Class notes CCNA - Cisco Certified Network Associate
OSI • L1 o electrical, mechanical, procedural, and functional specifications for activating, maintaining, and deactivating the physical link between devices. o encoding, voltage levels, timing of voltage changes, physical data rates, maximum transmission distances, physical connectors, and other attributes. • L2 o formatting, o accessing physical media, o error detection & correction FCS • L3 o path selection o logical addressing, • L4 o segmenting & reassembing o flow control & windowing o "prepare" application data for transfer over the network o sequencing of segment • L5 o establishes, manages, and terminates sessions between two communicating hosts o checkpoint o recovery o bidirectional & unidirectional data exchange • L6 o compression & decompression o data presentation o encryption & decryption • L7 o interface to network TCP/IP • L1 -> L1+L2 of OSI • L2 -> L3 of OSI • L3 -> L4 of OSI • L4 -> L5 L6 L7 OSI-TCP/IP model is based on adjacent layer and same layer interaction through headers.
Written for
- Institution
- CCNA - Cisco Certified Network Associate
- Course
- CCNA - Cisco Certified Network Associate
Document information
- Uploaded on
- May 10, 2024
- Number of pages
- 198
- Written in
- 2023/2024
- Type
- Class notes
- Professor(s)
- Mohammad mushfequr rahman
- Contains
- All classes
Subjects
- ccna study notes
- tcpip
- convergence
- applicationsprocesses
- mapping ssids and vlans
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three types of vlan in wlan
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architecture and virtualization
