“Understanding Packet Switching and Multiaccess WANs
Keyterms
Wildcards
100
Telephones, and the telephone systems created ........ around the world starting in the late 1800s, revolutionized communications
What is telcos
100
Routers use to forward IP packets from one router to the other
What are serial leased lines
100
This form of switching was geared towards saving costs because it clients could install with less cable over long distances and therefore give better prices to their customers in the beginning but was later replaced....what for of switching was this?
What is packet switching
100
The customer basically leases this digital circuit on a monthly basis, so the telco calls these permanent circuits.....
What are either a leased circuit or a leased line
100
When connecting from a PC to an ISP you must use a.......
What is a modem
200
Another name for WAN and known by many is......
What is SP (Service Provider)
200
What layer of the OSI model would Leased Line WAN Links fall under.....
What is Layer 2
200
Frame Relay networks often use the......... leased lines as the physical access links
What is T carrier
200
These are circuits created when the customer dials a number, and the telco sets up a new circuit to some destination.....
What is switched circuit
200
Telcos actually stands for this old name.....
What is telephone company
300
What physical hardware devices should be used by modern telco customers to connect to one WANs in order to send IP packets over another WAN
What is/are routers
300
Every leased line physically requires (CSU/DSU) on each end...what does CSU and DSU stand for
What is a channel service unit/data service unit
300
This is used to define an address but not the control field
What is the PPP (Point-To-Point-Protocol)
300
This type of circuit exists between two endpoints, and remains, without switching, because the telco creates the circuit to be there permanently
What is a dedicated circuit
300
Most people refer to switched circuits by their more common....
What is dialup
400
This telco digital circuit offered more flexibility, faster bit rates and streamlined business operations...
What is leased circuit or leased lined
400
This process solved this issues by finding a way to move the bits from lines that run at a slower speed onto the link that runs at the higher speed
What is TMD (time-division multiplexing)
400
This is a network that allows any device connected to the network to communicate with any other device
What is a Frame Relay
400
The companies of the Bell System in the United States invented and used the first three leased lines...
What are:
-DS0
-DS1
-DS3
400
...........can connect two routers over very long distances amd physically the lines use 2-pair copper cablings that runs into the customer building on each end of the link
What is leased lines
500
Telco installed a 2 wire in each home resulting in a voice call to and an analog electrical circuit to exist between the two phones called a local loop. There was another area where equipment was placed, where was that location.....
What is the other end connected equipment sitting in a nearby telco office called the central office (CO).
500
Leased-line data-link protocols do not have to negotiate which router gets to send next, because they allow which type of duplex......
What is full
500
PPP was designed to be used by these type of networks and the multiprotocol routers used to create networks that and supported other networking protocols.
What is TCP/IP
500
The Bell System named the entire set of products and services the...... this system used DS0, DS1, and DS3 lines both to customer sites and between COs
What is T-carrier system
500
The Bell System named the entire set of products and services the T-carrier system; the system used DS0, DS1, and DS3 lines both to customer sites and between COs