CS402: SAYLOR DIRECT CREDIT FINAL
EXAM | SAYLOR ACADEMY 2025
QUESTIONS AND ANSWERS
___ messages are sent from one computer to the set of computers in its logical group. -
ANS Multicast
Which of the following is a network that spans multiple LANs but is smaller than a MAN?
a. CAN
b. PAN
c. TAN
d. WAN - ANS a. CAN
If the physical layer delivers 1000 bits to the receiver, but the receiver only receives 900 bits,
how could you describe the behavior of the physical layer?
a. Reliable
b. Error-free
c. Unreliable
d. Compressed - ANS c. Unreliable
_____ network topologies are the most expensive to implement, since they use the most
network cable. - ANS Mesh
How many direct links are required to support ten nodes in a fully-connected network
topology? - ANS n(n-1)/2
1 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
, (10)((10)-1)/2
10(9)/2
=45
Which of the following network topologies is relatively cheap to implement, since it uses a
single wire to connect every computer in the network? - ANS Bus
What is the RFC? - ANS A database of Internet service providers
Which kind of protocol would you use to stream live programs when you do not want to miss
any future or present events, but you do not care as much about missing past packets? -
ANS UDP
The protocols for email and web file access are described in which layer of the Internet
protocol?
a. Application
b. Network
c. Transport
d. Session - ANS a. Application
Which of the following OSI layers is responsible for routing IP packets?
a. Network
b. Presentation
c. Session
d. Transport - ANS a. Network
Review this TCP packet. Which of the following sections would be different if you were instead
looking at a UDP packet? - ANS
2 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
EXAM | SAYLOR ACADEMY 2025
QUESTIONS AND ANSWERS
___ messages are sent from one computer to the set of computers in its logical group. -
ANS Multicast
Which of the following is a network that spans multiple LANs but is smaller than a MAN?
a. CAN
b. PAN
c. TAN
d. WAN - ANS a. CAN
If the physical layer delivers 1000 bits to the receiver, but the receiver only receives 900 bits,
how could you describe the behavior of the physical layer?
a. Reliable
b. Error-free
c. Unreliable
d. Compressed - ANS c. Unreliable
_____ network topologies are the most expensive to implement, since they use the most
network cable. - ANS Mesh
How many direct links are required to support ten nodes in a fully-connected network
topology? - ANS n(n-1)/2
1 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
, (10)((10)-1)/2
10(9)/2
=45
Which of the following network topologies is relatively cheap to implement, since it uses a
single wire to connect every computer in the network? - ANS Bus
What is the RFC? - ANS A database of Internet service providers
Which kind of protocol would you use to stream live programs when you do not want to miss
any future or present events, but you do not care as much about missing past packets? -
ANS UDP
The protocols for email and web file access are described in which layer of the Internet
protocol?
a. Application
b. Network
c. Transport
d. Session - ANS a. Application
Which of the following OSI layers is responsible for routing IP packets?
a. Network
b. Presentation
c. Session
d. Transport - ANS a. Network
Review this TCP packet. Which of the following sections would be different if you were instead
looking at a UDP packet? - ANS
2 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
