Wireless Networking
Which of the following is known as a Basic Service Set in infrastructure mode?
A WAP
An office has an 802.11a access point. A technician has been asked to identify devices that are compatible with this AP. Which of the following devices is MOST likely compatible?
An 802.11n smartphone
A network technician is configuring a wireless network. To avoid interference from other wireless networks in the area, the technician should change which setting?
Channel
Which of the following would Kim, a technician, do to monitor remote traffic through an access point?
Enable an SNMP agent
A company has installed an access point and configured it to broadcast at 802.11n only. Some users are stating that they cannot connect to this access point. Which of the following is the MOST likely reason some users cannot connect?
Incompatible NICs
Kim, a network administrator, is seeing workstations in building C authenticate to the building A wireless access point. Which of the following would resolve this issue?
Reduce the transmission power
What feature enables 802.11n networks to minimize dead spots?
Transit beamforming
Which of the following 802.11 standards can operate at both 2.4Ghz and 5.0Ghz?
n
Which of the following 802.11 standards transmits the signals the GREATEST distance?
n
An 802.11b wireless network has a maximum data rate of:
11 Mbps
Which of the following wireless standards provide speed of 11Mbps?
802.11b
Which wireless standard works at a MAXIMUM data rate of up to 54Mbps?
802.11g
A technician is implementing a wireless network at a small business. The business already has a certificate authority and RADIUS server that they would like the technician to integrate with the wireless network. Additionally, the business would like to utilize their legacy 802.11b TKIP printers. Which of the following configurations should the technician use?
802.11g with WPA-Enterprise
A company needs to implement a secure wireless system that would require employees to authenticate to the wireless network with their domain username and password. Which of the following would a network administrator deploy to implement these requirements? (Select TWO).
802.1x WPA Enterprise
A company wants to ensure that a wireless signal from their WAP only sends down one specific corridor. Which of the following can be done to achieve this?
Change the antennas
Jennifer, a home user, wishes to confine a wireless network to devices ONLY inside of her house. Which of the following will accomplish this?
Decreasing radio strength
Which of the following allows 802.11n higher transfer speeds than the previous wireless standards?
MIMO technology
To achieve maximum Wi-Fi coverage in a room, where should you place the WAP?
Place the WAP in the center of the room.
Which of the following is the most secure method of wireless encryption?
WPA2
A technician working for a company with a wireless network named WirelessA notices a second wireless network named WirelessB. WirelessB is MOST likely a:
rogue access point
A wireless signal from a 100mw radio that passes through a Plasterboard wall(3dB loss) and a Metal door (6dB loss) is equivalent to a _____ mw signal
12.5
A technician is installing 802.11a wireless access points in an open warehouse 300 feet (91.44 meters) long and 200 feet (60.96 meters) wide. Which of the following would be the LEAST number of devices needed to provide coverage to the entire building?
2
Which of the following is the radio frequency and data rate for 802.11g as specified by the IEEE standards?
2.4 GHz at 54 Mbps
An 802.11a wireless network is functioning at which of the following frequencies?
5.0 GHz
Which of the following is the MAXIMUM data transmission rate of 802.11a?
54Mbps
Which of the following has a maximum transfer rate of 54Mbps and operates at the 5GHz frequency?
802.11a
Which of the following technologies has more non-overlapping channels to utilize in a wireless LAN?
802.11a
Which of the following wireless standards is capable of ONLY operating on 5.8GHz?
802.11a
A network administrator wants to deploy a wireless network in a location that has too much RF interference at 2.4 GHz. Which of the following standards requires the use of 5 GHz band wireless transmissions? (Select TWO)
802.11a 802.11ac
A company is deploying a new wireless network and requires 800Mbps network throughput. Which of the following is the MINIMUM configuration that would meet this need?
802.11ac with 2 spatial streams and an 80MHz bandwidth
Which of the following wireless standards has a maximum rate of less than 50 Mbps?
802.11b
A user is trying to connect to the wireless network in the office but is unable to establish a consistent connection. The computer alternates connecting between several similarly configured access points. Which of the following would be the BEST way to address this issues?
Adjust the signal strength of the access points with minimal coverage overlap.
An 801.11g wireless access point was configured as follows: - AP encryption forced to WPA2-AES mode only - MAC address filtering enabled with the following MAC address in the allow list: 00-ab-29-da-c3-40 Which is true about the above configuration?
