Must-Know          Networking Concepts          for CCNA Interviews

10

The OSI model consists of seven layers, each with a specific function, facilitating standardized communication between devices in a network.

1

OSI Model

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2

TCP/IP Model

The TCP/IP model is a four-layer architecture used for internet communication, encompassing Application, Transport, Internet, & Link layers.

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3

IP Addressing

IP addressing involves assigning unique numerical labels to devices on a network, allowing for identification and communication within the network.

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4

Subnetting divides a larger IP network into smaller subnetworks, aiding in efficient address management and network organization.

Subnetting

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5

Routers

Routers are network devices that connect different IP networks, directing data between them based on destination addresses.

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6

Switches

Switches operate at Layer 2 of the OSI model, forwarding data within a local network based on MAC addresses, enhancing network efficiency.

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7

VLANs enable network segmentation, allowing logically grouped devices to communicate as if they are on the same physical network.

Virtual Local Area Networks

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8

ARP (Address Resolution Protocol)

ARP resolves IP addresses to MAC addresses in a local network, ensuring proper communication between devices.

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9

Network Protocol

Common network protocols like TCP, UDP, ICMP, HTTP, and DHCP govern various aspects of data transmission, ensuring effective communication.

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10

Wireless concepts cover Wi-Fi standards, encryption methods, and security protocols, essential for understanding and configuring wireless networks.

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Wireless Concepts

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