Details
2024/2023/2022/2021/2020/2019 1st class telecommunications construction construction management engineer department past questions/Reiwa 6 - Reiwa 1
This is an app for people who aim to pass exams while commuting, studying on their own, and reviewing past exam questions.
There are no in-app purchases and no ads.
You can study repeatedly on your mobile phone or tablet.
For each question, you can check the answer immediately by clicking [Question ⇒ Answer].
In addition, the question text is also listed on the answer page, making it easy to review the questions.
You can check your self-understanding in the "Learning Confirmation Test (R6-R1)" where 10 questions are randomly asked.
Study little by little on your phone or tablet while commuting by train or bus or during your breaks.
*Contains 1st year of Reiwa 6, 1st year of Reiwa 5, 1st year of Reiwa 4, 1st year of Reiwa 3, 2nd year of Reiwa, and 1st year of Reiwa.
One of the important things in order to obtain qualifications is to review past questions.
By going through past questions, you can understand how the questions are structured, what trends the questions tend to appear in, and what areas you are weak in and strong at.You can also use past questions to prepare for and plan your exams, such as which areas to focus your efforts on studying and where to earn points.
Find your own learning method and proceed with your studies in a planned manner.
[Example problem]
[Problem] R06-A-1
If the amount of charge Q₀[C] is stored when voltage V is applied to the parallel plate air capacitor with distance d[m] between the electrodes shown in Figure 1, what is the appropriate amount of charge Q[C] to be stored when the area of the electrode plates is not changed as shown in Figure 2, the distance between the electrodes is 1/2d, a dielectric material with relative dielectric constant εr = 2 is inserted between the electrodes without any gap, and voltage V is applied?
However, the end effect of the capacitor shall not be considered.
[Problem] R06-A-2
Which of the following is an appropriate combination of words that applies to (a) and (b) in [ ] in the following description regarding a toroidal core coil?
``When the current flowing in the coil changes, the [(A)] of the coil also changes, and an induced electromotive force is generated in the coil itself.When there is no leakage of magnetic flux in the circular iron core coil with the primary coil and secondary coil wound in the figure below, the change in [(A)] of the secondary coil is proportional to the change in the current in the primary coil.Therefore, the induced electromotive force generated in the secondary coil is proportional to the change in the current in the primary coil, and the proportionality constant in this case is called [(A)].
[Problem] R06-A-3
When I connected a 400[kΩ] series resistor to a voltmeter with a maximum scale of 50[V] shown in the figure below and measured a voltage of 40[V], the voltmeter showed a value of 8[V].
Which of the following is an appropriate combination of the value of the internal resistance rv [kΩ] of this voltmeter and the value of the series resistor Rm [kΩ] to be connected if this voltmeter is to be able to measure voltages up to 300[V]?
[Problem] R06-A-4
In the RLC series circuit shown in the figure below, when AC power supply voltage E = 100 [V], resistance R = 10 [Ω], inductive reactance XL = 12√3 [Ω], and capacitive reactance Xc = 2√3 [Ω], which is the appropriate value for the magnitude of the current flowing in the circuit, I [A]?
[Problem] R06-A-5
For four events P(i) (i=1 to 4) that can occur in a certain information source, when the probability of each occurrence is P(1)=1/2, P(2)=1/4, P(3)=1/8, P(4)=1/8, which is the appropriate value for the average amount of information (entropy) H[bit] possessed by this information source?
[Problem] R06-A-6
When an audio signal with a maximum frequency of 8 [kHz] is encoded in 8 [bit] binary numbers using pulse code modulation (PCM) and transmitted in real time, which is the appropriate value for the minimum required transmission speed S [kbps]?
[Problem] R06-A-7
What is the appropriate value for the availability rate At of the entire computer system shown in the figure below, in which System 1 with availability rate A₁=0.90 and System 2 with availability rate A₂=0.90 are connected in parallel, and System 3 with availability rate A₃=0.80 is connected in series?
[Problem] R06-A-8
When performing decimal subtraction (141)₁₀-(65)₁₀ using binary complement representation, which combination of words is appropriate for (a) and (b) in [ ] in the following calculation process?
[Problem] R06-A-9
Which of the following is an appropriate logical formula for the output F in the logic circuit shown in the figure below?
