Semester 1 Module 5 Cabling LANs and WANs

Ethernet Standards

Cabling Decisions Cabling advantages and disadvantages are based upon the following: Cable length Cost Ease of installation Susceptibility to interference

Ethernet Most widely used networking technology Developed by DIX (Digital, Intel, Xerox) Basis for IEEE specification 802.3u refers to Fast Ethernet (100 Mbps) 802.3z refers to Gigabit Ethernet over fiber 802.3ab refers to Gigabit Ethernet over UTP

10BASE2 Uses 50-ohm _______ cable and is also known as _______ Maximum segment length is _____ Uses a ___ topology Uses a ____ connector coaxial Thinnet 185 m bus BNC

10BASE5 Uses 50-ohm _______ cable and is also known as _______ Maximum segment length is _____ Uses a ___ topology Uses an ____ connector coaxial Thicknet 500 m bus AUI

10BASE-T Uses category 3, 4, or 5 _____ cable. Maximum segment length is _____ Uses a ____ topology Uses an _____ connector UTP 100 m star RJ-45

100BASE-FX Uses category 62.5/125 ____________. Maximum segment length is _____ Uses a ____ topology Uses an ________ connector multimode fiber 400 m star SC or ST

Name It…

5-4-3 Rule between any two nodes on the network, there can only be a maximum of five segments, connected through four repeaters, or concentrators, and only three of the five segments may contain user connections

Hubs _______ - connection point that doesn’t boost or clean up the signal ______ – amplifies the signal before its sent out any port _________ – an active hub with diagnostic capabilities Passive Active Intelligent

Wireless The two most common wireless technologies used for networking are __ and __. Three of the most common wireless standards are _______, ________ and ________. IRRF a802.11b802.11g

Bridges Break up a network into smaller segments. Switches and bridges operate at the ________ layer of the OSI model. When a bridge receives a frame on the network, the destination ___________ is looked up in the bridge table to determine whether to filter, flood, or copy the frame onto another segment. data link MAC address

Switches A switch is a more sophisticated device than a bridge. Ethernet switches are popular connectivity solutions because they improve network speed, bandwidth, and performance. They also operate at much higher speeds than bridges and can support new functionality, such as virtual LANs.

NICs NICs are considered Layer __ devices because each NIC carries a unique code called a _____ address. NICs control host access to the medium. A NIC is also referred to as a network adapter. 2 MAC

Router WAN Connections For long distance communication, WANs use ______ transmission. If the connection is made directly to a service provider, the router will be a data terminal equipment (DTE) and use a DTE serial cable. However, there are occasions where the local router is required to provide the clocking rate and therefore will use a data communications equipment (DCE) cable. serial

Name it… What’s it used for?

Let’s Play Name that cable!

It Connects… A switch to a hub A Cisco router to a switch A Cisco router to a host A host to the console port of a Cisco router A PC to a hub A bridge to a switch A PC to a PC A host to a hub A PC to the AUI of a Cisco router