Chapter 9

10 - Which of the following modes are used for Near Field Communications? CARD EMULATION AND PEER-TO-PEER AND Reader/Writer 9.3.4 In this lab, your task is to create a wireless network as follows:  Select a wireless access point that meets the following criteria: o Transmission speeds up to 600 Mbps. o Backwards compatible with other wireless standards that use 2.4GHz.  Install the wireless access point as follows: o Place the wireless access point on the computer desk. o Select the correct cable to connect the wireless access point to a free LAN port on the existing router. o Connect power to the wireless access point through an outlet on the surge protector or wall plate.  Configure the owner's new laptop to connect to the wireless network as follows: o Slide the wireless switch on the front of the laptop to the On position. This will enable the integrated wireless network interface card on the laptop. o Use the default settings as you connect the laptop to the wireless network and save the wireless profile with these settings. Complete this lab as follows: 1. Select and install a wireless access point on the Workspace. a. On the Shelf, expand Wireless Access Points . b. Read the device descriptions to identify the correct wireless access point. c. Drag the Wireless Access Point, 802.11b/g/n to the Workspace. d. Above the wireless access point, select Back to switch to the back view of the wireless access point. 2. Provide power to the wireless access point. a. On the Shelf, expand Cables . b. Select the Power Adapter . c. In the Selected Component window, drag the DC Power Connector to the port on the wireless access point. d. In the Selected Component window, drag the AC Power Adapter end to an outlet on the surge protector. 3. Connect the wireless access point to the router. a. On the Shelf, select the Cat6a cable . b. In the Selected Component window, drag a connector to the Ethernet port on the back of the wireless access point. c. Above the router, select Back to switch to the back of the router. d. In the Selected Component window, drag the other connector to one of the free LAN ports on the router.

SAME SSID, SAME CHANNEL 4 - You have configured a wireless access point to create a small network. You have configured all necessary parameters. Wireless clients seem to take a long time to find the wireless access point. You want to reduce the time it takes for the clients to connect. What should you do? Decrease the beacon interval. 5 - You have configured a wireless access point to create a small network. For security, you have disabled SSID broadcast. From a client computer, you try to browse to find the access point. You see some other wireless networks in the area, but you cannot see your network. What should you do? CONFIGURE A PROFILE ON THE WIRELESS CLIENT 6 - You are designing an update to your client's wireless network. The existing wireless network uses 802.11b equipment, which your client complains runs too slowly. She wants to upgrade the network to run up to 600 Mbps. Due to budget constraints, your client wants to upgrade only the wireless access points in the network this year. Next year, she will upgrade the wireless network boards in her users' workstations. She has also indicated that the system must continue to function during the transition period. Which 802.11 standard will work best in this situation? 802.11N 7 - You are an IT technician for your company. Your boss has asked you to set up and configure a wireless network to service all of the conference rooms. Which of the following features lets you allow or reject client connections by hardware address? MAC ADDRESS FILTERING 8 - Which of the following wireless network protection methods prevents the broadcasting of the wireless network name? SSID BROADCAST

3 - To optimize your network, you want to configure your wireless AP to use a channel that meets the following criteria:  Non-overlapping  Low utilization  Low interference You performed a spectrum analysis to identify 2.4 GHz wireless channel utilization, as shown in the exhibit. (To read the spectrum analysis, imagine a line coming down from the center of the highest point of each wave. For example, the four waves whose crests are over channel 11 belong to channel 11.) Based on the results, which channel should you configure your wireless AP to use? CHANNEL 1 4 - What purposes does a wireless site survey fulfill? Identify the coverage area and preferred placement of access points. AND Identify existing or potential sources of interference. 5 - You need to implement a wireless network link between two buildings on a college campus. A wired network has already been implemented within each building. The buildings are 100 meters apart. Which type of wireless antennae should you use on each side of the link? DIRECTIONAL AND HIGH-GAIN 6 - Which protocol is well known for its use in the the home security and home automation industry, uses a mesh topology, makes devices act as repeaters, and has a low data transfer rate? Z-WAVE 7 - What is the least secure place to locate an access point with an omni-directional antenna when creating a wireless cell? NEAR A WINDOW 8 - Which of the following best describes a site survey? A process of planning and designing a wireless network. 9 - Which of the following best describe a spectrum analyzer? A tool used to determine the noise floor in the desired frequency range. 10 - Which of the following should you include in your site survey test equipment? A TALL LADDER and A SPECTRUM ANALYZER 9.5.4 In this lab, your task is to:  Create a WLAN using the following settings:

