Physical Layer - OSI MCQs with answers Page - 5

You will find multiple-choice questions (MCQs) related to #Physical Layer - OSI here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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A

Admin • 802.91K Points
Coach

Q. Which type of multiplexing is commonly used in fiber optic communication?

  • (A) Frequency Division Multiplexing (FDM)
  • (B) Time Division Multiplexing (TDM)
  • (C) Wavelength Division Multiplexing (WDM)
  • (D) Code Division Multiplexing (CDM)

A

Admin • 802.91K Points
Coach

Q. What does NRZ stand for in Physical Layer encoding?

  • (A) Non-Redundant Zeros
  • (B) Non-Return to Zero
  • (C) Network Re-transmission Zone
  • (D) Next Return to Zero

A

Admin • 802.91K Points
Coach

Q. Which of these is an example of an unguided transmission medium?

  • (A) Coaxial cable
  • (B) Twisted pair cable
  • (C) Fiber optic cable
  • (D) Radio waves

A

Admin • 802.91K Points
Coach

Q. What does the term 'Baud rate' measure?

  • (A) Bits transmitted per second
  • (B) Signal changes per second
  • (C) Data packet size
  • (D) Signal wavelength

A

Admin • 802.91K Points
Coach

Q. Which transmission medium is most resistant to electromagnetic interference?

  • (A) Twisted pair cable
  • (B) Coaxial cable
  • (C) Fiber optic cable
  • (D) Microwave

A

Admin • 802.91K Points
Coach

Q. Which OSI layer defines the mechanical, electrical, and procedural interfaces to the physical medium?

  • (A) Physical Layer
  • (B) Data Link Layer
  • (C) Network Layer
  • (D) Transport Layer

A

Admin • 802.91K Points
Coach

Q. What type of connection is established by simplex transmission at the Physical Layer?

  • (A) Two-way communication
  • (B) One-way communication
  • (C) Bidirectional communication
  • (D) None of the above

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Admin • 802.91K Points
Coach

Q. What does EMI stand for, in the context of the Physical Layer?

  • (A) Electromagnetic Induction
  • (B) Electromagnetic Interference
  • (C) Electronic Media Integration
  • (D) Energy Modulation Index

A

Admin • 802.91K Points
Coach

Q. Which of these is NOT a common encoding method used at the Physical Layer?

  • (A) NRZ
  • (B) Manchester Encoding
  • (C) Base64 Encoding
  • (D) AMI

A

Admin • 802.91K Points
Coach

Q. What is the purpose of cladding in fiber optic cables?

  • (A) Prevent electromagnetic interference
  • (B) Reflect light back into the core
  • (C) Increase data speed
  • (D) Reduce power consumption
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