CCNA Routing and Switching 200-120 Exam Cram

Download CCNA Routing and Switching 200-120 Exam Cram PDF Online Free

Author :
Publisher : Pearson IT Certification
ISBN 13 : 0133392724
Total Pages : 750 pages
Book Rating : 4.22/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCNA Routing and Switching 200-120 Exam Cram by : Michael H. Valentine

Download or read book CCNA Routing and Switching 200-120 Exam Cram written by Michael H. Valentine and published by Pearson IT Certification. This book was released on 2013-12-24 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare for Cisco CCNA Routing and Switching 200-120 exam success with this Cisco Exam Cram from Pearson IT Certification, a leader in IT. Cisco CCNA Routing and Switching 200-120 Exam Cram is the perfect study guide to help you pass the Cisco CCNA 200-120 exam, providing coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools such as exam objective mapping; a self-assessment section that helps you evaluate your motivations and exam readiness; concise, easy-to-read exam topic overviews; Exam Alerts that highlight key concepts; bullet lists and summaries for easy review; Cram Savers, Cram Quizzes, and chapter-ending practice questions that help you assess your knowledge and test your understanding; Notes that indicate areas of concern or specialty training; Tips to help you build a better foundation of knowledge; and an extensive glossary of terms and acronyms. The book also contains the extremely useful Cram Sheet that represents a collection of the most difficult-to-remember facts and numbers you should memorize before taking the test. Covers the critical information you’ll need to know to score higher on your CCNA exam! · Identify the protocols that operate at specific OSI layers · Learn the details of custom subnetting with IPv4 · Understand and implement IPv6 · Connect, configure, and manage Cisco routers and switches · Set up security for routers and switches · Create VLANs and set up switch-to-switch trunk linksFilter traffic from one network to another with access control lists (ACLs) · Deploy Network Address Translation (NAT) and IOS router DHCP services · Learn to predict and verify Spanning Tree Protocol (STP) · Configure and verify OSPFv2, OSPFv3, and EIGRP · Leverage redundancy protocols including HSRP and GLBP · Implement WAN technologies including PPP, HDLC, and Frame Relay · Troubleshoot switches and routers, including routing protocols Mike Valentine has been in the IT field for 16 years, focusing on network design and implementation. He is a Cisco Certified Systems Instructor (#31461) and specializes in Cisco Unified Communications instruction as well as CCNA and CCNP courses. His accessible, humorous, and effective teaching style has demystified Cisco for hundreds of students since he began teaching in 2002. Keith Barker, CCIE No. 6783 R/S & Security, is a 27-year veteran of the networking industry. He currently works at CBT Nuggets. His past experience includes EDS, Blue Cross, Paramount Pictures, and KnowledgeNET, and he has delivered CCIE-level training for several years.

Cisco CCNA - Routing and Switching 200-120

Download Cisco CCNA - Routing and Switching 200-120 PDF Online Free

Author :
Publisher : Pearson Education
ISBN 13 : 0789751097
Total Pages : 732 pages
Book Rating : 4.96/5 ( download)

DOWNLOAD NOW!


Book Synopsis Cisco CCNA - Routing and Switching 200-120 by : Michael Valentine

Download or read book Cisco CCNA - Routing and Switching 200-120 written by Michael Valentine and published by Pearson Education. This book was released on 2014 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Cisco CCNA Routing and Switching 200-120 Exam Cram is the perfect study guide to help you pass the Cisco CCNA 200-120 exam, providing coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools such as exam objective mapping; a self-assessment section that helps you evaluate your motivations and exam readiness; concise, easy-to-read exam topic overviews; Exam Alerts that highlight key concepts; bullet lists and summaries for easy review; Cram Savers, Cram Quizzes, and chapter-ending practice questions that help you assess your knowledge and test your understanding; Notes that indicate areas of concern or specialty training; Tips to help you build a better foundation of knowledge; and an extensive glossary of terms and acronyms. The book also contains the extremely useful Cram Sheet tear-out that represents a collection of the most difficult-to-remember facts and numbers you should memorize before taking the test. Complementing all these study tools is the powerful Pearson IT Certification Practice Test software, complete with hundreds of exam-realistic practice questions. This assessment software offers you a wealth of customization option and reporting features, allowing you to test your knowledge in study mode, practice exam mode, or flash card mode."--Amazon.com viewed June 27, 2022.

