Lecture Basic network management: Chapter 4 - Trung tâm Athena

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Lecture Basic network management - Chapter 4: LAN terminology and components. After studying this chapter you will be able to understand: LAN Terminology, LAN transmission media, LAN technology and topology, LAN networking devices.

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Nội dung Text: Lecture Basic network management: Chapter 4 - Trung tâm Athena

Chapter 4: LAN TERMINOLOGY and COMPONENTS ATHENA
Objective  LAN Terminology  LAN transmission media  LAN technology and topology  LAN networking devices ATHENA
LAN Terminology ATHENA
LAN Terminology  LAN Transmission Media • What types of transmission should be used to connect LAN components?  LAN Topology • What will be the shape or topology, that defines the LAN? ATHENA
Transmission Media  Transmission media refers to the type of cable or wireless system that is used to connect network devices: • Coaxial Cable • Twisted Pair – Unshielded twistedpair – Shielded twistedpair • Fiber Optic Cable ATHENA
Transmission Media ATHENA
Coaxial Cable  Coaxial cable consists of central copper wire surrounded by two layer of protective shielding  Inexpensive, light, flexible and easy to work  More resistance to Electromagnetic Interference (EMI) and attenuation ATHENA
Coaxial Cable (2) Attenuation: loss of signal strength along wire ATHENA
Coaxial Cable (3) ATHENA
Types of Coaxial Cable  The two basic classifications for coaxial cable are as follows: • Thinnet • Thicknet ATHENA
Thinnet  Thinnet is a flexible cabling medium that is inexpensive and easy to install  Thinnet is approximately 0.25 inches (0.5cm)  Thinnet can transmit a signal for 185 meters (610 feet) ATHENA
Thicknet  Thicknet coaxial cable is approximately 0.5 inches (1.3cm)  Thicknet can transmit approximately 500 meters (1650 feet)  Copper core thicker than Thinnet core ATHENA
Thicknet (2) ATHENA
Connection Hardware  The most common is the British Naval Connector (BNC): • BNC cable connector • BNC Tconnector • BNC barrel connector • BNC terminator ATHENA
Connection Hardware (2) BNC cable connector ATHENA
Connection Hardware (3) BNC Tconnector: connects the network interface card in the PC to the network cable ATHENA
Connection Hardware (4) BNC barrel connector: connects two thinnet cable segments into longer segment ATHENA
Connection Hardware (5) BNC terminator: closes end cable to stop signal ATHENA
Twisted Pair Twoinsulated strands of copper wire twisted around each other There are 2 categories of twisted pair: • Shielded twisted pair (STP) • Unshielded twisted pair (UTP) ATHENA
Twisted Pair STP UTP ATHENA