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IT Certification and Career Paths

642-577 WLANSE

Wireless LAN for System Engineers

Last Day to Register June 14, 2006
    Exam Number:     642-577
Associated Certifications: Wireless LAN Design Specialization
Duration: 60 minutes (50-60 questions)
Available Languages: English
Click Here to Register: Pearson VUE or Prometric
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Exam Tutorial: Review type of exam questions

Exam Description

The Wireless LAN for System Engineers exam is one of several requirements for System Engineers supporting a Partner Wireless LAN Specialization.

Exam Topics

The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam.

Identify important 802.11 regulatory issues, key aspects of RF transmission, main sources of RF noise, and critical noise resolutions

  • Identify the different 802.11 standards set by IEEE and other important agency standards
  • Identify regulatory issues relating to unlicensed bands
  • Describe the sources of RF noise and how to resolve the problem
  • Identify important 802.11 standards affecting Cisco WLAN products

Identify and describe the function and use of Cisco AP and Bridge antennas

  • Describe decibel calculations and the uses of various decibel units
  • Differentiate between dBi and dBd
  • Define EIRP
  • Identify cable loss factors
  • Identify the fundamentals of antenna operation and deployment
  • Describe the categories of antennas and their uses
  • Describe Multipath distortion and other RF transmission problems
  • Describe the operation of the Diversity antenna system
  • Define basic facts of EIRP
  • Explain what an isotropic antenna is and why it is used as a reference for other antennas
  • Identify site survey considerations and procedures

Describe the Cisco SWAN solution and the fundamentals of planning a WLAN deployment

  • Identify the components of a WLAN and describe their functions
  • Identify the functions of various Cisco client (WGB, PCI, mini PCI, PCMCIA, LMC)
  • Identify workgroup bridge characteristics and functionality
  • Define the intended use of a wireless LAN (WLAN)
  • Identify benefits and concerns of channel reuse
  • Define the concept of "non-overlapping" channels and the benefit of using these channels
  • Identify the relationship between data rate and cell size (coverage area)
  • Define the performance impact of 11b client in cell coverage of an 11g access point
  • Identify the solution SWAN (Structured Wireless Aware Network)
  • Describe the operation and uses of repeaters
  • Describe hot-standby mode and its benefits
  • Explain a Metropolitan Mobile Network solution
  • Define the components of a Networks in Motion solution

Identify and describe critical aspects that affect wireless bridge deployment

  • Describe deployment considerations such as distance limits and path loss
  • Describe the difference between an AP and a bridge
  • Identify considerations for selecting antennas to be used with the Wireless Bridges
  • List environmental factors affecting wireless performance and calculate path loss (trees, fresnel zone)
  • Items that need to be considered when doing an outdoor path analysis
  • List methods for increasing the transmission distance
  • Explain why a wireless bridge may be a better solution than other alternatives
  • Describe different roles of the Bridges in a Radio Network and installation considerations
  • Explain and determine the feasibility of installing a wireless bridge link
  • Explain the difference between a root and non-root Mode bridge

Identify and perform basic and advanced AP/bridge configuration using appropriate drivers, functions, and client configuration

  • Identify the benefits of using filtering options
  • Identify how to perform initial configurations to both APs and Bridges
  • Identify where and how to configure advanced features in APs and Bridges
  • Identify which client operating systems are supported by each of the Cisco client cards
  • Identify how an administrator can push out drivers/utilities and configurations to large number of clients
  • Identify what the wireless system tray Icon can be used for

Explain the importance of security in a WLAN and appropriately configure the client/AP to use security measures

  • List the benefits of server-based security
  • Set up MAC address filtering as a security tool
  • Explain how 802.11 and 802.1X can provide better security for a WLAN
  • Explain how to configure a WLAN to provide the same levels of security that a wired LAN would provide
  • Explain what WiFi Protected Access is and how it enhances WLAN security
  • Configure an access point and wireless client to use security measures
  • Configure Cisco ACS for use with Cisco Aironet products

Identify and use tools in the Cisco SWAN solution in the management of a WLAN

  • Identify and describe the tools available for managing Cisco Wireless LANs including individual AP tools and managing APs collectively with the Cisco Wireless LAN Solution Engine (WLSE)
  • Communicate the Structured Wireless Aware Network (SWAN) Architecture relative to the components and wireless LAN management and explain Radio Management
  • Explain the need for Fast Roaming, detail the steps involved in a Layer 2 roam and explain the steps involved in Fast Roaming
Recommended Training

Aironet Wireless LAN Fundamentals and Site Survey (AWFSS) is the recommended training for this exam.

Courses listed are offered by Cisco Learning Partners, the only authorized source for Cisco IT training delivered exclusively by Certified Cisco Instructors. Check the List of Learning Partners for a Cisco Learning Partner nearest you.

Additional Resources

A variety of Cisco Press Self-Study titles are available for this exam. These titles can be purchased at the Cisco Marketplace, directly from Cisco Press, or wherever you purchase technical books.


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