Notes with worthy tutorials
Delivery: Delivery refers to the way a packet is handled by the underlying network under the control of the network layer. Various delivery concepts are explained below. Connection Types: Delivery of a packet in the network layer is accomplished by either a connection oriented service or a connection-less service. Connection Oriented Service: At first a … Read more
Connecting Devices: Devices that are used to connect other devices are called connecting devices. That is, connecting device is a device that connects. There are 4 types of connecting devices. They are as follows, i. Repeater: A repeater is a device that receives signals and before it become too weak or corrupted the repeater regenerates … Read more
Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA): This is a wireless network multiple access method defined by IEEE 802.11 standard. CSMA/CA is a modification to CSMA/CD. Collision detection as in CSMA/CD is not applicable for several reason, one reason is Hidden Terminal Problem. To understand this problem, considering that we have three stations 1, … Read more
CSMA/CD (Carrier Sense Multiple Access with Collision Detection): The IEEE 802.3 defines the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) as the standard access method for traditional Ethernet. Stations in a traditional Ethernet can be connected using a physical bus or star topology, but the logical topology is always a bus. It means that … Read more