Chapter 10 Study Guide
Distributed wireless mesh infrastructure
Which of the following enterprise wireless deployment models uses access points with enough intelligence to allow the creation of guest WLANs for keeping public wireless traffic separate from private traffic?
Encryption
Which of the following features are supplied by WPA2 on a wireless network?
Use a different channel ID.
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?
Groups wireless devices together into the same logical network.
Which of the following is true of a wireless network SSID?
Disable SSID broadcast
Which of the following measures will make your wireless network invisible to the casual attacker performing war driving?
802.1x WPA
Which of the following protocols or mechanisms is used to provide security on a wireless network? (Select three.)
WPA
Which of the following provides security for wireless networks?
Place access points above where most clients are.
Which of the following recommendations should you follow when placing access points to provide wireless access for users within your company building?
WEP, WPA Personal, and WPA2 Personal
Which of the following wireless security methods uses a common shared key configured on the wireless access point and all wireless clients?
Z-Wave
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?
Eight MIMO radio streams 160 MHz bonded channels
Which technologies are used by the 802.11ac standard to increase network bandwidth? (Select two.)
DS
Which wireless networking component is used to connect multiple APs together?
Consumer-grade (SOHO) wireless router
Provides NAT routing and an Ethernet switch in one device.
Wireless controller
Pushes wireless configuration settings to connected access points.
Building 1 - Location D
Right-facing high-gain directional antenna WPA2 with CCMP
The user is out of the effective range of the wireless access point on her floor.
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 client system has moved too far away from the access point.
A user on your network has been moved to another office down the hall. After the move, she calls you complaining that she has only occasional network access through her wireless connection. Which of the following is most likely the cause of the problem?
The wireless TV system
A wireless television distribution system running at 2.4 GHz A wireless phone system running at 5.8 GHz A wireless phone system running at 900 MHz An 802.11a wireless network running in the 5.725 - 5.850 GHz frequency range An 802.11j wireless network running in the 4.9 - 5.0 GHz frequency range Since this equipment was installed, your wireless network has been experiencing significant interference. Which system is to blame?
802.11b 802.11g
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? (Select two.)
CSMA/CA
All of the 802.11 standards for wireless networking support which type of communication path sharing technology?
Hub
An access point that conforms to the IEEE 802.11b standard behaves similarly to what other networking device?
Pharming Evil twin
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 asking them to enter the WPA2 passphrase. When they do, she then uses it to connect a wireless client to the real access point. Which attack techniques did the attacker use in this scenario? (Select two.)
VLAN pooling
Automatically partitions a single broadcast domain into multiple VLANs.
DSSS
Breaks data into pieces and sends the pieces across multiple frequencies in a defined range.
OFDM
Breaks data into very small data streams in order to send the information across long distances.
Bounce
Causes multiple copies of the same radio signal to be received by the receiving antenna.
Spectrum analysis
Checks channel utilization and identifies sources of RF inference.
Signal to noise ratio
Compares the level of the Wi-Fi signal to the level of background radio signals.
10.4.8 Design an Outdoor Wireless Network
Complete this lab as follows: On the Shelf, expand the High-gain Antennas category. Drag the High-gain Antenna (Directional) to the installation area on the roof of Building A. Drag the remaining High-gain Antenna (Directional) to the installation area on the roof of Building B. On the Shelf, expand the Wireless Access Points category. Drag the Wireless Access Point (Outdoor) to the installation area on the roof of Building A. Drag the remaining Wireless Access Point (Outdoor) to the installation area on the roof of Building B. On the Shelf, expand the WAP Antennas category. Drag the WAP Antenna (Directional) to one of the installed outdoor WAPs. Drag the remaining WAP Antenna (Directional) to the other installed outdoor WAP. To complete the lab, select Done.
10.4.7 Design an Indoor Wireless Network
Complete this lab as follows: On the Shelf, expand the Wireless Access Points category. Drag the Wireless Access Point (Omnidirectional Antenna) to the installation area in the Lobby. Drag one of the Wireless Access Point (Directional Antenna) to the installation area on the west wall of the IT Administration office. Drag another Wireless Access Point (Directional Antenna) to the installation area on the east wall of the Networking Closet. To complete the lab, select Done.
