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06 August 2015

Cisco Certified Network Associate (CCNA)


Cisco Network Architectures 

The role of the network has changed from a data-only network to a system that enables the connections of people, devices, and information in a media-rich, converged network environment.
In order for networks to function efficiently and grow, the network must be built upon a standard architecture. The network architecture refers to the devices, connections, and products that are integrated to support the necessary technologies and applications.
A well-planned network technology architecture
  • helps to ensure that any device can be connected across any combination of network 
  • increases cost efficiency by integrating network security and management
  • and improves business processes

With the constant evolution of networks, Cisco has updated its enterprise architectures and frameworks and has created the following three enterprise architectures to address the new network trends:

  • Borderless networks architecture
  • Collaboration architecture
  • Data center and virtualization architecture
These three enterprise technology architectures can be implemented separately, or combined.

CCNA 

The three Cisco architectures  are built on an infrastructure of scalable and resilient hardware and
software. Components of the architectures come together to build network systems that span your organization from network access to the cloud, and provide organizations with the services they need.
At the foundation of all three of these architectures, and in fact, at the foundation of the Internet itself, are routers and switches.
Routers and switches transport data, voice, and video communications, allow for wireless access, and provide for security.
After a basic network infrastructure with routing and switching is built, organizations can grow their network over time, adding features and functionality in an integrated solution.

As the use of these integrated, expanding networks increases, so does the need for training for individuals who implement and manage network solutions. This training must begin with the routing and switching foundation. 
Achieving Cisco Certified Network Associate (CCNA) certification is the first step in helping an individual prepare for a career in networking.
CCNA certification validates an individual’s ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN. 
This CCNA curriculum includes lessons that address the basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This CCNA curriculum also includes the use of various protocols, such as Internet Protocol (IP), Open Shortest Path First (OSPF), Serial Line Interface Protocol (SLIP), Frame Relay, VLANs, Ethernet, access control lists (ACLs), and others.
This course helps set the stage for networking concepts and basic routing and switching configurations and is a start on your path for CCNA certification.