certified wireless network administrator study guide

... as an enterprise wireless networking solution while HomeRF is only implemented in home environments due to lower output power restrictions by the FCC Wireless Metropolitan Area Networks Other ... spectrum uses, such as wireless links that span an entire city using power point-to-point links to create a network, fall into the category known as Wireless Metropolitan Area Networks, or WMANs ... advantages and disadvantages, and it is incumbent on the wireless LAN administrator to give each its due weight when deciding how to implement a wireless LAN This section will cover some of the factors

Ngày tải lên: 14/08/2014, 14:20

... one wireless network to another Instead of manually having to reconfigure all of the wireless client’s settings each time you change networks, you may configure profiles for each wireless network ... a wireless residential gateway, while Figure 4.17 illustrates where a wireless residential gateway is used on a wireless LAN FIGURE 4.16 A sample wireless residential gateway FIGURE 4.17 A wireless ... wireless gateway, while Figure 4.19 illustrates where it is used on a wireless LAN FIGURE 4.18 A sample enterprise wireless gateway FIGURE 4.19 An enterprise wireless gateway installed on a network

Ngày tải lên: 14/08/2014, 14:20

... Trang 11an access point or wireless bridge Below are some criteria to be considered in choosing the proper cables for your wireless network Cables introduce loss into a wireless LAN, so make sure ... important as 5 Ghz wireless LANs become more and more common Some connectors are rated only as high as 3 GHz, which is fine for use with 2.4 GHz wireless LANs, but will not work for 5 GHz wireless LANs ... the wireless LAN For example, if you are using only a 2.4 GHz wireless LAN, a splitter that is specified for use at up to 3 GHz would be best Impedance The impedance, usually 50 ohms in most wireless

Ngày tải lên: 14/08/2014, 14:20

... network performance Wireless LAN Frames vs Ethernet Frames Once a wireless client has joined a network, the client and the rest of the network will communicate by passing frames across the network, ... one type of wireless frame With 802.3 Ethernet frames, once chosen by the network administrator, the same frame type is used to send all data across the wire just as with wireless Wireless frames ... all wireless LAN products, regardless of manufacturer We will explain the difference between Ethernet and wireless LAN frames and how wireless LANs avoid collisions We’ll walk through how wireless

Ngày tải lên: 14/08/2014, 14:20

... understanding of channel use with wireless LANs is imperative for any good wireless LAN administrator As a wireless LAN consultant, you will undoubtedly Trang 8find many wireless networks that have many ... overhead on the network 17 B The near/far problem is one that is addressed by the access protocols used by wireless networks This problem is seen in both cellular and wireless LAN networks When ... want to be responsible for as a wireless LAN administrator is a network that does not allow the users to do their jobs or achieve the connections that they require An administrator's second option

Ngày tải lên: 14/08/2014, 14:20

... will ensure that the wireless network remains as safely guarded as the wired network Keep Sensitive Information Private Some items that should be known only by network administrators at the ... detect your network, then your network is not susceptible to this kind of attack It may be tempting for network administrators to always use the maximum power output settings on all wireless LAN ... point and the wireless network clients C Between the switch and the router on the wireless network segment D In place of a regular access point on the wireless LAN segment 17 Networks using the 802.1x

Ngày tải lên: 14/08/2014, 14:20

... weather causes disruption to wireless LANs However, you must be aware of, prepare and compensate for, these types of weather before the implementation of the wireless network Lifts and ladders could ... is very important if the user is to make productive use of the wireless LAN From the answers provided by the network manager or administrator, you will know to look for locations within the facility ... if any of the neighboring high-rises have wireless LANs FIGURE 11.17 Multi-tenant Office Buildings Proposed Wireless LAN for Client ABC Corp. 802.11b Wireless LAN Coverage Area Are there any

Ngày tải lên: 14/08/2014, 14:20

... popular networking certification programs leave off: wireless LANs Your study of wireless networking will help you bring together two fascinating worlds of technology, because wireless networks ... than the PLANET3 WIRELESS, INC client that is the original subscriber to this Study Guide is permitted only with the written and express consent of PLANET3 WIRELESS, INC This Study Guide shall be ... Trang 1Vendor-neutral wireless networktraining and certification Trang 2CWNP™ Certification Program The Certified Wireless Network Professional Training & Certification

Ngày tải lên: 14/08/2014, 14:20

... with an external VPN server VPN Server or Wireless Gateway L2 Connection L3 VPN Connection on the same wireless network The range of the wireless network will likely extend beyond the physical ... authentication It is important for the wireless network administrator to understand that neither Open System nor Shared Key authentication types are secure, and for this reason a wireless LAN security solution, ... a stronger, more flexible alternative is clear with wireless networks since more varied implementations abound with wireless than with wired networks Typically, user authentication is accomplished

Ngày tải lên: 14/08/2014, 14:21

... Trang 2CompTIA Network+ Certification Study Guide Trang 3This page intentionally left blankTrang 4CompTIA Network+ Certification Study Guide Exam N10-004 2E Robert J Shimonski ... CompTIA Network+ certification study guide / Robert J Shimonski [et al.] — 2nd ed p cm Includes index ISBN 978-1-59749-429-8 (pbk : alk paper) 1 Computer networks—Examinations—Study guides ... behaviors and Characteristics ������175 Wireless Network Concepts ������������������������������������������������������179 Common exploits of Wireless Networks �������������������������������������200

