Cisco CCNA Notes

trunking dtp

3550 switches dynamic desirable 3560 switches dynamic auto, wont trunk automatically [view]

By: plainjane | Related Lesson: Layer 2 - Links on a Switch | Modified: June 21, 2016

IOS Lab Part#2

Router(Config)# Global Configuration Mode , any changes made will effect as a whole. to stop mis: spell command looking at domain Server>>>> Ctrl+Shift+6, break lookup sequence no ip domain-lookup (no more domain server search if miss spe [view]

By: tzin007 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 2) OS Modes | Modified: June 21, 2016

router memory types

RAM- running config/current config saved(after power cycle, it’s gone) NVRAM: keep/hold Start-up configuration   Flash: holds OPS System– Internetworking Operation System (IOS) by Cisco Router> ; user mode— limited capability R [view]

By: tzin007 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 1) | Modified: June 21, 2016

osi

physical layer   [view]

By: brayant1991 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: June 21, 2016

Broadcast Domain

all SW represent > one broadcast domain Router break broadcast domain Collusion domain is an area of network where collusion can occur/two devices transmit at the same time with half-duplex Ethernet Each port on Router/Switch is own collusion doma [view]

By: tzin007 | Related Lesson: Layer 2 - Broadcast Domains | Modified: June 20, 2016

CCNA module 1 notes

OSI – Open Systems Interconnect model Physical layer Datalink Layer Network Layer Transport Layer Session Layer Presentation Layer Application Layer [view]

By: walljs89 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: June 20, 2016

physical Layer

Physical layer Things you can touch, cables, repeater, hubs.  cabling fiber optic or ethernet  xbaset x=speed of cable in mbs base=baseband signaling, only 1 signal on the wire at one time. t=twisted pair Similar device types=crossover cable unlike [view]

By: No-Name | Related Lesson: Layer 1 - Physical Layer | Modified: June 20, 2016

Data Link Layer or Layer 2 - Mac Addresses

Layer 2 PDU : frame (your envelope) Prodocal Data Unit is called a Frame (1st)Destination Mac | (2nd)Source MAC | Data | FCS (Frame Check Sequence) Cyclink? Redundancy Check FCS (frame check sequence) houses the CRC cyclink redundancy check What devi [view]

By: rterhune | Related Lesson: Layer 2 - Mac Addresses | Modified: June 20, 2016

CCNA: OSI Model, Data Link Layer (Layer 2) MAC Addresses

Where do we use MAC Addresses? PDU is simply the way the data is structured at layer 2. PDU at layer 2 = frame Fields in a Frame:Destination MAC | Source MAC | Data | Frame Check Sequence FCS/CRCCRC performs a calculation on the whole frame and comes [view]

By: Shana Edmond | Related Lesson: Layer 2 - Mac Addresses | Modified: June 20, 2016

Data Link Layer: Always refer to as Layer 2

Data Link Layer controls communication between one device and the next immediate connected device. Showing a thunderbolt drawn between two devices indicates it’s a serial connection.  The serial connections on a router are the wide area links [view]

By: rterhune | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: June 20, 2016

« First ‹ Previous 1 2387 2477 2485 2486 2487 2488 2489 2497 2500 Next › Last »

Our Revolution

We believe Cyber Security training should accessible for everyone, everywhere. Everyone deserves the OPPORTUNITY to learn, begin and grow a career in this fascinating field. Therefore, Cybrary is the world's largest community where people, companies and training come together to give everyone the ability to collaborate in an open source way that is revolutionizing the cyber security educational experience.

We recommend always using caution when following any link

Are you sure you want to continue?

Continue
Cancel