CSE4344 Final Question and answers
rated A+ 2025/2026
1) What is the answer to the following riddle posed by
Paul Mockapetris (as cited by Rose in 1993): What do
you get when you cross a mobster with an international
standard?
a) Someone who makes you an offer that you can't
understand.
b) Someone who makes you an offer that you can't
possibly read.
c) Someone who makes you an offer that kills trees
instead of people.
d) Someone who makes you an offer that requires you
to use a compliance committee to follow. - correct answer ✔a) Someone who makes you an offer that
you can't
understand.
2) The network layer model has how many layers?
a) 4
b) 5
c) 6
d) 7 - correct answer ✔b) 5
3) Which of the following is a correct statement with
regards to the TCP/IP layer model?
,a) The model is well-suited to describing any protocol
stack, not just TCP/IP.
b) The model clearly delineates the physical functionality and the data link functionality.
c) The model does not clearly distinguish the concepts of services, interfaces, and protocols.
d) All of the above.
e) None of the above. - correct answer ✔c) The model does not clearly distinguish the concepts of
services, interfaces, and protocols.
4) What data/information is contained in the last 4 bytes in a Classic Ethernet frame?
a) Data
b) Frame length
c) Message padding
d) CRC - correct answer ✔d) CRC
5) In dynamic channel allocation for local area networks, carrier sense implies which of the following?
a) a channel is busy
b) the channel is wired
c) ignorance of channel usage
d) awareness of channel usage - correct answer ✔d) awareness of channel usage
6) In December of what year did the ARPANET network
go live with four nodes?
a) 1967
b) 1968
c) 1969
d) 1970 - correct answer ✔c) 1969
,7) Which of the following is a layer in the TCP/IP layer
model?
a) Internetwork.
b) Session.
c) Presentation.
d) Physical. - correct answer ✔a) internetwork
8) Which of the following were nodes in the ARPANET
when it went live?
a) UCLA
b) UCSB
c) SRI
d) All of the above.
e) None of the above - correct answer ✔d) All of the above.
9) The architecture of the Internet is comprised of which of the following?
a) Single flat network.
b) Layers.
c) Centralized services.
d) Distributed unconnected networks. - correct answer ✔Layers
10) If you are reading an RFC (Request For Comment), you are reading a document from which of the
following organizations?
a) ITU
b) IEEE
, c) IETF
d) NIST - correct answer ✔c) IETF
11) The OSI layer model has how many more layers than
the network layer model?
a) 2
b) 3
c) 4
d) 5 - correct answer ✔a) 2
12) The OSI layer model has how many more layers than
the TCP/IP layer model (Hint: the TCP/IP model and
the network layer model used in class are not the same
models.)?
a) 2
b) 3
c) 4
d) 5 - correct answer ✔b) 3
13) What mechanism might the Data Link layer use for error control?
a) ARQ
b) ARP
c) CSMA
d) All of the above.
e) None of the above. - correct answer ✔a) ARQ
rated A+ 2025/2026
1) What is the answer to the following riddle posed by
Paul Mockapetris (as cited by Rose in 1993): What do
you get when you cross a mobster with an international
standard?
a) Someone who makes you an offer that you can't
understand.
b) Someone who makes you an offer that you can't
possibly read.
c) Someone who makes you an offer that kills trees
instead of people.
d) Someone who makes you an offer that requires you
to use a compliance committee to follow. - correct answer ✔a) Someone who makes you an offer that
you can't
understand.
2) The network layer model has how many layers?
a) 4
b) 5
c) 6
d) 7 - correct answer ✔b) 5
3) Which of the following is a correct statement with
regards to the TCP/IP layer model?
,a) The model is well-suited to describing any protocol
stack, not just TCP/IP.
b) The model clearly delineates the physical functionality and the data link functionality.
c) The model does not clearly distinguish the concepts of services, interfaces, and protocols.
d) All of the above.
e) None of the above. - correct answer ✔c) The model does not clearly distinguish the concepts of
services, interfaces, and protocols.
4) What data/information is contained in the last 4 bytes in a Classic Ethernet frame?
a) Data
b) Frame length
c) Message padding
d) CRC - correct answer ✔d) CRC
5) In dynamic channel allocation for local area networks, carrier sense implies which of the following?
a) a channel is busy
b) the channel is wired
c) ignorance of channel usage
d) awareness of channel usage - correct answer ✔d) awareness of channel usage
6) In December of what year did the ARPANET network
go live with four nodes?
a) 1967
b) 1968
c) 1969
d) 1970 - correct answer ✔c) 1969
,7) Which of the following is a layer in the TCP/IP layer
model?
a) Internetwork.
b) Session.
c) Presentation.
d) Physical. - correct answer ✔a) internetwork
8) Which of the following were nodes in the ARPANET
when it went live?
a) UCLA
b) UCSB
c) SRI
d) All of the above.
e) None of the above - correct answer ✔d) All of the above.
9) The architecture of the Internet is comprised of which of the following?
a) Single flat network.
b) Layers.
c) Centralized services.
d) Distributed unconnected networks. - correct answer ✔Layers
10) If you are reading an RFC (Request For Comment), you are reading a document from which of the
following organizations?
a) ITU
b) IEEE
, c) IETF
d) NIST - correct answer ✔c) IETF
11) The OSI layer model has how many more layers than
the network layer model?
a) 2
b) 3
c) 4
d) 5 - correct answer ✔a) 2
12) The OSI layer model has how many more layers than
the TCP/IP layer model (Hint: the TCP/IP model and
the network layer model used in class are not the same
models.)?
a) 2
b) 3
c) 4
d) 5 - correct answer ✔b) 3
13) What mechanism might the Data Link layer use for error control?
a) ARQ
b) ARP
c) CSMA
d) All of the above.
e) None of the above. - correct answer ✔a) ARQ