CCNA Routing and Switching Review Guide

Download CCNA Routing and Switching Review Guide PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118876865
Total Pages : 528 pages
Book Rating : 4.62/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCNA Routing and Switching Review Guide by : Todd Lammle

Download or read book CCNA Routing and Switching Review Guide written by Todd Lammle and published by John Wiley & Sons. This book was released on 2013-12-18 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Todd Lammle's focused, concise review guide, updated for the latest CCNA exams CCNA is one of the most sought after certifications for IT professionals. If you're preparing for the CCNA Routing and Switching certification, this Sybex review guide offers the best quick review available. Organized by exam objective, it’s the perfect supplement to other learning tools, including the Sybex CCNA Routing and Switching Study Guide (ISBN: 9781118749616). All exam topics from exams 100-101, 200-101, and 200-120 are thoroughly covered, and additional study materials including bonus exams, electronic flashcards, and a searchable glossary of terms are also available. Organized by exam objectives, this Sybex review guide provides a thorough and intensive review of all topics required for the CCNA Routing and Switching certification exams Lead author Todd Lammle is a Cisco networking authority and the bestselling author of numerous Cisco exam-prep books Covers exams 100-101, 200-101, and 200-120, and is a perfect companion to Sybex’s CCNA Routing and Switching Study Guide Additional study materials are available, including bonus practice exams, electronic flashcard questions, and a glossary of terms in searchable PDF form Using the CCNA Routing and Switching Review Guide will boost your confidence as you approach exams 100-101, 200-101, and 200-120.

CCNA Routing and Switching 200-125 Exam Cram

Download CCNA Routing and Switching 200-125 Exam Cram PDF Online Free

Author :
Publisher : Pearson IT Certification
ISBN 13 : 0134645316
Total Pages : 576 pages
Book Rating : 4.15/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCNA Routing and Switching 200-125 Exam Cram by : Anthony Sequeira

Download or read book CCNA Routing and Switching 200-125 Exam Cram written by Anthony Sequeira and published by Pearson IT Certification. This book was released on 2017-02-15 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. CCNA Routing and Switching 200-125 Exam Cram, 5/e is the perfect study guide to help you pass the Cisco 200-125 CCNA exam, providing coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools, including topic overviews, ExamAlerts, CramSavers, CramQuizzes, chapter-ending review questions, author notes and tips, and an extensive glossary. The book also contains the extremely useful CramSheet tear-out: a collection of essential facts in an easy-to-review format. Complementing all these great study tools is the powerful Pearson Test Prep practice test software, complete with hundreds of exam-realistic practice questions. This assessment software offers you a wealth of customization options and reporting features, allowing you to test your knowledge in study mode should be. Covers the critical information you’ll need to know to score higher on your CCNA exam! Compare and contrast networking models including OSI and TCP/IP Master subnetting in IPv4 u Understand important details of IPv6 Configure Layer 2 switches, including VLANs, trunks, STP, and Port Security Deploy EtherChannel and switch stacking Configure and verify Inter-VLAN routing Configure, verify, and troubleshoot static and dynamic routing using OSPF, EIGRP, and RIPv2 Describe basic QoS concepts Learn WAN topology and connectivity options and configure PPP, MLPPP, PPPoE, and GRE tunnel connectivity Configure and verify single-homed branch connectivity using eBGP IPv4 Configure and verify key infrastructure services including DNS, DHCP, NTP, HSRP, and NAT Configure Cisco device hardening and deploy access layer security, AAA, and ACLs Learn how to manage Cisco infrastructure Troubleshoot networks using key IOS tools Understand network programmability concepts

1,001 CCNA Routing and Switching Practice Questions For Dummies (+ Free Online Practice)

Download 1,001 CCNA Routing and Switching Practice Questions For Dummies (+ Free Online Practice) PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118794141
Total Pages : 480 pages
Book Rating : 4.42/5 ( download)

DOWNLOAD NOW!


Book Synopsis 1,001 CCNA Routing and Switching Practice Questions For Dummies (+ Free Online Practice) by : Glen E. Clarke

Download or read book 1,001 CCNA Routing and Switching Practice Questions For Dummies (+ Free Online Practice) written by Glen E. Clarke and published by John Wiley & Sons. This book was released on 2014-03-05 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test your CCNA skills as you prepare for the CCNA Routing and Switching exams To achieve CCNA Routing and Switching certification, you'll need to demonstrate a solid understanding of IP data networks, LAN switching technologies, IP addressing and routing technologies, network device security, WAN technologies, and more. Now you can test the effectiveness of your study for the CCNA Routing and Switching exams. 1,001 CCNA Routing and Switching Practice Questions For Dummies covers all the core categories of the exams and helps you thoroughly prepare with 1,001 practice questions. Each chapter covers a single topic and opens with a quick summary of the type of questions you'll encounter, as well as what to watch out for during the test. Best of all, you'll receive a redeemable code to access all 1,001 practice questions online, free, for one year! Provides practice test questions for all three new Cisco CCNA Routing and Switching certification exams: ICND1 Exam 100-101, ICND2 Exam 200-101, and the CCNA Composite Exam 200-120 Gives you 1,001 opportunities to test your preparation and knowledge of the topics Includes a redeemable code to access all 1,001 practice questions online, free, for one year Covers core topics including operation of IP data networks, LAN switching technologies, IP addressing (IPv4/IPv6), IP routing technologies, IP services, network device security, troubleshooting, and WAN technologies Practice, then practice some more with 1,001 CCNA Routing and Switching Practice Questions For Dummies.

