Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2941: Which device first enabled automatic signaling in telephony?
- A: Touch-tone phone
- B: Rotary phone
- C: Cell phone
- D: Analog modem
View Answer
B
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
View Answer
D
Q2943: Fill in the blank: As networks evolved, the ______ system's functionality increased.
- A: transmission
- B: audio
- C: signaling
- D: voice
View Answer
C
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
View Answer
C
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
View Answer
B
Q2946: What kind of network was NOT used in early telephony?
- A: Circuit-switched
- B: Analog
- C: Manual switching
- D: Packet-switched
View Answer
D
Q2947: Fill in the blank: Modern telephone systems have evolved into a complex ______.
- A: social platform
- B: manual system
- C: network
- D: internet hub
View Answer
C
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
View Answer
C
Q2949: What was a key outcome of automatic signaling?
- A: Slower connections
- B: Increased call charges
- C: Faster call setup
- D: Lower sound quality
View Answer
C
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
View Answer
A