Cisco CCNA Notes

broadcast domain

a broadcast domain is the area of a network where a broadcast will spread out to if sent by one device.  routers break up broadcast domains A switch is one big broadcast domain in itself and of course a hub always floods, so a hub is one big broadc [view]

By: sidhari92 | Related Lesson: Layer 2 - Broadcast Domains | Modified: July 21, 2016

physical layer

Physical layer- stuff you can touch(hubs, cables, repeaters) cables-x base t-Ethernet cable-( speed-base band signaling(one signal on the wire at one time)-twisted pair(4 pairs of wire twisted together) more twist means more cooper more cooper means [view]

By: nicollette | Related Lesson: Layer 1 - Physical Layer | Modified: July 20, 2016

Module 1

Day one the start of my course. [view]

By: princekanteh1 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: July 20, 2016

encrypotion

service password encryption encrypts all current passwords and future ones [view]

By: elgayar | Related Lesson: Layer 2 - Cisco IOS LAB (Part 3) Changing the Router Log | Modified: July 20, 2016

MAC add

 Protocol Data Unit at layer 2 is called a frame. FCS-Frame Check Sequence CRC-Cyclic redundancy check the receiving device matches or compares its own yield of the calculation or the number itself came up with, with the number already residing in [view]

By: sidhari92 | Related Lesson: Layer 2 - Mac Addresses | Modified: July 20, 2016

Introduction to CCNA

ok [view]

By: emery7 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: July 20, 2016

Physical Layer

Things that you can touch for examples cables, hubs and repeaters something that you can touch. Routers will work in the Network layer , Data Link Layer and Physical Layer Cable type – X (speed of the cable)-base (base band signaling) T (twiste [view]

By: petenathan86 | Related Lesson: Layer 1 - Physical Layer | Modified: July 23, 2016

Cisco IOS LAB (Part 2) OS Modes

conf t takes you to global config mode – changes applied at this mode will affect the device as a whole. To go back press CTRL Z, end or exit To assign a router a name – conf t)# hostname r1 routers use ip addresses to get you to places/s [view]

By: DennisOnkeo | Related Lesson: Layer 2 - Cisco IOS LAB (Part 2) OS Modes | Modified: July 20, 2016

Cisco IOS LAB (Part 1)

Types of memory in a router RAM- holds running config(all configs u av currently done on ur cisco device), it is volatile! NVRAM – non volatile, holds startup config files Flash memory – holds OS internetworking OS(IOS) user mode-have l [view]

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

VLAN Configuration LAB

vlans 1002 to vlan 1005 cannot be deleted To delete a vlan simply add a no in front of it .e.g no vlan 100 name Test vlans are stored in a switch in flash memory .i.e vlan.dat file(command sh flash) To delete vlan in new way no vlan 100 OR delete fla [view]

By: DennisOnkeo | Related Lesson: Layer 2 - VLAN Configuration LAB | Modified: July 20, 2016

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