CWNA GUIDE TO WIRELESS LANS 3RD EDITION PDF

The text covers fundamental topics, such as planning, designing, installing, securing, and configuring wireless LANs. It also details common wireless LAN uses including maintenance, security, and business applications. Ciampa has worked in the IT industry as a computer consultant for businesses, government agencies and educational institutions. Ciampa holds a Ph. Convert currency. Add to Basket.

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If a remote wireless bridge is in repeater mode it functions as a standard AP only and does not communicate with other remote wireless bridges. ANS: F. Which IEEE standard added speeds of 5. Which of the following statements is true about the Which of the following is true of the CardBus form factor?

Wireless Zero Configuration c. Which type of remote wireless bridge connection is used to connect multiple LAN segments, or buildings together? Which of the following typically resides between the wireless network and the wired network, serving as the entry point to the wired network while providing encryption and authentication services?

What are the two components that make up the Windows 7 wireless Hosted Network function? Virtual Wifi, SoftAP d. Which of the following is connected inline to each end device and adds power to the line?

SoftAP b. If you are installing an access point on a ceiling, but find there are no electrical outlets nearby to provide power to the AP, what technology should you deploy? WCN c. POE b. SoftAP d. Which of the following is a viable option for a large enterprise or campus wireless network?

Soft access point ANS: B. Which of the following provides the management and configuration functions for a thin access point? PoE controller b. Which of the following is NOT a major part of an autonomous access point? Which is NOT a limitation of infrared wireless systems? Which of the following is true about infrared transmissions? Which of the following are advantages of having standards govern how a technology works? Choose all that apply. Which of the following are improvements of the Which of the following are modes in which a remote wireless bridge can function?

Which of the following are differences between a remote wireless bridge and an AP? ANS: PoE injector. List the three sources of standards. What are the two functions of an access point? ANS: First, the access point acts as the base station for the wireless network. Any device with a wireless NIC transmits its signal to an AP, which can then redirect the signal, if necessary, to other wireless devices. The second function of an AP is to act as a bridge between the wireless and wired networks.

PTS: 1. A remote wireless bridges support two types of connections. Describe them. ANS: Remote wireless bridges support two types of connections, point-to-point and point-to-multipoint. In a point-to-point PtP configuration, two buildings are connected. In a point-to-multipoint PtMP configuration, multiple buildings are connected. List and describe three advantages of standards for wireless technology. ANS: Interoperability.

Standards ensure that devices from one vendor will function with those from other vendors. Devices that are not based on standards often cannot interoperate with similar devices from other vendors. Standards serve to create competition.

If a vendor creates a new device without regard to current standards, then it automatically owns the specifications for the device; the vendor might even take out a patent on the device.

This makes it virtually impossible for another vendor to produce the same device; thus, competition among multiple vendors selling the same device is impossible. From the point of view of the consumer, standards are desirable because they encourage competition.

Any vendor can create a device based on a recognized standard. In order to compete, vendors will add additional features to their products, thus increasing the overall value for users. Lower costs. Competition results in lower costs for both users and manufacturers. When several vendors make similar products based on the same standards, they compete against each other on the price, which in turn makes the product less expensive for users.

Competition also results in lower costs for manufacturers. Because standards have been established, manufacturers do not need to invest large amounts of capital in research and development. This reduces start-up costs as well as the amount of time required to bring a product to market.

Also, manufacturing to standards encourages manufacturers to deploy mass-production techniques and economies of scale to keep production costs low, with savings that in turn are passed on to users. It is not uncommon for a proprietary vendor to phase out a product line, leaving a business that purchased the equipment with two choices: continue to use the now-obsolete system with escalating costs for supplies and technical support, or discard the legacy system and buy a new system.

Both choices are costly. Standards, however, can help create a migration path for equipment upgrades. Newer standards are generally backward compatible or at least provide a means of migrating to equipment based on the newer standards at a minimal cost. Describe the difference between directed transmission and diffused transmission with respect to infrared transmissions.

ANS: A directed transmission requires that the emitter and detector be directly aimed at one another in a line of sight LoS path. A diffused transmission relies on reflected light.

List the four modes in which a wireless bridge can function. What is a gateway and what types of gateways do you find in wireless networks? ANS: A gateway is a network device that acts as an entrance to another network. List and describe the two terms used for measuring wireless network speeds. ANS: Data rate. The data rate is the theoretical maximum rated speed of a network. For example, the data rate for IEEE However, the data rate is only theoretical.

Due to a variety of factors, a network rarely achieves its stated data rate. Throughput is the measure of how much actual data can be sent per unit of time across a network. Throughput is often used to measure the amount of data actually sent across a network in a real world setting. If two Describe the Microsoft Windows 7 feature referred to as the wireless Hosted Network. The wireless Hosted Network allows users to extend the functionality of their portable laptop computer.

For example, a user could set up her computer to create a wireless network so that other users can quickly share documents wirelessly between multiple computers. For example, a user could connect her computer to the Internet and then turn her computer into an AP that shares the Internet connection with other wireless laptop devices, much like a hardware AP.

Describe a PoE injector. These injectors can be endspan devices such as a network switch enabled to provide power on each port or a midspan device, which is connected inline to each end device and adds power to the line. See More. WLANs are based on de jure standards. A directed transmission requires a line of sight path from emitter to detector.

De facto standards are official standards. The IEEE PoE injector repeater mode root bridge wireless mesh network wireless switch 1. Published on Apr 14, Go explore.

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CWNA Guide to Wireless LANs

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