Network Topologies and OSI Model Quiz
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Questions and Answers

True or false: Network Operating Systems control the file system and how applications communicate with the hard disk.

True

True or false: Network Operating Systems run on the server.

True

True or false: Linux, Windows Server, and macOS Server are examples of Network Operating Systems.

True

True or false: There are generally two resource access models in a network: peer-to-peer and client-server.

<p>True</p> Signup and view all the answers

True or false: The size of the organization, security requirements, software/hardware requirements, administration needs, cost, and future needs should be considered when deciding the resource access model.

<p>True</p> Signup and view all the answers

True or false: Networks can be easily put together without much planning.

<p>False</p> Signup and view all the answers

The Data Link layer is subdivided into two sections: Media Access Control (MAC) and Logical Link Control (LLC).

<p>True</p> Signup and view all the answers

The Physical layer describes how the data gets transmitted over a communication medium.

<p>True</p> Signup and view all the answers

The IEEE 802 standards were designed primarily for enhancements to the bottom three layers of the OSI model.

<p>True</p> Signup and view all the answers

The Logical Link Control sublayer manages data link communications.

<p>True</p> Signup and view all the answers

CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection.

<p>True</p> Signup and view all the answers

CSMA/CA tries to fix collisions after they happen.

<p>False</p> Signup and view all the answers

True or false: Peer-to-peer networks are suitable for small, simple, and inexpensive networks.

<p>True</p> Signup and view all the answers

True or false: Centralized administration and control are lacking in peer-to-peer networks.

<p>True</p> Signup and view all the answers

True or false: Peer-to-peer networks are recommended for small companies expecting future growth.

<p>False</p> Signup and view all the answers

True or false: Client-server networks are better for large networks that require a secure environment and centralized control.

<p>True</p> Signup and view all the answers

True or false: Server-based networks offer better security than peer-to-peer networks.

<p>True</p> Signup and view all the answers

True or false: Server-based networks are suitable for growing companies, large environments, and centralized security needs.

<p>True</p> Signup and view all the answers

True or false: There are four primary network topologies: Bus, Star, Ring, and Mesh.

<p>False</p> Signup and view all the answers

True or false: The Mesh topology has the best fault tolerance.

<p>True</p> Signup and view all the answers

True or false: The Star topology is more expensive than the Bus topology.

<p>True</p> Signup and view all the answers

True or false: The Ring topology is difficult to reconfigure.

<p>True</p> Signup and view all the answers

True or false: The Hybrid topology is less complex than the Mesh topology.

<p>True</p> Signup and view all the answers

True or false: The Bus topology is the most commonly installed network topology.

<p>False</p> Signup and view all the answers

True or false: The mesh topology becomes inefficient with five or more entities due to the high number of connections required?

<p>True</p> Signup and view all the answers

True or false: The hybrid topology is a mix of other topologies and is commonly seen in modern networks?

<p>True</p> Signup and view all the answers

True or false: Networks need a common language called a protocol for computers to communicate with each other?

<p>True</p> Signup and view all the answers

True or false: The OSI model was published by the ISO in 1984 to describe network protocols?

<p>True</p> Signup and view all the answers

True or false: The OSI model consists of seven layers, each adding information to the data being transmitted?

<p>True</p> Signup and view all the answers

True or false: The higher layers of the OSI model pass data through the lower layers, adding headers and trailers?

<p>False</p> Signup and view all the answers

What are the two sections of the Data Link layer?

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

What does the Physical layer describe?

<p>How the data gets transmitted over a communication medium</p> Signup and view all the answers

What does the IEEE 802 standards specify?

<p>Standards for network types</p> Signup and view all the answers

What are the two sublayers of the Data Link layer in the IEEE 802 standard?

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

What is the purpose of the Logical Link Control sublayer?

<p>To manage data link communications</p> Signup and view all the answers

What is the purpose of the Media Access Control sublayer?

<p>To watch out for data collisions and manage physical addresses (MAC addresses)</p> Signup and view all the answers

What is a network operating system (NOS) and where does it run?

<p>A network operating system (NOS) is used to control the communication with resources and the flow of data across the network. It runs on the server.</p> Signup and view all the answers

What is the purpose of a protocol in computer networks?

