网络通信的核心保障——网络适配器及周边配件 随着科技的进步与网络的飞速发展，网络通信在人们日常生活中的地位越来越重要。在这个互联互通的时代，网络适配器及其周边配件成为网络通信的核心保障。

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一、网络适配器 网络适配器，又称为网卡，是连接计算机和计算机网络的关键设备。它的主要功能是实现数据链路层（MAC层）和物理层（PHY层）之间的信号转换。具体而言，它能够将数据包进行格式化后通过双绞线、光纤等介质传输至目标设备，并完成与网络其他设备的通信任务。因此，网络适配器的性能和稳定性对于整个网络的通信质量起着至关重要的作用。 二、周边配件 1. 光纤模块：光纤模块是网络适配器的重要组成部分，负责实现光信号的传输。它具有传输速度快、距离远、抗干扰能力强等优点，是现代网络通信中不可或缺的配件。 2. 交换机：交换机是网络通信中连接多个设备的核心设备之一。它能够将多个设备连接起来，实现数据的快速交换和共享。通过交换机的端口分配，能够使得各个设备间快速通信，保障整个网络的通畅运行。 3. 集线器：集线器作为基本的网络设备之一，它能够接收多个设备的信号并将其集中到一个中心点进行传输。集线器能够有效地扩展网络的覆盖范围，提高网络的稳定性和可靠性。 三、网络适配器及周边配件的重要性 在网络通信中，网络适配器及其周边配件的作用不容忽视。这些设备不仅是连接计算机和网络的重要桥梁，更是保障整个网络通信的核心要素。一个高质量的网络适配器能够保证数据传输的稳定性和速度，而周边配件如光纤模块、交换机和集线器等则能够有效地扩展网络的覆盖范围和提升网络的性能。因此，选择合适的网络适配器及其周边配件对于保障网络通信的稳定性和可靠性至关重要。 四、翻译成英文 Core Guarantee of Network Communication - Network Adapters and Peripheral Accessories

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With the advancement of technology and the rapid development of the internet, network communication plays an increasingly important role in people's daily lives. In this era of interconnection, network adapters and their peripheral accessories have become the core guarantee for network communication. First, network adapters, also known as network interface cards, are crucial devices that connect computers to computer networks. Their main function is to achieve signal conversion between the data link layer (MAC layer) and the physical layer (PHY layer). Specifically, they format data packets and transmit them through media such as twisted-pair cables and optical fibers to the target device, and complete communication tasks with other network devices. Therefore, the performance and stability of network adapters are crucial for the entire network's communication quality. Secondly, peripheral accessories: 1. Fiber optic modules: Fiber optic modules are important components of network adapters, responsible for transmitting optical signals. They have the advantages of fast transmission speed, long distance, and strong anti-interference ability, making them indispensable accessories in modern network communication. 2. Switches: Switches are one of the core devices that connect multiple devices in network communication. They can connect multiple devices and enable rapid data exchange and sharing. Through port allocation of switches, rapid communication between various devices can be achieved, ensuring smooth operation of the entire network. 3. Hubs: As one of the basic network devices, hubs can receive signals from multiple devices and concentrate them for transmission at a central point. Hubs can effectively expand the coverage of the network and improve its stability and reliability. In conclusion, the importance of network adapters and their peripheral accessories in network communication cannot be overlooked. These devices are not only important bridges connecting computers and networks, but also core elements that ensure the entire network communication. A high-quality network adapter can guarantee data transmission stability and speed, while peripheral accessories such as fiber optic modules, switches, and hubs can effectively expand network coverage and enhance network performance. Therefore, selecting appropriate network adapters and their peripheral accessories is crucial for ensuring the stability and reliability of network communication.