Question

Classify the following multiple access protocols: _________

csma
polling
tdma
slotted aloha
token passing
fdma

Answer 1

The multiple access protocols include CSMA, polling, TDMA, slotted Aloha, token passing, and FDMA.

Step-by-step explanation:

The multiple access protocols can be classified as follows:

1. CSMA (Carrier Sense Multiple Access): In this protocol, stations sense the medium before transmitting data. If the medium is busy, the station waits for a period before retrying.
2. Polling: A central controller polls the stations in a pre-defined order, allowing them to transmit data one at a time.
3. TDMA (Time Division Multiple Access): The medium is divided into multiple time slots, and different stations are allocated dedicated time slots for transmitting data.
4. Slotted Aloha: The stations are synchronized to time slots, and in each time slot, a station can either transmit or keep quiet.
5. Token Passing: Stations pass a special token to gain permission for transmitting data. Only the station in possession of the token can transmit.
6. FDMA (Frequency Division Multiple Access): The medium is divided into different frequency bands, and each station is allocated a specific frequency band for transmitting data.