Introduction to Network Fundamentals
Network Fundamentals is a cornerstone of the Cisco Certified Network Associate (CCNA) certification. This foundational aspect of networking provides the bedrock upon which all advanced network concepts and technologies are built. Covering a broad spectrum of topics, from network architectures and topologies to the basic functions of routers and switches, Network Fundamentals equips aspiring network professionals with the essential knowledge required to design, implement, and manage robust, scalable, and secure networks.
Understanding Network Fundamentals is necessary for anyone looking to navigate the complexities of modern network environments. It covers the study of LAN (Local Area Network) and WAN (Wide Area Network) technologies, the intricacies of IP addressing, including IPv4 and IPv6, and the principles of wireless networking and security.
Additionally, it explores into the protocols that facilitate network communication, such as TCP/IP, and the tools used for network troubleshooting, ensuring professionals are well-prepared to tackle real-world networking challenges.
The CCNA curriculum introduces learners to the physical and logical architectures of networks, offering insights into the operation of routers and switches, the backbone of network connectivity. This includes an exploration of how devices communicate over a network, the role of network components in supporting data transmission, and the critical importance of network security measures to protect data and infrastructure.
Dive deeper into the world of networking by exploring our CCNA Topics links below. Here, you will find extensive resources and materials tailored to enhance your understanding of Network Fundamentals and equip you with the expertise to thrive in the field of network engineering.
Role and Function of Network Components
i. Routers
iii. Next-generation firewalls and IPS
iii. Access points
iv. Controllers (Cisco DNA Center and WLC)
v. Endpoints
vi. Servers
Characteristics of Network Topology Architectures
i. 2 tier
ii. 3 tier
iii. Spine-leaf
iv. WAN
v. Small office/home office (SOHO)
vi. On-premises and cloud
Physical Interface and Cabling Types
i. Single-mode fiber, multimode fiber, copper
ii. Connections (Ethernet shared media and point-to-point)
iii. Concepts of PoE
iv. Interface and cable issues (collisions, errors, mismatch duplex, and/or speed)
v. TCP to UDP
IPv4 Addressing and Subnetting.
i. Describe the need for private IPv4 addressing.
IPv6 addressing and prefix
ii. Global unicast
iii. Unique local
iv. Link local
v. Anycast
vi. Multicast
vii. Modified EUI 64
viii. IP parameters for Client OS (Windows, Mac OS, Linux)
Wireless Principles
i. Nonoverlapping Wi-Fi channels
ii. SSID 1.11.c RF
iii. Encryption
iv. Virtualization fundamentals (virtual machines)
i. MAC learning and aging
ii. Frame switching
iii. Frame flooding
iv. MAC address table
