...Dear Junior Admin My first question would be what have you done to this point about the issue? What OS are the computers running that have not picked up the new DHCP scope? Start by checking the DHCP setting and configurations are they all correctly configured? Try renewing the IP addresses on the workstations that have not picked up the scope it maybe do to the IP lease agreement. The Lease period defined for your DHCP, I think 8 days for wire and 24 for wireless. So machines will not request a new IP address until this lease expires. If a Machine reboots (or any similar events like disabling then enabling the NIC), it will ask for a new IP address from the DHCP, so I think the few machines that received new IP addresses from the new scope were rebooted. You should also check the system event log and DHCP server audit log files for details on any problems. Make sure the address scope has enough addresses if not widen the scope range. Check to see if it is a router/firewall problem and makes sure you have the service enable. If the OS is Windows XP, there is a known issue in which Winsock corruption has caused this exact issue. If it is a Winsock corruption on an XP machine you One thing that you can try is Start Run type in 'cmd' (without the quotes) in the command prompt type: netsh winsock reset library With prompts, it should look like C:\Windows > netsh netsh> winsock netsh winsock> reset library I think you need to restart also. Thank you, IT...
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...Evening Unit 2. Assignment 1. DHCP Troubleshooting Dear Junior Administrator, I would start by rechecking your initial configurations to make sure the setting were saved. Once that is done, check to see if the workstations have picked up a new lease or not. If that doesn’t resolve the issue, did you check to make sure the server is up and operational? Have any Error messages or pop up’s appear with any type of warning, if so what did it say? Once the server has been checked, if it is working properly we will check these three common problems; 1. “The client might be configured to use an IP address not provided by the server. 2. The server sends a negative response back to the client, and the client displays an error message or popup indicating that a DHCP server could not be found. 3. The server leases the client an address but the client appears to have other network configuration–based problems, such as the inability to register or resolve DNS or NetBIOS names, or to perceive computers beyond its same subnet.”(Troubleshooting DHCP) On the chance that the DHCP server is off I would like you to follow these steps to try to restart the DHCP server. 1. “Start Windows Server, and log on under an account with Administrator rights. 2. At the command prompt, type net start dhcpserver , and then press ENTER. As a helpful tool Use Event Viewer in Administrative Tools to find the possible source of problems with DHCP services.”(Troubleshooting DHCP) I...
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...IP Troubleshooting Small Group Exercise Activity Overview: This is a small group activity consisting of an IP troubleshooting exercise consisting of five scenario based questions. The exercise begins with a review of a recommend IP troubleshooting procedure and continues with five scenario based questions. Simplified IP Troubleshooting Procedures: Host: * Verify layer-1 and layer-2 * Physical connectivity to the host to connected. Ethernet connection should indicate electrical connectivity with some type of LED indicator light. * Verify OS detecting network interface correctly by verifying drivers installed correctly and OS display the interface as “connected” * If you have access to switching infrastructure ensure that host is assigned to the proper VLAN with the correct interface switching type (access or trunk) * Verify layer-3 * Verify IP address assignment configuration with “ipconfig /all” command on MS Windows OSs * IP address and mask correctly assigned? * Default gateway; is the host on the same IP subnet as the default gateway? * Attempt to ping default gateway, * If successful host has layer-3 connectivity to directly connection network * If unsuccessful attempt to ping other host on directly connected IP subnet * If host is having issues with pinging hosts on directly connected network, verify ARP resolution by using the command ”arp –a” command. This command...
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...ITT TECHNICAL INSTITUTE NT1310 Physical Networking GRADED ASSIGNMENTS ------------------------------------------------- Student Professional Experience Project NSA SPE Project 1 (to be completed by the end of NT1310): Install, Configure, Test, Maintain and/or Document the Worksite Local Area Network and Its Components Purpose The purpose of the Student Professional Experience (SPE) project is to provide you an opportunity for work experience in your field or in a related field to add to your résumé. You may have an opportunity to serve your community or work for a local employer for a project that will take between 20 and 30 hours. Project Logistics Career Services will identify an employer with needs in the following areas: Network related tasks (mostly confined to the LAN and Microsoft Windows Server 2008 environments) Students are expected to practice various skills discussed in all the technical courses in Quarters 1 through 3 of the NSA program at an employer’s site on network related tasks (more confined to the LAN and Microsoft Windows Networking with Server 2008 environments) that would involve installation, configuration, testing, maintenance and documentation of the worksite network and its components, and to properly document the technical information in all involved activities. Such documentation will be used as the source material for Items 2 and 3 defined in the Deliverables section of this document. Possible example projects could...