10.7.7 Troubleshoot Wireless Network Problems
Complete this lab as follows: Under IT Administrator, select IT-Laptop. 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. Select the CorpNet wireless network. Select Connect. Enter @CorpNetWeRSecure!& for the security key and select Next. Select Yes.IT-Laptop is now connected to the CorpNet wireless network. Because IT-Laptop can connect to the wireless network, the problem may be limited to only the Exec-Laptop laptop in the Executive Office. From the top navigation tabs, select Floor 1 Overview to switch to Exec-Laptop. Under Executive Office, select Exec-Laptop. 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: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.The wireless network's SSID is not broadcasted. From step 1, you know that the wireless access point is broadcasting the SSID.The wireless access point is not powered on. From step 1, you know that the wireless access point is powered on. From the top navigation tabs, select Floor 1 Overview to switch to the Exec-Laptop. Under Executive Office, select Hardware. 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. Slide the wireless switch to the On position to turn the wireless network interface card on. On the laptop monitor, select Click to view Windows 10. 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. Select the CorpNet wireless network. Select Connect. Enter @CorpNetWeRSecure!& for the security key and select Next. Select Yes.Exec-Laptop is now connected to the CorpNet wireless network.
10.6.6 Secure an Enterprise Wireless Network
Configure the security features on your wireless controller as follows: Change the admin username and password as follows:From the taskbar, open Internet Explorer.Maximize Internet Explorer.Type 192.168.0.6 and press Enter.Enter admin.Enter password.Select Login.From the top, select the Administer tab.Ensure Authenticate using the admin name and password is selected.In the Admin Name field, enter WxAdmin.In the Current Password field, enter password.In the New Password field, enter ZDAdminsOnly!$ (Note: O is the capital letter O).In the Confirm New Password field, enter ZDAdminsOnly!$.On the right, select Apply. Enable MAC address filtering as follows:From the top, select the Configure tab.From the left menu, select Access Control.Expand L2-L7 Access Control.Under L2/MAC address Access Control, select Create New.In the Name field, enter Allowed Devices.Under Restriction, make sure Only allow all stations listed below is selected.Enter a MAC address.Select Create New.Repeat steps 2g-2h for each MAC address you would like to add to the ACL.Click OK. Configure access controls as follows:In Access Control, expand Device Access Policy.Select Create New.In the Name field, enter NoGames.Select Create New.Use the OS/Type drop-down list to select Gaming.Use the Type drop-down to select Deny.Under Uplink, ensure Disabled is selected.Under Downlink, ensure Disabled is selected.Click Save.Click OK.
10.7.5 Optimize a Wireless Network
Configure your wireless access points as follows: Configure Self Healing as follows:From the top, select the Configure tab.From the left menu, select Services.Select Automatically adjust AP radio power to optimize coverage when interference is present.Under Automatically adjust 2.4GHz channels using, select Background Scanning from the drop-down menu.Under Automatically adjust 5GHz channels using, select Background Scanning from the drop-down menu.On the right, click Apply. Configure Background Scanning as follows:Select Run a background scan on 2.4GHz radio.Enter 30 seconds.Select Run a background scan on 5GHz radio.Enter 30 seconds.On the right, click Apply. Configure Load Balancing as follows:Select Run load balancing on 2.4GHz radio.In the Adjacent radio threshold(dB) field, enter 40.Select Run load balancing on 5GHz radio.In the Adjacent radio threshold(dB) field, enter 40.On the right, select Apply. Configure Band Balancing as follows:Select Percent of clients on 2.4GHz radio.Enter the percentage.On the right, click Apply. Adjust the AP Power Level as follows:From the left menu, select Access Points.From the top right, select Exhibit to determine which access points to adjust.Select Edit next to the access point to be modified.Under Radio B/G/N(2.4G) next to TX Power, make sure Override Group Config is selected.From the TX Power drop-down list, select -3dB (1/2).Under Radio A/N/AC(5G) next to TX Power, make sure Override Group Config is selected.From the TX Power drop-down list, select -3dB (1/2).Click OK.Repeat steps 6b - 6f for additional access points.
