Module 1 / Unit 1 Topologies and the OSI Model Flashcards
On completion of this unit, you will be able to: □ Describe the key features and components of networks. □ Understand what is meant by a topology and identify the key physical and logical network topologies, such as star, mesh, and bus. □ Describe the functions of the layers of the OSI Model.
What term is used to describe a topology in which two nodes share a single link?
Point-to-point.
What is characteristic of the bandwidth of a bus topology?
The bandwidth is shared between all nodes connected to the bus
What type of device is used to implement a star topology?
Hub / switch / router.
You need operations to continue if one link fails. How many links does it take to connect three sites?
Three.
In which sub-layer of the OSI model do network adapter cards operate?
MAC (a Data Link sublayer).
Which component is responsible for translating the computer’s digital signals into electrical or optical signals that travel on network cable?
Transceiver
True or false? The Session Layer is responsible for passing data to the Network Layer at the lower bound and the Presentation Layer at the upper bound
False. The session layer is between the transport and presentation layers.
Which OSI layer handles the concept of logical addressing?
Network layer.
At which OSI layer is the concept of a port number introduced?
Transport layer.
Which two OSI layers define how multiple computers can simultaneously use the network media without interfering with each other?
Physical and data link.
