Podcast
Questions and Answers
True or false: Network Operating Systems control the file system and how applications communicate with the hard disk.
True or false: Network Operating Systems control the file system and how applications communicate with the hard disk.
True (A)
True or false: Network Operating Systems run on the server.
True or false: Network Operating Systems run on the server.
True (A)
True or false: Linux, Windows Server, and macOS Server are examples of Network Operating Systems.
True or false: Linux, Windows Server, and macOS Server are examples of Network Operating Systems.
True (A)
True or false: There are generally two resource access models in a network: peer-to-peer and client-server.
True or false: There are generally two resource access models in a network: peer-to-peer and client-server.
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.
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.
True or false: Networks can be easily put together without much planning.
True or false: Networks can be easily put together without much planning.
The Data Link layer is subdivided into two sections: Media Access Control (MAC) and Logical Link Control (LLC).
The Data Link layer is subdivided into two sections: Media Access Control (MAC) and Logical Link Control (LLC).
The Physical layer describes how the data gets transmitted over a communication medium.
The Physical layer describes how the data gets transmitted over a communication medium.
The IEEE 802 standards were designed primarily for enhancements to the bottom three layers of the OSI model.
The IEEE 802 standards were designed primarily for enhancements to the bottom three layers of the OSI model.
The Logical Link Control sublayer manages data link communications.
The Logical Link Control sublayer manages data link communications.
CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection.
CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection.
CSMA/CA tries to fix collisions after they happen.
CSMA/CA tries to fix collisions after they happen.
True or false: Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
True or false: Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
True or false: Centralized administration and control are lacking in peer-to-peer networks.
True or false: Centralized administration and control are lacking in peer-to-peer networks.
True or false: Peer-to-peer networks are recommended for small companies expecting future growth.
True or false: Peer-to-peer networks are recommended for small companies expecting future growth.
True or false: Client-server networks are better for large networks that require a secure environment and centralized control.
True or false: Client-server networks are better for large networks that require a secure environment and centralized control.
True or false: Server-based networks offer better security than peer-to-peer networks.
True or false: Server-based networks offer better security than peer-to-peer networks.
True or false: Server-based networks are suitable for growing companies, large environments, and centralized security needs.
True or false: Server-based networks are suitable for growing companies, large environments, and centralized security needs.
True or false: There are four primary network topologies: Bus, Star, Ring, and Mesh.
True or false: There are four primary network topologies: Bus, Star, Ring, and Mesh.
True or false: The Mesh topology has the best fault tolerance.
True or false: The Mesh topology has the best fault tolerance.
True or false: The Star topology is more expensive than the Bus topology.
True or false: The Star topology is more expensive than the Bus topology.
True or false: The Ring topology is difficult to reconfigure.
True or false: The Ring topology is difficult to reconfigure.
True or false: The Hybrid topology is less complex than the Mesh topology.
True or false: The Hybrid topology is less complex than the Mesh topology.
True or false: The Bus topology is the most commonly installed network topology.
True or false: The Bus topology is the most commonly installed network topology.
True or false: The mesh topology becomes inefficient with five or more entities due to the high number of connections required?
True or false: The mesh topology becomes inefficient with five or more entities due to the high number of connections required?
True or false: The hybrid topology is a mix of other topologies and is commonly seen in modern networks?
True or false: The hybrid topology is a mix of other topologies and is commonly seen in modern networks?
True or false: Networks need a common language called a protocol for computers to communicate with each other?
True or false: Networks need a common language called a protocol for computers to communicate with each other?
True or false: The OSI model was published by the ISO in 1984 to describe network protocols?
True or false: The OSI model was published by the ISO in 1984 to describe network protocols?
True or false: The OSI model consists of seven layers, each adding information to the data being transmitted?
True or false: The OSI model consists of seven layers, each adding information to the data being transmitted?
True or false: The higher layers of the OSI model pass data through the lower layers, adding headers and trailers?
True or false: The higher layers of the OSI model pass data through the lower layers, adding headers and trailers?
What are the two sections of the Data Link layer?
What are the two sections of the Data Link layer?
What does the Physical layer describe?
What does the Physical layer describe?
What does the IEEE 802 standards specify?
What does the IEEE 802 standards specify?
What are the two sublayers of the Data Link layer in the IEEE 802 standard?
What are the two sublayers of the Data Link layer in the IEEE 802 standard?
What is the purpose of the Logical Link Control sublayer?
What is the purpose of the Logical Link Control sublayer?
What is the purpose of the Media Access Control sublayer?
What is the purpose of the Media Access Control sublayer?
What is a network operating system (NOS) and where does it run?
What is a network operating system (NOS) and where does it run?
What is the purpose of a protocol in computer networks?
What is the purpose of a protocol in computer networks?
What are the two resource access models in a network?
What are the two resource access models in a network?
When was the OSI model published and what was its purpose?
When was the OSI model published and what was its purpose?
What factors should be considered when deciding the resource access model?
What factors should be considered when deciding the resource access model?
How many layers does the OSI model consist of?
How many layers does the OSI model consist of?
Name three examples of Network Operating Systems (NOS).
Name three examples of Network Operating Systems (NOS).
What is the role of the transport layer in the OSI model?
What is the role of the transport layer in the OSI model?
What are the two major components of a typical network?
What are the two major components of a typical network?
