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Issc340 Week 4

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Name: ___________________________Date: ____________________ ISSC340 Week 4 Assignment (3% of Grade) Lesson 4 Review: LAN Topologies
The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. What are the two methods that Carrier Sense Multiple Access (CSMA) employs to handle messages that are sent simultaneously? (Min. word count: 15)
Carrier sense multiple access methods are detection where a transmission is cancel when collision is detected and avoidance where transmission is delayed.
Which topology would you use when unable to install network cable? (Min. word count: 15)
Mesh topology because is provides has separate cables for each connection, meaning a cable can break without interfering with the rest of the network. What is inherent in mesh topologies that enable them to provide high reliability? (Min. word count: 20) Mesh topology provides fault tolerance by having separate cables for each connection, allowing any one cable to break without interfering with the rest of the network. What are advantages of star topologies? (Min. word count: 10) Star topology gives great fault tolerance as any device/cable failure will not affect the rest of the network.
Compare the two modes supported by wireless topologies. (Min. word count: 20)
In ad-hoc mode data in the network is transferred to and from wireless network adapters connected to PCs. An infrastructure network enables you to Connect to a wired network.
In this section, consider each description (A through G). Which topology does it describe?
For each item, write one of the following answers:
Bus, Ring, Star, Hybrid, Mesh, Wireless (cell)
A. Fiber Distributed Data Interface (FDDI) uses this topology. Ring
B. Uses an access point when part of a hybrid topology.bus
C. Nodes connect to a central hub or switch. Star
D. Combines two or more standard topologies. Hybrid
E. Uses a hub or media access unit (MAU) in a central location.Star
F. Supports bandwidths of 100 Mbps or more over twisted-pair cable. star
G. Uses token passing as an access method.ring In this section, write your answer in short essay form: Describe the basic features of physical star topologies. Provide as much detail as possible. (Minimum word count: 80)
A network's physical shape is its the design layout, that layout is important when selecting a wiring scheme and designing the wiring for new installations. There are two types of physical topologies point to point and multipoint. Multipoint connections can be a group of computers strung together in a long line on an old-fashioned ThinNet cable, or it could be a party line of telephones, all sharing a common phone connection. A point to point is just a wire or if wireless the space between the two devices.

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