思科网络计算机网络双语教程第八章ppt课件

1、 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicITE PC v4.0Chapter 11OSI Physical LayerNetwork Fundamentals Chapter 8ITE PC v4.0Chapter 12 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicObjectivesExplain the role of Physical layer protocols and services in supporting communicatio

2、n across data networks.- Describe the role of signals used to represent bits as a frame as the frame is transported across the local mediaDescribe the purpose of Physical layer signaling and encoding as they are used in networksIdentify the basic characteristics of copper, fiber and wireless network

3、 mediaDescribe common uses of copper, fiber and wireless network media ITE PC v4.0Chapter 13 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Protocols & Services Describe the purpose of the Physical layer in the network and identify the basic elements that enable this lay

4、er to fulfill its functionITE PC v4.0Chapter 14 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Protocols & Services Describe the role of bits in representing a frame as it is transported across the local media.ITE PC v4.0Chapter 15 2007 Cisco Systems, Inc. All rights res

5、erved.Cisco PublicPhysical Layer Protocols & Services Describe the role of signaling in the physical media.ITE PC v4.0Chapter 16 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Protocols & Services Distinguish who establishes and maintains standards for the Physical l

6、ayers compared to those for the other layers of the networkITE PC v4.0Chapter 17 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Protocols & Services Identify hardware components associated with the Physical layer that are governed by standardsITE PC v4.0Chapter 18 2007 C

7、isco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Signaling and Encoding Explain that network communication at this layer consists of individual bits encoded onto the Physical layer and describe the basic encoding techniques.ITE PC v4.0Chapter 19 2007 Cisco Systems, Inc. All rights r

8、eserved.Cisco PublicPhysical Layer Signaling and Encoding Describe the role of encoding as it applies to the transmission of bits and explain the value of treating a collection of bits as a code.ITE PC v4.0Chapter 110 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPhysical Layer Signaling

9、and Encoding Define the terms bandwidth, throughput, and goodput ITE PC v4.0Chapter 111 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Identify several media characteristics defined by Physical layer standards.ITE PC v4.0Chapter 112 2007 Cisco Sy

10、stems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Describe the impact interference has on throughput and the role of proper cabling in reducing interferenceITE PC v4.0Chapter 113 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses

11、 of Network Media Identify the basic characteristics of UTP cableITE PC v4.0Chapter 114 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Identify the basic characteristics of STP and Coaxial cableITE PC v4.0Chapter 115 2007 Cisco Systems, Inc. All

12、rights reserved.Cisco PublicCharacteristics & Uses of Network Media Identify types of safety issues when working with copper cablingITE PC v4.0Chapter 116 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Identify several primary characteristics

13、 of fiber cabling and its main advantages over other mediaITE PC v4.0Chapter 117 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Describe the role of radio waves when using air as the media and the increased need for security in wireless communicationsITE PC v4.0Chapter 118 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicCharacteristics & Uses of Network Media Identify the characteristics used to categorize connectors, describe some common uses for the same connectors, and identify the consequen