What is the function of the data link layer in the OSI model?
What is the function of the data link layer in the OSI model?
What are the two major components of a typical network?
What are the two major components of a typical network?
Which topology becomes inefficient with five or more entities?
Which topology becomes inefficient with five or more entities?
What are the advantages and disadvantages of the Bus topology?
What are the advantages and disadvantages of the Bus topology?
What are the advantages and disadvantages of the Star topology?
What are the advantages and disadvantages of the Star topology?
What are the advantages and disadvantages of the Ring topology?
What are the advantages and disadvantages of the Ring topology?
What are the advantages and disadvantages of the Mesh topology?
What are the advantages and disadvantages of the Mesh topology?
What are the advantages and disadvantages of the Hybrid topology?
What are the advantages and disadvantages of the Hybrid topology?
What is the primary advantage of the Star topology over the Bus topology?
What is the primary advantage of the Star topology over the Bus topology?
What are the advantages and disadvantages of peer-to-peer networks?
What are the advantages and disadvantages of peer-to-peer networks?
What are the advantages and disadvantages of client-server networks?
What are the advantages and disadvantages of client-server networks?
What is the difference between peer-to-peer and client-server networks?
What is the difference between peer-to-peer and client-server networks?
Why are peer-to-peer networks not recommended for small companies expecting future growth?
Why are peer-to-peer networks not recommended for small companies expecting future growth?
Why are client-server networks better for large networks?
Why are client-server networks better for large networks?
What type of networks are suitable for growing companies, large environments, and centralized security needs?
What type of networks are suitable for growing companies, large environments, and centralized security needs?
CSMA/CD stands for Carrier Sense Multiple Access with ______.
CSMA/CD stands for Carrier Sense Multiple Access with ______.
The ______ topology becomes inefficient with five or more entities due to the high number of connections required.
The ______ topology becomes inefficient with five or more entities due to the high number of connections required.
The ______ topology is difficult to reconfigure.
The ______ topology is difficult to reconfigure.
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.
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.
The ______ Link Control sublayer manages data link communications.
The ______ Link Control sublayer manages data link communications.
Another very well-known standard is 802.3 CSMA/CD. You might know it by its more popular name, ______.
Another very well-known standard is 802.3 CSMA/CD. You might know it by its more popular name, ______.
The OSI model was published by the ISO in ______ to describe network protocols.
The OSI model was published by the ISO in ______ to describe network protocols.
The bottom layer sends the information out on the ______ or wirelessly.
The bottom layer sends the information out on the ______ or wirelessly.
The mesh topology becomes inefficient with ______ or more entities due to the high number of connections required.
The mesh topology becomes inefficient with ______ or more entities due to the high number of connections required.
The higher layers of the OSI model pass data through the lower layers, adding ______ and trailers.
The higher layers of the OSI model pass data through the lower layers, adding ______ and trailers.
The OSI model layers include the ______ layer, presentation layer, session layer, transport layer, network layer, and data link layer.
The OSI model layers include the ______ layer, presentation layer, session layer, transport layer, network layer, and data link layer.
The data link layer arranges data into frames and includes control information and the ______ address for each NIC.
The data link layer arranges data into frames and includes control information and the ______ address for each NIC.
______ 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.
______ 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.
______ 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.
______ 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.
______ topology connects each computer to two other computers in a circle, and it is difficult to add new computers and has low fault tolerance.
______ topology connects each computer to two other computers in a circle, and it is difficult to add new computers and has low fault tolerance.
______ 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.
______ 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.
The ______ topology combines the best features of each topology used, but it is complex (less so than Mesh).
The ______ topology combines the best features of each topology used, but it is complex (less so than Mesh).
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.
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.
Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
Peer-to-peer networks are suitable for small, simple, and inexpensive networks.
What is the primary advantage of the Star topology over the Bus topology?
What is the primary advantage of the Star topology over the Bus topology?
What are the advantages and disadvantages of the Bus topology?
What are the advantages and disadvantages of the Bus topology?
What is the purpose of the Media Access Control sublayer?
What is the purpose of the Media Access Control sublayer?
What is a network operating system (NOS) and where does it run?
What is a network operating system (NOS) and where does it run?
What are the advantages and disadvantages of the Hybrid topology?
What are the advantages and disadvantages of the Hybrid topology?
Peer-to-peer networks are also referred to as ______
Peer-to-peer networks are also referred to as ______
Each computer in a peer-to-peer network acts as both a ______ and a ______
Each computer in a peer-to-peer network acts as both a ______ and a ______
The type of resource model chosen depends on the network's ______.
The type of resource model chosen depends on the network's ______.
Peer-to-peer networks are suitable for ______, ______, and inexpensive networks.
Peer-to-peer networks are suitable for ______, ______, and inexpensive networks.
Peer-to-peer networks are also referred to as ______.
Peer-to-peer networks are also referred to as ______.
Each computer in a peer-to-peer network acts as both a ______ and a ______.
Each computer in a peer-to-peer network acts as both a ______ and a ______.
Centralized administration and control are lacking in peer-to-peer networks, making network management ______ and security ______.
Centralized administration and control are lacking in peer-to-peer networks, making network management ______ and security ______.
Server-based networks use dedicated, centralized servers for administrative functions and ______ sharing.
Server-based networks use dedicated, centralized servers for administrative functions and ______ sharing.
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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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