Which two of the following statements are true regarding early TCP/IP development? (Choose two.)
A. TCP/IP was the only network protocol suite available and was developed for internet work environments.
B. The focus was on solving the technical challenges of moving information quickly and reliably, not to secure it.
C. The model was developed as a flexible, fault-tolerant set of protocols.
D. The design and architecture of TCP/IP have not changed since its adoption in the early 1970s.
