Network Protocols

1. Protocols need to be on networks because they embody the way the network functions, and gives it guidelines.
2. Certain network protocols are needed for different topologies because they all have different positives and negatives. For example a bus will need protocols for data collisions as they are a common problem with buses, while a ring does not experience the problem of data collisions.
3. The Definition of: CSMA/CD is: (Carrier Sense Multiple Access/Collision Detection) And it is the transmission method of data used in Ethernet networks.
4. Nodes will all shut down when simultaneously transferring data in order to avoid collisions
    
5. see featured image above
6. • CSMA/CA-
     Carrier sense multiple access with collision avoidance  in computer networking, is a network multiple access method in which carrier sensing is used, but nodes attempt to avoid collisions by transmitting only when the channel is sensed to be “idle”.
   • CSMA/CARP- Stands for carrier sense multiple access with collision avoidance and resolution using priorities. It is a channel access method. CSMA/CARP is similar in nature to the CSMA/CD Channel access method used in ethernet networks, but CSMA/CARP provides no detection of network collisions. Instead of detecting network collisions, CSMA/CARP attempts to avoid collisions by using a system of transmission priorities.
   • MACAW (wireless)- Multiple Access with Collision Avoidance for Wireless (MACAW) is a slotted Medium Access control (MAC) protocol widely used in ad hoc networks.
   • PCF (wireless)- Point coordination function (PCF) is a media access control technique.  It resides in a point coordinator also known as Access point, to coordinate the communication within the network.