CCNA 200-301 Official Cert Guide, Volume 2

Download CCNA 200-301 Official Cert Guide, Volume 2 PDF Online Free

Author :
Publisher : Cisco Press
ISBN 13 : 0135262739
Total Pages : 1204 pages
Book Rating : 4.33/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCNA 200-301 Official Cert Guide, Volume 2 by : Wendell Odom

Download or read book CCNA 200-301 Official Cert Guide, Volume 2 written by Wendell Odom and published by Cisco Press. This book was released on 2019-12-10 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trust the best-selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. They are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam. This book, combined with CCNA 200-301 Official Cert Guide, Volume 1, covers all the exam topics on the CCNA 200-301 exam. Master Cisco CCNA 200-301 exam topics Assess your knowledge with chapter-opening quizzes Review key concepts with exam preparation tasks This is the eBook edition of CCNA 200-301 Official Cert Guide, Volume 2. This eBook does not include access to the Pearson Test Prep practice exams that comes with the print edition. CCNA 200-301 Official Cert Guide, Volume 2 presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and enable you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly. CCNA 200-301 Official Cert Guide, Volume 2 from Cisco Press enables you to succeed on the exam the first time and is the only self-study resource approved by Cisco. Best-selling author Wendell Odom shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. This complete study package includes A test-preparation routine proven to help you pass the exams Do I Know This Already? quizzes, which enable you to decide how much time you need to spend on each section Chapter-ending Key Topic tables, which help you drill on key concepts you must know thoroughly A free copy of the CCNA 200-301 Network Simulator, Volume 2 Lite software, complete with meaningful lab exercises that help you hone your hands-on skills with the command-line interface for routers and switches Links to a series of hands-on config labs developed by the author Online interactive practice exercises that help you enhance your knowledge More than 50 minutes of video mentoring from the author An online interactive Flash Cards application to help you drill on Key Terms by chapter A final preparation chapter, which guides you through tools and resources to help you craft your review and test-taking strategies Study plan suggestions and templates to help you organize and optimize your study time Well regarded for its level of detail, study plans, assessment features, hands-on labs, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that ensure your exam success. CCNA 200-301 Official Cert Guide, Volume 2, combined with CCNA 200-301 Official Cert Guide, Volume 1, walk you through all the exam topics found in the Cisco 200-301 exam. Topics covered in Volume 2 include IP access control lists Security services IP services Network architecture Network automation Companion Website: The companion website contains CCNA Network Simulator Lite software, practice exercises, 50 minutes of video training, and other study resources. See the Where Are the Companion Files on the last page of your eBook file for instructions on how to access. In addition to the wealth of content, this new edition includes a series of free hands-on exercises to help you master several real-world configuration activities. These exercises can be performed on the CCNA 200-301 Network Simulator Lite, Volume 2 software included for free on the companion website that accompanies this book.

Cisco CCNA Routing and Switching ICND 200-101

Download Cisco CCNA Routing and Switching ICND 200-101 PDF Online Free

Author :
Publisher : Pearson Education
ISBN 13 : 1587144883
Total Pages : 760 pages
Book Rating : 4.82/5 ( download)

DOWNLOAD NOW!


