Nt1210 Chapter 6 Review

3048 WordsJul 27, 201413 Pages
NT1210 Chapter 6 Review Chapter 6 1. An enterprise campus LAN uses wired UTP Ethernet and wireless 802.11 LANs at the edge of the LAN. Looking at a particular floor in a particular building, all the devices connect to either a single Ethernet switch or single wireless access point, both of which sit in a wiring closet in the middle of the space. Which of the following is true about the distance limitations in this LAN? a. All user devices, wired and wireless, can be up to 100 meters away, but no farther. b. All Ethernet user devices can be up to 100 meters away (but no farther), while WLAN devices can typically be farther away than 100 meters. c. All Ethernet user devices can be up to 100 meters away (but no farther), while WLAN devices must typically be closer than 100 meters. d. The Ethernet distances must be decreased to match the maximum distance supported by the wireless LAN. Answer: C. Ethernet UTP standards all support a 100-meter maximum cable length. The 802.11 wireless LAN standards have a coverage area that is typically less than 100 meters. The literal distance depends on conditions in each wireless LAN. The two types of LANs should have little or no impact on the distances allowed by each. 2. IEEE 802.11 standards define a maximum speed for an individual transmission, with some variables that affect 802.11n speeds. Assuming that 802.11n uses the narrower 20-MHz channel and a single stream, which of the following answers matches a particular standard to its maximum bit rate? a. 802.11g: 54 Mbps b. 802.11b: 54 Mbps c. 802.11a: 72 Mbps d. 802.11n: 150 Mbps Answer: C. The maximums are 802.11a: 54 Mbps; 802.11b: 11 Mbps; 802.11g: 54 Mbps; and 802.11n: 72 Mbps, with the specific options mentioned in the question. 3. An enterprise campus LAN uses wired UTP Ethernet and wireless 802.11 LANs at the edge of the LAN. A network engineer uses a WLAN testing

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