Ccna Basic Notes ((better)) File

Connection-oriented; ensures all data arrives correctly (used for web browsing, email).

NAT allows private IPs to access the public internet.

Before touching a router, you must memorize the model. It helps troubleshoot any networking issue. Ccna Basic Notes

interface g0/0 ip address 192.168.1.1 255.255.255.0 no shutdown description Link to LAN

Practice questions and labs are essential for reinforcing your understanding of CCNA basic notes. We recommend: It helps troubleshoot any networking issue

You need to know how to navigate the Cisco Internetwork Operating System (IOS).

| Layer | Name | Function | PDU | Key Devices | |-------|------|----------|-----|--------------| | 7 | Application | User interface (HTTP, FTP, SMTP) | Data | Gateway | | 6 | Presentation | Data format (encryption, compression) | Data | Gateway | | 5 | Session | Session setup & teardown | Data | Gateway | | 4 | Transport | Reliable/unreliable delivery (TCP/UDP) | Segment | Firewall | | 3 | Network | Routing & logical addressing (IP) | Packet | Router | | 2 | Data Link | Physical addressing (MAC), error detection | Frame | Switch/Bridge | | 1 | Physical | Bits over media (voltage, pins) | Bits | Hub/Repeater | | Layer | Name | Function | PDU

psaumur/CCNA_Course_Notes: This is the repository ... - GitHub

Connected = 0, Static = 1, EIGRP = 90, OSPF = 110, RIP = 120

– Data formatting, encryption, and compression (JPEG, GIF).

Security devices that monitor and control incoming/outgoing traffic based on defined security rules. 3. IP Addressing (IPv4 vs. IPv6)