problem 1: Which of the given protocols are illustrations of TCP/IP transport layer protocols?

a. Ethernet
b. UDP
c. IP
d. HTTP
e. SMTP
f. TCP

problem 2: Which of the given protocols are illustrations of TCP/IP network access layer protocols?

a. Ethernet
b. HTTP
c. UDP
d. IP
e. SMTP
f. TCP
g. PPP

problem 3: The procedure of HTTP asking TCP to send some data and ensure that it is received properly is an illustration of what?

a. Same-layer interaction.
b. Adjacent-layer interaction.
c. The OSI model.
d. All the other answers are correct.

problem 4: The procedure of TCP on one computer marking a segment as segment 1, and the receiving computer then acknowledging the receipt of segment 1, is an illustration of what?

a. Data encapsulation
b. Same-layer interaction
c. Adjacent-layer interaction
d. The OSI model
e. None of answers are correct.

problem 5: The process of a web server adding a TCP header to a web page, followed by adding an IP header, and then a data link header and trailer is an ex of what?

a. Data encapsulation
b. Same-layer interaction
c. The OSI model
d. All of these answers are correct.