(BCMSN) Exam 642-811 About Building Cisco Multilayered Switched Networks
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(BCMSN) Exam 642-811 About Building Cisco Multilayered Switched Networks

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Published: Monday, January 03, 2005

• Relates to: CCNP | CCDP

Certifications: CCNP, CCDP
Exam: Building Cisco Multilayered Switched Networks (BCMSN) Exam 642-811
Question Format: Multiple choice (single answer and multiple answer), simulation, drag and drop, fill in the blank
Time Limit: 75 minutes
Number of Questions: 60[en]70
Exam Cost: $125 (U.S.)
Available Languages: English, Japanese in Japan only
Exam Delivery Options: Pearson VUE; 877-404-3926
Thomson Prometric; 800-204-EXAM (-3926)
Cisco’s Building Cisco Multilayered Switched Networks (BCMSN) exam, which was revised in 2004, focuses on the knowledge and skills required for designing and building complex switched networks. This exam focuses on layer 2 switching and measures your ability to create and deploy a global intranet that can be implemented in a standalone as well as an enterprise-wide network environment. As a foundation, you must be familiar with general networking concepts and have relevant experience using Cisco routers and switches. These topics include knowing how to configure routers, switches, VLANs, Spanning Tree Protocol, Inter-Switch Link, and standard access lists. I highly recommend that you obtain Cisco Certified Network Associate (CCNA) certification, have at least 2 to 3 years’ experience in a Cisco environment, and/or take the official BCMSN course before you take this exam.

The BCMSN exam can be categorized as a mid-level exam for IT professionals who have the “knowledge and skills necessary to build scalable multilayer switched networks.” This exam measures the skills necessary to create and deploy a global intranet and implement basic troubleshooting techniques in environments that use Cisco multilayer switches for client hosts and services.

The BCMSN is a required exam for two Cisco professional-level certifications: Cisco Certified Network Professional (CCNP) and Cisco Certified Design Professional (CCDP). The experience necessary to pass this exam can also help prepare you for the CCIE (Routing and Switching) certification as well. For details about all Cisco certifications, visit the Cisco Learning & Events Web pages.

BCMSN 642-811 Exam Details

Cisco hosts the official BCMSN exam objectives online, which you can read for yourself. You must understand and master each exam objective listed on this Web page to pass the exam. In this section, I cover some topics that are part of the exam objectives that help you focus your studies.

The BCMSN exam is the second key focus area under the CCNP and CCDP umbrellas. This exam keeps its focus on layer 2 of the OSI model; primarily, layer 2 switching. This exam delves exclusively into the following core topic areas:

Technology
Implementation and operation
Planning and design
Troubleshooting


You must know how to implement Cisco products and services that enable connectivity and traffic transport on a specified network design that includes multilayer switching over a variety of Ethernet technologies. You must also know how to employ necessary services at each network layer to allow users to obtain services in a working multilayer switched network. Be sure you know how to control network traffic by applying network policies.

Topics such as spanning tree are the core competency on this exam, and BCMSN tailors several features that can be used to enhance STP. These features include PortFast, UplinkFast, and BackboneFast. RSTP and MST are also covered in some detail on this exam.

You should know how to restore proper network operations using Cisco devices and external management tools when presented with an incorrectly working multilayer switched network. In addition, you should be familiar with service providers’ level of LAN services and Ethernet over MPLS technology for enterprise site connectivity.

Traffic monitoring allows you to identify bottlenecks and underutilized resources,...

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