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CCNA1 by Mind Map: CCNA1

1. IPv6

1.1. 128 bit binary address to address IPv4 address depletion.

1.2. FE80 link local

1.3. Link-local address required as a minimum for a host

1.4. 16 bytes per hextet

1.5. 128bit to replace ipv4

2. Application/presentation/session layers

2.1. Windows, drivers applications. creation of sessions. FTP, HTML, SMTP

2.2. presentation layer

2.2.1. encryption

2.2.2. common formats

2.3. Application - SMTP Presentation - TIFF, JPEG Session - SQL

2.4. Condenses to Application layer in TCP/IP Stack

2.5. IMAP,POP, FTP

2.6. GIF and JPEG

2.7. ftp

3. Transport layer

3.1. tcp/udp

3.2. TCP, UDP

3.3. IP + Port number == socket

3.4. TCP and UDP

3.5. Segment

3.6. Provides Layer 4 security protocols (SSL and TLS)

3.7. TCP/UDP

3.8. TCP, UDP

3.9. TCP -> segment, UDP -> datagram

4. Network layer

4.1. ip

4.2. layer 3

4.3. Packet

4.4. ipv4 ipv6

4.5. Layer 3 (IP Address source and final destination, packets)

4.6. best effort

4.7. IP Address

4.8. IP

4.9. ALSO INTERNET LAYER IN OSI

4.10. PDU = packet

4.11. Packet

4.12. Connectionless

5. Data link layer

5.1. Layer 2 (MAC address source and next hop destination, frames)

5.2. header is updated on medium change

5.3. layer 2

5.4. Condenses to Data - Link Layer in TCP/IP Stack - includes OSI Physical Layer

5.5. Frame

5.6. sublayers - LLC, MAC

5.7. ARP

5.8. logical address -> ip

5.9. physical address -> mac

5.10. 2 sub layers LLC and MAC (media access control)

5.11. MAC Address

5.12. MAC LLC

5.13. PDU = frame

6. Physical layer

6.1. media

6.1.1. cable

6.1.2. fiber optic

6.1.3. radio

6.2. Physical connection, cables, fiber, copper

6.3. bits

6.4. Physical hardware connection

6.5. Physical medium. Bits. 1s and 0s. Fibre, copper, wireless transmission etc.

6.6. nic ports

7. Ethernet

7.1. cross talk

7.2. cross talk

7.3. Radio Frequency Interference (RFI)

7.4. bandwidth

7.5. Electro Magnetic Interference (EMI)

7.6. RJ45 connector - twisted pair

7.7. Straight-through - T568A or T568B both ends

8. Router and Routing

8.1. router must be connected to other routers via serial.

8.2. access operating system via serial, console port, rj45 to serial or usb via converter

8.3. Packet Direction

8.4. default gateway

8.5. SVI provides a virtual interface for access to OS

9. How to use?- click 'Tab' to pop up a text window

10. Security

10.1. IOS Hardening

10.2. Password encryption, IDS, IPS

10.3. encryption

10.4. SSH rather than telnet

10.5. passwords