Ngày tải lên: 04/07/2014, 13:20

... access and travel across that network. Connectors attached to the ends of the cables are plugged into or coupled in some way with a network card or other device on your network. In doing so, a physical ... of a cable is to carry data across a network. A network card passes an electronic signal onto a cable and a connector is used to connect the cable to the network card or other device to the ... the network card or another device, it provides a connection between the device and the physical media that carries data across your network. MEDIA ISSUES As with anything dealing with networks,

Ngày tải lên: 04/07/2014, 13:20

... Troubleshooting Experienced network administrators know that cabling is one of the most common causes of network failure. For this reason, you should check cabling early in the network troubleshooting ... using it. Network Monitors and Protocol Analyzers Network monitors and protocol analyzers monitor traffic on the network and display the packets that have been transmitted across the network. ... transmitted across the network, the problem may lie with that particular packet type. Because the network moni- tor enables you to view the contents of all packets on the network, in many cases,

Ngày tải lên: 04/07/2014, 13:20

... topology of coax networks A coax network uses a bus topology, which basically means that all of the network devices are connected in a linear fashion Each device on the network completes ... Trang 5ChApTEr 2: Network Media 70 over the network cable These standards include Ethernet, Fast Ethernet, and Gigabit Ethernet Ethernet Ethernet is the standard for most of the networks today As ... are technologies used on a network As with Token Ring, when a Trang 8workstation on an Arcnet network receives a token, it has the opportunity to communicate on the network If it doesn’t have

Ngày tải lên: 04/07/2014, 13:20

... with networking, or often forgotten. Nevertheless, elements such as wireless technologies, FireWire, and transceivers are impor- tant to networking. Such media is not only covered on the Network ... 3 is the minimum grade of cable that supports networking, but it is not the best choice for networks. CAT3 is a voice-grade cable used in phone networks, and its only real benefit beyond being ... into the types of cabling you’ll find on networks and the Network exam. As we’ve discussed, there are three types of physical media that can be used on a network: coaxial cable, twisted-pair cable,

Ngày tải lên: 04/07/2014, 13:21

... manner of providing high-speed networking for your servers and providing acceptable access speeds to your users SElF TEST You are the network administrator of a 10BaseT network On the 1 weekend, ... minimal cabling Data is transmitted over the air using wireless adapters and wireless routers, so little to no cabling is required for network communication Transceivers (Media Converters) The ... external transceiver type Trang 2On networks that used 10Base2 and 10Base5 media, transceivers are used to connect to the cable and communicate with the network 10Base5 networks use a device called

Ngày tải lên: 04/07/2014, 13:21

... two different segments of the network decreases the amount of traffic on each of the local networks Although this does accomplish network segmentation, most network administrators opt to use routers ... rarely used on today’s networks In discussing these devices, we’ll tell you about their purpose, features, and functions on a network hEAd oF ThE ClASS… oSI and Network devices Network devices can ... now found incorporated in other network devices, such as hubs and switches. Trang 10Network Devices 105Network segmentation A bridge is a simple way to accomplish network segmentation Placing a

Ngày tải lên: 04/07/2014, 13:21

... Two Networking Technologies Connected via a Windows Server 2008 Router. Trang 2Concepts of ConvergenceOver the years, a number of network devices have become obsolete or less nec-essary to a network ... switch for networking devices together, a firewall, and perhaps even a wireless access point (WAP) As time goes on, you can expect to see other devices converging together, requiring networks to ... eXchange (PBX) or ISDN network router An NT2 device provides an S inter-face and accepts a T interinter-face from an NT1 NT2 usually handles data link and network layer functions in network with multiple

Ngày tải lên: 04/07/2014, 13:21

... discussed. In addition to wireless LANs (WLANs), wireless personal area networks (WPANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs) are also taking ... CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. 15 Chapter 1 - Introduction to Wireless LANs Answers to Review Questions 1. A. The most alluring feature of a wireless network ... impedance Line of sight logarithm CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. Chapter 1 - Introduction to Wireless LANs 16 11. A. The first wireless LAN standard was the 802.11...

Ngày tải lên: 14/08/2014, 14:20

... popular networking certification programs leave off: wireless LANs. Your study of wireless networking will help you bring together two fascinating worlds of technology, because wireless networks ... mathematics  Watt  Milliwatt CWNA Study Guide © Copyright 2002 Planet3 Wireless, Inc. CWNP™ Certification Program The Certified Wireless Network Professional Training & Certification ... Spectrum Technology 47 Uses of Spread Spectrum 48 Wireless Local Area Networks 48 Wireless Personal Area Networks 49 Wireless Metropolitan Area Networks 49 FCC Specifications 49 Frequency Hopping...

Ngày tải lên: 17/02/2014, 15:20

... What is a stub network? A. A network with more than one exit point B. A network with more than one exit and entry point C. A network with only one entry and no exit point D. A network that has ... chapter:  Internetworking basics  Network segmentation  How bridges, switches, and routers are used to physically segment a network  How routers are employed to create an internetwork I’m ... Internetworking By default, switches break up collision domains . This is an Ethernet term used to describe a network scenario wherein one particular device sends a packet on a network...

Ngày tải lên: 17/01/2014, 08:20