CS 2204 Final Exam Questions and Answers- University of the People

Question 1
MD-5 and SHA-1 secure-hash codes are often used in network error-detection because they
are very fast to compute.

Select one:
True
False

Question 2
How many TCP segments are normally exchanged to complete a normal close (from the
ESTABLISHED state)?

Select one:
a. 2
b. 1
c. 3
d. 5
e. 4

Question 3
A traditional, land line, telephone network is typically a _______________ network.

Select one:
a. Packet Switched
b. Circuit Switched
c. Mesh
d. VPN
e. connection-less

Question 4
Ethernet switches can be used to connect two computers that do not use network layer
protocols (e.g. to exchange raw Ethernet frames).

Select one:
True
False

Question 5
Silly window syndrome is a problem that can occur when data is passed to the sending TCP
entity in large blocks, but an interactive application on the receiving side reads 1 byte at a
time.

Select one:
True
False

Question 6

, TCP’s congestion management is _______.

Select one:
a. statistically based
b. non-adaptive
c. optionally configured
d. window-based
e. rate-based

Question 7
In Wi-Fi, after a collision is presumed to have occurred when the link-layer ACK is not
received, there is an exponential-backoff mechanism similar to Ethernet’s.

Select one:
True
False

Question 8
Home ADSL Internet access run over this type of cable (in most cases):

Select one:
a. coaxial
b. unshielded twisted pair
c. single-mode fiber optic
d. house electrical wiring

Question 9
UDP is used by the Remote Procedure Call (RPC) protocol.

Select one:
True
False

Question 10
When no other route to the destination exists, what does a host use to access a host outside
of the local network?

Select one:
a. default route
b. local switch
c. transfer data
d. IP configuration
e. tunneling

Question 11
From the TCP “ESTABLISHED” connection state, what is the next state after the application
closes (“active close”)?