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所在平台: Udemy |
课程主页: https://www.udemy.com/course/computer-network-osi-model-7-layers-practice-tests-exam-interview/
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**课程名称：** CompTIA Network+ 认证考试 OSI 模型练习测试 **课程概述：** 本课程专为准备 CompTIA Network+ 认证考试的学生设计，重点在于帮助您深入理解计算机网络中的OSI（开放系统互连）七层模型。OSI 模型是一个参考模型，它描述了信息如何从一个计算机的软件应用程序通过物理介质传输到另一个计算机的软件应用程序。 课程详细介绍了OSI模型的七个层次，包括： * **物理层：** 负责传输单个比特流，是OSI模型的最低层，涉及线路配置、数据传输、拓扑和信号。 * **数据链路层：** 负责物理寻址、流量控制、错误控制和访问控制。 * **网络层：** 负责互联网互联、寻址、路由和分组。 * **传输层：** 负责服务点寻址、分段与重组、连接控制、流量控制和错误控制。 * **会话层：** 负责对话控制和同步。 * **表示层：** 负责数据翻译、加密和压缩。 * **应用层：** 提供文件传输、访问和管理（FTAM）以及邮件服务等功能。 **课程特色：** * **3套完整的练习测试：** 共包含90道题目，全面覆盖OSI七个层次的重要知识点。 * **快速友好的支持：** 在问答区提供帮助。 * **30天无理由退款保证。** * **终身访问课程更新。** * **终身支持。** **课程详情：** 本练习测试部分包含三个主要的测试集： * **OSI七层模型练习测试 - 套餐一：** 30道选择题，要求15分钟内完成，通过率为70%。 * **OSI七层模型练习测试 - 套餐二：** 30道选择题，要求15分钟内完成，通过率为70%。 * **OSI七层模型练习测试 - 套餐三：** 21道选择题，要求10分钟内完成，通过率为70%。 **练习模式亮点：** * 可随时暂停和恢复测试。 * 可不限次数地重复进行测试。 * 进度条显示当前进度和剩余时间，超时仍可完成测试。 * 可跳过题目，在最后统一回顾。 * 提供“标记复审”功能，方便回顾不确定的题目。 * 按下停止按钮可立即查看测试结果。 **重要提示：** 本课程题目仅用于练习和巩固理解，不保证与实际考试或面试题目完全一致，但能有效提升您的考试相关知识水平。
Computer network: is a set of devices connected through links. A node can be a computer, printer, or any other device capable of sending or receiving the data.OSI stands for Open System Interconnection is a reference model that describes how information from a software application in one computer moves through a physical medium to the software application in another computer.OSI consists of Seven Layers, and each layer performs a particular network function.Characteristics of OSI Model:The OSI model is divided into two layers: upper layers and lower layers.Functions of the OSI LayersThere are seven OSI layers. Each layer has different functions. A list of seven layers are given below:Physical LayerData-Link LayerNetwork LayerTransport LayerSession LayerPresentation LayerApplication LayerPhysical layer: The main functionality of the physical layer is to transmit the individual bits from one node to another node. It is the lowest layer of the OSI model.Functions of a Physical layer: Line Configuration, Data Transmission, Topology, Signals.Functions of the Data-link layer: Physical Addressing, Flow Control, Error Control, Access Control.Functions of Network Layer: Internetworking, Addressing, Routing, Packetizing.Functions of Transport Layer: Service-point addressing, Segmentation, and reassembly, Connection Control, Flow control error control.Functions of Session layer: Dialog control, SynchronizationFunctions of Presentation layer: Translation, Encryption, Compression:Functions of Application layer: File transfer, access, and management (FTAM), Mail servicesWHAT'S COVERED?In these practice tests, we've included all very important questions of 7 layers OSI model in computer Networks:Physical LayerData-Link LayerNetwork LayerTransport LayerSession LayerPresentation LayerApplication Layer✡What Makes This Course Special✡✔ 3 FULL practice tests, 90 questions total✔ Fast & Friendly Support in the Q & A section.✔30 days money-back guarantee. Without any queries.✔ Lifetime Access to course updates.✔Lifetime support.COURSE DETAILS:CompTIA Network+ Certification Exam OSI Layers Practice Test: Practice Tests for all Exams. It is divided into three Tests.↪ 7 layers OSI Model Practice Test- Set130 questions 15 minutes 70% correct required to pass Multiple-Choice Questions↪ 7 layers OSI Model Practice Test- Set230 questions 15 minutes 70% correct required to pass Multiple-Choice Questions↪ 7 layers OSI Model Practice Test- Set321 questions 10 minutes 70% correct required to pass Multiple-Choice Questions✡WHAT MAKES THIS COURSE SPECIAL✡✔ Fast & Friendly Support in the Q & A section.✔30 days money-back guarantee. Without any queries.✔ Lifetime Access to course updates.✔Lifetime support.Key features of practice sections and model test:➠You can pause the test at any time and resume later.➠You can retake the test as many times as you would like.➠The progress bar at the top of the screen will show your progress as well as the time remaining in the test. If you run out of time, don't worry; you will still be able to finish the test.➠You can skip a question to come back to at the end of the exam.➠You can also use "Mark for Review" to come back to questions you are unsure about before you submit your test.➠If you want to finish the test and see your results immediately, press the stop button.!!!Best of luck!!!✍Note: These questions are only for practice and understanding level of knowledge. It is not necessary that these questions may or may not appear for examinations and/or interview questions, but you will get Exams from these questions for sure.
