This app contains 12 past exam questions from the 2nd-class Telecommunications Engineering Construction Management Engineer exam, spanning the first semester of 2025 through R1 (2025 semester, 2025 semester, 2024 semester, 2024 semester, 2023 semester, 2023 semester, 2022 semester, 2022 semester, 2021 semester, 2021 semester, 2020 semester, 2019 semester, 2019 semester).
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*Includes 2024 1st exam (first and second semesters), 2023 1st exam (first and second semesters), 2022 1st exam (first and second semesters), 2021 1st exam (first and second semesters), 2020 (second semesters), and 2019 (first and second semesters).
*2024 1st exam No. 51 has been omitted for display reasons.
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2024 [1st] First Term Question [No. 1]
What is the appropriate value of capacitance C' [F] when the distance d [m] between the electrodes is halved and the area S [m2] is doubled?

However, the end effect of the capacitor is ignored.

4C [F]
2024 [1st] First Term Question [No. 2]
In the bridge circuit shown below, when points A and B are at the same potential, what is the appropriate value of R [Ω]?
2024 [1st Term] First Semester Problem [No. 3]
In the RL parallel circuit shown below, if the resistance R = 1 [Ω] and the inductive reactance XL = 1/√3 [Ω], what is the appropriate value for the magnitude of the combined impedance Z [Ω]?
2024 [1st Term] First Semester Problem [No. 4]
What is the appropriate hexadecimal conversion of the binary number 1010 0100 1100 0010?
2024 [1st Term] First Semester Problem [No. 5]
What is the appropriate truth table for the logic circuit shown below?
2024 [1st Term] First Semester Problem [No. 6]
In the frequency-shift keying (FSK) shown below, what is the appropriate value for the modulation rate B [baud] when the pulse width T per transmitted symbol of the digital signal is 2.5 [ms]?
FY2024 [1st] First Term Question [No. 7]
Which of the following combinations of words fit (A) through (C) in the [ ] of the following statement regarding amplitude modulation (AM)?
"In the frequency spectrum of amplitude modulation, [B] and [C] appear above and below [A] as the center."
(A) Carrier frequency\n(B) Symmetric\n(C) Sidebands
FY2024 [1st] First Term Question [No. 8]
Which of the following statements regarding UHF radio waves is not appropriate?
Radio wave propagation is primarily via ground waves and ionospheric reflections.
FY2024 [1st] First Term Question [No. 9]
Which of the following is the appropriate name for the following statement regarding audio data file formats?
"A file format that stores sampled data of live sound. It is usually used uncompressed, resulting in a large data volume."
WAV
2024 [1st] First semester Question [No. 10]
Which of the following is an accurate description of an interpreter?
An interpreter executes a source program by translating it line by line into machine code.
2024 [1st] First semester Question [No. 11]
Which of the following is an inaccurate description of semiconductors?
A p-type semiconductor has more free electrons than holes.
2024 [1st] First semester Question [No. 12]
Which of the following is an inaccurate description of sequence control?
It compares the controlled variable with the target value and performs corrective action to match the two.
2024 [1st] First semester Question [No. 13]
Which of the following is an inaccurate description of the types, structure, and characteristics of optical fiber?
Optical fiber consists of a central core with a low refractive index surrounded by a cladding with a high refractive index.
FY2024 [1st] First Term Question [No. 14]
Which of the following combinations of words fit (A) and (B) in the following statement regarding time division multiplexing (TDM)?
"Time division multiplexing is a multiplexing method in which multiple digital signals are divided and assigned to (B) for transmission over (A) transmission paths."
(A) One (B) Time-dependent
FY2024 [1st] First Term Question [No. 15]
Which of the following is not a description of UTP cables used in LANs?
It is a shielded twisted pair cable.
FY2024 [1st] First Term Question [No. 16]
Which of the following is a description of the following statement regarding internet connections fit (A) and (B) in the following statement regarding internet connections?
"FTTH is a communications method that directly connects [(a)] from the central office to the subscriber's premises. [(b)] is installed on the subscriber's side, typically connecting a router to computers and communications devices."
(a) Optical fiber (b) ONU
2024 [1st] First semester Question [No. 17]
Which of the following terms best describes spatial multiplexing transmission, used in fourth-generation (4G) mobile phone systems such as LTE?
"It is a technology that uses multiple antennas on both the transmitting and receiving sides to multiple independent transmission paths for multiplexed communications."
MIMO
2024 [1st] First semester Question [No. 18]
Which of the following terms best describes fading?
"This type of fading occurs when electromagnetic waves reflect off or penetrate the ionosphere, depending on the height and electron density of the ionosphere."
Sudden fading
2024 [1st] First semester Question [No. 19]
Which of the following combinations of words and phrases fit (A) and (B) in the following statement regarding the gain of antennas used in wireless communications?
"Antenna gain is given by the ratio of the maximum radiant power of the antenna to the maximum radiant power of a reference antenna when the same input power is applied. The gain when the reference antenna is an antenna that radiates radio waves evenly in all directions is called the [B] gain."
(A) Isotropic (B) Absolute
2024 [1st] First semester Question [No. 20]
Which of the following statements regarding DSRC (Dedicated Short-Range Communications) used in Japan's ITS (Intelligent Transport Systems) is inappropriate?
It is used to provide traffic congestion information and travel times at Wi-Fi hotspots.
2024 [1st] First Term Question [No. 21]
Which of the following is an inaccurate statement regarding IP in TCP/IP?
IP is a data link layer protocol in the OSI reference model.
2024 [1st] First Term Question [No. 22]
Which of the following is an accurate statement regarding a network device called a bridge?
A bridge is a device that connects multiple LANs and relays data at the data link layer of the OSI reference model. It relays MAC frames, reads their MAC addresses, and either forwards or discards them.
2024 [1st] First Term Question [No. 23]
Which of the following is an accurate name for the following statement regarding authentication technology?
"A technology that uses public key cryptography to verify that transmitted electronic data has not been tampered with and is the original of the person in question."
Digital Signature
2024 [1st] First Term Question [No. 24]
Which of the following is an accurate statement regarding Class C, a method of representing IP addresses?
The first three bits of an IP address are "110." 2024 [1st] First Term Question [No. 25]
Which of the following is the name of the phenomenon that corresponds to the following statement regarding computer virtual memory management?
"When the total memory capacity required for program processing is significantly larger than the capacity of main memory, frequent swap-ins and swap-outs occur, preventing the actual processing from progressing."
Thrashing
2024 [1st] First Term Question [No. 26]
Which of the following combinations of words fit (A) and (B) in the [ ] of the following statement regarding USB?
"USB is a serial interface that connects computers to peripheral devices. It can connect up to [A] peripheral devices, and the USB 3.2 standard has a maximum transfer speed of [B] Gbps."
(A) 127 (B) 20
2024 [1st] First Term Question [No. 27]
Which of the following is not a type of semiconductor memory device used as a secondary memory device in computers?
HDD
2024 [First] First Semester Question [No. 28]
Which of the following best describes the information security issue?
"The act of obtaining security-related information from corporate garbage."
Social Engineering
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