Wireless bridge
Connects two wired networks over a Wi-Fi network.
10.5.4 Implement an Enterprise Wireless Network
Create a WLAN on the wireless controller as follows: From the taskbar, open Internet Explorer. In the URL field, enter 192.168.0.6 and press Enter. Log in to the wireless controller console with username admin and password password. Select the Configure tab. From the left menu, select WLANs. Under WLANs, select Create New. In the Name field, enter the network name. In the ESSID field, enter the ESSID for the network. Under Type, make sure Standard Usage is selected. Under Authentication Options, make sure Open is selected. Under Encryption Options, select WPA2. Under Encryption Options/Algorithm, make sure AES is selected. In the Passphrase field, enter the passphrase for the network. Click OK. Using the location tabs at the top of the screen, select Floor 1. In the Executive Office location, select Exec-Laptop. In the notification area, select the wireless network icon to view the available networks. Select CorpNet. Select Connect. Enter @CorpNetWeRSecure! for the security key; then click Next. Click Yes to make the computer discoverable on the network.
Device saturation
Degrades wireless network performance.
Intelligent AP
Distributed wireless mesh infrastructure
Heat map
Graphically displays wireless signal strength within an area.
23
How many total channels are available for 802.11a wireless networks?
11
How many total channels are available for 802.11g wireless networks?
Lightweight AP
Hub-and-spoke infrastructure
Received signal level
Identifies how strong a radio signal is at the receiver.
Heat map
Identifies relative strength of a radio signal at the receiver.
N/A
Identifies the number of useful bits delivered from the sender to the receiver.
10.7.6 Explore Wireless Network Problems
In this lab, you should have noted the following: Identify the wireless connections on the IT-Laptop as follows:Under IT Administration, select IT-Laptop.In the notification area, select the wireless network icon.Which wireless networks are available to IT-Laptop? Which wireless network is IT-Laptop connected to?Select Start.Select Settings.Select Network & Internet.Under Wi-Fi, select Manage known networks.Which know networks are displayed?Select HomeWireless.Select Forget. On ITAdmin, view the wireless controller's configuration interface using Internet Explorer:From the navigation tabs at the top, select Floor 1 Overview to switch to the ITAdmin computer.Under IT Administration, select ITAdmin.From the taskbar, select Internet Explorer.In the URL field, enter 192.168.0.6 and press Enter.In the Admin Name field, enter WxAdmin.In the Password field, enter ZDAdminsOnly!$ (O is the letter o).Select Login.Select the Configure tab.From the left menu, select WLANs.What is the name of the corporate WLAN?Under WLANs, select Edit in the table under Actions.What is the passphrase used for the WLAN security key? Identify the wireless connections on Gst-Lap as follows:From the navigation tabs at the top, select Floor 1 Overview to switch to Gst-Lap.Under Lobby, select Gst-Lap.In the notification area, select the wireless network icon.Which wireless networks are available to Gst-Lap? Which wireless network is Gst-Lap connected to?Select Start.Select Settings.Select Network & Internet.Under Wi-Fi, select Manage known networks.Which known networks are displayed?In the notification area, select the wireless network icon.Select the CorpNet wireless network name.Select Connect.Why did Gst-Lap connect without you entering the security key? Identify the wireless connections on Exec-Laptop as follows:From the navigation tabs at the top, select Floor 1 Overview to switch to Exec-Laptop.Under Executive Office, select Exec-Laptop.In the notification area, select the wireless network icon.What wireless networks are available to Exec-Laptop?From the navigation tabs at the top, select Floor 1 Overview.Under Executive Office, select Hardware.Above the laptop, select Front to switch to the front view of the laptop and observe the switch for the wireless network interface card.What is the position of the switch for the wireless network interface card?Select the wireless switch to turn the wireless network interface card on.On Exec-Laptop, select the wireless network icon in the notification area to view the available networks.Which wireless networks are available to Exec-Laptop now?Manually connect to the CorpNet wireless network as follows:Select the CorpNet wireless network name.Select Connect.Enter the security key for the wireless network (the security key learned in Step 7 above) and click Next.Click Yes to make the PC discoverable.Exec-Laptop successfully connected to the CorpNet network.