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...T. J. Johnson NT 1330 Prof F. Pinkerton 12-19-2014 Unit 2 Assignment 1 DHCP troubleshooting Hello Mr. Junior Admin You have previously stated that you where tasking with changing the DHCP scope to match your IP addressing scheme. The IP address range you stated is of 192.168.0.200 through 192.68.0.225. You also said that you left Friday afternoon the day of the change and returned Monday morning to see that only some workstations had picked up the new leases from the new DHCP scope. I have come up with a couple solutions and approaches to just make sure everything you have done is right. First of all make sure you have implemented everything correctly in your DHCP scope range sometimes it’s a simple number mistake that can throw everything out the window also do the same for your subnet inputs any slight number will destroy everything that you are trying to achieve. Make sure the scope is under the established DHCP local role IP address range on your assigned server. My next approach would be to see if there’s connectivity between your user machines to the network. Make sure your NIC’s are all up to date and working. Most of these approaches I understand are very simple but it does not hurt to check up on. Another approach is rather long and very tedious but depending on how many users you have I would relay a memo to most of them with instructions to release their IP addresses and renew them through the console command input. I understand that most users may not...
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...Unit 2: DHCP Troubleshooting Dear Junior Admin, Based on the what you have told me regarding the DHCP scope the overall corporate IP address, it sounds like you have a lease time settings which is probably set to renew ip addresses at the default times. Here is your options on what you can do with DHCP: Table 4.5 Default DHCP Options Code Option name Meaning 1 Subnet mask Specifies the subnet mask of the client subnet. This option is defined in the DHCP Manager Create Scope or Scope Properties dialog box. It cannot be set directly in the DHCP Options dialog box. 3 Router Specifies a list of IP addresses for routers on the client's subnet. Multihomed computers can have only one list per computer, not one per network adapter. 6 DNS servers Specifies a list of IP addresses for DNS name servers available to the client. 15 Domain name Specifies the DNS domain name that the client should use for DNS computer name resolution. 44 WINS/NBNS servers Specifies a list of IP addresses for NetBIOS name servers (NBNS). 46 WINS/NBT node type Allows configurable NetBIOS over TCP/IP (NetBT) clients to be configured as described in RFC 1001/1002, where 1 = b-node, 2 = p-node, 4 = m-node, and 8 = h-node. On multihomed computers, the node type is assigned to the entire computer, not to individual network adapters. 47 NetBIOS scope ID 1 Specifies a text string that is the NetBIOS over TCP/IP scope ID for the client, as specified in RFC 1001/1002. 51 Lease time ...
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...Unit 2 Assignment 1 DHCP troubleshooting Hello Junior Administrator, Let me clarify your parameters and intent… You have stated that you were tasked with changing the DHCP scope to match you IP addressing scheme. The IP address range you are using is 192.168.0.200 through 192.168.0.225. I have come up with a couple solutions and approaches to help you with your problem. First of all make sure you have typed all your numbers correctly. At times, a simple number incorrectly typed can throw the entire scheme off. Perform the same check for your subnet inputs as any slight number mistype will negate everything that you are trying to achieve. Make sure the scope is under the established DHCP local role IP address range on your assigned server. My next approach would be to see if there is connectivity between your user machines and the network. Make sure your network interface cards are all up to date and functioning. The other approach I will suggest can be involved if you’re not used to working with your command prompt however it’s doable with a detailed memo to your employees. I would have them release their IP addresses and renew them to through the console command input. I understand that most users may not have the required know how to do these tasks but for those I would actually go and input the commands manually and hopefully this will finally fix your problems. If you still encounter issues, please feel free to contact me and we can walk through...
