CHAPTER 1
One feature common to most computer software and data communications is
The use of layering to organize functionality
At which layer of the OSI model are you likely to see acknowledgments of data segments?
Transport
The header of a data packet contains all of the following except
User data
Layering is the practice of
arranging functionality of components so that lower layers support the services of upper layers
The novelty of the Telegraph was that
it allowed instantaneous long-distance communication over a wire
The novelty of multiplexing is that
it allows one wire to carry multiple signals simultaneously
The novelty of switching is that
it allows one wire to connect a user to multiple destinations
A unique feature of the Internet compared to landline phone and traditional cable TV networks is that
The Internet uses a common packet format to transfer data from any application
Packetization is the process of
Breaking down user data into small segments
The session layer in the OSI model is responsible for
Creating and terminating connections
The Data link layer in the TCP/ IP stack is responsible for
Error control
A technology defined at the Data link layer is
Ethernet
Businesses generate more network data than consumers. (T/F)
False
The TCP/ IP stack has ______ layers
Five
The Network layer in the TCP/ IP stack is responsible for
Identifying and locating the destination
The novelty of packet switching is that
It allows all users to be connected to all other users simultaneously
The contribution of the OSI model was that
It helped specify the concept of layers in data communication
The common packet format that can be transferred by any networking technology and that serves all applications is defined at the _______ layer
Network layer
Business Data Communications refers to the movement of data from
One computer application on a computer to another computer application on another computer
A protocol is a set of rules that
Permit information systems to exchange information with each other
The Transport layer in the TCP/ IP stack is responsible for
Segmentation and reassembly of packets
The OSI model has ___ layers.
Seven
The Physical layer in the TCP/ IP stack is responsible for
Signaling
The Application layer in the TCP/ IP stack is responsible for
Specifying end user needs
The presentation layer in the OSI model is responsible for
Syntax conversion from host-specific syntax for network transfer