Cisco CCNA Notes

Data Link Layer. Layer 2

Layer 2: controls communication between one device and the next immediate device.  Thunderbolt means serial  Addressing Scheme: Need a source address and destination address(Media Access Control Address)  MAC Address: 48 bits in length, Hexadecima [view]

By: xtopherx | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: March 25, 2018

Physical Layer

Physical Layer:  Deals with any object you may touch  -Cabling  -Repeaters  -Hubs Cables: Xbase-T(Ethernet Cable) X= 10, means 10 megabits per second  X=100, means 100 megabits per second  X=1000, Means 1000 megabits per second  Base- Base ban [view]

By: xtopherx | Related Lesson: Layer 1 - Physical Layer | Modified: March 25, 2018

Data link layer-Frames

Frame contains  (in order)- Destination MAC add, Source MAC add, Actual Data and Frame Check Sequence (FCS) [This field houses CRC (cyclic redundancy check)] CRC = it is a algorithm, which comes up with a number by applying the algorithm on the ent [view]

By: kaushik24593 | Related Lesson: Layer 2 - Mac Addresses | Modified: March 25, 2018

OSI Model

OSI Layer Model:  Open Systems Interconnect Model  1.Physical  2.Data Link 3.Network Layer 4.Transport Layer 5. Session Layer  6.Presentaion Layer 7. Application layer     [view]

By: xtopherx | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: March 25, 2018

Data Link Layer

Layer 2 Controls communication on the immediate data link or connection between two devices. That is the communication is controlled between the device and the immediate next device connected to it. 01:31 – a lightning connection drawn between [view]

By: kaushik24593 | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: March 25, 2018

Presentation Layer

Cable, repeater and hubs are in Physical layer. CABLES Cables – x base T cabling (ether net cable) x = speed of the cable, base = base band signaling, T  = twisted pair example: x = 10 MBPS  base = they can be one single at a time in the wire [view]

By: kaushik24593 | Related Lesson: Layer 1 - Physical Layer | Modified: March 25, 2018

OSI modle

OS- Open Connect Interconnect Model All people seem to need data processing [view]

By: kaushik24593 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: March 25, 2018

CCNA - Layer 2: Configure VLAN Lab

Layer 2: Configure VLAN Lab Access ports are usually connected to end devices. Creating VLAN: sw1 (config)# vlan 150 sw1 (config-vlan)# name ccna sw1# sh inte fastEth x/x Ethernet = 10MB FastEthernet = 100 MB fastEthernet 0/5 0 is the slot number [view]

By: dwatts8286 | Related Lesson: Layer 2 - Configure VLAN LAB | Modified: March 25, 2018

CCNA - Layer 2: VLAN Domains

Layer 2: VLAN Domains vlan – layer 2 broadcast domain; by default a switch is 1 broadcast domain having vlan1; vlans 1002-1005 are used for old technologies 2 types of links/ports can exist on a switch access port – any port on a switch [view]

By: dwatts8286 | Related Lesson: Layer 2 - VLAN Domains | Modified: March 25, 2018

CCNA - Layer 2: CISCO IOS Lab (Part 3) Changing the Router Login

Layer 2: CISCO IOS Lab (Part 3) Changing the Router Login Changing console port login: r1 (config)# line console 0 – takes you to console port configuratio r1 (config-line)# exec -timeout 2 20 (disconnect the console connection after 2 mins an [view]

By: dwatts8286 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 3) Changing the Router Log | Modified: March 25, 2018

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