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200-150 · Question #205

How many layers are present in the OSI layer model versus the TCP/IP model?

The correct answer is D. seven layers in OSI and four layers in TCP/IP. The OSI model has 7 layers and the TCP/IP model has 4 layers.

Cisco Data Center Networking Technologies

Question

How many layers are present in the OSI layer model versus the TCP/IP model?

Options

  • Afive layers in OSI and six layers in TCP/IP
  • Bsix layers in OSI and three layers in TCP/IP
  • Cfour layers in OSI and seven layers in TCP/IP
  • Dseven layers in OSI and four layers in TCP/IP

How the community answered

(43 responses)
  • A
    7% (3)
  • B
    5% (2)
  • C
    2% (1)
  • D
    86% (37)

Why each option

The OSI model has 7 layers and the TCP/IP model has 4 layers.

Afive layers in OSI and six layers in TCP/IP

This inverts the relationship - OSI has seven layers, not five, and TCP/IP has four layers, not six.

Bsix layers in OSI and three layers in TCP/IP

OSI has seven layers, not six, and TCP/IP has four layers, not three.

Cfour layers in OSI and seven layers in TCP/IP

This reverses the correct counts - OSI has seven layers and TCP/IP has four, not the other way around.

Dseven layers in OSI and four layers in TCP/IPCorrect

The OSI model defines seven distinct layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. The TCP/IP model maps those into four layers: Network Access, Internet, Transport, and Application, consolidating the lower and upper OSI layers respectively.

Concept tested: OSI model vs TCP/IP model layer counts

Source: https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13769-5.html

Topics

#OSI model#TCP/IP model#network layers#protocol models

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