Book Synopsis Cisco CCNA Routing and Switching ICND 200-101 by : Wendell Odom

Download or read book Cisco CCNA Routing and Switching ICND 200-101 written by Wendell Odom and published by Pearson Education. This book was released on 2013 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Publisher regrets that the CD/DVD content for this title cannot be made available Online. Cisco Press is the official publisher for the New CCNA Routing and Switching Certification. The New Edition of this Best-Selling Official Cert Guide includes Updated Content, New Exercises, Enhanced Practice Exams, and 60 Minutes of Video Training -- PLUS the CCNA Network Simulator Lite Edition with lab exercises. Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide from Cisco Press enables you to succeed on the exam the first time. Best-selling author and expert instructor Wendell Odom shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. This complete study package includes A test-preparation routine proven to help you pass the exams Do I Know This Already? quizzes, which enable you to decide how much time you need to spend on each section Chapter-ending and part-ending exercises, which help you drill on key concepts you must know thoroughly Troubleshooting sections, which help you master the complex scenarios you will face on the exam The powerful Pearson IT Certification Practice Test software, complete with hundreds of well-reviewed, exam-realistic questions, customization options, and detailed performance reports A free copy of the CCNA ICND2 200-101 Network Simulator Lite software, complete with meaningful lab exercises that help you hone your hands-on skills with the command-line interface for routers and switches More than 60 minutes of video mentoring from the author A final preparation chapter, which guides you through tools and resources to help you craft your review and test-taking strategies Study plan suggestions and templates to help you organize and optimize your study time The official study guide helps you master all the topics on the CCNA exam, including Spanning Tree Protocol (STP) Troubleshooting LAN switching IPv4 routing VPNs OSPF and EIGRP configuration and troubleshooting Wide area networks and Frame Relay IPv6 implementation and troubleshooting Network management Well regarded for its level of detail, study plans, assessment features, challenging review questions and exercises, video instruction, and hands-on labs, this official study guide helps you master the concepts and techniques that ensure your exam success. This volume is part of the Official Cert Guide series from Cisco Press. Books in this series provide of ...

CCENT ICND1 100-101 Exam Cram

Download CCENT ICND1 100-101 Exam Cram PDF Online Free

Author :
Publisher : Pearson IT Certification
ISBN 13 : 0133448444
Total Pages : 450 pages
Book Rating : 4.43/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCENT ICND1 100-101 Exam Cram by : Michael H. Valentine

Download or read book CCENT ICND1 100-101 Exam Cram written by Michael H. Valentine and published by Pearson IT Certification. This book was released on 2013-12-13 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare for Cisco CCENT ICND1 100-101 exam success with this Cisco Exam Cram from Pearson IT Certification, a leader in IT. Cisco CCENT ICND1 100-101 Exam Cram, Second Edition is the perfect study guide to help you pass the Cisco ICND1 100-101 exam, providing coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools such as exam objective mapping; a self-assessment section that helps you evaluate your motivations and exam readiness; concise, easy-to-read exam topic overviews; Exam Alerts that highlight key concepts; bullet lists and summaries for easy review; Cram Savers, Cram Quizzes, and chapter-ending practice questions that help you assess your knowledge and test your understanding; Notes that indicate areas of concern or specialty training; Tips to help you build a better foundation of knowledge; and an extensive glossary of terms and acronyms. The book also contains the extremely useful Cram Sheet that represents a collection of the most difficult-to-remember facts and numbers you should memorize before taking the test. Covers the critical information you’ll need to know to score higher on your Cisco CCENT ICND1 100-101 exam! · Identify the protocols that operate at specific OSI layers · Learn the details of custom subnetting with IPv4 · Understand and implement IPv6 · Connect, configure, and manage Cisco routers and switches · Set up security for routers and switches · Create VLANs and set up switch-to-switch trunk links · Configure, verify, and troubleshoot OSPFv2 and OSPFv3 · Anticipate the actions a router will take · Understand and use CDP for neighbor discovery · Learn the detailed learning and forwarding process of both routers and switches · Filter traffic from one network to another with access control lists (ACLs) · Deploy Network Address Translation (NAT) and IOS router DHCP services · Troubleshoot many types of network problems Mike Valentine has been in the IT field for 16 years, focusing on network design and implementation. He is a Cisco Certified Systems Instructor (#31461) and specializes in Cisco Unified Communications instruction as well as CCNA and CCNP courses. His accessible, humorous, and effective teaching style has demystified Cisco for hundreds of students since he began teaching in 2002. Keith Barker, CCIE No. 6783 R/S & Security, is a 27-year veteran of the networking industry. He currently works at CBT Nuggets. His past experience includes EDS, Blue Cross, Paramount Pictures, and KnowledgeNET, and he has delivered CCIE-level training for several years.

CCNA Routing and Switching Study Guide

Download CCNA Routing and Switching Study Guide PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118749618
Total Pages : 1176 pages
Book Rating : 4.16/5 ( download)

DOWNLOAD NOW!


