quiz

an access point that conforms to the IEEE 802.11b standard behaves similarly to wwhat other networking device?

Hub

Uses a narrow frequency band and hops data signals in a predictable sequence

FHSS

Breaks data into pieces and sends the pices across multiple frequencies in a defined range

DSSS

Break data into very small data streams in order to send the info across long distances

OFDM

Which of the following is true of a wireless network SSID?

Groups wireless devices together into the same logical network

which wireless networking component is sued to connect multiple APs together?

DS

All of the 802.11 standards for wireless networking support which type of communication path sharing technology?

CSMA/CA

What is the frequency of 802.11a networking?

5.75 GHz

How many total channels are available for 802.11a wireless networks?

23

How many total channels are available for 802.11g wireless networks?

11

Your organization uses 802.11b wireless network. Recently, other tenants installed the following equipment in your building: 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 the equipment was installed, your wireless network has been experiencing significant interference. Which system is to blame?

The wireless tv system

Which of the following are frequencies defined by 802.11 committees for wireless networking?

2.4 GHz, 5.75 GHz

Which IEEE standard describes wireless communication?

802.11b

Which data transmission rate is defined by the IEEE 802.11b wireless standard?

11 Mbps

You are designing a wireless network for a client. Your client needs the network to support a data rate of at lest 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

You are designing an update to your clients 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

Which IEEE wireless standards specify transmission speeds up to 54 Mbps?

802.11a , 802.11g

You have been contacted by OsCorp to recommend a wireless internet solution. The wireless strategy must support a transmission range of 1200ft, use a frequency range of 5 GHz, and provide the highest possible transmission speeds. Which of the following wireless solutions would you recommend?

802.11n

Which technologies are used by the 802.11ac standard to increase network bandwidth?

8 MIMO radio streams, 160 MHz bonded channels

You are an administrator of a growing network. You notice the network you have created is broadcasting, but you cannot ping the systems on different segments of your network. What device should you use to fix this issue?

Network bridge

You are configuring a wireless network with 2 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 2 access points. How should you configure the access points?

Same SSID, different channel

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

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?

Configure a profile on the wireless client

You have a small wireless netowrk that uses multiple access point. The network uses WPA and broadcasts the SSID. WPA2 is not supported by the wireless access point. you want to connect a laptop computer to the wireless network. Which of the following parameters will you need to configure on the laptop?

Preshared key, TKIP encryption

What is the risk associated with smart technology used in networked devices such as smart refrigerators, environmental controls, or industrial equipment?

They are vulnerable to exploits due to weaker security.

Which protocol is well known for its use in 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

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 ther is sufficient capacity, you want to maximize the available network bandwidth. What should you do?

Double the bandwidth as assigned per channel to 40 MHz

You are designing an update to your clients 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 MICs 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?

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. I 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?

802.11n

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?

802.11n, 802.11a

You have been hired to deisng a wireless netowrk for a SOHO environment. You are currently in the process of gathering network requirements from management. Which of the following questions should you ask?

How many devices will need to be supported? Is the size of the business expected to grow in the future? What type of data will be transmitted on the network?

What purpose does a wireless site survey fulfill?

To identify existing or potential sources of interference. To identify the coverage area and preferred placement of access points.

Which of the following enterprise wireless deployment models uses access points with enough intelligence to allow the creation of guests WLANs for keeping public wireless traffic separate from private traffic?

Distributed wireless mesh infrastructure

Which of the following wireless security methods uses a common shared key configuration on the wireless access point and all wireless clients?

WEP, WPA PERSONAL, AND WPA2 PERSONAL

What is the least secure place to locate an access point with an omni-directional antenna when creating a wireless cell?

Near a window

Which of the following measures will make your wireless network invisible to the casual attacker perfoming war driving

Disable SSID broadcast

Which of the following provides security for wireless networks?

WPA

Which of the following features are supplied by WPA2 on a wireless network?

Encryption

You need to configure a wireless network. You want to use WPA2 Enterprise. Which of the following components will be part of your design?

AES encryption, 802.1x

You want to implement 802.1x authentication on your wireless network. Where would you configure passwords that are used for authentication?

On a RADIUS server

You are the wireless network admin 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 all wireless access point with client certificates. Configure the RADIUS server with a server certificates.

You need to implement a wireless network link between 2 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?

High-gain, Directional

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

You want to connect your client computer to a wireless access point that is connected to your wired network at work. The network admin 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?

SSID, AES, Preshared key

Which protocols or mechanisms is use to provide security on a wireless network?

IPsec, WPA, 802.1X