<p>The purpose of a protocol in computer networks is to provide a common language for computers to communicate with each other.</p> Signup and view all the answers

What are the two resource access models in a network?

<p>The two resource access models in a network are peer-to-peer and client-server.</p> Signup and view all the answers

When was the OSI model published and what was its purpose?

<p>The OSI model was published by the ISO in 1984 to describe network protocols.</p> Signup and view all the answers

What factors should be considered when deciding the resource access model?

<p>The size of the organization, security requirements, software/hardware requirements, administration needs, cost, and future needs should be considered when deciding the resource access model.</p> Signup and view all the answers

How many layers does the OSI model consist of?

<p>The OSI model consists of seven layers.</p> Signup and view all the answers

Name three examples of Network Operating Systems (NOS).

<p>Three examples of Network Operating Systems (NOS) are Linux, Microsoft’s Windows Server series, and macOS Server.</p> Signup and view all the answers

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

<p>The transport layer controls the data flow and troubleshoots any transmission problems.</p> Signup and view all the answers

What are the two major components of a typical network?

<p>The two major components of a typical network are servers and workstations.</p> Signup and view all the answers

What is the function of the data link layer in the OSI model?

<p>The data link layer arranges data into frames, includes control information, and provides the MAC address for each NIC.</p> Signup and view all the answers

What are the two major components of a typical network?

<p>The two major components of a typical network are servers and workstations.</p> Signup and view all the answers

Which topology becomes inefficient with five or more entities?

<p>The mesh topology becomes inefficient with five or more entities due to the high number of connections required.</p> Signup and view all the answers

What are the advantages and disadvantages of the Bus topology?

<p>Advantages: cheap and easy to install. Disadvantages: difficult to reconfigure and a break in the bus disables the entire network.</p> Signup and view all the answers

What are the advantages and disadvantages of the Star topology?

<p>Advantages: cheap, easy to install and reconfigure, more resilient to a single cable failure. Disadvantages: more expensive than Bus topology.</p> Signup and view all the answers

What are the advantages and disadvantages of the Ring topology?

<p>Advantages: efficient and easy to install. Disadvantages: difficult to reconfigure and very expensive.</p> Signup and view all the answers

What are the advantages and disadvantages of the Mesh topology?

<p>Advantages: best fault tolerance. Disadvantages: extremely difficult, expensive, and complex to reconfigure.</p> Signup and view all the answers

What are the advantages and disadvantages of the Hybrid topology?

<p>Advantages: combines the best features of each topology used. Disadvantages: complex (less so than Mesh).</p> Signup and view all the answers

What is the primary advantage of the Star topology over the Bus topology?

<p>More resilient to a single cable failure.</p> Signup and view all the answers

What are the advantages and disadvantages of peer-to-peer networks?

<p>Advantages: suitable for small, simple, and inexpensive networks; each computer acts as both service provider and service requestor. Disadvantages: lack of centralized administration and control, difficult network management, weak security, not recommended for small companies expecting future growth.</p> Signup and view all the answers

What are the advantages and disadvantages of client-server networks?

<p>Advantages: better for large networks, secure environment, centralized control, better security. Disadvantages: higher cost, requires dedicated, centralized servers for administrative functions and resource sharing.</p> Signup and view all the answers

What is the difference between peer-to-peer and client-server networks?

<p>Peer-to-peer networks are suitable for small, simple, and inexpensive networks, each computer acts as both service provider and service requestor. Client-server networks are better for large networks, require a secure environment and centralized control, and use dedicated, centralized servers for administrative functions and resource sharing.</p> Signup and view all the answers

Why are peer-to-peer networks not recommended for small companies expecting future growth?

<p>Peer-to-peer networks lack centralized administration and control, making network management difficult and security weak.</p> Signup and view all the answers

Why are client-server networks better for large networks?

<p>Client-server networks offer a secure environment, centralized control, and better security.</p> Signup and view all the answers

What type of networks are suitable for growing companies, large environments, and centralized security needs?

<p>Server-based networks (client-server networks) are suitable for growing companies, large environments, and centralized security needs.</p> Signup and view all the answers

CSMA/CD stands for Carrier Sense Multiple Access with ______.

