Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 193
Q2941:
Which device first enabled automatic signaling in telephony?
A. Touch-tone phone
B. Rotary phone
C. Cell phone
D. Analog modem
Correct Answer:
B
Chapter: 193
Q2942:
What did each digit on a rotary phone represent?
A. A tone signal
B. A separate wire
C. A visual flash
D. A digital pulse
Correct Answer:
D
Chapter: 193
Q2943:
Fill in the blank: As networks evolved, the ______ system's functionality increased.
A. transmission
B. audio
C. signaling
D. voice
Correct Answer:
C
Chapter: 193
Q2944:
What was one of the key enhancements as telephone networks evolved?
A. Manual dialing
B. Shorter cables
C. Increased signaling functionality
D. Lower call rates
Correct Answer:
C
Chapter: 193
Q2945:
Which type of switching is associated with dedicated path establishment for each call?
A. Packet switching
B. Circuit switching
C. Message switching
D. Broadcast switching
Correct Answer:
B
Chapter: 193
Q2946:
What kind of network was NOT used in early telephony?
A. Circuit-switched
B. Analog
C. Manual switching
D. Packet-switched
Correct Answer:
D
Chapter: 193
Q2947:
Fill in the blank: Modern telephone systems have evolved into a complex ______.
A. social platform
B. manual system
C. network
D. internet hub
Correct Answer:
C
Chapter: 193
Q2948:
Which of the following most accurately describes the transition in telephony signaling?
A. From fiber to copper
B. From wireless to wired
C. From manual to automatic
D. From mobile to fixed
Correct Answer:
C
Chapter: 193
Q2949:
What was a key outcome of automatic signaling?
A. Slower connections
B. Increased call charges
C. Faster call setup
D. Lower sound quality
Correct Answer:
C
Chapter: 194
Q2950:
Which of the following is a type of Analog Service provided by telephone companies?
A. Analog Switched Service
B. Packet-switched Service
C. Fiber-optic Service
D. Wired Service
Correct Answer:
A
Chapter: 194
Q2951:
What does DSL stand for in telecommunication?
A. Digital Signal Line
B. Direct Subscriber Line
C. Digital Subscriber Line
D. Digital System Line
Correct Answer:
C
Chapter: 194
Q2952:
Which of the following technologies is NOT a form of DSL?
A. ADSL
B. VDSL
C. HDLC
D. SDSL
Correct Answer:
C
Chapter: 194
Q2953:
What was the main reason for the development of DSL technology?
A. To provide higher-speed internet access
B. To reduce network congestion
C. To replace analog modems
D. To increase analog signal range
Correct Answer:
A
Chapter: 194
Q2954:
Fill in the blank: DSL technology is a set of technologies differing in the first letter such as ADSL, VDSL, HDSL, and ______.
A. SDSL
B. GSM
C. CDMA
D. TCP/IP
Correct Answer:
A
Chapter: 194
Q2955:
Which of the following is NOT a feature of DSL?
A. High-speed Internet access
B. Use of existing telephone lines
C. Compatibility with dial-up modems
D. Continuous data transfer rate
Correct Answer:
C
Chapter: 194
Q2956:
What does ADSL stand for in DSL technologies?
A. Advanced Digital Subscriber Line
B. Asynchronous Digital Subscriber Line
C. Analog Digital Subscriber Line
D. Automated Digital Subscriber Line
Correct Answer:
B
Chapter: 194
Q2957:
Which of the following is a characteristic of SDSL?
A. It supports both upload and download speeds equally
B. Only supports download speed
C. Supports only analog data
D. Operates on fiber-optic cables
Correct Answer:
A
Chapter: 194
Q2958:
What is the primary function of DSL in telecommunication?
A. To provide higher bandwidth for television signals
B. To replace satellite communications
C. To provide high-speed Internet access over existing copper lines
Correct Answer:
D
Chapter: 194
Q2959:
Fill in the blank: In a DSL network, the connection between the customer's premises and the service provider is usually ______.
A. a leased line
B. a point-to-point connection
C. a fiber-optic cable
D. a telephone line
Correct Answer:
D
Chapter: 194
Q2960:
Which DSL technology provides the highest speed for Internet access?
A. VDSL
B. ADSL
C. HDSL
D. SDSL
Correct Answer:
A