3 - Which enterprise deployment has limited mobility and is difficult to manage? INDPENDENT ACCESS POINTS 4 - What is a lightweight access point used for? To route frames between the wireless and wired networks. 5 - As the user moves out of the range of one access point, their wireless device must re-associate with a new access point as it comes within range. What is this process known as? ROAMING 6 - You need to add security for your wireless network. You would like to use the most secure method. Which method should you implement? WPA2 7 - Independent access point infrastructure correct answer: Intelligent AP Hub-and-spoke infrastructure correct answer: Lightweight AP Distributed wireless mesh infrastructure correct answer: Intelligent AP 8 - To enable roaming, network administrators have to configure all access points in the network to comply with which of the following criteria? To function on the same IP subnet. AND To have the same SSID. AND To use the same channel. 9 - Which of the following best describes a hub-and-spoke infrastructure deployment model? A wireless controller is connected to all access points through wired links. The individual APs contain very little embedded intelligence and are sometimes referred to as lightweight access points (LWAPs).

5 - A technician is replacing a SOHO router and has configured DHCP to assign private IP addresses to hosts on the local network. These hosts can communicate with each other, but users can't browse the internet. Which of the following changes to the SOHO router is most likely to restore internet connectivity? Configure the SOHO router for NAT. 6 - Which of the following locations will contribute the greatest amount of interference for a wireless access point? NEAR BACKUP GENERATORS AND NEAR CORDLESS PHONES 7 - A technician is installing a new SOHO wireless router in a home office. The customer wants to secure the wireless network so only a smartphone, tablet, and laptop can connect. Which of the following router settings should the technician change? ENABLE MAC FILTERING 8 - Which of the following is used on a wireless network to identify the network name? SSID 9 - Which of the following is true when the DHCP setting is disabled in a wireless network? Wireless clients must use a static IP address within the correct IP address range to connect to the network. 10 - Manages all of the APs that are connected to it. Wireless controller correct answer: Supports 30 to 50 wireless clients per access point. Wireless controller correct answer: Provides NAT routing and an Ethernet switch in one device. Consumer-grade (SOHO) wireless router correct answer:

Which of the following must you configure manually on the client? Preshared Key AND SSID AND AES 6 - You are the wireless network administrator for your organization. As the size of the organization has grown, you've decided to upgrade your wireless network to use 802.1x authentication instead of using preshared keys. To do this, you need to configure a RADIUS server and RADIUS clients. You want the server and the clients to mutually authenticate with each other. What should you do? Configure the RADIUS server with a server certificate. AND Configure all wireless access points with client certificates. 7 - You are concerned that wireless access points may have been deployed within your organization without authorization. What should you do? Check the MAC addresses of devices connected to your wired switch. AND Conduct a site survey. 8 - An attacker is trying to compromise a wireless network that has been secured using WPA2- PSK and AES. She first tried using AirSnort to capture packets, but found that she couldn't break the encryption. As an alternative, she used software to configure her laptop to function as an access point. She configured the fake access point with the same SSID as the wireless network she is trying to break into. When wireless clients connect to her access point, she presents them with a web page that asks them to enter the WPA2 passphrase. When they do, she uses the password to connect a wireless client to the real access point. Which attack techniques did the attacker use in this scenario? Pharming AND Evil Twin 9 - Your company security policy states that wireless networks are not to be used because of the potential security risk they present to your network. One day, you find that an employee has connected a wireless access point to the network in his office. What type of security risk is this? Rogue access point