<p>Collision Detection</p> Signup and view all the answers

The ______ topology becomes inefficient with five or more entities due to the high number of connections required.

<p>Mesh</p> Signup and view all the answers

The ______ topology is difficult to reconfigure.

<p>Ring</p> Signup and view all the answers

The IEEE 802 standards were designed primarily for enhancements to the bottom three layers of the OSI model. The IEEE 802 standard breaks the Data Link layer into two sublayers: a Logical Link Control (LLC) sublayer and a ______ sublayer.

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

The ______ Link Control sublayer manages data link communications.

<p>Logical</p> Signup and view all the answers

Another very well-known standard is 802.3 CSMA/CD. You might know it by its more popular name, ______.

<p>Ethernet</p> Signup and view all the answers

The OSI model was published by the ISO in ______ to describe network protocols.

<p>1984</p> Signup and view all the answers

The bottom layer sends the information out on the ______ or wirelessly.

<p>wire</p> Signup and view all the answers

The mesh topology becomes inefficient with ______ or more entities due to the high number of connections required.

<p>five</p> Signup and view all the answers

The higher layers of the OSI model pass data through the lower layers, adding ______ and trailers.

<p>headers</p> Signup and view all the answers

The OSI model layers include the ______ layer, presentation layer, session layer, transport layer, network layer, and data link layer.

<p>application</p> Signup and view all the answers

The data link layer arranges data into frames and includes control information and the ______ address for each NIC.

<p>MAC</p> Signup and view all the answers

______ topology consists of a single cable that runs to every workstation, each computer shares the same data and address path, and it is the cheapest to install.

<p>Bus</p> Signup and view all the answers

______ topology branches each network device off a central device called a hub or a switch, making it easy to add a new workstation, and it is the most commonly installed network topology.

<p>Star</p> Signup and view all the answers

______ topology connects each computer to two other computers in a circle, and it is difficult to add new computers and has low fault tolerance.

<p>Ring</p> Signup and view all the answers

______ topology connects each device to every other device, it is rarely found in wired LANs due to the complexity of cabling, but it provides high fault tolerance and is often used to connect multiple sites across WAN links.

<p>Mesh</p> Signup and view all the answers

The ______ topology combines the best features of each topology used, but it is complex (less so than Mesh).

<p>Hybrid</p> Signup and view all the answers

Physical design of the mesh topology is expensive to install and maintain, but there will always be a way to get the ______ from source to destination.

<p>data</p> Signup and view all the answers

Peer-to-peer networks are suitable for small, simple, and inexpensive networks.

<p>advantages and disadvantages</p> Signup and view all the answers

What is the primary advantage of the Star topology over the Bus topology?

<p>expensive than the Bus topology</p> Signup and view all the answers

What are the advantages and disadvantages of the Bus topology?

<p>transmitted?</p> Signup and view all the answers

What is the purpose of the Media Access Control sublayer?

<p>Ethernet networks</p> Signup and view all the answers

What is a network operating system (NOS) and where does it run?

<p>the server</p> Signup and view all the answers

What are the advantages and disadvantages of the Hybrid topology?

<p>complex than the Mesh topology</p> Signup and view all the answers

Peer-to-peer networks are also referred to as ______

<p>workgroups</p> Signup and view all the answers

Each computer in a peer-to-peer network acts as both a ______ and a ______

Signup and view all the answers

The type of resource model chosen depends on the network's ______.

<p>requirements</p> Signup and view all the answers

Peer-to-peer networks are suitable for ______, ______, and inexpensive networks.

<p>small, simple</p> Signup and view all the answers

Peer-to-peer networks are also referred to as ______.

<p>workgroups</p> Signup and view all the answers

Each computer in a peer-to-peer network acts as both a ______ and a ______.

<p>service provider, service requestor</p> Signup and view all the answers

Centralized administration and control are lacking in peer-to-peer networks, making network management ______ and security ______.

<p>difficult, weak</p> Signup and view all the answers

Server-based networks use dedicated, centralized servers for administrative functions and ______ sharing.