Book Synopsis CCNA Routing and Switching Study Guide by : Todd Lammle

Download or read book CCNA Routing and Switching Study Guide written by Todd Lammle and published by John Wiley & Sons. This book was released on 2013-10-07 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare for the new CCNA exams with this Todd Lammle study guide Cisco author, speaker, and trainer Todd Lammle is considered the authority on all things networking, and his books have sold almost a million copies worldwide. This all-purpose CCNA study guide methodically covers all the objectives of the ICND1 (100-101) and ICND2 (200-101) exams as well as providing additional insight for those taking CCNA Composite (200-120) exam. It thoroughly examines operation of IP data networks, LAN switching technologies, IP addressing (IPv4/IPv6), IP routing technologies, IP services, network device security, troubleshooting, and WAN technologies. Valuable study tools such as a companion test engine that includes hundreds of sample questions, a pre-assessment test, and multiple practice exams. Plus, you'll also get access to hundreds of electronic flashcards, author files, and a network simulator. CCNA candidates may choose to take either the ICND1(100-101) and ICND2 (200-101) exams or the CCNA Composite exam (200-120); this study guide covers the full objectives of all three Written by bestselling Sybex study guide author Todd Lammle, an acknowledged authority on all things Cisco Covers essential Cisco networking topics such as operating an IP data network, IP addressing, switching and routing technologies, troubleshooting, network device security, and much more Includes a comprehensive set of study tools including practice exams, electronic flashcards, comprehensive glossary of key terms, videos, and a network simulator that can be used with the book’s hands-on labs Bonus Content: Access to over 40 MicroNugget videos from CBT Nuggets CCNA Routing and Switching Study Guide prepares you for CCNA certification success.

Cisco CCNA in 60 Days

Download Cisco CCNA in 60 Days PDF Online Free

Author :
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781548378738
Total Pages : 828 pages
Book Rating : 4.39/5 ( download)

DOWNLOAD NOW!


Book Synopsis Cisco CCNA in 60 Days by : Paul Browning

Download or read book Cisco CCNA in 60 Days written by Paul Browning and published by Createspace Independent Publishing Platform. This book was released on 2017-09-20 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: AMAZON BESTSELLER Version 3 - Completely revised and updated for the new Cisco exams: 200-125 CCNA 100-105 ICND1 200-105 ICND2 This book has been used by thousands of Cisco students to study for their CCNA exams. Written by a CCNP and three CCIEs it's all you need to pass the new style exams. FREE SUPPORT The book is supported for free so just come over and register your copy to get free access to over $400 worth of videos, exams, cram guides - in60days.com/free/ccnain60days/ ABOUT THE BOOK Do any of the following problems sound familiar to you? "I just don't know where to start studying. I feel overwhelmed by the information." "I've bought all the CBT-style videos and books, and have even been on a course, but I don't feel ready to take the exam and I don't know if I ever will." "I've been studying for a long time now, but I haven't booked the exam yet because I just don't feel ready." For every ten students who start out towards the CCNA qualification, nine quit. They don't quit because of laziness but because they became overwhelmed with information and didn't even know where to start. They sat down to study from one of the 'big name' manuals and half an hour later found themselves staring blankly at the same page. Can you imagine how frustrating that feels? You see, most authors throw you in at the deep end and expect you to get on with it. They forget that you have a full-time job, a long journey back home, family commitments and any number of challenges going on in your life. The last thing you have time for is to write out a detailed study plan with plenty of review sessions. If only somebody could tell you what to study each day, every day. If only you could open your study guide and see which bit of theory to read, which lab to do and which exam to take. You could then get on with the task of studying and getting that exam nailed. This is where Cisco CCNA in 60 Days comes in. Written in response to feedback from thousands of students using my online CCNA in 60 days program, my classroom courses and my other online Cisco training websites this book is the final piece in the studying puzzle. HOW IT WORKS Every day you read your theory module, you review yesterdays lesson, do a lab and then answer some review questions. The next day you do the same until you reach the review sessions where you cement all your knowledge with more labs and review as well as some practice exams. If that wasn't enough, you have a cram guide to read daily and an online Subnetting review site to really hone your subnetting skills. At the 30 day mark you can take your CCENT exam and move into yourICND2 study sessions or just take your CCNA exam at the end of 60 days. If you fall behind no problem, just pick up where you left off. WHAT'S COVERED? Every subject Cisco want you to know for your exams is covered with labs, theory, exams, reviews and crams. From RIP to OSPF, from VLSM to CIDR, IPv4 to IPv6, STP to CDP. Every exam topic is covered in detail many times over. Just when you think you are ready you are hit with challenge labs and more exams to ensure you are more than ready for the tricky Cisco exams. There are over 60 hand-on labs in total to help you build your configuration skills and confidence. ABOUT THE AUTHORS Paul Browning used to work at Cisco TAC but left in 2002 to start his own Cisco training company. He has authored several Cisco manuals as well as created one of the biggest online Cisco training websites used by many thousands of students. Farai Tafa is a dual CCIE who consults for large blue chip companies in the USA. Daniel Gheorghe is a CCIE in Routing and Switching.