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...ITT Technical Institute IS3340 Windows Security Onsite Course SYLLABUS Credit hours: 4.5 Contact/Instructional hours: 60 (30 Theory Hours, 30 Lab Hours) Prerequisite(s) and/or Corequisite(s): Prerequisite: NT2580 Introduction to Information Security or equivalent Course Description: This course examines security implementations for a variety of Windows platforms and applications. Areas of study include analysis of the security architecture of Windows systems. Students will identify and examine security risks and apply tools and methods to address security issues in the Windows environment. Windows Security Syllabus Where Does This Course Belong? This course is required for the Bachelor of Science in Information Systems Security program. This program covers the following core areas: Foundational Courses Technical Courses BSISS Project The following diagram demonstrates how this course fits in the program: IS4799 NT2799 IS4670 ISC Capstone Project Capstone ProjectCybercrime Forensics NSA NT2580 NT2670 Introduction to Information Security IS4680 IS4560 NT2580 NT2670 Email and Web Services Hacking and Introduction to Security Auditing for Compliance Countermeasures Information Security Email and Web Services NT1230 NT1330 Client-Server Client-Server Networking I Networking II IS3230 IS3350 NT1230 NT1330 Issues Client-Server Client-Server SecurityContext in Legal Access Security Networking I Networking II NT1110...
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...Unit 4 Assignment 1: Create a VPN Connectivity Troubleshooting Checklist 1. Find out who is affected The first step in troubleshooting any VPN problem is to determine who is affected by it. That information can go a long way toward helping you figure out where to start looking for the problem. For example, if everyone in the company is having problems, you might look for a hardware failure on your VPN server, an incorrect firewall rule, or perhaps a configuration problem on your VPN server. On the other hand, if there is only one person who is having a problem who can never seem to remember his/her password or Some other person who insists on connecting from their home computer, that too can tell you a lot about what may be going on 2. Check to see whether users can established VPN connectivity When you begin the actual troubleshooting process, you might want to start by determining whether the affected users can establish VPN connectivity. Not all VPN problems involve connection failures. Sometimes users can connect, but they can't access the network’s resources. 3. Look for policies preventing connectivity If you find that certain users are having trouble establishing connectivity, have them try to log in from a known good machine. If that doesn't work, there may be a policy in place preventing them from logging in. For example, if you are operating in a Windows Server environment, one should check the Active Directory Users and Computers console to verify...
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...and Final Examination Answer Keys Added examination keys Immediately 03/18/2013 Answer Keys for Midterm and Final Updated some answers to address the accuracy March 2013 04/19/2013 Assignment labels on Pages 43, 52, 61, 78, 87, 97, 106 and 132. Added labels to identify additional assignments in affected units Clarification of additional assignments March 2013 Table of Contents COURSE OVERVIEW 5 Catalog Description 5 Goals and Expectations 5 Learning Objectives and Outcomes 6 Career Impact 6 INSTRUCTIONAL RESOURCES 7 Required Resources 7 Additional Resources 7 COURSE MANAGEMENT 9 Technical Requirements 9 Test Administration and Processing 9 Replacement of Learning Assignments 10 Communication and Student Support 10 Academic Integrity 10 GRADING 11 COURSE DELIVERY 13 Instructional Approach 13 Methodology 13 Facilitation Strategies 14 UNIT PLANS 15 Unit 1: The TCP/IP Model, LANs, WANs, and IP Networks 15 Unit 2: TCP/IP Network, Transport, and Application Layers 24 Unit 3: IP Subnetting and Basic Router Configuration 34 Unit 4: IP Routing with Connected, Static, and RIP-2 Routes 44 Unit 5: IP Troubleshooting and EIGRP 53 Unit 6: Subnet Design 62 Unit 7: Advanced IP Routing Topics and OSPF 69 Unit 8: Advanced IP Topics 79 Unit 9: LANs 88 Unit 10: WANs 98 Unit 11: Course Review and Final Examination 107 COURSE SUPPORT...
