In the following exercise, we are going to study the CoAP protocol (Constraint Application Protocol ) used in Wireless Sensor Network (WSN), to simplify implementation in Sensor Nodes which have very limited resources in term of memory, computing power and energy. The standard is generic and does not make any assumption on Layer 2, but in our case we will suppose that layer 1 and 2 are IEEE 802.15.4. At layer 3, the 6LoWPAN protocol compresses the 40 bytes of the IPv6 header into 20 bytes. Another characteristic of WSN, is the high error rate on the radio link which leads to frame losses.
Read carefully the subject before answering. The document given in here describes the I2C bus. Question1 (1point) Is this standard issued from an official standardization agency (ISO,ITU,…) or from the scientific/industrial community (IEEE,IETF,…)? Question2 (1point) How many wires are necessary to transport data? What is the purpose of the clock signal? Question3 (1point) With a … Read moreI2C Bus