To understand the importance of time synchronization between networking devices, we need to think about monetary transactions, video surveillance, broadcasting shows, and other activities that are time dependent. Thus, Network Time Protocol (NTP) is another protocol of the TCP/IP protocol suite that enables time synchronization among networking devices. Both Cisco switches and routers are equipped with a software clock that starts when IOS boots up; however, as a network grows, it becomes difficult for the network administrator to maintain time synchronization among all networking devices in an organization's infrastructure. So, as is DHCP to clients, so NTP is to networking devices when it comes to time synchronization. Thereby, scheduled tasks, jobs, and events will get executed smoothly and in a timely manner. Usually, there are two methods...
CCENT/CCNA: ICND1 100-105 Certification Guide
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CCENT/CCNA: ICND1 100-105 Certification Guide
By:
Overview of this book
CCENT is the entry-level certification for those looking to venture into the networking world. This guide will help you stay up-to date with your networking skills. This book starts with the basics and will take you through everything essential to pass the certification exam. It extensively covers IPv4 and IPv6 addressing, IP data networks, switching and routing, network security, and much more—all in some detail. This guide will provide real-world examples with a bunch of hands-on labs to give you immense expertise in important networking tasks, with a practical approach. Each chapter consists of practice questions to help you take up a challenge from what you have procured. This book ends with mock tests with several examples to help you confidently pass the certification. This Certification Guide consists of everything you need to know in order to pass the ICND 1 100-105 Exam, thus obtaining a CCENT certification. However, practicing with real switches and routers or a switch or router simulator will help you succeed.
Table of Contents (18 chapters)
Preface
Free Chapter
Introduction to Computer Networks
Communication in Computer Networks
Introduction to Switching
Setting Up the Switch
Introduction to Routing
Setting up the Router
Networking Services and Maintenance
Network Troubleshooting
Studying and Preparing for ICND 1 (100-105) Exam
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Appendix A: Answers to Chapter Questions
Appendix B: Cisco Device Icons
Appendix C: Numbering Systems and Conversions
Appendix D: Boolean Algebra
Appendix E: Subnetting
Appendix F: Cisco Packet Tracer
Appendix G: Graphical Network Simulator-3 (GNS3)
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