Computer Networking Exam 1 Q&A
Internet - =A computer network that interconnects hundreds of millions of computing devices
throughout the world; an infrastructure that provides services to applications
Hosts or End Systems - =A device that has access to the Internet
Communication Links and Packet Switches - =Used to connect end systems together
Transmission Rate - =How fast a link can transmit data, measured in bits/second
Packets - =Segments of data sent from one end system to another
Routers and Link-Layer Switches - =Forward packets toward their ultimate destinations
Route or Path - =The sequence of communication links and packet switches traversed by a packed from
the sending end system to the receiving end system
Internet Service Providers - =A network of packet switches and communication links that provides a
variety of types of network access to end systems
Protocol - =Defines the format and the order of messages exchanged between two or more
communicating entities, as well as the actions taken on the transmission and/or receipt of a message or
other event
Transmission Control Protocol and Internet Protocol - =The most important protocols in the Internet
Internet Standards - =Specify what each protocol does
Internet Engineering Task Force - =Developer of Internet standards
, Request for Comments - =IETF documents that outline the standards for each protocol
Distributed Applications - =Applications that involve multiple end systems exchanging data with each
other; only run on end systems, not in the packet switches
Application Programming Interface - =Specifies how a program running on one end system asks the
Internet infrastructure to deliver data to a specific destination program running on another end system
The Network Edge - =The collection of end systems (including servers) that are attached to the Internet
Clients - =An end system that initiates a connection
Servers - =An end system that waits for a connection
Data Center - =A large collection of servers
Access Network - =The network that physically connects and end system to the first router on a path
from the end system to any other end system
Digital Subscriber Line - =Uses the existing telephone line to exchange data with a DSLAM located in the
telco's local central office
Central Office - =CO
Digital Subscriber Line Access Multiplexer - =DSLAM
Asymmetric Access - =Access networks which provide different downstream and upstream rates
Cable Internet Access - =Uses the existing cable line to exchange data with a CMTS at the cable head
end; shared Internet medium
Internet - =A computer network that interconnects hundreds of millions of computing devices
throughout the world; an infrastructure that provides services to applications
Hosts or End Systems - =A device that has access to the Internet
Communication Links and Packet Switches - =Used to connect end systems together
Transmission Rate - =How fast a link can transmit data, measured in bits/second
Packets - =Segments of data sent from one end system to another
Routers and Link-Layer Switches - =Forward packets toward their ultimate destinations
Route or Path - =The sequence of communication links and packet switches traversed by a packed from
the sending end system to the receiving end system
Internet Service Providers - =A network of packet switches and communication links that provides a
variety of types of network access to end systems
Protocol - =Defines the format and the order of messages exchanged between two or more
communicating entities, as well as the actions taken on the transmission and/or receipt of a message or
other event
Transmission Control Protocol and Internet Protocol - =The most important protocols in the Internet
Internet Standards - =Specify what each protocol does
Internet Engineering Task Force - =Developer of Internet standards
, Request for Comments - =IETF documents that outline the standards for each protocol
Distributed Applications - =Applications that involve multiple end systems exchanging data with each
other; only run on end systems, not in the packet switches
Application Programming Interface - =Specifies how a program running on one end system asks the
Internet infrastructure to deliver data to a specific destination program running on another end system
The Network Edge - =The collection of end systems (including servers) that are attached to the Internet
Clients - =An end system that initiates a connection
Servers - =An end system that waits for a connection
Data Center - =A large collection of servers
Access Network - =The network that physically connects and end system to the first router on a path
from the end system to any other end system
Digital Subscriber Line - =Uses the existing telephone line to exchange data with a DSLAM located in the
telco's local central office
Central Office - =CO
Digital Subscriber Line Access Multiplexer - =DSLAM
Asymmetric Access - =Access networks which provide different downstream and upstream rates
Cable Internet Access - =Uses the existing cable line to exchange data with a CMTS at the cable head
end; shared Internet medium
