Data Link Layer - OSI MCQs with answers Page - 7

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Q. Which function is performed by the trailer of a Data Link Layer frame?

  • (A) Routing information
  • (B) Error detection
  • (C) Address resolution
  • (D) Session control

A

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Q. Which field in an Ethernet frame identifies the type of protocol encapsulated?

  • (A) Destination MAC address
  • (B) Source MAC address
  • (C) Type field
  • (D) Preamble

A

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Q. What is the size of a standard Ethernet MAC address?

  • (A) 32 bits
  • (B) 48 bits
  • (C) 64 bits
  • (D) 128 bits

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Q. Which error detection technique is more robust than parity checks?

  • (A) Checksum
  • (B) CRC
  • (C) Hamming Code
  • (D) Token Passing

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Q. Which of the following is NOT a Data Link Layer function?

  • (A) Framing
  • (B) Routing
  • (C) Flow Control
  • (D) Error Detection

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Q. Which of the following techniques corrects errors at the Data Link Layer?

  • (A) Checksum
  • (B) CRC
  • (C) Hamming Code
  • (D) Parity Check

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Q. What is the purpose of flow control in the Data Link Layer?

  • (A) Prevent congestion by regulating data transmission rate
  • (B) Encrypt data
  • (C) Resolve MAC addresses
  • (D) Assign port numbers

A

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Q. Which device is used to break up collision domains in Ethernet networks?

  • (A) Switch
  • (B) Hub
  • (C) Repeater
  • (D) Modem

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Q. Which Data Link Layer protocol is used in synchronous data links?

  • (A) HDLC
  • (B) PPP
  • (C) CSMA/CD
  • (D) Token Ring

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Q. Which sublayer of the Data Link Layer interfaces directly with the Physical Layer?

  • (A) Network Layer
  • (B) MAC sublayer
  • (C) LLC sublayer
  • (D) Transport Layer

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