Correct answer: None Q8What is the position of the switch for the wireless network interface card? Your answer: Off Correct answer: Off Q9Which wireless networks are available to Exec-Laptop now? Your answer: CorpNet, Starsky, NetGearWireless Correct answer: CorpNet, Starsky, NetGearWireless Q10Which wireless network is Exec-Laptop connected to? Your answer: None Correct answer: None Q11Which know networks are displayed? Your answer: HomeWireless Correct answer: HomeWireless Explanation In this lab, your task is to explore, diagnose, and fix the wireless network configuration problems. Use the following troubleshooting tools:  The Network and Sharing Center in the Windows 10 operating system on a laptop.  The wireless controller interface accessed through Chrome at 192.168.0.6 with the username WxAdmin and password ZDAdminsOnly!$ (O is the letter o). Complete this lab as follows: 1. On ITAdmin, view the wireless controller's configuration interface using Chrome. a. Under IT Administration, select ITAdmin . b. From the taskbar, select Chrome . c. In the URL field, enter 192.168.0.6 and press Enter . d. Maximize the window for easier viewing. e. In the Admin Name field, enter WxAdmin . f. In the Password field, enter ZDAdminsOnly!$ (O is the letter o). g. Select Login . h. Select the Configure tab. i. From the left menu, select WLANs . j. Answer question 1. k. Under WLANs, select Edit in the table under Actions. l. Answer question 2. 2. Identify the wireless connections on Gst-Lap. a. From the navigation tabs at the top, select Floor 1 Overview to switch to Gst- Lap. b. Under Lobby, select Gst-Lap . c. In the notification area, select the wireless network icon. d. Answer questions 3-4. e. Select Start . f. Select Settings . g. Select Network & Internet .

h. Select Wi-Fi . i. Under Wi-Fi, select Manage known networks . j. Answer question 5. k. In the notification area, select the wireless network icon. l. Select the CorpNet wireless network name. m. Select Connect . n. Answer question 6. 3. Identify the wireless connections on Exec-Laptop. a. From the navigation tabs at the top, select Floor 1 Overview to switch to Exec- Laptop. b. Under Executive Office, select Exec-Laptop . c. In the notification area, select the wireless network icon. d. Answer question 7. e. From the navigation tabs at the top, select Floor 1 Overview . f. Under Executive Office, select Hardware . g. Answer question 8. h. Slide the wireless switch to turn the wireless network interface card on. i. On the laptop monitor, select Click to view Windows 10 . j. On Exec-Laptop, select the wireless network icon in the notification area to view the available networks. k. Answer questions 9-10. 4. Manually connect to the CorpNet wireless network. a. Select Start . b. Select Settings . c. Select Network & Internet . d. Select Wi-Fi . e. Under Wi-Fi, select Manage known networks . f. Answer question 11. g. Select HomeWireless . h. Select Forget . i. Select the wireless network icon in the notification area to view the available networks. j. Select the CorpNet wireless network name. k. Select Connect . l. Enter the security key for the wireless network (the security key learned in Step 1l above). m. Select Next . n. Select Yes to make the PC discoverable. Exec-Laptop successfully connected to the CorpNet network. 9.8.7 In this lab, your task is to:  Use the following troubleshooting tools to diagnose the problem in the wireless network:

o Use the Gst-Lap in the Lobby to verify that the wireless access point is working. o Use the wireless controller management interface:  Browser: Chrome  IP address: 192.168.0.6  Username: WxAdmin  Password: ZDAdminsOnly!$ o Use the Network and Sharing Center in the Windows operating system.  Use the troubleshooting tools to confirm the resolution of the problem.  Fix the problem on Exec-Laptop, the wireless controller interface, or both as necessary.  Connect to the CorpNet wireless network. Complete this lab as follows: 1. Under Lobby, select Gst-Lap . 2. In the notification area, select the wireless network icon to view the available networks to verify the problem found on the laptop in the Executive Office. The CorpNet wireless network is displayed in the list of available networks. 3. Select the CorpNet wireless network. 4. Select Connect . 5. Enter @CorpNetWeRSecure!& for the security key and select Next . 6. Select Yes . Gst-Lap is now connected to the CorpNet wireless network. Because Gst-Lap can connect to the wireless network, the problem may be limited to only the Exec-Laptop laptop in the Executive Office. 7. From the top navigation tabs, select Floor 1 Overview to switch to Exec-Laptop. 8. Under Executive Office, select Exec-Laptop . 9. In the notification area, select the wireless network icon to view the available networks. There are no wireless networks shown as available for this laptop. Possible causes for this include: o The wireless network interface card is not turned on (the wireless switch on the exterior of the laptop is in the off position). Since no wireless networks are shown in the list, you must take additional steps. o The wireless network's SSID is not broadcasted. From step 1, you know that the wireless access point is broadcasting the SSID. o The wireless access point is not powered on. From step 1, you know that the wireless access point is powered on. 10. From the top navigation tabs, select Executive Office . 11. On the front of the Exec-Laptop, confirm that the switch for the wireless network interface card is in the On position. The switch is in the off position. 12. Slide the wireless switch to the On position to turn the wireless network interface card on. 13. On the laptop monitor, select Click to view Windows 10 . 14. In the notification area, select the wireless network icon to view the available networks. The CorpNet wireless network is now displayed in the list of available networks. 15. Select the CorpNet wireless network. 16. Select Connect .

17. Enter @CorpNetWeRSecure!& for the security key and select Next . 18. Select Yes . Exec-Laptop is now connected to the CorpNet wireless network. 9.8.8 1 - You need to place a wireless access point in your two-story building. While trying to avoid interference, which of the following is the best location for the access point? ON THE TOP FLOOR 2 - You have physically added a wireless access point to your network and installed a wireless networking card in two laptops running Windows. Neither laptop can find the network, and you have concluded that you must manually configure the wireless access point (AP). Which of the following values uniquely identifies the network AP? SSID 3 - Your wireless network consists of multiple 802.11n access points that are configured as follows:  SSID (hidden): CorpNet  Security: WPA2-PSK using AES  Frequency: 5.75 GHz  Bandwidth per channel: 40 MHz Because of the unique construction of your organization's facility, there are many locations that do not have a clear line of sight between network clients and access points. As a result, radio signals are reflected along multiple paths before finally being received. The result is distorted signals that interfere with each other. What should you do? IMPLEMENT ANTENNA DIVERSITY 4 - You are implementing a wireless network inside a local office. You require a wireless link to connect a laptop in the administrator's office directly to a system in the sales department. In the default configuration, the wireless AP uses a 360-dispersed RF wave design. After installation, the signal between the two systems is weak, as many obstacles interfere with the signal. Which of the following strategies could you try to increase signal strength? Replace the omni-directional antenna with a directional antenna.

5 - While configuring a new 802.11g wireless network, you discover another wireless network within range that uses the same channel ID that you intend to use. Which of the following strategies are you most likely to adopt in order to avoid a conflict between the networks? USE A DIFFERENT CHANNEL ID 6 - You have been hired to troubleshoot a wireless connectivity issue for two separate networks located within a close proximity. Both networks use a WAP from the same manufacturer, and all settings remain configured to the default with the exception of SSIDs. Which of the following might you suspect as the cause of the connectivity problems? OVERLAPPING CHANNELS 7 - Which of the following recommendations should you follow when placing access points to provide wireless access for users within your company building? Place access points above where most clients are. 8 - A user calls to report that she is experiencing intermittent problems while accessing the wireless network from her laptop computer. While talking to her, you discover that she is trying to work from the coffee room two floors above the floor where she normally works. What is the most likely cause of her connectivity problem? The user is out of the effective range of the wireless access point on her floor. 9 - After installing a new 2.4Ghz cordless phone system in your office, you notice that wireless network performance is adversely affected. Which of the following wireless networking standards are you most likely using? 802.11g AND 802.11b 10 - You have decided to conduct a business meeting at a local coffee shop. The coffee shop you chose has a wireless hotspot for customers who want internet access. You decide to check your email before the meeting begins. When you open the browser, you cannot gain internet access. Other customers are using the internet without problems. You are sure your laptop's wireless adapter works because you use a wireless connection at work. What is the likely cause of the problem? A MISMATCHED SSID