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...Systems, Inc. Published by: Cisco Press 800 East 96th Street Indianapolis, IN 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United States of America First Printing July 2007 Library of Congress Cataloging-in-Publication Data Empson, Scott. Portable command reference / Scott Empson. -- 2nd ed. p. cm. ISBN 978-1-58720-193-6 (pbk.) 1. Computer networks--Examinations--Study guides. 2. Internetworking (Telecommunication)--Examinations--Study guides. 3. Electronic data processing personnel--Certification. I. Title. TK5105.5.E4352 2007 004.6--dc22 2007023863 ISBN-13: 978-1-5872-0193-6 ISBN-10: 1-58720-193-3 Warning and Disclaimer This book is designed to provide information about the Certified Cisco Networking Associate (CCNA) exam and the commands needed at this level of network administration. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied. The information is provided on an “as is” basis. The author, Cisco Press, and Cisco Systems, Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of...
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...Published by: Cisco Press 800 East 96th Street Indianapolis, IN 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United States of America First Printing July 2007 Library of Congress Cataloging-in-Publication Data Empson, Scott. Portable command reference / Scott Empson. -- 2nd ed. p. cm. ISBN 978-1-58720-193-6 (pbk.) 1. Computer networks--Examinations--Study guides. 2. Internetworking (Telecommunication)--Examinations--Study guides. 3. Electronic data processing personnel--Certification. I. Title. TK5105.5.E4352 2007 004.6--dc22 2007023863 ISBN-13: 978-1-5872-0193-6 ISBN-10: 1-58720-193-3 Warning and Disclaimer This book is designed to provide information about the Certified Cisco Networking Associate (CCNA) exam and the commands needed at this level of network administration. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied. The information is provided on an “as is” basis. The author, Cisco Press, and Cisco Systems, Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from ...
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...this section, answer the following questions: What is the OSI model and why is it important in understanding networking? How does the third OSI model layer relate to administering routers? Which OSI model layer is concerned with MAC addresses? What protocols correspond to the Presentation and Session layers? What is the difference between the TCP and UDP protocols? What is the EIA/TIA 232 protocol concerned with? This section covers the following exam objectives: 103. Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network 105. Describe the purpose and basic operation of the protocols in the OSI and TCP models 110. Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach OSI Model Facts The OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. You should be familiar with the OSI model because it is the most widely used method for understanding and talking about network communications. However, remember that it is only a theoretical model that defines standards for programmers and network...
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...Sheets Exam 642-901 BGP IP Multicast IPv6 Introduction Brent Stewart Denise Donohue ciscopress.com [2] ABOUT THE AUTHORS CCNP BSCI Quick Reference Sheets About the Authors Brent Stewart, CCNP, CCDP, MCSE, Certified Cisco Systems Instructor, is a network administrator for CommScope. He participated in the development of BSCI, and has seperately developed training material for ICND, BSCI, BCMSN, BCRAN, and CIT. Brent lives in Hickory, NC, with his wife, Karen and children, Benjamin, Kaitlyn, Madelyn, and William. Denise Donohue, CCIE No. 9566, is a Design Engineer with AT&T. She is responsible for designing and implementing data and VoIP networks for SBC and AT&T customers. Prior to that, she was a Cisco instructor and course director for Global Knowledge. Her CCIE is in Routing and Switching. © 2007 Cisco Systems Inc. All rights reserved. This publication is protected by copyright. Please see page 73 for more details. [3] ICONS USED IN THIS BOOK CCNP BSCI Quick Reference Sheets Icons Used in This Book Si Router 7507 Router Multilayer Switch with Text Multilayer Switch Communication Server Switch I DC Internal Firewall IDS Web Browser Database App Server © 2007 Cisco Systems Inc. All rights reserved. This publication is protected by copyright. Please see page 73 for more details. [4] CHAPTER 1 CCNP BSCI Quick Reference Sheets The Evolving Network Model The Hierarchical Design Model Cisco used...
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...Windows Server® 2008 FOR DUMmIES ‰ by Ed Tittel and Justin Korelc Windows Server® 2008 For Dummies® Published by Wiley Publishing, Inc. 111 River Street Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at http:// www.wiley.com/go/permissions. Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries, and may not be used without written permission...
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