DBDC2623
Learning & Revision Hub — July 2026 学习与复习中心 — 2026年7月
Welcome to the DBDC2623 Learning Hub. This portal guides you through the 14-week course schedule, linking core lecture notes, dynamic visualizations of networking concepts, practical Packet Tracer and Wireshark exercises, and structured assessments. Explore each week's content to prepare for your quizzes, tests, and final exam.
欢迎来到 DBDC2623 学习中心。本主页引导您了解为期 14 周的课程安排,链接æ
Explore the history of data processing, centralized database drawbacks, and the rise of distributed architectures. 探索数据处理的历史、集中式数据库的局限以及分布式架构的兴起。
Analyze business information requirements, corporate data growth, and DNS/HTTP packet capture structures in Wireshark. 分析业务信息需求、企业数据增长,以及 Wireshark 中的 DNS/HTTP 数据包捕获结构。
Differentiate transmission parameters for audio, data, and video. Calculate network throughput vs. goodput. 区分音频、数据和视频的传输参数。计算网络吞吐量 (Throughput) 与有效吞吐量 (Goodput)。
Study DDP topologies (horizontal/vertical partitioning), database replication, and Cisco OSPF configurations. 研究 DDP 拓扑(水平/垂直分区)、数据库复制,以及 Cisco OSPF 动态路由配置。
Understand network implications, Big Data architectures (Kafka/HDFS/Spark), and take continuous assessment 1. 了解 DDP 网络影响、大数据架构(Kafka/HDFS/Spark),并进行阶段评估 1。
Analyze signal propagation, transmission impairments, and apply Nyquist and Shannon channel capacity theorems. 分析信号传播、传输损耗,并应用奈奎斯特和香农信道容量定理进行计算。
Study analog/digital transmissions, and line encoding techniques: NRZ-L, Manchester, and Differential Manchester. 研究模拟与数字传输,以及线路编码技术:NRZ-L、曼彻斯特和差分曼彻斯特编码。
17 Aug - 23 Aug 2026
No classes scheduled. Rest and review previous chapters. 没有课程安排。休息并复习之前的章节。
Examine async vs. sync transmissions and error detection mechanisms (Parity checking, modulo-2 CRC math). 分析异步与同步传输,以及差错检测机制(奇偶校验、模 2 循环冗余校验 CRC 计算)。
Learn DNS structure and DHCP DORA address allocation. Perform the mid-semester assessment 2. 了解 DNS 层次结构和 DHCP DORA 地址分配。进行期中阶段评估 2。
Understand the client/server design, thin vs. thick client limits, 3-tier architectures, and connection ports in Wireshark. 理解客户机/服务器设计、薄/厚客户端界限、三层架构,以及 Wireshark 中的数据库连接端口。
Differentiate Intranets and Extranets. Explore Service Oriented Architecture (SOA) and cloud models (SaaS/PaaS/IaaS). 区分内联网与外联网。探索面向服务架构 (SOA) 以及云服务模型(SaaS/PaaS/IaaS)。
Analyze SMTP, POP3, and IMAP email flows, HTTP/HTTPS security, and TLS handshake exchanges in Wireshark. 分析 SMTP、POP3 和 IMAP 邮件流、HTTP/HTTPS 安全性,以及 Wireshark 中的 TLS 握手交互。
Study LAN topologies (Bus, Star), media types, CSMA/CD, and CSMA/CA. Submit the Case Study Report. 研究局域网拓扑(总线型、星型)、介质类型、CSMA/CD 和 CSMA/CA。提交案例分析报告。
Identify Layer 1, 2, and 3 networking devices (Hubs, Switches, Routers). Deliver the Case Study Presentation. 识别第 1、2 和 3 层网络设备(集线器、交换机、路由器)。进行案例分析演示。