An 802.11n compatible client can connect to the wireless network only if its MAC address is 00- ab-29-da-c3-40 and the encryption key is known by the client.
What hardware enables wireless PCs to connect to resources on a wired network segment in infrastructure mode? (Select two.)
An access point A wireless bridge
While implementing wireless access points into the network, one building is having connectivity issues due to light fixtures being replaced in the ceiling, while all other buildings' connectivity is performing as expected. Which of the following should be exchanged on the access points installed in the building with connectivity issues?
Antenna
Some employees are unable to maintain a wireless network connection. The network's wireless infrastructure is comprised of three different buildings with the configurations listed below. Wireless network in Building A and C is used exclusively for internal employees and Building B is used for visitors and requires no additional configuration on their devices. Which of the following settings would need to be modified to provide the BEST wireless experience for all employees as they move between buildings? Building A Building BBuilding CChannel: 1Channel: 6Channel: 11Encryption: WPA2 Encryption: OpenEncryption: WPA2SSID. CorpSSID. GuestSSID. Sales
Change SSID in Building C to match Building A
A network technician needs to address bandwidth issues on the wireless network. There are currently four 802.11n access points. The technician would like to increase the bandwidth. Which of the following would be the BEST solution?
Channel bonding
An administrator would like to get more speed out of a wireless network. The administrator decides to configure the AP with a frequency width of 40MHz. Which of the following features is the administrator MOST likely using?
Channel bonding
The wireless network inside a large training room has been saturated with client requests. Most of the client requests are coming from smartphones and laptops. The network technician has been tasked with increasing the performance of the wireless access point. Which of the following would BEST accomplish this?
Channel bonding
Which of the following characteristics allows an 802.11g WAP to have transfer speeds up to 108Mbps?
Channel bonding
Which of the following will allow multiple frequencies to be combined?
Channel bonding
A customer has requested a solution using multiple WAPs for wireless access. Which of the following should be different on each WAP to prevent wireless problems?
Channels
Which of the following is a requirement for bridging with 802.11a?
Clear line of sight
Fred, a network technician, is asked to install a couple new WAP's inside a back warehouse that was added to a main warehouse facility that already has complete wireless coverage on both the 2.4GHz and 5GHz frequencies. Fred already has a complete wireless heat map of the main warehouse. Which of the following is the first step that Fred should do before choosing which WAP's to use?
Conduct a wireless survey of the back warehouse
Channel bonding will improve which of the following wireless characteristics?
Connection speed
Which of the following is the BEST way to prevent new users from connecting to a wireless access point, but still allow already connected users to continue to connect?
Create a MAC filter containing the current users
Fred, a network technician, is tasked with setting up a new wireless network in an office for office laptops and desktops only. The surrounding offices already have many wireless networks. Fred discovered that over 30 wireless networks were showing up as he completed a wireless survey of the office. Every single one of the networks that Fred was able to see while conducting the wireless survey were 802.11b/g networks. Which of the following should Fred consider before purchasing/installing the new wireless access points?
Determine which wireless channels and bands to use to mitigate as much interference as possible
A small office is looking to deploy wireless to cover one half of the work area only. The technician is restricted to suspending the WAP in the middle of the office due to network jack limitations. Which of the following antenna types would BEST meet these requirements?
Directional
Kim, a network technician, is installing an 802.11n network. Which of the following should Kim enable to ensure that the network only allows 802.11n clients?
Disable 802.11b and 802.11g
Sheryl, an administrator, has set up an 802.11n wireless network. Users with 802.11n laptops have reported that speeds are slow. After testing, Sheryl determines that users max out at 802.11g speeds. Which of the following would MOST likely fix this issue?
Enable wireless multimedia (WMM) for QoS
Some visitors are unable to access the wireless network. The network's wireless infrastructure is comprised of three different buildings with the configurations listed below. Wireless network in Building A and C is used exclusively for internal employees and Building B is used for visitors and requires no additional configuration on their devices. Which of the following settings would need to be modified to provide wireless access to all visitors? Building A Building BBuilding CChannel: 2Channel: 6Channel: 11Encryption: WPA2 Encryption: WPA2Encryption: WPA2
Encryption set to Open in Building B
A home user states during a basement remodel, one of the workers cut the network cable that goes from the modem to the WAP and nothing else has changed. According to the network troubleshooting methodology, which of the following is the NEXT step?
