Internet-based Content Delivery Traffic Management with CDN and P2P Overlays

第二套题（单选）1. 当标准以太网帧长为64Bytes的信号接入以太网单板后，若启用了QinQ功能，则该信号在单板内部的实际帧长是多少（）Bytes？ [单选题] *648468(正确答案)802. 以太网帧结构中DATA字段的长度范围是。

[单选题] *46-1500字节(正确答案)46-1518字节64-1518节64-1500字节3. 主控板单配情况下的单板替换操作比主控板双配时，要多哪个步骤？ [单选题] *下载原配置数据(正确答案)确保更换前后主机软件版本一致，若不一致请先升级更换单板软件。

网管与网元数据的一致性校验。

查询单板告警，确认原来的告警已经解除。

4. 以下关于MPLS-TP OAM层次的说法，正确的是： [单选题] *Section是Tunnel的服务层，Tunnel是PW的服务层，PW是Service的服务层(正确答案)Section是PW的服务层，PW是Tunnel的服务层，Tunel是Service的服务层Service是PW的服务层，PW是Tunnel的服务层，Tunnel是Section的服务层Tunnel是PW的服务层，PW是Service的服务层，Service是Section的服务层5. 以下关于以太网单板的内部端口属性的描述，错误的是： [单选题] *A. 对Access属性的入端口。

如果输入数据带有VLAN ID，丢弃对Tag Aware属性的入端口，如果输入数据带有VLAN ID，透传接收数据(正确答案)对Access属性的入端口，如果输入数据不带VLAN ID，直接透传对Tag Aware属性的入端口，如果输入数据不带VLAN ID，丢弃6. 以下哪项SOM系统监控不到。

[单选题] *主光路性能发端FEC的类型(正确答案)光性能平坦度收端OTU输入光功率7. 告警反转的设置是基于： [单选题] *A. 单板网元端口(正确答案)告警8. 在网管上查询误码及光功率之前需要进行（）操作，否则无法查询相应教据。

Part 2.2 eBay PlatformWarming-up ActivitiesListening参考答案及译文：1.revenue译文：得益于其成熟的非广告运营模式，它在收入多元化的基础上享有广告定价优势。

2.facilitates译文：易贝是一家拍卖行，该公司只是促进第三方买卖双方之间的商品销售。

3.generate译文：由于易贝需要卖家在其网站上列出产品来创造收入，该公司比亚马逊更注重卖家。

4.consider译文：虽然在易贝上销售有很多优势，但仍有一些缺点需要考虑。

5.delivery译文：乐天将主要精力放在了物流运输网络上，去年推出了“One Delivery”计划。

New Core VocabulariesTask1 Translate the following sentences into English, using the expressions in Brackets.参考答案1.Take the goods back to your retailer who will refund you the purchase price.2.We need to promote an open exchange of ideas and information.Task2 Match the English words in the left column with the English explanation in the right column.参考答案1.plastic 2.fabricTask3 Translate the following sentences into English, using the expressions in Brackets.参考答案You can get a $1000 cash advance for your trip from the financial department.Exercises1. Complete the following sentences by translating the Chinese given in the brackets into English.参考答案1. by reducing the price by 5%.译文：让我们各让一步，价格降低5%。

英语作文-快递服务行业的创新技术应用与智能化设备引进Innovation and Technological Advancements in the Express Delivery Service Industry。

