CMIT 350 6381 Final Exam 2023 Individual Responses
Question 1: Correct
You need to implement a WAN solution for a small business located in a remote
mountain location. Currently, the local telecom only offers basic phone service
at the location. Leased lines are not available.
Which option would be the most appropriate choice?
Frame Relay
POTS with a modem
VSAT satellite link
ATM
Explanation
In locations where wired WAN service isn't available due to location or physical
geography, a satellite-based WAN connection can be established using Very
Small Aperture Terminal (VSAT) satellite links. VSAT uses satellite dishes, radio
signals, and satellites to provide wireless WAN connectivity.
A dial-up POTS WAN connection could be used in this scenario. However, the
data transfer speeds would be unacceptably slow. ATM and Frame Relay require
the telecom to provide a wired WAN infrastructure, which isn't available in this
scenario.
References
LabSim for Routing and Switching Pro, Section 13.1.
[CCNA_AllQuestions.exm OTHER_WANS_05]
Question 2: Correct
Which VSAT component provides data transmission capabilities over a
satellite link?
Block Upconverter (BUC)
Low-noise Block Downconverter (LNB)
Orthomode transducer (OMT)
Indoor unit (IDU)
Explanation
A VSAT implementation consists of the following components:
• Antenna
• Block Upconverter (BUC) for transmitting data
• Low-noise Block Downconverter (LNB) for receiving data
• Orthomode transducer (OMT) to combine and/or separate two microwave signals
• Interfacility link cable (IFL)
•
Indo
Indoo
r
r
unit
unit
(IDU)
(IDU)
to
to
provid
provide an interface to the organization's network using two
physical connections: