ccna 200-301 official cert guide volume 2 - netman24.ir

ccna 200-301 official cert guide volume 2 - netman24.ir.ZigBee A technology based on the IEEE 802.15.4 standard for wireless personal local area networks that contains small, low-power digital radios.Brother I Morning CCNA Certification KnowledgeAs mankind steps into the information society, the global computer network - Internet is entering people's work, study and life, becoming a social public infrastructure like water, electricity and gas. Naturally, society has also put forward technical and skill requirements for positions in the networking industry. For those who are planning to build a network, of course, they want to be professional and experienced senior engineers for network planning and design, so that the design can meet the growing needs of users and adapt to the development of network technology; for those who are building or have built a network, of course, they want to hire knowledgeable and familiar with the product technicians to install, debug, operate and maintain the network invested in a large amount of money The network is built to maximize its effectiveness. For this reason, the well-known vendors in the field of networking - Cisco (Cisco) company launched for its products, network planning and network support engineer certification.Cisco's professional qualifications at home and abroad has always been "to the high salary through train" reputation, although in China for various reasons, has not been as hot as in previous years (one of the main reasons is because most people are through the memorization of questions to obtain certification, and does not have the real ability, this book will not only help readers This book will not only help readers pass the CCNA certification, but will also allow them to become true CCNAs), but its gold value is still valued by many employers, and earning any level of Cisco certification means joining the ranks of skilled networking professionals who are recognized and respected by the industry. With a Cisco certification, the chances of success are naturally a lot higher. However, more people do not understand Cisco certification at all, or only a little bit of it, this chapter introduces the knowledge of Cisco certification exam.Cisco certification systemCisco certification is the Internet community has a great reputation of network skills certification. Its overall certification system includes routing and switching network support (after-sales engineer certification system), routing and switching network design (pre-sales engineer certification system) O At the same time, Cisco also has network security, storage, voice and telecommunications carrier certification.(1) The certification certificate is divided into three levels. Level 1 ---------- Engineer (Associate). Level 2 ---------- Senior Engineer (Professional) .. Level 3 ---------- Network Expert (Expert)