Data Link Layer vs Physical Layer

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Questions and Answers

In the OSI model, which layers are combined into one Application Layer in the TCP/IP model?

  • Layers 1, 2, and 3
  • Layers 2, 3, and 4
  • Layers 3, 4, and 5
  • Layers 5, 6, and 7 (correct)

What responsibility is not taken by TCP/IP, leaving it to the underlying transport layer?

  • Error recovery
  • Sequencing and acknowledgment functions (correct)
  • Data encapsulation
  • Flow control

What is a key difference between TCP/IP and OSI regarding their design purpose?

  • OSI is designed for specific communication problems
  • TCP/IP is more comprehensive than OSI
  • TCP/IP is a generic communication model
  • TCP/IP is protocol-independent, while OSI is protocol-specific (correct)

Which layers are mandatory to enable any data communication according to the text?

<p>Layers 1, 2, and 3 (C)</p> Signup and view all the answers

How do most applications behave in terms of layer usage in the TCP/IP model?

<p>They use all layers from 1-7 (A)</p> Signup and view all the answers

What does OSI model NOT do in comparison to TCP/IP?

<p>OSI takes responsibility for sequencing and acknowledgment functions (D)</p> Signup and view all the answers

Which organization created the TCP/IP model?

<p>US Department of Defense (B)</p> Signup and view all the answers

What is a distinguishing feature of OSI compared to TCP/IP in terms of its focus?

<p>OSI concentrates on protocol-specific communication (B)</p> Signup and view all the answers

Which layers from the OSI model are combined into the Network Access Layer in TCP/IP?

<p>Layers 1 and 2 (D)</p> Signup and view all the answers

What role does TCP/IP play in data communication according to the text?

<p>Solves specific communication problems through standard protocols (B)</p> Signup and view all the answers

Which model was the first standard for network communications adopted by major computer and telecommunication companies in the early 1980s?

<p>OSI model (C)</p> Signup and view all the answers

Which layer of the OSI model is directly used by end-user software like web browsers and email clients?

<p>Application Layer (D)</p> Signup and view all the answers

What is the main function of the Presentation Layer in the OSI model?

<p>Prepare data for the Application Layer (B)</p> Signup and view all the answers

Which layer of the OSI model defines how two devices should encode, encrypt, and compress data for correct reception?

<p>Presentation Layer (B)</p> Signup and view all the answers

When was the OSI model introduced by representatives of major computer and telecom companies?

<p>1983 (C)</p> Signup and view all the answers

Which protocol is NOT an example of an application layer protocol mentioned in the text?

<p>Ethernet Protocol (C)</p> Signup and view all the answers

What is the role of the presentation layer in the OSI model?

<p>Preparing data for transmission over the session layer (A)</p> Signup and view all the answers

Which layer is responsible for ensuring that sessions remain open and functional during data transfer in the OSI model?

<p>Session Layer (D)</p> Signup and view all the answers

What is the main function of the transport layer in the OSI model?

<p>Flow control and error checking (B)</p> Signup and view all the answers

Which layer of the OSI model is responsible for reassembling segments on the receiving end?

<p>Transport Layer (D)</p> Signup and view all the answers

What does the network layer use to route packets to a destination node in the OSI model?

<p>Network addresses (D)</p> Signup and view all the answers

In which layer of the OSI model does the data transfer resume from the last checkpoint if interrupted?

<p>Session Layer (B)</p> Signup and view all the answers

What is the main function of the data link layer in a network?

<p>Break up packets into frames and send them from source to destination (D)</p> Signup and view all the answers

Which part of the data link layer uses MAC addresses to connect devices?

<p>Media Access Control (MAC) (C)</p> Signup and view all the answers

What aspect does the OSI model help network device manufacturers with?

<p>Create hardware and software for building networks (D)</p> Signup and view all the answers

Which layer of the OSI model takes care of bit rate control?

<p>Physical Layer (A)</p> Signup and view all the answers

What does the Logical Link Control (LLC) part of the data link layer do?

<p>Identify network protocols and perform error checking (D)</p> Signup and view all the answers

What is the responsibility of the physical layer in a network?

<p>Define the physical cable or wireless connection (C)</p> Signup and view all the answers

In the TCP/IP model, which layers are combined into one Application Layer?

<p>Layers 5, 6, and 7 (D)</p> Signup and view all the answers

Which layers are mandatory to enable any data communication in both the OSI and TCP/IP models?

<p>Layers 1, 2, and 3 (C)</p> Signup and view all the answers

What is a distinguishing feature of the OSI model compared to TCP/IP in terms of its design purpose?

<p>Generic and protocol-independent (D)</p> Signup and view all the answers

Which organization created the TCP/IP model?

<p>US Department of Defense (C)</p> Signup and view all the answers

What does TCP/IP not take responsibility for in terms of sequencing and acknowledgement functions?

<p>Transport Layer functions (D)</p> Signup and view all the answers

How do most applications behave in terms of layer usage according to the text?

<p>Use all seven layers (B)</p> Signup and view all the answers

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