ITS170-hw11 (1)

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Purdue University, Northwest *

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170

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Computer Science

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Dec 6, 2023

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ITS 170 Homework 11 Please put Course number, your Full Name, Assignment number on top right. Submit your homework on the Brightspace. Make your file name as “ITS170-hw11-FirstName-LastName.{doc, docx}”. Please show all your work for full or partial credit. 1. Review question 3 in Ch. 11 (5 points) What are some of the Concerns with using wireless networks? Security, Utilizing wireless networks raises serious security concerns. Speed, The wireless network's speed is less rapid than that of wired networks. Prone to Interference. 2. Review question 4 in Ch. 11 (5 points) What are ISM frequency bonds? Why are they useful? 900, 2400, and 5000 MHz the use of radio frequency (RF) energy for industrial, scientific, and medical uses for other purposes other than telecommunications. 3. Review question 5 in Ch. 11 (5 points) What are some differences between wired and wireless LANs? How do they impact the design of the wireless LAN header? Wired LANs tend to be much faster, more reliable, provide better security, and deliver more bandwidth than their wireless counterparts . The most important differences is that wireless LANs have no defined boundaries . 4. Review question 6 in Ch. 11 (5 points) What is a basic service set? A basic service area? A Basic Service Set (BSS) forms an ad hoc self-contained network with station-to-station traffic flowing directly, receiving data transmitted by another station. The physical area of coverage provided by an access point in a BSS 5. Review question 8 in Ch. 11 (5 points) What is a distribution system in wireless Lan? a method of interconnecting access points (AP) in a wireless local area network (LAN) without requiring that they connect through a wired backbone . 6. Review question 9 in Ch. 11 (5 points) What is an extended service set? A wireless topology that incorporates two or more wireless access points which then provide extended wireless coverage across the network . 7. Review question 10 in Ch. 11 (5 points) What is a portal in a wireless LAN? a webpage that displays the terms and conditions of using a Wi-Fi network to a newly connected user . 8. Review question 11 in Ch. 11 (5 points) What are some differences between the physical layers in wireless and wired LANs? The most important difference between wireless and wired LANs is that wireless LANs have no defined boundaries. An Ethernet wall jack is hardwired to a specific port on a specific switch. When you connect to the network through a wall jack, you become part of a well-defined network. On the other hand, wireless networks can overlap and they often do.

9. Review question 14 in Ch. 11 (5 points) What are personal area networks? How are they different from LANs? a PAN connects the devices within the short range of an individual person, whereas a LAN connects devices at a single site, typically an office building . Similar to a PAN, a LAN can be both wired and wireless.

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