CCNA Related TCP/IP reference modal

TCP/IP reference modal The TCP/IP model is the network model used by computer networks today. It was created in the 1970s by DARPA (Defense Advance Research Project Agency) as an open, vendor-neutral,... Read more »

CCNA COURS – OSI reference model

OSI reference model   The Open Systems Interconnection (OSI) model was created by theInternational Organization for Standardization (ISO), the world’s largest developer of voluntary international standards. It is a layered model that was created to... Read more »

Computer network ccna course related

Computer network explained   A computer network is a telecommunications network that enables sharing of resources and information. Nodes in a network are connected with each other using either cable or  wireless media... Read more »

What is Token Ring

What is Token Ring Token-Ring Lan Technology was developed by IBM in the middle 1980s as a fast and reliable alternative to Ethernet. Token ring technology uses a different concept, known as... Read more »


Ethernet media standerd Ethernet, Fast Ethernet and Gigabit Ethernet, are identified by three part names , which is also know as Media standard. An example of Media Standard is 10BASE-T. The first... Read more »

CSMA/CD,CSMA/CA and Tokan passing

CSMA/CD (carrier sense multipl acces/collision Detection).  When a host want to place data on the wire, it will “sense” the wire to find whether there is a single already on the wire.... Read more »

Common Network Cable Types

Common Network Cable Types Cable are commonly used to carry communication  singnals within Local area network (LAN). There are three type of cable media that can be used to connect device to... Read more »


WHAT IS NIC( NETWORK INTERFACE  CARD) A NIC ( Network Interface Card) provides the hardware interface between a computer   and a computer and a network. These days almost all new computer... Read more »

Hub and spoke WAN topology & network infrastructure devices

Hub and spoke wide area Network topology Larger Enterprise have multiple business offices in different geographical location. Normally, Internet provides network connectivity solution to connect multiple physical site in different geographical location.... Read more »

Office Network & baseband and broadband

MAIN OFFICE AND BRANCH OFFICE NETWORKS MAIN OFFICE A main office is where all the branch offices are reporting to and where the top department heads of the enterprise works. Main offices... Read more »