Ethernet network to improve network performance.
Telefonica said that under Spanish law only required the disclosure in a criminal rather than civil proceedings the names of Internet users. European Court of Justice said in a statement, EU law does not require Member States to take the protection of copyright and disclosure of personal data in civil obligations. Promusicae want on the Internet using Kazaa to share copyrighted content Telefonica Internet service users name, to bring a civil action against them. European Court of Justice said that some EU legislation requires Member States to protect intellectual property rights. However, such protection can not affect the protection of personal data.