About this Study Set
This study set covers Telecommunications through
18 practice questions.
Testing knowledge of core, well-known telecommunications principles and technologies. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Telecommunications Fundamentals study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the primary function of the OSI model's Transport Layer?
-
A
To define physical transmission media.
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B
To provide end-to-end communication and reliability between hosts.
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C
To manage network access and physical addressing.
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D
To interpret and format data for applications.
2
Which type of network topology is most resilient to single-point failures?
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A
Bus
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B
Star
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C
Ring
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D
Mesh
3
What does the acronym 'VoIP' stand for in telecommunications?
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A
Virtual Optical Internet Protocol
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B
Voice Over Internet Protocol
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C
Vocal Online Interconnection Protocol
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D
Video Over Internet Protocol
4
Which modulation technique is most commonly used for AM radio broadcasting?
-
A
Frequency Modulation (FM)
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B
Phase Modulation (PM)
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C
Amplitude Modulation (AM)
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D
Quadrature Amplitude Modulation (QAM)
5
What is the standard protocol for sending email from a client to a mail server?
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A
HTTP
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B
FTP
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C
SMTP
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D
POP3
6
The 'Ethernet' standard primarily operates at which layer of the OSI model?
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A
Network Layer
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B
Data Link Layer
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C
Transport Layer
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D
Application Layer
7
What is the primary characteristic of a 'leased line' service?
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A
It is a shared network connection.
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B
It provides a dedicated, fixed-bandwidth connection between two points.
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C
It is typically used for public internet access.
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D
Its bandwidth can vary significantly based on network traffic.
8
Which ITU-T standard defines the basic interface for digital subscriber lines (DSL)?
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A
G.992.1 (ADSL)
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B
V.34
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C
ISDN
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D
SONET
9
In cellular telecommunications, what does the term 'handoff' refer to?
-
A
A user switching between different mobile applications.
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B
A mobile device connecting to a Wi-Fi network.
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C
A seamless transfer of a call or data session from one cell tower to another.
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D
The process of authenticating a new user on the network.
10
What is the fundamental principle behind fiber optic communication?
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A
Transmission of radio waves through glass fibers.
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B
Transmission of electrical signals along a conductive core.
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C
Transmission of light pulses through thin strands of glass or plastic.
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D
Transmission of sound waves modulated onto carrier signals.
11
Which protocol is responsible for assigning IP addresses to devices on a network?
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A
DNS
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B
HTTP
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C
DHCP
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D
ARP
12
What does the acronym 'Wi-Fi' technically stand for?
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A
Wireless Fidelity
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B
Wireless Fiber
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C
Wired Fidelity
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D
Wireless Frequency
13
The concept of 'packet switching' in data networks means that data is broken down into small units called:
-
A
Frames
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B
Segments
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C
Datagrams
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D
Packets
14
Which historical telecommunication technology allowed for simultaneous voice and data transmission over telephone lines before broadband?
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A
Dial-up modem
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B
ISDN (Integrated Services Digital Network)
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C
ADSL
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D
POTS (Plain Old Telephone Service)
15
What is the primary purpose of a Domain Name System (DNS) server?
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A
To encrypt internet traffic.
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B
To assign IP addresses to devices.
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C
To translate human-readable domain names into IP addresses.
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D
To route data packets across the internet.
16
Which of the following is a common type of multiplexing used to combine multiple signals over a single communication channel, where each signal is assigned a different time slot?
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A
Frequency Division Multiplexing (FDM)
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B
Wavelength Division Multiplexing (WDM)
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C
Code Division Multiplexing (CDM)
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D
Time Division Multiplexing (TDM)
17
What is the fundamental difference between synchronous and asynchronous transmission?
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A
Synchronous requires a clock signal for every bit; asynchronous uses start/stop bits.
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B
Asynchronous is faster than synchronous.
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C
Synchronous is used for analog signals; asynchronous for digital.
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D
Asynchronous requires a dedicated circuit; synchronous uses packet switching.
18
Which telecommunications standard defines the architecture for high-speed optical transport networks?
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A
Ethernet
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B
Wi-Fi
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C
SONET/SDH
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D
Bluetooth
