CCNA Discovery 3 Chapter 9 Study Guide 1. Why is network downtime such a problem in Enterprise network?

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Sydney Washington
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1 1. Why is network downtime such a problem in Enterprise network? 2. A good network design incorporates which elements? 3. What is the purpose of the three-layer network design model? 4. What is the purpose of an SLA? 5. Describe the purpose of a Business Continuity Plan. 6. What is the purpose of Preventive Maintenance? 7. How do we determine a Baseline measurement? What is the purpose? 8. Define the following and give their purpose: a. SNMP b. MIB c. Threshold d. NMS e. Network Monitoring Plan Complete PT What is the purpose of Redundancy? 10. What is the objective of Troubleshooting efforts? 11. Which Security details should be part of the Business Continuity Plan? Mr. Bayne Page 1 of 9 Pioneer High School

12. What areas should a technician look for when prioritizing which errors to fix first? 13. Complete the activity: 14. Describe the following troubleshooting models: a. Top-down b. Bottom-up c.

2 12. What areas should a technician look for when prioritizing which errors to fix first? 13. Complete the activity: 14. Describe the following troubleshooting models: a. Top-down b. Bottom-up c. Divide-and-Conquer d. Trial-and-Error e. Substitution 15. Describe each of the steps of the General Troubleshooting Model: a. Define the problem b. Gather facts c. Deduce possibilities and alternatives d. Design plan of action Mr. Bayne Page 2 of 9 Pioneer High School

3 e. Implement solution f. Analyze results 16. Describe what might be an issue at each layer of the OSI model: a. Layer 7 b. Layer 6 c. Layer 5 d. Layer 4 e. Layer 3 f. Layer 2 g. Layer Complete the activity: 18. What are some common simple problems with Switches? Mr. Bayne Page 3 of 9 Pioneer High School

4 19. What troubleshooting steps should you take when looking at the configuration of a switch? 20. What is the purpose of STP? 21. Explain the reasons for STP not functioning: a. Misconfigurations b. Defective transceivers c. Hardware and cabling issues d. Overloaded processors 22. How does one troubleshoot STP? Complete PT Why do we prefer Dot1Q rather than ISL for switchport trunking? 24. What steps are taken to troubleshoot VLAN configurations? 25. Complete PT Describe the purpose and use of VTP. 27. What problems can a new switch or rogue switch cause to the VTP domain? How can this be addressed? Complete PT Which tools/commands are best used to troubleshoot RIP routing problems? 29. Describe each of the following RIP problems: a. Layer 1 or Layer 2 connectivity issues b. Requirements for VLSM subnetting but using RIPv1 Mr. Bayne Page 4 of 9 Pioneer High School

5 c. RIPv1 and RIPv2 routing configurations mismatched d. Network statements missing or incorrect e. Interface IP addressing incorrect f. Outgoing interface is down g. Advertised network interface is down h. Passive interface misconfigurations Complete PT Complete Lab Which tools/commands are used to troubleshoot EIGRP routing problems: 31. Describe each of the following EIGRP problems: a. Layer 1 or Layer 2 connectivity issues exist. b. An interface has incorrect addressing or subnet mask. c. AS numbers on EIGRP routers are mismatched. d. The wrong network or incorrect wildcard mask is specified in the routing process. e. The link may be congested or down. f. The outgoing interface is down. Mr. Bayne Page 5 of 9 Pioneer High School

g. The interface for an advertised network is down. Complete PT 9.3.2.3 32. Describe each of the following OSPF routing problems: a. Neighbors must be

6 g. The interface for an advertised network is down. Complete PT Describe each of the following OSPF routing problems: a. Neighbors must be part of the same OSPF area. b. Interfaces for neighbors must have compatible IP addresses and subnet masks. c. Routers in an area should have the same OSPF hello interval and dead interval. d. The routers must advertise the correct networks for interfaces to participate in the OSPF process. e. The appropriate wildcard masks must be used to advertise the correct IP address ranges. f. Authentication must be correctly configured on routers for communication to occur. 33. What are the additional OSPF troubleshooting commands? 34. Complete the activity: Complete Lab Mr. Bayne Page 6 of 9 Pioneer High School

7 35. What is the purpose of the Default-Information Originate command? 36. What is the purpose of the Redistribute Static command? 37. Why is it better to Redistribute Static, rather than program the default routes manually? Complete Lab Complete lab When troubleshooting WAN connections, what is the purpose of the Show controllers command? 39. How can Encapsulation problems affect WAN links? 40. What is the purpose of SLARP? 41. How do we use the Show IP Interface Brief command? How does this differ from the standard Show IP Interface? 42. Explain each of the three portions of PPP connectivity troubleshooting: a. LCP phase is complete b. Authentication has passed, if configured c. NCP phase is complete Complete PT Explain the issues in each scenario: a. If both the LCP and NCPs are open b. If the LCP is not open c. If the LCP is open and the NCPs are not Mr. Bayne Page 7 of 9 Pioneer High School

8 44. Why is two-way authentication a better choice? Complete PT Complete Lab Why should you confirm the status of a link BEFORE applying an ACL to the link? 46. Explain each of the following steps to troubleshooting an ACL issue: a. Is an ACL applied to the problem router or interface? b. Has it been applied recently? c. Did the issue exist before the ACL was applied? d. Is the ACL performing as expected? e. Is the problem with all hosts connected to the interface or only specific hosts? f. Is the problem with all protocols being forwarded or only specific protocols? g. Are the networks appearing in the routing table as expected? Mr. Bayne Page 8 of 9 Pioneer High School

47. Complete the activity: Complete PT 9.5.1.4 48. What is the purpose of the Deny ip any any log command? 49.

9 47. Complete the activity: Complete PT What is the purpose of the Deny ip any any log command? 49. Where should you place an ACL: a. Standard ACL b. Extended ACL Complete PT Complete Lab Mr. Bayne Page 9 of 9 Pioneer High School

IT245 ROUTING AND SWITCHING I

IT245 ROUTING AND SWITCHING I ***For Classes Delivered Online, please see specific requirements in your online course header located at Course Objectives http://classes.miller motte.edu*** Upon successful