Establish a plan of action
A user at a hotel sees two SSIDs; both are called "HotelWireless". After the PC connects to one of the APs, the user notices their browser homepage has been changed. Which of the following BEST describes this AP?
Evil twin
Jennifer, a user, connects to her company's secured wireless network in the conference room when attending meetings. While using the conference room this morning, Jennifer notices an unsecured wireless network with the same name is available. Jennifer connects her laptop to this network instead of to the secured one. Jennifer has fallen victim to which of the following threats?
Evil twin
Users in a coffee shop may connect to the shops's hotspot named "CoffeeshopWiFi". Another patron has initialized a virtual AP with an identical SSID with the goal of stealing customer's logon credentials. Which of the following is occurring in this scenario?
Evil twin
A user is unable to communicate with any local network resources, but is connected to the wireless network and can access the Internet. The network technician notices that the laptop has an incorrect IP address, even though it shows it is connected. Which of the following is the MOST likely cause?
Incorrect SSID
The network support team is constantly getting calls from users in a specific area of an office building. The users are able to connect to the office wireless network, but they sometimes disconnect or experience very slow download speeds. Which of the following is MOST likely the problem?
Low signal strength or interference
A technician needs to restrict access to a SOHO wireless network to specific devices. Which of the following would MOST likely be used with minimal client configuration?
MAC address filtering
Which of the following wireless security measures, although widely implemented, does not provide strong security?
MAC address filtering
A company only wants preapproved laptops to be able to connect to a wireless access point. Which of the following should be configured?
MAC filtering
A company owns four kiosks that are in close proximity within a shopping center. The owner is concerned about someone accessing the internet via the kiosk's wireless network. Which of the following should be implemented to provide wireless access only to the employees working at the kiosk?
MAC filtering
George, a customer, has a wireless network and has reported that the network traffic from the wireless access points seems high compared to the limited number of wireless devices used. George believes that other non-employees are using the wireless network to access the Internet. Which of the following could be used to limit the access to the wireless network? (Select TWO).
MAC filtering WPA encryption
A company is experiencing very slow network speeds of 54Mbps. A technician has been hired to perform an assessment on the existing wireless network. The technician has recommended an 802.11n network infrastructure. Which of the following allows 802.11n to reach higher speeds?
MIMO
In contrast to earlier Wi-Fi speeds, which of the following BEST describes the antenna and channelization properties used in 802.11n?
MIMO, OFDM
__________ is a line-of-sight type of wireless media.
Microwave
OFDM, QAM and QPSK are all examples of which of the following wireless technologies?
Modulation
A SOHO office recently installed a wireless network for employees to use during lunch breaks. As such, the access point was placed in the kitchen area by the microwave. Employees have been reporting intermittent connectivity when using the wireless network. Which of the following would BEST improve connectivity?
Move the access point
MIMO technology in the 802.11n standard provides for which of the following benefits?
Multipath support
Which of the following would allow a network administrator to implement a user authentication method that uses X.509 certificates?
PKI
A malicious user connects to an open wireless network and is able to copy, reassemble and play back live VoIP data streams from wireless VoIP users. Which of the following attacks has the user performed?
Packet Sniffing
A network technician has received a help desk ticket indicating that after the new wireless access point was installed, all of the media department's devices are experiencing sporadic wireless connectivity. All other departments are connecting just fine and the settings on the new access point were copied from the baseline. Which of the following is a reason why the media department is not connecting?
Placement
An administrator needs to install a WAP in a location where there is no electrical wiring. Which of the following should the administrator use to complete a successful installation?
PoE
Which technology enables use of a WAP without directly connecting the WAP to an AC power outlet?
PoE
______________ refers to the time it takes for a signal to travel from sender to recipient (highly exaggerated with satellite transmission).
Propagation delay
Which of the following is needed when using WPA2-Enterprise wireless encryption?
RADIUS
A network technician is doing a wireless audit and finds an SSID that does not match the company's SSID. The company uses the SSID of ABC123, and the SSID the technician found is Default. Which of the following threats did the network technician find?
Rogue AP
A technician is attempting to set up a new laptop for a user. The user's old laptop connects to the corporate wireless network "CompanyWiFi" automatically. However, when the technician looks for the "CompanyWiFi" network on the new laptop, he does not find it in the list of available networks. Both laptops have 802.11g wireless network adapters and are sitting next to each other on the user's desk. Which of the following would MOST likely be the reason that the new laptop cannot see the "CompanyWiFi" network?
