Tài liệu Designing for Cisco Internetwork Solutions Version 15.0 ppt

640-861 (DESGN) Designing for Cisco Internetwork Solutions Version 15.0 640 - 861 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 test TestKing also provides: * Online Testing Practice the questions in an exam environment Try a demo: http://www.testking.com/index.cfm?pageid=724 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: Go to www.testking.com Click on Member zone/Log in 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- 640 - 861 Note: Section A contains 163 questions Section B contains 241 questions The total number of questions is 404 Each section starts with QUESTION NO :1 There are no missing questions Section A QUESTION NO: The advantages of using static routes are: (Choose all that apply) A B C D Efficient use of router resources Increased security due to known routes A single path into and out of a network Route calculations made by network administrators Answer: A, B Explanation: A: Administrator manually programmed the route and update this entry whenever a network topology changed It will not consume router ‘s CPU and use fixed memory B: Static route is Private and by default it is not conveyed to other routers as part of an update process Reference: CCDA Study guide by Damon Merchant Syngress Press Incorrect Answers C: It is not an advantage D: No Route calculations performed for static route When configuring the static routes one can specify either the next hop address that the packet will take or the packet to route out an interface Both methods work properly QUESTION NO: Before any changes are made to a customer network the current network must be documented What should be included in this documentation? (Choose all that apply) A Addressing schemes B Concerns about the network C Protocol analysis Leading the way in IT testing and certification tools, www.testking.com - 3- 640 - 861 D Network topology Answer: A, B, D Explanation: Explanation: Documenting the customer’s current network is important before any changes are made Items you should be most attentive to include the following: • Network Topology • Addressing schemes • Concerns about the network Reference: Designing Cisco Networks (Ciscopress) page 55 QUESTION NO: Routing protocols are characterized by which of the following features? (Choose all that apply) A B C D Operation at only the lowest layer of the OSI model Upper-layer protocols existing in a given protocol suite Operation at the Session layer of the OSI model Responsibility for path determination and traffic switching Answer: D Explanation: D: Routing protocols make routers work together Routers keep track of the networks they are directly connected to, as well as other routers on the networks in order to forward packets to foreign networks A router maintains this info in its routing table and periodically shares information from that table to other routers on the network This info is used to determine the best route for an incoming packet to take its destination Reference: CCDA Study guide by Damon Merchant Syngress Press Incorrect Answers A: It operates on layer of OSI model B: They operate on Layer It will not use upper layer protocols C: Routing protocols operates network layer instead of session layer QUESTION NO: Which of the following are components included in the Cisco SAFE architecture? (Choose three) Leading the way in IT testing and certification tools, www.testking.com - 4- 640 - 861 A B C D E Multicast Router Enterprise Edge Dynamic VLANs Enterprise Campus SP Edge Answer: B, D, E Explanation: SAFE architecture blue print includes security in enterprise networks,mid size ,remote accress networks,IPSec,SP edge which includes wireless and IP telephony Reference: Incorrect Answers A,C: They are not in SAFE architecture QUESTION NO: An SNMP-managed network consists of which principal components? (Choose all that apply) A B C D Firewalls Agents Network-management systems Managed devices Answer: B, C, D Explanation: B: Agents are actual software pieces that are run on the managed devices C: They are core in SNMP.An NMS runs a network management application that is responsible for receiving and presenting all of the information collected from the agents to the network administrator D: Managed devices are network nodes that run an SNMP software agent and are located on a SNMP managed network.They generate and store management related info and then provide this info to a network management system via SNMP.These nodes can be routers,acess servers,switches etc Reference: CCDA Study guide by Damon Merchant Syngress Press Incorrect Answers A: Firewalls are not related to SNMP QUESTION NO: What is the third step in building a prototype network? Leading the way in IT testing and certification tools, www.testking.com - 5- 640 - 861 A Determine how much of the network structure must be built to prove that the design meets the customers goals B Gain an understanding of what your competition intends to propose C Review extracted new customer requirements D Develop a testplan E Purchase and configure equipment F Practice demonstrations Answer: B Explanation: One can get info about competition‘s design from account manager Else you must make assumptions based on competitors’ previous network designs, products they supply, and the customer’s requirements Evaluate their design and amend your design to include any good ideas Reference: CCDA Study guide by Damon Merchant Syngress Press Incorrect Answers A: This is Second step in building a prototype network C: This is First step in building a prototype network D: This is Fourth step in building a prototype network E: This is Fifth step in building a prototype network F: This is Sixth step in building a prototype network QUESTION NO: A newly hired sales representative is trying to decide upon a WAN solution that will allow her to communicate with the corporate office located over 500 miles from her home She most be able to access the company web server and send e-mail with attachments throughout her entire 8-hour workday Which of the following would be the most cost effective for her to use? A B C D E ISDN Satellite Leased Line DSL ATM Answer: D Explanation: With DSL he will able to access web server and email server This is fixed cost, and always on Reference: Incorrect Answers A: ISDN is costly solution He may not able to send large attachments B: Very costly solution Link May fail some time Leading the way in IT testing and certification tools, www.testking.com - 6- 640 - 861 C: Leased line will be short data transfer QUESTION NO: A multi-layer LAN switches data outside of the source network based on information stored in which location? A B C D RIP tables OSPF tables Bridging tables Route processors Answer: D Explanation: Using route processors switch the packets faster