The express delivery service industry has undergone remarkable transformations in recent years, driven by technological advancements and the increasing demand for efficient, reliable, and convenient delivery solutions. From the adoption of innovative technologies to the introduction of intelligent devices, the industry has embraced a new era of efficiency and convenience.One of the most significant advancements in the express delivery service industry is the integration of artificial intelligence (AI) and machine learning algorithms. These technologies have revolutionized various aspects of the delivery process, from route optimization to package sorting and delivery scheduling. By analyzing vast amounts of data in real-time, AI-powered systems can identify the most efficient delivery routes, minimize delivery times, and enhance overall operational efficiency.In addition to AI, the Internet of Things (IoT) has played a crucial role in streamlining operations and improving service quality in the express delivery industry. IoT-enabled devices, such as smart tracking sensors and connected delivery vehicles, enable real-time monitoring of shipments, allowing both customers and service providers to track the location and status of packages throughout the delivery process. This not only enhances transparency but also enables timely interventions in case of any unforeseen issues or delays.Furthermore, the use of robotics and automation has revolutionized warehouse operations and package handling processes in the express delivery service industry. Automated sorting systems, robotic arms, and unmanned aerial vehicles (UAVs) havesignificantly increased the speed and accuracy of package sorting and distribution, reducing reliance on manual labor and minimizing the risk of human errors.Moreover, the emergence of blockchain technology has introduced new opportunities for enhancing security, transparency, and trust in the express delivery service industry. By leveraging blockchain-based platforms, stakeholders can securely record and verify transactional data, including package origin, ownership, and delivery status, thereby reducing the risk of fraud, theft, and tampering.Additionally, the integration of augmented reality (AR) and virtual reality (VR) technologies has transformed the customer experience in the express delivery service industry. Through AR-powered mobile applications, customers can visualize and interact with virtual representations of their packages, track delivery progress in real-time, and even receive personalized delivery instructions based on their preferences.Furthermore, the advent of autonomous delivery vehicles, including drones and self-driving trucks, holds great promise for revolutionizing last-mile delivery operations. These vehicles can navigate through traffic, avoid obstacles, and deliver packages directly to customers' doorsteps, thereby reducing delivery times and enhancing overall efficiency.In conclusion, the express delivery service industry has witnessed remarkable advancements in innovation and technology, ranging from the integration of AI and IoT to the adoption of robotics, blockchain, AR, and VR. These technological innovations have not only improved operational efficiency and service quality but have also transformed the way customers interact with and experience delivery services. As the industry continues to evolve, embracing new technologies and innovations will be essential for staying competitive and meeting the evolving needs of customers in an increasingly digital world.。

