1.
Layer of the OSI model where users communicate with the computer
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2.
This layer acts as an interface between the application program and the next layer down.
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3.
Layer responsible for identifying and establishing the availability of the intended communication partner and determining whether sufficient resources for the intended communication exist.
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4.
This layer gets its name from its purpose: It presents data to the Application layer and is responsible for data translation and code formatting.
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5.
This layer is essentially a translator and provides coding and conversion functions.
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6.
The OSI has protocol standards that define how standard data should be formatted. Tasks like data compression, decompression, encryption, and decryption are associated with this layer.
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7.
This layer is responsible for setting up, managing, and then tearing down sessions between Presentation-layer entities.
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8.
This layer also provides dialogue control between devices, or nodes.
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9.
This layer coordinates communication between systems and serves to organize their communication by offering three different modes: simplex, half duplex, and full duplex.
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10.
This layer basically keeps applications' data separate from other applications' data.
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11.
This layer segments and reassembles data into a data stream.
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12.
This layer is responsible for providing mechanisms for multiplexing upper-layer applications, establishing sessions, and tearing down virtual circuits.
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13.
This layer hides details of any network-dependent information from the higher layers by providing transparent data transfer.
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14.
TCP and UDP work at this layer.
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15.
This layer can be connectionless, or it can be connection-oriented.
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16.
It's important that you understand the connection-oriented portion of the Transport layer. Before a transmitting host starts to send segments down the model, the sender's TCP process contacts the destination's TCP process to establish a connection. What is created is known as a__________ _________.
17.
______ _________ provides a means for the receiver to govern the amount of data sent by the sender. It prevents a sending host on one side of the connection from overflowing the buffers in the receiving host — an event that can result in lost data.
18.
Data integrity is ensured at this layer by maintaining flow control and by allowing users to request reliable data transport between systems.
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19.
A service is considered __________ ___________ if it has the following characteristics:
A virtual circuit is set up (such as a three-way handshake).
It uses sequencing.
It uses acknowledgments.
It uses flow control.
20.
The quantity of data segments (measured in bytes) that the transmitting machine is allowed to send without receiving an acknowledgment for them is called a ________.
21.
This layer manages device addressing
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22.
This layer tracks the location of devices on the network
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23.
This layer determines the best way to move data.
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24.
This layer must transport traffic between devices that aren't locally attached.
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25.
Routers are specified at this layer and providing the routing services within an internetwork.
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G.