TestKing's Building Cisco Remote Access Networks Version 9.0

642-821 (BCRAN®) TestKing`s Building Cisco® Remote Access Networks Version 9.0 642 - 821 Important Note Please Read Carefully Study Tips This product will provide you questions and answers along with detailed explanations carefully compiled and written by our experts. Try to understand the concepts behind the questions instead of cramming the questions. Go through the entire document at least twice so that you make sure that you are not missing anything. Further Material For this exam TestKing also provides: * Online Testing. Practice the questions in an exam environment. Try a demo: http://www.testking.com/index.cfm?pageid=724 * Study Guide. Concepts and labs. Provides a foundation of knowledge. (Released shortly) Latest Version We are constantly reviewing our products. New material is added and old material is revised. Free updates are available for 90 days after the purchase. You should check your member zone at TestKing an update 3-4 days before the scheduled exam date. Here is the procedure to get the latest version: 1. Go to www.testking.com 2. Click on Member zone/Log in 3. The latest versions of all purchased products are downloadable from here. Just click the links. For most updates, it is enough just to print the new questions at the end of the new version, not the whole document. Feedback Feedback on specific questions should be send to feedback@testking.com. You should state: Exam number and version, question number, and login ID. Our experts will answer your mail promptly. Copyright Each pdf file contains a unique serial number associated with your particular name and contact information for security purposes. So if we find out that a particular pdf file is being distributed by you, TestKing reserves the right to take legal action against you according to the International Copyright Laws. Leading the way in IT testing and certification tools, www.testking.com - 2 - 642 - 821 Note: Section A contains 124 questions. Section B contains 111 questions. The total number of questions is 235. Each section starts with QUESTION NO :1. There are no missing questions. Section A QUESTION NO: 1 A bank needs to connect a branch office to the corporate network on the other side of town. The branch office has twelve users that require constant access to the bank’s central accounting system throughout the day. Which two connection types may be most appropriate for this branch office? (Choose two) A. ISDN BRI B. Frame Relay C. Asynchronous D. Dedicated lease line Answer: B D Explanation: A remote site, or branch office, is a small-site connection to a campus over a WAN. A remote site typically has fewer users than the central site and therefore needs a smaller-size WAN connection. Remote sites connect to the central site and to some other remote site offices. Telecommuters may also require access to the remote site. A remote site can use the same or different media. Remote site traffic can vary, but is typically sporadic. The network designer must determine whether it is more cost effective to offer a permanent or dialup solution. The remote site must have a variety of equipment, but not as much as the central site requires. Typical WAN solutions a remote site uses to connect to the central site follow: * Leased line * Frame Relay * X.25 * ISDN As the keyword is here : "Constant Access". We don`t need and dialup solution (ISDN or Asynchronous). As it would be to costly to keep the line up the entire day. Leading the way in IT testing and certification tools, www.testking.com - 3 - 642 - 821 Reference: Cisco Press - Building Cisco Remote Access Networks Student Guide v1.1 Page 2-25 QUESTION NO: 2 You need to support a mobile sales group who needs access to email from a variety of locations. What best meets the needs of the sales group? A. Digital service B. Multi-mode service C. Asynchronous service D. High-Speed Serial (HSS) interface Answer: C Explanation: As WAN technologies improve, allowing many employees to do their jobs almost anywhere, the growth in the number of telecommuter and small company sites has exploded. Like that of central and remote sites, the telecommuter site must determine its WAN solution by weighing cost and bandwidth requirements. An asynchronous dialup solution using the existing telephony network and an analog modem is often the solution for telecommuters because it is easy to set up and the telephone facilities are already installed. As usage and bandwidth requirements increase, other remote access technologies should be considered. The nonstationary characteristics of a mobile user make an asynchronous dialup connection the remote solution. Employees on the road can use their PCs with modems and the existing telephone network to connect to the company. Typical WAN connections employed at telecommuter sites are: * Asynchronous dialup * ISDN BRI * Frame Relay (if the user utilizes the link for an extended time, like half the day) * (A)DSL Typical considerations for a remote site WAN connection follow: * Cost * Authentication * Availability Reference: Cisco Press - Building Cisco Remote Access Networks Student Guide v1.1 Page 2-27 QUESTION NO: 3 Leading the way in IT testing and certification tools, www.testking.com - 4 - 642 - 821 What are the advantages of Frame Relay connection over dedicated leased lines? (Choose two) A. Better suited multiple branch locations. B. Lower cost. C. More control over the connection. D. Full guaranteed bandwidth. Answer: A, B Explanation: Frame Relay provides virtual circuit connectivity for enterprise networks that require 56 kbps up to T1/E1 speeds. It costs less than leased lines because it uses statistical multiplexing of packets to gain efficiencies within the network, at the cost of a less-stringent bandwidth and latency guarantee. Frame Relay is being widely deployed in enterprise networks to connect regional and branch offices into the enterprise backbone. Reference: http://www.cisco.com/en/US/products/hw/modules/ps2033/products_white_paper09186a0080091ca9.shtml QUESTION NO: 4 Leading the way in IT testing and certification tools, www.testking.com - 5 - ... - tailieumienphi.vn