无线基础术语解释作者: ViVi802.11a IEEE无线网络标准，指定最大54Mbps的数据传输速率和5GHz的工作频。

802.11b IEEE无线网络标准，指定最大11Mbps的数据传输速率和2.4MHz的工作频段。

802.11g IEEE无线网络标准，指定最大54Mbps的数据传输速率和2.4GHz的工作频段，向后兼容802.11b设备。

Access Point 是使配备无线功能的计算机和其他装置能通过无线网络进行通讯的装置。

也用于扩大无线网络的覆盖范围。

Adapter 是把网络功能添加到您个人电脑内的装置。

Ad-hoc 一组不用接入点而互相直接通信（端对端）的无线设备。

AES(Advanced Encryption Standard) 是一种利用高达256位密钥加密技术来保护数据的方法。

Backbone 网络的一部分，连接大多数系统和网络，处理大部分数据。

Bandwidth 指定的设备或网络的传输能力。

Beacon Interval 为使网络同步而在您的无线网络上传输的数据。

Bit(Binary Digit) 计算机表示信息的最小单位。

Boot 指启动设备并开始执行指令。

Bridge 连接两种不同类型的本地网络（如无线网络和有线以太网）的设备。

Broadband 一种永远在线的快速互联网连接。

Browser 是提供方法在万维网上找寻所有信息并与其互动的一种应用程序。

Buffer 是一个共享或分配的内存区域，它被用于支持和协调不同的计算以及网络活动以避免相互阻挡。

Byte 是长度通常为八位的数据单位。

Cable Modem 把计算机和电缆电视网络连接起来，然后连接到互联网的一种装置。

CSMA/CA (Carrier Sense Multiple Access/Collision Avlidance) 是一种用来避免数据碰撞的数据传输方法。

CTS(Clear To Send) 某一设备发出的表示准备好接收数据的信号。

英语作文-快递服务行业的驿站建设与配送网络In recent years, the logistics and express delivery industry has seen remarkable growth worldwide, driven largely by advancements in technology and the increasing demands of global commerce. One pivotal aspect of this industry's evolution is the establishment of distribution hubs and the optimization of delivery networks. These elements form the backbone of efficient logistics operations, enabling businesses to meet the growing expectations of consumers for faster and more reliable delivery services.Central to the logistics infrastructure are distribution hubs, strategically located nodes that serve as transfer points for goods moving through the supply chain. These hubs are designed to streamline the process of sorting, consolidating, and redistributing packages to their final destinations. By centralizing operations, logistics companies can achieve economies of scale and reduce transit times, ultimately enhancing overall service efficiency.The construction and management of these distribution hubs require careful planning and investment in both physical infrastructure and technological solutions. From a physical standpoint, these hubs are equipped with advanced warehousing facilities, automated sorting systems, and robust security measures to ensure the smooth flow and safe handling of goods. Moreover, integrating cutting-edge technologies such as AI-driven predictive analytics and IoT (Internet of Things) sensors allows for real-time monitoring of inventory levels, traffic patterns, and delivery statuses, enabling proactive decision-making and continuous optimization of operations.Beyond the physical infrastructure, the effectiveness of distribution hubs heavily relies on the integration and connectivity within a broader delivery network. This network encompasses various transportation modes—road, rail, air, and even autonomous vehicles—each optimized for different stages of the delivery process. Seamlessintegration of these modes ensures that goods can be transported swiftly across long distances while accommodating last-mile delivery challenges in urban areas.Furthermore, the establishment of a robust delivery network is crucial for meeting the diverse needs of customers. By expanding coverage and enhancing delivery speed, logistics providers can offer competitive advantages in the marketplace. This includes leveraging data analytics to anticipate demand surges, dynamically adjust routes, and allocate resources efficiently, thereby minimizing delays and optimizing resource utilization.In addition to enhancing operational efficiency, the strategic placement of distribution hubs and the optimization of delivery networks contribute to environmental sustainability. By reducing unnecessary mileage and optimizing route planning, logistics companies can minimize carbon emissions and energy consumption associated with transportation activities. This commitment to sustainability not only aligns with global environmental goals but also enhances brand reputation and customer loyalty.Looking ahead, the evolution of distribution hubs and delivery networks will continue to be shaped by technological innovations and evolving consumer expectations. The ongoing integration of AI, blockchain, and autonomous technologies promises to further revolutionize logistics operations, enabling faster, more secure, and cost-effective delivery solutions. Moreover, partnerships and collaborations across industry stakeholders will play a crucial role in driving innovation and addressing emerging challenges in the logistics landscape.In conclusion, the development of distribution hubs and the optimization of delivery networks are pivotal to the success of the express delivery industry. By focusing on strategic infrastructure investments, technological integration, and sustainability initiatives, logistics providers can meet the evolving demands of global commerce while delivering exceptional service experiences to customers worldwide. As the industry continues to evolve, these foundational elements will remain essential in shaping the future of logistics and express delivery services on a global scale.。

即时配送英文术语Possible answer:Instant delivery, also known as on-demand delivery, refers to the fast and flexible transportation of goods and services from a seller to a buyer, usually within a few hours or even minutes of placing an order, using various digital platforms, logistics networks, and fulfillment technologies. This emerging trend has been driven by the growing demand for convenience, speed, and personalization in the e-commerce, retail, food, healthcare, and other industries, as well as the rise of mobile devices, cloud computing, and artificial intelligence that enable real-time tracking, routing, and optimization of shipments.Here are some key terms and concepts related to instant delivery:1. Courier: a person or company that picks up, transports, and delivers packages, documents, or other items on behalf of a sender and a receiver, often using bikes, cars, vans, or trucks.2. Delivery time: the estimated or guaranteed time window within which a shipment will arrive at its destination, based on factors such as distance, traffic, weather, capacity, and priority.3. Delivery fee: the cost that a customer pays for the delivery service, which may vary depending on the distance, weight, size, urgency, and other factors of the shipment.4. Real-time tracking: the ability to monitor the location, status, and ETA (estimated time of arrival) of a shipment in real-time, using GPS, sensors, or other technologies, and to communicate with the courier or customer if needed.5. Routing optimization: the process of finding the most efficient and cost-effective route for a courier to pick up and deliver multiple shipments, based on factors such as location, capacity, time, and traffic, and using algorithms, AI, or machine learning.6. Fulfillment center: a physical facility where goods are stored, organized, and processed for delivery, often using automation, robotics, or human labor, and integrated with digital platforms and logistics networks.7. Demand forecasting: the practice of estimating the expected demand for a product or service in a specific location and time frame, based on historical data, market trends, customer segments, and other factors, and using predictive analytics or AI.8. Last-mile delivery: the final stage of delivery that involves transporting a shipment from a fulfillment centeror a hub to the customer's doorstep, often using bikes, scooters, or walkers, and facing challenges such as traffic, parking, security, and customer preferences.中文翻译：即时配送，也称为按需配送，指的是在下订单后几小时甚至几分钟内，使用各种数字平台、物流网络和履行技术，将货物和服务从卖家送到买家的快速灵活的运输方式。

