To all bloggers, I'm back for our third meeting.. I hope you understand our lesson and I hope also you enjoy our lesson and discussion...

Virtual Private Network is a private network that is constructed within a public network infrastructure such as the global internet. Using VPN, a telecommuter can access the network of the company headquarters through the Internet bu building a secure tunnel.

                       There are 7 OSI Model: 

 

1. Application - deal with applications
2. Presentation - responsible for presenting the data. Example: code formatting, encryption, and compression.
3. Session - establishes, manages, and terminates sessions between two(2) communicating hosts.                                     

                                       3 different modes of session:

1. Simplex
2. Half Duplex 
3. Full Duplex

   4. Transport - layer breaks up the data from the sending host and then              reassembles it in the receiver.
   5. Network - sometimes referred to as the "Cisco Layer"
   6. Data Link - performs physical addressing.
   7. Physical - media through with the data, represented as electronics signals.

OSI model will be used throughout your entire networking career.
                                    Types of Transmission:
                     1. Unicast
                     2. Multicast
                     3. Broadcast


 

 
Broadcast Domain
           - a group of devices receiving broadcast frames initiating from any device within the group.
Collision
           - effects of two nodes  sending transmissions simultaneously in Ethernet.

                                             There are 3 Physical Layer:

1. Media type
2. Connector type
3. Signalling type

                 And thats our last meeting discussion...God Bless and Enjoy...

  Hello ka bloggers...Welcome to Networking.. It is our second meeting, I hope that you understand our lesson and enjoy ka bloggers...

                                               LANs and WANs

LANs operate within a limited geographic area. Its allow to multi-access to high bandwidth area. Control the network privately under local services.

WANs operate over a large geographical area. Its allow to access over serial interfaces operating al lower speeds. Its provide full time and part time connectivity.

                                  There are 4 common topologies:

1. Bus topology uses a single backbone cable that is terminated at both ends.


2. Ring topology connects one host to the next and the last host to the first.

                            

3. Star topology connects all cables to a central point of concentration.
 

4. Mesh topology implements to provide as much protection as possible from interruption of service.
 
 

Good Morning to all my bloggers, this is my first post about IT-2 Networking Management/Principles. I hope you like it and enjoy.

In the computer, Networking is very important, because it is a group of two(2) or more computers linked together.

                        These devices are broken up in two classifications:

                               1. Network devices
                               2. End-user devices

Network devices includes all the devices that connect the end user devices together to allow them to communicate.
End-user devices includes computers, printers, and scanners.


 

                                           Icons of Network:

• ATM switch
• Router
• Switch
• Comm.server
• ISDN switch
• Bridge
• Laptop
• Phones
• File server
• Building
• Home office
• Network cloud
• Modem
• Hub; and
• Phone customer 

Routers are used to connect networks together. It is also a packets of data from one network to another. By default, break up a broadcast domain.
 
In networking, there are network topologies that defines the structure of the network.Like, Physical and Logical topology.
            
             Watch out for our next meeting...Enjoy and God Bless