Chapter 2 Section 1 (2.1) Flashcards
Above and beyond their standards and protocols, networks have another dimension that describes how they function. This extra dimension is the ________ upon which the network is based.
networking model
Physical and logical components within the network work with each other based on standards and ________.
protocols
A networking model is akin to a(n):
architectural blueprint
Networking models are ________.
conceptual
Open standards are:
available for public comment, review, and varying implementation
Data communication networking models that have won wide acceptance include:
All of the above -
- OSI
- TCP/IP
The ________ model has become the model of choice throughout the world not only for wide area networks (WANs), but also for metropolitan area networks (MANs), local area networks (LANs) and backbone networks (BNs).
TCP/IP
A layered architecture is ________ to a data communication network model.
advantageous
The Open Systems Interconnection (OSI) model has ________ layer(s).
seven
What are the seven layers of the Open Systems Interconnection (OSI) model?
Physical, data link, network, transport, application, presentation, session
Three key services provided at the application layer include: (1) synchronizing the services between a user application and the protocol(s) it may use, (2) ensuring that necessary resources required by an application service are available, and (3) ________.
making sure that the correct communication protocol or service is available to the application
Some of the services provided at the application layer of the OSI model might include:
all of the above-
- remote file access and transfer
- e-printing services
Data have to be encoded into some ________ form so that the data can be used by computer systems.
binary
Which layer in an OSI data communication networking model ensures that data passed up to the application layer is in a format understandable to that layer?
presentation layer
Which layer in an OSI data communication networking model is responsible for establishing, maintaining, and terminating communications running between processes and applications across the network?
session layer
Which layer in an OSI data communication networking model ensures that the entire message sent from a sender to a receiver has been delivered?
transport layer
The ________ layer of the OSI data communication networking model takes unpackaged bit stream data arriving from the physical layer and packages the bits into units called frames and then attaches a physical address to each frame.
data link
The physical layer of the OSI data communication networking model is responsible for the ________ of bits, line configuration, physical topology, and the transmission mode.
synchronization
One governmental body that sets forth building regulations and safety standards is:
OSHA