10.3.5 Secure a Home Wireless Network
In this lab, your task is to complete the following: Change the settings on the wireless access point using:SSID: PoliceVan (the SSID name is case sensitive).Authentication: WPA2-PSK.Encryption: AES.Security key: 4WatchingU (the security key is case sensitive). Change the wireless access point's administrator authentication credentials from their defaults using the following settings:Username: @dm1nPassword: StayOut! (O is the capital letter O).Do not save the credentials in Internet Explorer. Configure the laptop to connect to the wireless network and save the wireless profile settings as listed above. Complete this lab as follows: Change the settings on the wireless access point as follows:In the URL field of Internet Explorer, enter 192.168.0.254 and press Enter.In the username field, enter admin as the username.In the password field, enter password as the password.Select OK.Maximize Internet Explorer.Select Wireless > Basic on the left.In the Wireless Name (SSID) field, enter PoliceVan.Scroll down and select Apply.In the username field, enter admin as the username.In the password field, enter password as the password.Select OK.In the left menu, under Wireless, select Security.From the Security Mode options, select WPA2-PSK.In WPA Algorithms, make sure AES is selected.In the Pass Phrase field, enter 4WatchingU.Select Apply. Change the wireless access point's administrator authentication credentials as follows:From the left menu, select Administrator.Select Management.In the Account field, enter @dm1n as the username.In the Password field, enter StayOut! (O is the capital letter O).Select Apply. Configure the laptop to connect to the wireless network and save the wireless profile settings as follows:From the navigation tabs at the top, select Computer Desk.On the Home-Laptop monitor, select Click to view Windows 10.Select the Network icon.Select PoliceVan.Make sure Connect automatically is selected.Select Connect.Enter the security key (pass phrase).Select Next.Select Yes to make your PC discoverable on the network.Right-click the Network icon and select Open the Network and Sharing Center to confirm the connection.
10.3.6 Configure Wireless Profiles
In this lab, your task is to perform the following: Manually create a wireless network profile on the laptop as follows:Network name (SSID): PoliceVan (the SSID name is case sensitive.)Security type: WPA2-Personal.Encryption type: AES.Security Key/Passphrase: 4WatchingU (the security key is case sensitive.)Start the connection automatically.Connect even if the network is not broadcasting. Delete the out-of-date TrendNet-BGN wireless profile. Complete this lab as follows: Manually create the wireless network profile on the laptop as follows:Right-click the Network icon in the notification area and select Open Network and Sharing Center.Select Set up a new connection or network.Select Manually connect to a wireless network; then click Next.Enter the network name.Select the security type from the drop-down list.Make sure AES is selected as the encryption type.Enter the security key.Make sure Start this connection automatically is selected.Select Connect even if the network is not broadcasting; then click Next.Click Close. Delete the out-of-date profile as follows:Select the Network icon in the notification area.Select Network settings.Select Manage known networks.Select the network to be deleted from the list.Select Forget.
Intelligent AP
Independent access point infrastructure
Building 1 - Location C
Left-facing directional antenna WPA2 with CCMP
Building 2 - Location B
Left-facing high-gain directional antenna WPA2 with CCMP
Wireless controller
Manages all of the APs that are connected to it.
Set the channel used by access point B to 11. Set access point B to use 802.11n wireless networking.
Mobile devices in your organization use the access points shown in the figure below to connect to your wireless network. Recently, a catastrophic early morning power surge occurred. It was followed by an outage that lasted longer than your backup equipment could supply temporary power. After you powered the equipment back on, everything initially appeared to work correctly. However, ever since this event, some mobile users report that wireless network connections sometimes get dropped or perform very poorly. What should you do? (Select two.)
Roaming
Moving an wireless device between access points within the same wireless network.
Building 2 - Location A
Omni-directional antenna WEP with open authentication
Building 1 - Location B
Omni-directional antenna WPA2 with CCMP
Building 1 - Location A
Right-facing directional antenna WPA2 with CCMP
Device density
Specifies the number of clients that utilize the wireless network.
