CCST Certification Cram Notes

The exam objectives for this certification include:

1. 1. Standards and Concepts

2. 2. Addressing and Subnet Formats

3. 3. Endpoints and Media Types

4. 4. Infrastructure

5. 5. Diagnosing Problems

6. 6. Security

7. 7. Appendix

1. Standards and Concepts

1.1 TCP/IP model, OSI model, frames and packets, addressing

TCP/IP Model: The TCP/IP model is a conceptual framework that describes the functions required for network communication. It stands for Transmission Control Protocol/Internet Protocol, which are the two main protocols used in the Internet. The TCP/IP model consists of four layers:

1. Application Layer: This layer provides network services to the user applications. It includes protocols like HTTP (Hypertext Transfer Protocol), SMTP (Simple Mail Transfer Protocol), and FTP (File Transfer Protocol).

2. Transport Layer: The transport layer ensures reliable data delivery between hosts. It includes protocols like TCP (Transmission Control Protocol), which provides reliable, connection-oriented communication, and UDP (User Datagram Protocol), which provides connectionless, unreliable communication.

3. Internet Layer: The internet layer is responsible for addressing, routing, and fragmenting data packets across different networks. It uses IP (Internet Protocol) to provide logical addressing and routing functionality.

4. Link Layer: The link layer handles the physical transmission of data over the network. It includes protocols like Ethernet, Wi-Fi, and PPP (Point-to-Point Protocol). This layer is responsible for framing data into frames and transmitting them over the physical medium.