CS402: SAYLOR DIRECT CREDIT FINAL EXAM 2024
COMPLETE STUDYGUIDE WITH ANSWERS
Messages are sent from one computer to the set of computers in its logical
group.
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
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
c. Unreliable
_____ network topologies are the most expensive to implement, since they use
the most network cable.
Mesh
How many direct links are required to support ten nodes in a fully-connected
network topology?
n(n-1)/2
(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?
Bus
What is the RFC?
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?
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
a. Application
Which of the following OSI layers is responsible for routing IP packets?
a. Network
b. Presentation
c. Session
d. Transport
a. Network
Review this TCP packet. Which of the following sections would be different if you
were instead looking at a UDP packet?
Which of the following layers is a combination of the Application, Presentation,
and Session layer in the TCP/IP reference model?
Application Layer
Which of the following layers is unique to the TCP/IP reference model?
a. Application <- I think (?)
[not: b. Internet]
c. Transport
d. VoIP
What type of WAN technology would you recommend for an organization that
wants to lay optical fiber cable between two cities?
Sonet
Which of the following types of cable would most likely be found in a public
network?
a. Coaxial
b. Optical fiber
c. Twisted pair
d. Plenum cable
[not: a. Coaxial]
b. Optical fiber
c. Twisted pair <- I think?
d. Plenum cable
How should you begin troubleshooting a network issue where every user is
getting a host unreachable error, which usually comes from an application-layer
protocol?
a. Update the clients' IP address settings.
b. Restart the DNS server and verify all the devices.
c. Restart the DHCP server and verify all the services.
d. Update the users' browser settings and verify them using a ping command.
b. Restart the DNS server and verify all the devices.
A(n) _____ query requests the domain name that corresponds to a given IP
address.
a. inverse
You are managing a website for a tech firm, and you notice that dnsserver1 and
dnsserver2 cannot communicate properly across the company's WAN. What is
the first step you should take when trying to solve this problem?
COMPLETE STUDYGUIDE WITH ANSWERS
Messages are sent from one computer to the set of computers in its logical
group.
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
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
c. Unreliable
_____ network topologies are the most expensive to implement, since they use
the most network cable.
Mesh
How many direct links are required to support ten nodes in a fully-connected
network topology?
n(n-1)/2
(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?
Bus
What is the RFC?
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?
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
a. Application
Which of the following OSI layers is responsible for routing IP packets?
a. Network
b. Presentation
c. Session
d. Transport
a. Network
Review this TCP packet. Which of the following sections would be different if you
were instead looking at a UDP packet?
Which of the following layers is a combination of the Application, Presentation,
and Session layer in the TCP/IP reference model?
Application Layer
Which of the following layers is unique to the TCP/IP reference model?
a. Application <- I think (?)
[not: b. Internet]
c. Transport
d. VoIP
What type of WAN technology would you recommend for an organization that
wants to lay optical fiber cable between two cities?
Sonet
Which of the following types of cable would most likely be found in a public
network?
a. Coaxial
b. Optical fiber
c. Twisted pair
d. Plenum cable
[not: a. Coaxial]
b. Optical fiber
c. Twisted pair <- I think?
d. Plenum cable
How should you begin troubleshooting a network issue where every user is
getting a host unreachable error, which usually comes from an application-layer
protocol?
a. Update the clients' IP address settings.
b. Restart the DNS server and verify all the devices.
c. Restart the DHCP server and verify all the services.
d. Update the users' browser settings and verify them using a ping command.
b. Restart the DNS server and verify all the devices.
A(n) _____ query requests the domain name that corresponds to a given IP
address.
a. inverse
You are managing a website for a tech firm, and you notice that dnsserver1 and
dnsserver2 cannot communicate properly across the company's WAN. What is
the first step you should take when trying to solve this problem?
