Cisco CCNA Notes

Layer 2

PDU Protocol Data Unit – at layer 2 this is a frame   net [view]

By: swallace69183 | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: July 18, 2016

physicall layer

cabling: xbase T cabling ethernet x=snelheid x10=10mb/s base=baseband singeling, er kan maar 1 signaal tegelijk aanwezig zijn. T=twisted pairs, cat3,4,5 5=meer twist meer koper dus beter signaal. router and switch straight through cable. simular devi [view]

By: misterv | Related Lesson: Layer 1 - Physical Layer | Modified: July 18, 2016

Transport ACL

Create STANDARD ACL closest to destination address as possible Create EXTENDED closest to source address as possible also to DENY traffic as close as possible to source   **Remember there is implicit deny at the end of an ACL.   if you were apply [view]

By: win | Related Lesson: Layer 4 - Access Lists LAB | Modified: July 22, 2016

Layer2- Virtual Local Area Connection

Virtual Local Area networks (VLANS)   [view]

By: tanveerakhtar43 | Related Lesson: Layer 2 - Virtual Local Area Connections | Modified: July 18, 2016

Transport layer -ACL

ACL – controls traffic passing  ”through” or ”to” router Any traffic generated by local router is not affected ACls are read top to bottom in order, the last line in ACl should be an implicit deny any or deny all  Sta [view]

By: win | Related Lesson: Layer 4 - Access Control Lists | Modified: July 18, 2016

Layer 2- Broadcast Domains

Broadcast and Collision domain Switch/hub is one broadcast in itself. router breaks broadcast domain. Collision domain is an area in the network in which frames between two devices can collide. Each port on the switch and each port on the router are [view]

By: tanveerakhtar43 | Related Lesson: Layer 2 - Broadcast Domains | Modified: July 18, 2016

Cosas Importantes

Banda base: sólo existe una señal en el medio Cable cruzado: para dispositivos iguales Cables normales: para dispositivos diferentes [view]

By: thex2rider | Related Lesson: Layer 1 - Physical Layer | Modified: July 18, 2016

Transport

Transport layer controls communications between end host(end devices) Segments are layer 4 Communication can be reliable or unreliable TCP is reliable Layer 4 uses addressing scheme called ports Ports 1-1023 are well known 1024-49151 are registered w [view]

By: win | Related Lesson: Layer 4 - Transport Layer Overview | Modified: July 18, 2016

CCNA - Physical Layer

Cable, Hubs, Repeater  CABLES XBASET/ethernet Cabling (carries a signal for 100m) X-speed of cable, BASEband signalling, Twisted-pairs. Cable Types Either straight-thru(different device types), cross-over(Similar device types). Shielded Twisted-pai [view]

By: Antai | Related Lesson: Layer 1 - Physical Layer | Modified: July 18, 2016

IOS lab

there are 3 types of memory cisco router has 1-RAM-it holds running config,it is volatile,when router reloads configuration are gone 2-NV RAM-non volatile RAM 3-FLASH memory-it holds the operating system(internetworking OS) [view]

By: samshukla6 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 1) | Modified: July 20, 2016

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