SSID broadcasting is disabled on the WAP
A company has just installed wireless in their office. In one corner of the office building users are not able to establish a connection. Which of the following can be changed on the AP to help resolve this issue?
Signal strength
A network administrator is setting up a WAP and wants to disable the ability of gaining access from the parking garage. Which of the following should the network administrator review?
Signal strength
A new technician has moved the wireless access point from the middle of the office to an area near a corner office. Wireless users are MOST likely to experience issues with which of the following?
Signal strength
A technician needs to ensure that new systems are protected from electronic snooping of Radio Frequency emanations. Which of the following standards should be consulted?
TEMPTEST
Fred, a network technician, is implementing a wireless network and needs to support legacy devices. He has selected to use WPA mixed mode. WPA mixed mode is normally implemented with which of the following encryption factors? (Select TWO).
TKIP AES
Tenants access multiple wireless networks in a building. Users report intermittent connectivity. Which of the following is the MOST likely cause of the problem?
The channels are overlapping with other wireless networks and should be changed.
Fred, a vendor, walks into a customer's site with a laptop. While waiting for his contact to arrive, he wants to check his email. He discovers the SSID for the site's wireless network and receives a valid guest password from the receptionist. He is, however, unable to connect. Which of the following is MOST likely the problem?
The wireless router at the customer's site is configured with MAC filtering
Which of the following 802.11g antennas broadcast an RF signal in a specific direction with a narrow path?
Unidirectional
Users are contacting the internal helpdesk, stating that they are having difficulty staying connected to the wireless network. When the technician investigates, it is discovered that the users are having a problem using the wireless network in the company break rooms. Which of the following should the technician do FIRST?
Unplug appliances (e.g. microwaves) to see if they are causing interference.
Many of the corporate users work from a coffee shop during their lunch breaks. The coffee shop only has an open wireless network. Which of the following should the administrator recommend to users to secure their wireless communications at the coffee shop?
Use a VPN after connecting to the coffee shop wireless
The network administrator just upgraded all of the WAPs to new ones with 2.4 GHz b/g/n support. The new WAPs reuse the same location and channel as the previous one and with no new external interference detected. However, performance issues are now occurring that did not exist before. Which of the following would correct the issue?
Use only 20 MHz channel bandwidth
A SOHO client has tasked Fred, a technician, with setting up a basic SOHO network to support four laptops and one desktop PC. The client would also like to have a basic wireless network to use for internal devices only that is secure. Given the list of requirements, which of the following devices would Fred need to purchase for his client? (Select TWO).
WAP Switch
A network administrator is tasked with deploying a company-wide wireless system which allows for accurate tracking of employees' wireless device locations via WAP triangulation. Which of the following is the MOST important aspect of the deployment?
WAP placement
A user's laptop is unable to keep a stable network connection. Which of the following measures would MOST likely need to be configured?
WAP radio power
A company would like to use the enterprise RADIUS server to authenticate and identify their secure wireless users. Which of the following standards should the company use to facilitate this?
WPA
A company wants to secure its WAPs from unauthorized access. Which of the following is the MOST secure wireless encryption method?
WPA2
Which of the following configurations of a wireless network would be considered MOST secure?
WPA2
George, a business owner, has discovered that several of the nearby businesses have wireless networks. George wants to implement a unique wireless network inside the business. Which of the following should be configured on the wireless access point to reduce interference from the other wireless networks?
Wireless channel
A company that was previously running on a wired network is performing office-wide upgrades. A department with older desktop PC's that do not have wireless capabilities must be migrated to the new network, ensuring that all computers are operating on a single network. Assuming CAT5e cables are available, which of the following network devices should a network technician use to connect all the devices to the wireless network?
Wireless router
A network technician must create a wireless link between two buildings in an office park utilizing the 802.11ac standard. The antenna chosen must have a small physical footprint and minimal weight as it will be mounted on the outside of the building. Which of the following antenna types is BEST suited for this solution?
Yagi
In wireless RF communications, the loss of signal strength is called__.
attenuation
In RF communications when wavelength increases, frequency ____.
decreases
A technician needs to install a new wireless encryption system. They are evaluating the feasibility of implementing WPA. WPA increases protection over WEP by implementing which of the following?
key rotation