Wireless controller
Supports 30 to 50 wireless clients per access point.
Consumer-grade (SOHO) wireless router
Supports a maxiumum of 5-10 wireless clients.
Goodput
The number of useful bits delivered from sender to receiver within a specified amount of time.
10.3.4 Create a Home Wireless Network
To complete this lab, you must perform the following: Place the 802.11b/g/n wireless access point on computer desk. The 802.11b/g/n wireless access point has transmission speeds up to 600 Mbps and is backwards compatible with other wireless standards which use 2.4GHz. Connect an Ethernet twisted pair cable to the Ethernet port on the wireless access point and to a free LAN Port on the existing router. Provide power to the wireless access point. Slide the wireless switch on the front of the laptop to the on (On) position. This will enable the integrated wireless network interface card on the laptop. Connect the laptop to the TrendNet-BGN wireless network. Create a wireless network profile while connecting to the wireless network. Complete this lab as follows: On the Shelf, expand the Wireless Access Points category. Read the device descriptions to identify the correct wireless access point. Drag the wireless access point to the computer desk. Switch to the back view of the wireless access point. To plug in the wireless access point, expand the Cables category on the Shelf. Select the power adapter. In the Selected Component window, drag the DC power connector to the port on the wireless access point. In the Selected Component window, drag the AC power adapter end to an empty outlet on the surge protector or the wall outlet. To connect the wireless access point to the router, select the Cat5e cable on the Shelf. In the Selected Component window, drag a connector to the Ethernet port on the back of the wireless access point. Switch to the back of the router. In the Selected Component window, drag the other Cat5e cable connector to one of the free LAN ports on the switch. To enable the integrated wireless network interface on the laptop, click the wireless switch on the front of the laptop. This will slide the switch to the on (ON) position. To connect the laptop to the wireless network, click the Windows icon on the laptop's screen. In the notification area, click the networking icon and click the TrendNet-BGN wireless network. Ensure that the Connect automatically checkbox is selected and click Connect. To make your PC discoverable on the network, click Yes.To confirm the connection, click the networking icon in the notification area again or open the Network and Sharing Center.
Channel 1
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?
LWAPP
Used by Cisco wireless equipment to route frames back and forth between the wireless network and the wired LAN.
FHSS
Uses a narrow frequency band and hops data signals in a predictable sequence
5.75 GHz
What is the frequency of 802.11a networking?
Near a window
What is the least secure place to locate an access point with an omni-directional antenna when creating a wireless cell?
They are vulnerable to exploits due to weaker security.
What is the risk associated with smart technology used in networked devices such as smart refrigerators, environmental controls, or industrial equipment?
To identify the coverage area and preferred placement of access points. To identify existing or potential sources of interference.
What purposes does a wireless site survey fulfill? (Choose two.)
802.11b
Which IEEE standard describes wireless communication?
802.11a 802.11g
Which IEEE wireless standards specify transmission speeds up to 54 Mbps? (Select two.)
11 Mbps
Which data transmission rate is defined by the IEEE 802.11b wireless standard?
2.4 GHz 5.75 GHz
Which of the following are frequencies defined by 802.11 committees for wireless networking? (Select two.)
Network bridge
You are an administrator of a growing network. You notice the network you have created is broadcasting, but you cannot ping systems on different segments of your network. What device should you use to fix this issue?
Same SSID, different channel
You are configuring a wireless network with two wireless access points. Both access points connect to the same wired network. You want wireless users to be able to connect to either access point and have the ability to roam between the two access points. How should you configure the access points?
802.11n
You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 150 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz. Which 802.11 standard will work best in this situation?
802.11a
You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 54 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz. Which 802.11 standard will work best in this situation?
802.11a 802.11n
You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 54 Mbps. In addition, the client already has a wireless telephone system installed that operates at 2.4 GHz. Which 802.11 standards will work best in this situation? (Select two.)
A Directional B Directional C Omni-directional D Directional E Directional F Directional G Directional
You are designing a wireless network implementation for a small business. The business deals with sensitive customer information, so data emanation must be reduced as much as possible. The floor plan of the office is shown below. Match each type of access point antenna on the left with the appropriate location on the floor plan on the right. Each antenna type can be used once, more than once, or not at all.
