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

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

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

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

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 the answers are right.

problem 5: The procedure 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 illustration of what?

a) Data encapsulation
b) Same-layer interaction
c) The OSI model
d) All of the answers are right.