英语作文有关快递行业风生水起的原因看法The Delivery Trucks Keep On Coming!Have you noticed all the delivery trucks driving around your neighborhood lately? They seem to be everywhere! The drivers are hustling back and forth, carrying boxes of all shapes and sizes to houses and businesses. It's like a never-ending parade of brown trucks, vans, and cars zipping up and down the streets. What's going on? Why are there so many deliveries happening these days? Let me tell you what I think is behind this booming delivery scene!The biggest reason is something called "online shopping" or "e-commerce." Basically, it means buying things over the internet instead of going to regular stores. My mom does this all the time! She just gets on her laptop or phone, clicks a few buttons, and boom - whatever she wants gets shipped right to our doorstep a couple days later. No driving to the mall, no carrying heavy bags, and no waiting in long checkout lines. It's so convenient!But it's not just my mom. Millions and millions of people all over the world are shopping online nowadays. They purchase everything you can imagine - clothes, toys, books, furniture,electronics, you name it. And once those orders are placed, they all need to be delivered by trucks, vans, and cars criss-crossing cities and neighborhoods making drop-offs. That's why you see so many delivery vehicles on the roads lately. They're bringing everyone's online orders!Online shopping has gotten super popular for a few key reasons. First, it saves a ton of time and hassle compared to going to physical stores. My dad hates wasting his weekends browsing crowded malls and shops when he can just order stuff with a few taps on his phone. Easy peasy! Secondly, you can find way more selection online than any store could ever have in stock. If you're looking for that hard-to-find book, obscure movie, or unique gadget, you're way more likely to find it sold by an online retailer than a regular shop.Thirdly, it's really easy to compare prices online to get the best deals. My parents are always hunting for sales and discounts when shopping on sites like Amazon. Sometimes the savings are huge compared to what things cost in regular stores! And lastly, online shopping is just really cool and futuristic. It makes my friends and me feel so high-tech to have stuff conveniently shipped to our homes at the click of a button.So those are the key reasons online shopping has exploded in popularity over the past decade or so. But how did all those packages actually get delivered in the old days before the internet? Well, there used to be lots of milkmen, breadmen, icemen and other delivery services like that goinghouse-to-house selling their products. My grandparents remember those types of deliveries happening all the time when they were kids. Heck, even after refrigerators and grocery stores became common, there were still companies like Sears that would send out big catalogs to people's homes so they could order merchandise for home delivery.But those old delivery services were nothing compared to the massive scale of online shopping today. I mean, giants like Amazon ship billions of packages worldwide every single year! To handle all those orders, they have massive warehouses and distribution centers working around the clock with armies of workers and cutting-edge technology to get the right items packaged up and dispatched for delivery. That's why you see those Amazon Prime vans cramming your neighborhood all the time.And Amazon is just one company! There are sooo many other online retailers out there like eBay, Walmart, Best Buy, youname it. Plus meal delivery services like GrubHub, grocery delivery, pharmacy delivery, even alcohol delivery in some areas! All those businesses need drivers and vehicles to bring their products right to customer's doors. That's a whole lot of merchandize and food being shuttled every which way these days!So you can probably see why our streets are so jam-packed with delivery trucks and vans now. Online shopping has changed the entire game. Instead of everyone going to centralized stores and markets to buy what they need, we're having more and more of those products brought directly to us at home or work. Some folks say it's making neighborhoods too congested and noisy with all the stop-and-go delivery traffic. Others argue that it's reducing pollution since delivery trucks can do multipledrop-offs in one area way more efficiently than everyone driving themselves all over town to shop.Either way, one thing is for certain - this delivery frenzy isn't going away anytime soon. As a matter of fact, with things like drone delivery and self-driving trucks potentially on the horizon, we may see even MORE delivery activity happening in our communities in the years ahead. I guess my advice would be to get used to those brown trucks ruling the roads! From the looksof things, they're here to stay as our online shopping obsession only grows bigger and bigger. Who knows, maybe I'll end up being a delivery driver myself one day? As long as I get to listen to my tunes and don't have to wear those silly shorts, sign me up!。