However, for logical variables A and B, A+B represents the logical sum, A and B represent the logical product, and Ā represents the negation of A.
[Problem] R06-A-10
Given the static characteristics of the transistor (grounded emitter) shown in the figure below, which is the appropriate value for the DC current amplification factor hFE when VCE=5[V] and IB=10[μA]?
However, IB is the base current, Ic is the collector current, VBE is the base voltage, and VCE is the collector voltage.
[Problem] R06-A-11
Which of the following statements regarding phase shift keying (PSK) digital modulation is not appropriate?
8PSK is more resistant to phase changes due to noise during transmission and has better error characteristics than QPSK.
[Problem] R06-A-12
In OFDM, a guard band is provided between subcarriers to prevent adjacent channel interference from occurring.
[Problem] R06-A-13
Which of the following is an appropriate description of the protocol layer of the OSI reference model?
The OSI reference model is a model that categorizes and organizes the functions necessary for communication into seven layers, and is a guideline for understanding the design and functions of protocols in computer networks.
[Problem] R06-A-14
Which of the following is an appropriate description of the functions of a database management system (DBMS)?
The database operation function refers to the function of updating data and searching for data based on inquiries from users.
[Problem] R06-A-15
Which of the following is not an appropriate description of the functions of a computer's OS?
User management is a function that manages the allocation of main memory to multiple programs executed within a computer.
[Problem] R06-A-16
Which of the following is not an appropriate statement regarding the method of representing character data (character code)?
ASCII is a character code established by the American National Standards Institute (ANSI), which assigns alphabets, numbers, symbols, half-width katakana, and control symbols.
[Problem] R06-A-17
Which of the following is the appropriate amplitude characteristic of the output signal Vout when the input signal Vin is applied to the filter circuit shown in the figure below?
[Problem] R06-A-18
Which of the following statements regarding semiconductors is not appropriate?
In n-type semiconductors, which are silicon intrinsic semiconductors mixed with donors such as arsenic, the number of free electrons is smaller than the number of holes.
[Problem] R06-A-19
In the Hartley oscillator circuit shown in the figure below, if the inductance of the two coils is L1[H] and L2[H], the mutual inductance between the two coils is M[H], and the capacitance of the capacitor is C[F], which is the appropriate formula for calculating the oscillation frequency ƒ[Hz] of this circuit?
[Problem] R06-A-20
Which of the following statements regarding optical modulation methods is not appropriate?
Direct modulation has limitations on transmission distance because high-speed modulation causes chromatic dispersion, which is a wavelength fluctuation phenomenon during modulation.
[Problem] R06-A-21
Which of the following statements regarding optical fiber communication repeaters is incorrect?
A 3R regenerative repeater converts an optical signal into an electrical signal using a light receiving element, performs equalization amplification, timing extraction, and multiplexing, and then converts it into an optical signal and sends it out.
[Problem] R06-A-22
Which of the following statements regarding SIP used in IP telephones, etc. is not appropriate?
The SIP message body is used to notify the media, port number, etc. to be used after a session is established, and is described using RTP (Realtime Transport Protocol).
[Problem] R06-A-23
Which of the following statements regarding coaxial cables is incorrect?
Compared to waveguides, it has less loss, and its value decreases as the frequency increases.
[Problem] R06-A-24
Which of the following is an appropriate description of Rayleigh scattering loss, which is a cause of optical loss in optical fibers?
The refractive index varies slightly depending on the location due to changes in the density of the glass in the optical fiber, and this fluctuation in the refractive index causes light to scatter, resulting in loss.
[Problem] R06-A-25
Which of the following statements regarding wireless LAN standards is not appropriate?
IEEE802.11a uses radio waves in the 2.4GHz band and employs a direct spread spectrum method.
[Problem] R06-A-26
Which of the following statements regarding antennas used in wireless communications is incorrect?
Offset parabolic antennas improve sidelobe characteristics by placing a primary radiator in front of a parabolic reflector that serves as a transmission path.
*We make every effort to ensure that the points, etc. in the app are as accurate as possible, but please note that we do not necessarily guarantee accuracy.
We will not be held responsible for any inconvenience or disadvantage caused by using this application.
*The content within the app may be added, updated, changed, or modified without prior notice.
