Wgu D413 – Telecommunication And Wireless Communication | Objective Assessment | Oa V1 And V2 Questions And Answers Rated A+ New Update Assured Satisfaction

Wgu D413 – Telecommunication And
Wireless Communication | Objective
Assessment | Oa V1 And V2 Questions
And Answers Rated A+ New Update
Assured Satisfaction


1. A wave position relative to a reference position is best described as its:
A) Direction
B) Phase
C) Sprint
D) Frequency

Correct Answer: B
Rationale: Phase describes the position of a point in time on a waveform cycle relative
to a reference point. It is a critical concept in modulation and signal analysis.

2. Which IEEE standard describes the use of wireless personal area networks
(WPANs)?
A) IEEE 802.16
B) IEEE 802.15
C) IEEE 802.14
D) IEEE 802.11

Correct Answer: B
Rationale: IEEE 802.15 is the working group specifically for Wireless Personal Area
Networks (WPANs), which includes standards like Bluetooth.

,3. A network spread across multiple buildings in the same geographical location,
much like a college campus, is called a:
A) Campus Area Network (CAN)
B) Secure Area Network (SAN)
C) Wide Area Network (WAN)
D) Global Area Network (GAN)

Correct Answer: A
Rationale: A Campus Area Network (CAN) connects multiple buildings in a limited
geographic area, such as a university campus or corporate park.

4. Communication that happens in two directions at the same time is known as:
A) Half Complex
B) Decibal
C) Half Duplex
D) Full Duplex

Correct Answer: D
Rationale: Full duplex allows simultaneous two-way communication, meaning data can
be transmitted and received at the same time. Half duplex allows two-way
communication but not simultaneously.

5. The maximum frequency rating for Cat 5/5e cable is:
A) 100 MHz
B) 200 MHz
C) 250 MHz
D) 500 MHz

Correct Answer: A
Rationale: Category 5 and 5e cables are rated for up to 100 MHz. This rating
determines the cable's capability for data transmission.

,6. The opposition to direct current (DC) is known as:
A) Resistance
B) Voltage
C) Capacitance
D) Noise

Correct Answer: A
Rationale: Resistance is the opposition to the flow of direct current (DC). Impedance is
the opposition to alternating current (AC).

7. Which term is defined as the number of cycles a signal completes in one second?
A) Duration
B) Amplitude
C) Frequency
D) Speed

Correct Answer: C
Rationale: Frequency is the number of cycles a signal completes in one second and is
measured in Hertz (Hz).

8. A common network topology with devices connected in a circular loop is called:
A) Hybrid Topology
B) Ring Topology
C) Full Mesh Topology
D) Tree Topology

Correct Answer: B
Rationale: In a ring topology, each device connects to two others in a closed loop,
forming a circular data path.

9. Data is transferred across a fiber-optic cable using:
A) Electrical pulses
B) Light signals

, C) Radio waves
D) Magnetic fields

Correct Answer: B
Rationale: Fiber-optic cables transmit data using light signals that travel through the
core of the cable, surrounded by cladding that reflects light back into the core.

10. Which of the following is an advantage of fiber-optic cable over copper-core
cable?
A) Lower cost
B) Greater immunity to electromagnetic interference (EMI)
C) Easier to install
D) Better for short-distance connections

Correct Answer: B
Rationale: Fiber-optic cables are immune to electromagnetic interference (EMI) because
they use light rather than electrical signals, making them ideal for noisy environments.

11. The wavelength range of visible light is approximately:
A) 100 to 300 nanometers
B) 400 to 700 nanometers
C) 800 to 1100 nanometers
D) 1300 to 1600 nanometers

Correct Answer: B
Rationale: Visible light falls in the wavelength range of approximately 400 to 700
nanometers. Fiber-optic communications often use infrared wavelengths outside this
range.

12. Which three wavelengths are commonly associated with fiber-optic cable?
A) 650 nm, 750 nm, 850 nm
B) 850 nm, 1310 nm, 1550 nm