英语作文-智能物流系统如何提高配送效率，降低成本In today's fast-paced world, the efficiency and cost-effectiveness of logistics operations are crucial for businesses to stay competitive. One significant innovation that has revolutionized the logistics industry is the implementation of intelligent logistics systems. These systems leverage advanced technologies such as artificial intelligence, big data analytics, and Internet of Things (IoT) to streamline processes, optimize routes, and enhance overall delivery performance. Let's explore how intelligent logistics systems improve delivery efficiency and reduce costs.Firstly, intelligent logistics systems utilize real-time data to optimize route planning and vehicle allocation. By analyzing factors such as traffic conditions, weather forecasts, and delivery schedules, these systems can determine the most efficient routes for each delivery vehicle. This optimization minimizes unnecessary detours and reduces travel time, ultimately improving delivery efficiency. Moreover, by dynamically adjusting routes based on changing conditions, such as traffic congestion or road closures, intelligent logistics systems ensure timely deliveries while minimizing delays and disruptions.Secondly, intelligent logistics systems enhance warehouse management through automation and predictive analytics. By deploying automated storage and retrieval systems (AS/RS) and robotic warehouse solutions, companies can significantly reduce labor costs and improve inventory accuracy. These systems optimize warehouse layout, automate order picking processes, and enable real-time inventory tracking, leading to faster order fulfillment and reduced order processing times. Additionally, predictive analytics algorithms forecast demand patterns and inventory requirements, enabling businesses to optimize stock levels, minimize stockouts, and reduce excess inventory holding costs.Furthermore, intelligent logistics systems enable seamless coordination and collaboration across the entire supply chain ecosystem. By integrating with suppliers, manufacturers, carriers, and retailers, these systems facilitate end-to-end visibility and transparency. Real-time tracking and monitoring capabilities enable stakeholders to track the status of shipments, anticipate potential delays, and proactively resolve issues. Moreover, by sharing relevant data and insights, intelligent logistics systems enable collaborative decision-making and continuous process improvement, leading to greater efficiency and cost savings for all parties involved.Additionally, intelligent logistics systems enhance customer satisfaction through improved delivery reliability and transparency. By providing customers with real-time visibility into the status of their orders, including estimated delivery times and tracking updates, these systems instill confidence and trust. Furthermore, by offering flexible delivery options such as same-day delivery, express delivery, and time-slot delivery, businesses can meet the diverse needs and preferences of their customers. This enhanced visibility and flexibility not only improve the overall delivery experience but also reduce the incidence of missed deliveries and customer complaints.In conclusion, intelligent logistics systems play a pivotal role in enhancing delivery efficiency and reducing costs in the logistics industry. By leveraging advanced technologies and data-driven insights, these systems optimize route planning, streamline warehouse operations, facilitate supply chain collaboration, and enhance customer satisfaction. As businesses continue to embrace digital transformation, intelligent logistics systems will become increasingly indispensable for achieving operational excellence and sustaining competitive advantage in today's dynamic marketplace.。

互联网通信词汇中英对照网络，是用物理链路将各个孤立的工作站或主机相连在一起，组成数据链路，从而达到资源共享和通信的目的。

通信是人与人之间通过某种媒体进行的信息交流与传递。

接下来小编为大家整理了互联网通信词汇中英对照，希望对你有帮助哦!通信适配器 communication adapter交换线路 switched line专用线路 dedicated line简称“专线”。

租用线路 leased line数据高速通道 data highway干线电缆 trunk cable光耦合器 photo-coupler光纤 optical fiber光隔离器 opto-isolator屏蔽双绞线 shield twisted pair, STP非屏蔽双绞线 unshield twisted pair, UTP线缆 cable时延 time delay超时 time-out把关器 watchdog又称“监视定时器”。

重复次数计数器 repeat counter包交换数据网 packet switched data network, PSDN又称“分组交换数据网”。

包交换公用数据网packet switched public data network, PSPDN又称“分组交换公用数据网”。

电路交换数据网 circuit switched data network, CSDN电路交换公用数据网circuit switched public data network, CSPDN交换虚拟网 switched virtual network虚拟专用网 virtual private network,帧中继网 frame relaying network, FRN数字数据网 digital data network, DDN存储转发网 store-and-forward network转接网 transit network网元 network element, NE连网 networking认可的运营机构 recognized operating agency, ROA面向连接协议 connection-oriented protocol网际互连协议 internetworking protocol平衡型链路接入规程 link access procedure balanced, LAPB多协议 multiprotocol协议转换 protocol conversion协议映射 protocol mapping协议实体 protocol entity协议栈 protocol stack协议套 protocol suite分组层 packet layer相当于开放系统互连的网络层。