what is the most important part to study for the ccna

The Cisco Certified Network Associate (CCNA) certification provides a process that gives IT professionals a useful set of skills while providing prospective employers with an like shooting fish in a barrel way to mensurate these skills.

The program was originally created to provide a solid introduction to Cisco's Internetwork Operating System and networking practices in general. Many companies now crave It professionals to have CCNA certification or exist actively working towards it to maintain employment status. The CCNA Video Mentor outlines the importance of CCNA for today's IT professional and shows you how to successfully consummate the certification process. In many circles, CCNA is considered the "gold standard" of networking certifications and Cisco hardware is used in most network deployments.

In one case y'all have received your CCNA certification, you lot can expect better job opportunities and meliorate bacon thanks to the knowledge learned during this difficult, all the same rewarding, certification procedure.

The CCNA covers a wide variety of networking topics. Although y'all need to know all of them to successfully complete the CCNA exam schedule, there are five topics that stand out as extremely important for CCNA certification and general employment in the networking field.

TCP/IP and the OSI model

The Open Systems Interconnection (OSI) model is a concept that standardizes communication within Network Systems by breaking it into abstraction layers. All Cisco hardware is based on this model and you demand to know all seven layers of the model for the CCNA exam.

The seven layers include:

• Physical Layer

• Information Link Layer

• Network Layer

• Transport Layer

• Session Layer

• Presentation Layer

• Application Layer

It'south of import to understand not merely what each layer does, just how each layer interacts with one another to successfully grasp the concepts of the OSI model.

The Transmission Control Protocol (TCP) and Cyberspace Protocol (IP) are two distinct network protocols; however, they are used commonly used together to describe the standard data transmission model relied on by the Internet and local area networks (LANs).

TCP refers to the Send Layer of the OSI model. IP corresponds to the Network Layer of the OSI model. Basically, TCP/IP refers to network communications where TCP is used to transport data across IP networks. The TCP/IP Training Video explains what you lot need to know for the exam regarding OSI and TCP/IP.

IPv6

Net Protocol version 6 (IPv6) represents the latest revision to the Internet Protocol. Although IP was mentioned in the previous topic, IPv6 is tested as a divide component of the CCNA exam.

In addition to some other improvements, the purpose of IPv6 is to provide more unique IP addresses using eight groups of four hexadecimal digits. Currently, IPv4 carries the vast majority of Cyberspace traffic; however, the Cyberspace is apace running out of unique IP addresses to handle this load.

Well-nigh modernistic business networks are configured using IPv6 which affords nigh unlimited scalability for time to come needs and Wide Area Network (WAN) configuration. Y'all can learn more about IPv6 and how information technology relates to the CCNA test in The A, B, C'south of IPv6.

Subnetting

This is a network strategy that breaks large networks into smaller components. Each subnet functions with a unique IP address and components of each subnet typically share mutual values.

The purpose of a subnet is twofold. First, breaking a large network into smaller pieces makes it easier to diagnose performance issues in a detail section. Also, subnetting allows network maintenance to be performed on a particular section without impacting other areas that make up the network as a whole.

Cisco relies heavily on subnetting to increase organization performance and permit for piece of cake diagnosis and isolation of faulty components. Y'all should become very familiar working with subnetting for the CCNA exam. You tin can learn more than in Subnetting Secrets.

Network Address Translation (NAT)

This is the process of modifying IP address information in IPv4 headers while in transit across a network. The simplest type of NAT is known as a one-to-one translation or basic NAT. This is used to interconnect two IP networks with incompatible addressing.

Basic NAT is important because it is often used for remote access by employees. As Bring Your Ain Device (BYOD) policies at major companies go more common, employees are accessing visitor resource on the go. Bones NAT allows a smartphone or tablet user to connect to network resources, even though they are on a different IP network at the time. This is done using routers which tin configure the incoming IP address to lucifer something recognizable by the network.

The CCNA examination gets into more than complex NAT usage every bit well. You lot can acquire more about NAT in some Overview of VLANs & NAT. This course too discusses Virtual Local Area Networks (VLANs); some other of import topic for successful CCNA certification.

Wireless Access

Cisco offers a full line of wireless routers and access points and most other wireless networking equipment too interfaces with Cisco hardware hands As more businesses rely on wireless in the office than ever before, wireless access technology has become an important part of the CCNA exam.

Even big warehouses are relying on interconnected wireless admission points to requite their equipment access to network resource anywhere and you lot volition be expected to know how to properly implement this engineering science for the CCNA exam and in most It positions you hold in the futurity.

ICND1 Examination Training Made Like shooting fish in a barrel explains wireless for CCNA certification too as other of import topics you demand to know.

Brand no mistake – the CCNA exam process is difficult. It is widely considered the most difficult certification process in the IT industry; chirapsia competitors Microsoft and Novell hands-down.

The advantage to studying this fabric and successfully completing your CCNA certification is the increased job opportunities that immediately become available to you equally a Cisco Certified technician.

Companies may not even consider you for a position (no matter where you went to college) if you exercise not take CCNA certification. This is peachy because information technology means even those not fortunate enough to become to higher can practice for the CCNA and state a very nice It position in companies throughout the country and around the world.

Proficient luck and happy studying!

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Source: https://blog.udemy.com/ccna-study-guide/

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