Overview

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.

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