Final answer:
The DoD Model's Host-to-Host layer includes protocols such as IP, ICMP, TCP, and UDP, which are responsible for end-to-end communication and data flow control.
Step-by-step explanation:
The Department of Defense (DoD) model, which is also known as the TCP/IP model, includes various protocols at its different layers. In the DoD model, the Host-to-Host layer is equivalent to the Transport layer of the OSI model. The protocols that operate at the Host-to-Host layer are responsible for end-to-end communication and data flow control.
The correct answer to the question 'What protocols in the DoD Model are in Host-to-Host?' is B) IP, ICMP, TCP, UDP. The IP (Internet Protocol) is used for routing and addressing packets of data. ICMP (Internet Control Message Protocol) is used for error messages and operational queries. TCP (Transmission Control Protocol) provides reliable, ordered, and error-checked delivery of a stream of data between applications. UDP (User Datagram Protocol) is used for simpler transmission needs where error checking and packet sequencing are not necessary, making it faster but less reliable than TCP.