802.11n
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
You are designing an update to your client's wireless network. The existing wireless network uses 802.11g equipment, which your client complains runs too slowly. She wants to upgrade the network to run at 150 Mbps or faster. 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 NICs in the 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?
Replace the omni-directional antenna with a directional antenna.
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?
Omni-directional
You are setting up a wireless hotspot in a local coffee shop. For best results, you want to disperse the radio signals evenly throughout the coffee shop. Which of the following antenna types would you use on the AP to provide a 360-degree dispersed wave pattern?
Configure the RADIUS server with a server certificate. Configure all wireless access points with client certificates.
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? (Select two. Each response is a part of the complete solution.)
Bluetooth 802.11b
You are troubleshooting a wireless connectivity issue in a small office. You determine that the 2.4GHz cordless phones used in the office are interfering with the wireless network transmissions. If the cordless phones are causing the interference, which of the following wireless standards could the network be using? (Select two.)
TKIP encryption Preshared key
You have a small wireless network that uses multiple access points. The network uses WPA and broadcasts the SSID. WPA2 is not supported by the wireless access points. You want to connect a laptop computer to the wireless network. Which of the following parameters will you need to configure on the laptop? (Select two.)
802.11n
You have been contacted by OsCorp to recommend a wireless Internet solution. The wireless strategy must support a frequency range of 5 GHz, and provide the highest possible transmission speeds. Which of the following wireless solutions would you recommend?
Is the size of the business expected to grow in the future? How many devices will need to be supported? What type of data will be transmitted on the network?
You have been hired to design a wireless network for a SOHO environment. You are currently in the process of gathering network requirements from management. Which of the following questions should you ask? (Select three.)
Overlapping channels.
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, with the exception of SSIDs, remain configured to the default. Which of the following might you suspect as the cause of the connectivity problems?
Configure a profile on the wireless client.
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 cannot see your network. What should you do?
Decrease the beacon interval.
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?
A mismatched SSID.
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 laptops wireless adapter works because you use a wireless connection at work. What is the likely cause of the problem?
SSID
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 come to the conclusion that you must manually configure the wireless access point (A
AES encryption 802.1x
You need to configure a wireless network. You want to use WPA2 Enterprise. Which of the following components will be part of your design? (Select two.)
Directional High-gain
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. What type of wireless antennae should you use on each side of the link? (Select two.)
On the top floor
You need to place a wireless access point in your two-story building. While trying avoid interference, which of the following is the best location for the access point?
Preshared key AES SSID
You want to connect your client computer to a wireless access point that is connected to your wired network at work. The network administrator tells you that the access point is configured to use WPA2 Personal with the strongest encryption method possible. SSID broadcast is turned off. Which of the following must you configure manually on the client? (Select three.)
On a RADIUS server
You want to implement 802.1x authentication on your wireless network. Where would you configure passwords that are used for authentication?
Rogue access point
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?
A Normal gain directional antenna aimed east B Normal gain directional antenna aimed south C Normal gain directional antenna aimed north D Normal gain directional antenna aimed west E High-gain directional antenna aimed east F High-gain directional antenna aimed west
Your consulting firm has been hired by a small business to implement a wireless network. The company leases two office suites within a business park approximately 200m apart, as shown below. The objectives of the implementation are as follows: Create a secure wireless network that doesn't emanate beyond each office space by implementing access points in locations A-D in each building. Connect the wireless networks at each office together with a secure outdoor wireless link using locations E and F. Drag the antenna type from the list on the left to the appropriate location on the right. Each antenna type can be used more than once or not at all.
Double the bandwidth assigned per channel to 40 MHz.
Your wireless network consists of multiple 802.11n access points that are configured as follows: SSID (hidden): CorpNet Security: WPA2-PSK using AES Frequency: 5.7 GHz Bandwidth per channel: 20 MHz This network is required to support an ever-increasing number of devices. To ensure there is sufficient capacity, you want to maximize the available network bandwidth. What should you do?
Implement antenna diversity.
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?
