Flashcards in Network+ Chapter 16 Deck (25):
What is a WAN ?
Its a telecommunications network or computer network that extends over a large geographical distance. Wide area networks often are established with leased telecommunication circuits.
What is a PSTN?
Public Switched Telephone Network-the first successful network able to establish voice communications.
________is equipment that's owned by the service provider but located on the subscriber's (your) property.
Customer Premises Equipment
___________is a Layer 1 device that connects the serial ports on your router to the provider's network and connects directly to the demarcation point (demarc) or location.
CSU/ DSUChannel service unit/ data service unit
Define a copper line repeater?
A copper line driver or repeater allows for a demarc extension length of up to 5,000 feet from the telephone company's demarc.
A cable consisting of a pair of copper wires called the ___________ connects the demarc to the closest switching office, known as a _________?
____________________is a trunk line inside a WAN provider's network. This network is a collection of switches and facilities owned by the ISP.
what are 3 types of POTs ?
PSTN via ISDN, DSL,
What are Two key concepts to keep in mind about PSTN are _____________
They are public and switched.
Define public PSTN?
anyone can lease the use of the network without being required to run any cabling for a small fee
What are 3 types o Wan connection types discussed on page 580-581?
Dedicated (Leased) Lines
Dedicated leased lines are usually referred to as________? pg 580
point-to-point or dedicated connections.
What are the Max Speeds of T1,T1c,T2,T3,T4 connections?
T1 1.544 Mbps
T1c 3.152 Mbps
T3 44.736 Mbps
T4 274.176 Mbps
How nay pairs of copy wires are in a T1 connection?
______________is a technology that multiplexes several optical carriers on a single optical fiber by using different wavelengths. Remember, fiber-optic signals are light, so using different wavelengths of the light spectrum is somewhat like using different frequencies in a radio wave.
Wavelength Division Multiplexing
______________also called fiber to the premises, is a new option for connecting homes and business to the Internet.
Passive Optical Network
What is a Microwave radio relay?
Its a technology for transmitting digital and sometimes even analog signals between two locations on a line-of-sight radio path through the atmosphere.
________________is an artificial satellite stationed in space for telecommunications purposes.
What are 3 types of communications satellites discussed in this chapter? pg 587
Low-polar and non-polar Earth orbits from which the satellite can first boost communications signals and then send them back to earth
What are four types of DSL implementations?
High Bit-Rate Digital Subscriber Line (HDSL)
Symmetric Digital Subscriber Line (SDSL)
Very High Bit-Rate Digital Subscriber Line (VDSL)
Asymmetric digital subscriber line (ADSL)
How many customers can a Distribution Network support? pg 591
VDSL2 systems utilize bandwidths of up to________ to provide data rates exceeding________ simultaneously in both the upstream and downstream directions.
what are the down links and up links if Wi-Max? pg 594
down- 5-6 Mbps
up- 2-3 Mbps
What are the down and up links of LTE? pg 594
Down - 7-12 Mbps
Up- 3-5 Mbps