than fast switching, because it has an enhanced caching algorithm and switching cache Reference: Incorrect Answers A: It is used in Router B: It is used in Router C: It is used in Bridge QUESTION NO: A small state college is planning to improve the security of their campus network, in particular the dorm network Which information provided by the college is most relevant to the new design? A B C D User policy Number of users Applications permitted Speed of the network Answer: A Explanation: Policy is main concern Which users can access which servers and applications Security is main critical area Reference: Incorrect Answers B: Number of users matters in case of performance issue It is not primary issue C: One can add or delete applications It will not play major role D: Speed effects if number of users and applications It is not main info Leading the way in IT testing and certification tools, www.testking.com - 7- 640 - 861 QUESTION NO: 10 Which two Cisco router services perform network traffic analysis to assist in documenting a customer’s existing network? (Choose two) A B C D E NetFlow CDP MRTG NetMon SNMP MIB compiler Answer: A, B Explanation: A NetFlow services consist of high-performance IP switching features that capture a rich set of traffic statistics exported from routers and switches while they perform their switching functions B:CDP is a media- and protocol-independent protocol that runs on all Cisco-manufactured equipment including routers, bridges, access and communication servers, and switches Using CDP, you can view information about all the Cisco devices directly attached to the switch In addition, CDP detects native VLAN and port duplex mismatches Network management applications can retrieve the device type and SNMP-agent address of neighboring Cisco devices using CDP This allows applications to send SNMP queries to neighboring devices CDP allows network management applications to discover Cisco devices that are neighbors of already known devices, in particular, neighbors running lower-layer, transparent protocols Incorrect Answers C: Multi –Router Traffic Grapher is used to monitor the level of activity on network links.MRTG generates reports in HTML pages that contain Portable Network Graphic (PNG) images that portray a visual look at the traffic on a link D,E : These are not related to network traffic analysis QUESTION NO: 11 Which statement about developing a network design implementation plan is true? A The implementation of a design must be overseen by the designer to ensure success B Implementation steps described in detail can be performed by a less-experienced engineer C Fallback steps can be reduced if a detailed pilot completes successfully D Many implementation steps can be performed simultaneously Answer: B Explanation: Leading the way in IT testing and certification tools, www.testking.com - 8- 640 - 861 If you specify the related to functionality, scalability, adaptability, Manageability & costeffectiveness clearly and elaborately, implementation can be done be less experience engineer Incorrect Answers A: Success is measured by customer The customer measures success from a business standpoint C: This will not play any role in network design implementation D: The steps should be carried in an order QUESTION NO: 12 You need to show proof of concept for a proposed new campus network that utilizes Layer switching The production network is business critical and no network disruptions are tolerated Which approach should be used for this test? A B C D Pilot network Prototype network Live network Verification design Answer: B Explanation: IN this method build smaller representation of network design In Prototyping situation be sure to build those segments of the network that had worst MTBF record to test how your design improves it Test most critical portions of the network Reference: CCDA Study guide by Damon Merchant Syngress Press Incorrect Answers A: If network is small build pilot network It will be less expensive than pilot C: Live network should not demonstrate any new design This may disturb existing behaviour D: Verification design to be performed on Lab network QUESTION NO: 13 You are helping a customer design some enhancements to her network for scalability and availability You discover that all routers on her network are Cisco but many of her switches come from different vendors and are owned by the departments where they are located She has an outsourcing agreement for the maintenance of the network equipment This outsourced service vendor has implemented CiscoWorks with SAA to manage the network What are three Service Level Management challenges that you would need to address in your design proposal? (Choose three) Leading the way in IT testing and certification tools, www.testking.com - 9- 640 - 861 A B C D E Your customer does not own the switches on the network The switches and routers come from different vendors She cannot utilize NetFlow on the network She has no way to monitor SLA conformance She does not manage the network with her own staff Answer: A, B, E Explanation: A: Customer does not own switches, because they are not Cisco Switches B: CiscoWorks with Cisco devices But Switches came from Different vendor E: Because Switches are different vendor, she can not manage with her staff Incorrect Answers C: Netflow can not be used , because all the equipment is not from cisco QUESTION NO: 14 Which solution can be deployed at the receiving end of a converged network to help smooth voice traffic that has been affected by variable delay? A B C D Dejitter buffers Higher compression Reduces compression Link fragmentation and interleaving Answer: A Explaination: Digital voice circuits use dejitter buffers to change this random variable delay to a more tolerable fixed delay Source: CCDA Exam Certification Guide Second Edition, Page 140 QUESTION NO: 15 What is a function of a firewall? A Maintains separate routing information for each protocol supported on a router B Provides a security buffer between connected public networks and a private network C Provides user authentication between connected public networks and a private network D Reduces routing loops by preventing the flow of routing information to the source where that information was learned Answer: B Leading the way in IT testing and certification tools, www.testking.com - 10 - ... SLA conformance She does not manage the network with her own staff Answer: A, B, E Explanation: A: Customer does not own switches, because they are not Cisco Switches B: CiscoWorks with Cisco. .. 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... important before any changes are made Items you should be most attentive to include the following: • Network Topology • Addressing schemes • Concerns about the network Reference: Designing Cisco Networks