Ch1

Question 1

On one computer, describes how two layers of a networking model work together, with the lower layer providing services to the higher-layer

Answer 1

Adjacent-layer interaction

Question 2

On a computer that receives data over a network, the process in which the device interprets the lower-layer headers, and, when finished with each header, removes the header, revealing the next-higher-layer PDU

Answer 2

De-encapsulation

Question 3

The placement of data from a higher layer protocol behind the header (and, in some cases, between a header and trailer) of the next lower-layer protocol.

Answer 3

Encapsulation

Question 4

A term referring to a datalink header and trailer, plus the data encapsulated between the header and trailer

Answer 4

Frame

Question 5

A generic term referring to any set of protocols and standards collected into a comprehensive grouping that, when followed by the devices in a network, allows all the devices to communicate

Answer 5

Networking model

Question 6

A logical grouping of bytes that includes the network layer header and encapsulated date, but specifically does not include any headers and trailers below the network layer

Answer 6

Packet

Question 7

An OSI term to refer generically to a grouping of information by a particular layer of the OSI model.

Answer 7

Protocol Data Unit (PDU)

Question 8

The communication between two networking devices for the purposes of the functions defined at a particular layer of a networking model, with that communication happening by using a header defined by that layer of the model. The two devices set values in the header, send the header and encapsulated data, when the receiving devices interpreting the the header to decide what action to take,

Answer 8

Same-layer interaction

Question 9

Term used to describe a Layer 4 header and its encapsulated data.

Answer 9

Segment