5 Assignment : Ethernet LANs Review Chapter Review Questions: 1. C 2. D 3. B 4. A 5. B 6. E 7. D 8. A & D 9. A & C 10. A & D 11. C 12. C & D 13. C 14. A & C 15. A 16. A & B 17. D 18. C 19. B 20. C Key Terms: Ethernet LANs: collection of devices which use IEEE Ethernet standards at the physical and data link layers‚ so that the devices can send Ethernet frames to each other 802.3: the name of the original IEEE Ethernet standard‚ as well as the overall base name of all IEEE Ethernet LAN working committees
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performance‚ low latency‚ and high port density. As long as Layer 2 switch frames between two Layer 1 interfaces of the same media type‚ such as two Ethernet connection or an Ethernet connection and a Fast Ethernet connection‚ the frames do not have to be modified. However‚ if two interfaces are different media‚ such as Ethernet and Token Ring or Ethernet and Fibre Distributed data Interface (FDDI)‚ the Layer 2 switch must translate the frame contents before sending out the Layer 1 interface.
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Exercises 8-3 You have been hired by a small company to install a backbone to connect four 100base-T Ethernet LANs (each using one 24-port hub) and to provide a connection to the Internet. Develop a simple backbone and determine the total cost (i.e.‚ select the backbone technology and price it‚ select the cabling and price it‚ select the devices and price them‚ and so on). Prices are available at www.datacommwarehouse.com‚ but use any source that is convenient. For simplicity‚ assume that category
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Answer These Questions 1. Which of the following types of LANs was a competitor of Ethernet LANs from the earliest days of wired LANs in the 1980s and into the 1990s? a. ATM b. FDDI c. Token Ring d. Metro Ethernet 3. Which of the following speeds are not defined as a speed by some Ethernet LAN standard? a. 1 Gbps b. 4 Gbps c. 10 Gbps d. 40 Gbps 5. A campus LAN drawing shows hundreds of user devices cabled to LAN switches on various floors of a building. The per-floor edge switches
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length 窗体底端 - Runt On Ethernet networks‚ the hexadecimal address FF-FF-FF-FF-FF-FF represents the ___ MAC address. - broadcast What is a characteristic of a contention-based access method? - It is a nondeterministic method. Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario‚ what will happen next? - RT1 will send an ARP reply with its own Fa0/0 MAC address. Refer to the exhibit. What is the destination MAC address of the Ethernet frame as it leaves
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widely-installed local area network technology is the Ethernet. It is most widely used system of connecting different computers in a LAN network. Today Ethernet is officially determined as IEEE 802.3 for the industry standard. In 1976 from a previous specification called Alohanet‚ Ethernet was originally developed by Xerox PARC. Later‚ it was further developed by the other companies like INTEL‚ DEC‚ AND Xerox. Wire is used to connect the devices in Ethernet. Coaxial cable or special grades of twisted pair
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and implementation of various link layer technologies 5: DataLink Layer 5-1 Link Layer ❒ ❒ ❒ ❒ ❒ 5.1 Introduction and services 5.2 Error detection and correction 5.3Multiple access protocols 5.4 Link-Layer Addressing 5.5 Ethernet 5.6 Hubs and switches ❒ 5.7 PPP ❒ 5.8 Link Virtualization: ATM and MPLS ❒ 5: DataLink Layer 5-2 Link Layer: Introduction Some terminology: “link” ❒ hosts and routers are nodes ❒ communication channels that connect adjacent
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A. A star bus topology or a hybrid topology 2. Place the following networking technologies in the order of their highest speed‚ from slowest to fastest: WiMAX‚ Dial-up networking‚ Cable Internet‚ Fast Ethernet‚ and 3G? A. Dial-up networking‚ 3G‚ cable Internet‚ WiMAX‚ Fast Ethernet 3. What is the difference between ADSL and SDSL? A. ADSL uses one upload speed from the consumer to an ISP and a faster download speed. SDSL uses equal bandwidths in both directions. 4. Among satellite
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References: LAN Solutions Guide for Primary and Secondary Systems http://www.cisco.com/en/US/products/hw/switches/ps646/products_quick_reference_guide09186a00800a8484.html Real-Time Ethernet 1 Introduction to Real Time Electronic Control Systems [1] Liu‚ J. Real-time Systems; Prentice Hall Inc.‚ 2000; ISBN: 0130996513.
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described according to the LAN architecture features described in Chapter 1— transmission medium‚ topology‚ access control‚ transmission technique and speed. Under the heading of traditional LAN technologies‚ the following will be examined: • ARCnet. • Ethernet. • Token-ring. • AppleTalk. The world of LANs is dynamic‚ and while certain technologies have earned wide acceptance in the marketplace‚ newer ones are always being introduced. ARCnet (Attached Resource Computing Network) was developed by John Murphy
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