<p>resource</p> Signup and view all the answers

Study Notes

Understanding Network Topologies and the OSI Model

  • The mesh topology becomes inefficient with five or more entities due to the high number of connections required.
  • The hybrid topology is a mix of other topologies and is commonly seen in modern networks.
  • Networks need a common language called a protocol for computers to communicate with each other.
  • The OSI model was published by the ISO in 1984 to describe network protocols.
  • The OSI model consists of seven layers, each adding information to the data being transmitted.
  • The higher layers of the OSI model pass data through the lower layers, adding headers and trailers.
  • The bottom layer sends the information out on the wire or wirelessly.
  • At the receiving end, the bottom layer removes the header and passes the data to the next highest layer.
  • The OSI model layers include the application layer, presentation layer, session layer, transport layer, network layer, and data link layer.
  • The application layer allows access to network services.
  • The transport layer controls the data flow and troubleshoots any transmission problems.
  • The data link layer arranges data into frames and includes control information and the MAC address for each NIC.

Choosing the Right Network Design: Peer-to-Peer vs. Client-Server

  • A well-planned network design is crucial for effective and efficient implementation.
  • The type of resource model chosen depends on the network's requirements.
  • Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
  • Peer-to-peer networks are also referred to as workgroups.
  • Each computer in a peer-to-peer network acts as both a service provider and a service requestor.
  • Centralized administration and control are lacking in peer-to-peer networks, making network management difficult and security weak.
  • Peer-to-peer networks are not recommended for small companies expecting future growth.
  • Client-server networks are better for large networks that require a secure environment and centralized control.
  • Server-based networks use dedicated, centralized servers for administrative functions and resource sharing.
  • Server-based networks are also known as domains and offer better security than peer-to-peer networks.
  • In a server-based network, security is centrally administered through a domain controller.
  • Server-based networks are suitable for growing companies, large environments, and centralized security needs.

Network Topologies: Bus, Star, Ring, Mesh, and Hybrid

  • There are five primary network topologies: Bus, Star, Ring, Mesh, and Hybrid.
  • Each topology has its own advantages and disadvantages.
  • Table 6.1 summarizes the advantages and disadvantages of each topology.
  • The Bus topology is cheap and easy to install, but difficult to reconfigure and a break in the bus disables the entire network.
  • The Star topology is cheap, easy to install and reconfigure, and more resilient to a single cable failure, but more expensive than Bus topology.
  • The Ring topology is efficient and easy to install, but reconfiguration is difficult and it is very expensive.
  • The Mesh topology has the best fault tolerance, but reconfiguration is extremely difficult, expensive, and complex.
  • The Hybrid topology combines the best features of each topology used, but it is complex (less so than Mesh).
  • Bus topology consists of a single cable that runs to every workstation, each computer shares the same data and address path, and it is the cheapest to install.
  • Star topology branches each network device off a central device called a hub or a switch, making it easy to add a new workstation, and it is the most commonly installed network topology.
  • Ring topology connects each computer to two other computers in a circle, and it is difficult to add new computers and has low fault tolerance.
  • Mesh topology connects each device to every other device, it is rarely found in wired LANs due to the complexity of cabling, but it provides high fault tolerance and is often used to connect multiple sites across WAN links.
  • Physical design of the mesh topology is expensive to install and maintain, but there will always be a way to get the data from source to destination.

Choosing the Right Network Design: Peer-to-Peer vs. Client-Server

  • A well-planned network design is crucial for effective and efficient implementation.
  • The type of resource model chosen depends on the network's requirements.
  • Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
  • Peer-to-peer networks are also referred to as workgroups.
  • Each computer in a peer-to-peer network acts as both a service provider and a service requestor.
  • Centralized administration and control are lacking in peer-to-peer networks, making network management difficult and security weak.
  • Peer-to-peer networks are not recommended for small companies expecting future growth.
  • Client-server networks are better for large networks that require a secure environment and centralized control.
  • Server-based networks use dedicated, centralized servers for administrative functions and resource sharing.
  • Server-based networks are also known as domains and offer better security than peer-to-peer networks.
  • In a server-based network, security is centrally administered through a domain controller.
  • Server-based networks are suitable for growing companies, large environments, and centralized security needs.

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Description

Test your knowledge of network topologies and the OSI model with this quiz. Learn about different network topologies, the purpose of the OSI model, and the functions of each layer. Challenge yourself to see how well you understand network protocols and data transmission.

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