i think the answer is A but i wanted to make sure that i am correct 

Which of the following protocols is a low power, low data rate that allows for the creation of PAN networks?

A Zigbee
B CAN
C DNP3
D Modbus

33. In TCP/IP model, which of the following protocols belong to the application layer? a) File Transfer Protocol (FTP) b) Secure Shell Host (SSH) c) Simple Mail Transfer Protocol (SMTP) d) Hypertext Transfer Protocol (HTTP) e) All of the above x

Mention any two protocols for managing neighbor discovery processes or error-reporting on IPv4 networks.

Application Layer Transport Layer IGMP Network Layer Link Layer Transmission medium Physical Layer TCP/IP PROTOCOLS STACK 3. Protocol E is: a. TCP b. DHCP c. HTTP d. IP e DNS