Ch. 2 Communication Models Test

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What is the purpose of using models in data communications?

To physically capture objects

To make data communications more abstract

To simplify explanation when the real object is too complex to visualize (correct)

To complicate the understanding of data communications

Which model is a model of the functionality required to communicate from the source end user to the destination end user?

Transmission Functionality Model

International Organization for Standardization Open Systems Interconnection model (correct)

End User Model

Data Communication Model

Why is it important to understand the OSI model in data communications?

It is crucial to understanding data communications (correct)

It simplifies the communication process

It goes from the abstract to the concrete

It makes data communications more complex

What does the mail analogy represent in relation to the OSI model?

The similarity to end-user-to-end-user communications Signup and view all the answers

In the mail analogy, what does 'the original sender' represent?

Source end user Signup and view all the answers

What is the critical question addressed regarding the letter in the mail analogy?

How did the sending user know that the letter was received? Signup and view all the answers

What does the OSI model describe and generally specify?

The order of functions in transmission Signup and view all the answers

What is true about using models in data communications?

'Models simplify explanation when objects are simple to visualize' Signup and view all the answers

'Modeling' is used for what purpose?

'To simplify explanation' Signup and view all the answers

'What do models represent?' According to the text, models represent:

'Objects that cannot be physically captured' Signup and view all the answers

What type of application model dictates how communications and networking software applications are applied?

User Services Signup and view all the answers

Which type of system supplies the organization, as well as the boundaries, procedures, and rules?

Business Services Signup and view all the answers

In control systems, what approach is mentioned as a better method for exchanging data?

Publisher-Subscriber approach Signup and view all the answers

What does the publisher-subscriber method allow a client application to communicate with a server for?

All of the above Signup and view all the answers

Which model refers to a stand-alone PC running a check balancing program?

One-tier model Signup and view all the answers

What are the majority of databases of any size managed by?

Relational database management systems Signup and view all the answers

In the OSI model, which layer provides the mechanical and electrical means of connecting to the medium?

Physical Layer Signup and view all the answers

Which layer of the OSI model is responsible for reliable end-user-to-end-user communications?

Transport Layer Signup and view all the answers

What is the primary function of the Session layer in the OSI model?

Virtual connection establishment Signup and view all the answers

Which model defines data communications in only five layers, in contrast to the OSI model?

Internet Model Signup and view all the answers

What does the Network layer ensure in the sending end's protocol header?

Proper IP address format Signup and view all the answers

Which standard divides the OSI Data Link layer into two distinct sublayers: Media Access Control and Logical Link Control?

IEEE 802 Model Signup and view all the answers

What does the Presentation layer ensure about communications data?

Correct syntax for applications layer Signup and view all the answers

What does the Application layer do in the OSI model?

User interface and output Signup and view all the answers

Which protocol is not OSI compliant but provides Layer 4 functionality?

TCP Signup and view all the answers

What is IEEE 802.3 standard related to?

Ethernet Signup and view all the answers

The Internet Protocol and Internet Packet Exchange are associated with which layer?

Network Layer Signup and view all the answers

What is the role of User Datagram Protocol (UDP) SAPs?

Addresses assigned by controlling program Signup and view all the answers

Which layer of the OSI model is responsible for reliable end-user-to-end-user communications?

Transport layer Signup and view all the answers

What is the primary function of the Network layer in the OSI model?

Performing end-user routing Signup and view all the answers

Which protocol is commonly used for connection-oriented communication at Layer 4 of the OSI model?

Transmission Control Protocol (TCP) Signup and view all the answers

What is the main responsibility of the Presentation layer in the OSI model?

Ensuring correct data syntax Signup and view all the answers

In the OSI model, where does the line of demarcation between data communications and data processing exist?

Between Transport and Session layers Signup and view all the answers

Which model defines data communications in only five layers, in contrast to the OSI model?

The Internet model Signup and view all the answers

What is the main focus of Layer 3 in the OSI model?

Routing functions Signup and view all the answers

What does the IEEE 802 standard specifically define for different standard networks?

Media Access Control and Logical Link Control sublayers Signup and view all the answers

Which standard network type is defined by IEEE 802.3?

Carrier Sense Multiple Access with Collision Detection network Signup and view all the answers

Which protocol is commonly used at Layer 3 of the TCP/IP suite?

Internet Protocol (IP) Signup and view all the answers

What is one of the main concerns of the Session layer in the OSI model?

Virtual connection establishment and release Signup and view all the answers

In the OSI model, what does the Physical layer provide?

Line termination and/or impedance matching Signup and view all the answers

Ch. 2 Communication Models Test

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Questions and Answers

What is the purpose of using models in data communications?

Which model is a model of the functionality required to communicate from the source end user to the destination end user?

Why is it important to understand the OSI model in data communications?

What does the mail analogy represent in relation to the OSI model?

In the mail analogy, what does 'the original sender' represent?

What is the critical question addressed regarding the letter in the mail analogy?

What does the OSI model describe and generally specify?

What is true about using models in data communications?

'Modeling' is used for what purpose?

'What do models represent?' According to the text, models represent:

What type of application model dictates how communications and networking software applications are applied?

Which type of system supplies the organization, as well as the boundaries, procedures, and rules?

In control systems, what approach is mentioned as a better method for exchanging data?

What does the publisher-subscriber method allow a client application to communicate with a server for?

Which model refers to a stand-alone PC running a check balancing program?

What are the majority of databases of any size managed by?

In the OSI model, which layer provides the mechanical and electrical means of connecting to the medium?

Which layer of the OSI model is responsible for reliable end-user-to-end-user communications?

What is the primary function of the Session layer in the OSI model?

Which model defines data communications in only five layers, in contrast to the OSI model?

What does the Network layer ensure in the sending end's protocol header?

Which standard divides the OSI Data Link layer into two distinct sublayers: Media Access Control and Logical Link Control?

What does the Presentation layer ensure about communications data?

What does the Application layer do in the OSI model?

Which protocol is not OSI compliant but provides Layer 4 functionality?

What is IEEE 802.3 standard related to?

The Internet Protocol and Internet Packet Exchange are associated with which layer?

What is the role of User Datagram Protocol (UDP) SAPs?

Which layer of the OSI model is responsible for reliable end-user-to-end-user communications?

What is the primary function of the Network layer in the OSI model?

Which protocol is commonly used for connection-oriented communication at Layer 4 of the OSI model?

What is the main responsibility of the Presentation layer in the OSI model?

In the OSI model, where does the line of demarcation between data communications and data processing exist?

Which model defines data communications in only five layers, in contrast to the OSI model?

What is the main focus of Layer 3 in the OSI model?

What does the IEEE 802 standard specifically define for different standard networks?

Which standard network type is defined by IEEE 802.3?

Which protocol is commonly used at Layer 3 of the TCP/IP suite?

What is one of the main concerns of the Session layer in the OSI model?

In the OSI model, what does the Physical layer provide?

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