CCIE ROUTING AND SWITCHING EXAM CERTIFICATION GUIDE 5TH EDITION

The OSI Reference Model 21Examples of data-link layer technologies are the following:• Frame Relay • Asynchronous Transport Mode (ATM)• Synchronous Data Link Control (SDLC)• High-level data-link control (HDLC)• IEEE 802.3z and IEEE 802.3ab (Gigabit Ethernet)• IEEE 802.3u (Fast Ethernet)• Ethe[r]

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Routing and Switching Written Qualification Exam (350-001)Data Link Switching (DLSw) and DLSw+DLSw was developed as an advanced tool for transporting Systems Network Architecture (SNA) and other nonroutable protocols over campus or wide-area networks.[r]

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Foundation Topics 192Understanding the Different LWAPP Modes 192LWAPP Layer 2 Transport Mode 193LWAPP Layer 3 Transport Mode 194How an LWAPP AP Discovers a Controller 196How an LWAPP AP Chooses a Controller and Joins It 197How an LWAPP AP Receives Its Configuration 200Redundancy for APs an[r]

ber where you can find each one.Definition of Key TermsDefine the following key terms from this chapter, and check your answers in the Glossary:wavelength, frequency, amplitude, EIRP, Free Path Loss, absorption, reflection, multipath,phase (in-phase/out-of-phase), scattering, refraction, line[r]

Figure 4-5 Wireless roaming 58Figure 4-6 Workgroup bridge topology 59Figure 4-7 Wireless repeater topology 60Figure 4-8 Point-to-point wireless bridge topology 61Figure 4-9 Point-to-multipoint wireless bridge topology 61Figure 4-11 Wireless mesh solution 6205_1587202115_ch04.qxd 9/29/08 2:44 PM Page[r]

In this chapter, you will learn about the 802.11 family of protocols, including 802.11,802.11a, b, and g. In addition, you will gain an introduction to the 802.11n draft standard.You should do the “Do I Know This Already?” quiz first. If you score 80 percent or higher,you might want to skip t[r]

members from the professional technical community.Readers’ feedback is a natural continuation of this process. If you have any comments regarding how wecould improve the quality of this book or otherwise alter it to better suit your needs, you can contact usthrough email at feedback@ciscopress.com.[r]

Load Balancing – Load balancing allows the transmission of packets to a specific destination over two or morepaths.Metrics – All routing protocols use metrics to calculate the best path. Some protocols use simple metrics, suchas RIP, which uses hop count. Others, such as EIGRP, use more meani[r]

given switch is the root of the spanning tree? These are a few examples of the topics you can learn by reviewing the documentation.Find a MentorThere is no substitute for finding a skilled mentor and/or study partner to help you focus your study efforts. No CCIE should ever tell you th[r]

a. Trueb. False04_1587202115_ch03.qxd 9/29/08 2:42 PM Page 32Chapter 3: WLAN RF Principles 337. If a signal is being spread about by microparticles, it is experiencing which influenceon wireless transmissions?a. Scatteringb. Spreadingc. Scarringd. Splittinge. Refracting8. Multipath causes which of t[r]

The Federal Communications Commission (FCC) is an independent agency in the UnitedStates that regulates communication methods. It is held directly responsible by Congress.It is the FCC in the United States that governs the frequency ranges that can be used with-out a license, the transmit power of d[r]

understand how data is encoded in a wireless network and then modulated, you must firstunderstand chipping codes.Chipping CodesBecause of the possible noise interference with a wireless transmission, DSSS uses a se-quence of chips. When DSSS spreads information across a frequency range, it se[r]

Although the previous sections discussed network topologies that you might encounter, itwas a very general discussion. You also need to understand the original topologies, de-fined by the 802.11 committees, including the following:■ Ad hoc mode■ Infrastructure modeThe following sections give more de[r]

102 CCNA Wireless Official Exam Certification GuideHow 802.11g Interacts with 802.11bOne interesting point about 802.11g is that, although it is backward compatible with802.11b clients, you probably do not want it to be because if you must support 802.11bclients, the entire cell suffer[r]

of PCF operation. Power Save Mode and Frame TypesAnother mode of operation mostly seen on laptops is called power save mode. Lookingback at Table 7-2, you can see that a control frame is related to a power save (PS-Poll). In aClient New Beacon(Stop sending—I am now in control.)To Distribution[r]