Network+ Chapter 16 Flashcards
What is a WAN ?
pg 577
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.
p. 577
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.
pg 577
CSU/ DSUChannel service unit/ data service unit
Define a copper line repeater?
p. 578
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 _________?
p. 579
Local Loop
Central office
____________________is a trunk line inside a WAN provider’s network. This network is a collection of switches and facilities owned by the ISP.
p. 579
toll network
what are 3 types of POTs ?
p 579
PSTN via ISDN, DSL,
What are Two key concepts to keep in mind about PSTN are _____________
p 579
They are public and switched.
Define public PSTN?
pg 579
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
Circuit Switching
Packet Switching
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?
pg 583
T1 1.544 Mbps T1c 3.152 Mbps T2 6.321Mbps T3 44.736 Mbps T4 274.176 Mbps
How nay pairs of copy wires are in a T1 connection?
pg 583
2
______________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.
p. 585
Wavelength Division Multiplexing
______________also called fiber to the premises, is a new option for connecting homes and business to the Internet.
p. 586
Passive Optical Network
What is a Microwave radio relay?
pp. 586-587
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.
p. 587
communications satellite
What are 3 types of communications satellites discussed in this chapter? pg 587
Geostationary orbits
Molniya orbits
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?
pg 590
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
100-2000
VDSL2 systems utilize bandwidths of up to________ to provide data rates exceeding________ simultaneously in both the upstream and downstream directions.
p. 590
30MHz
100Mbps
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
What are the 5 PPP encapsulation options offer?
Authentication Compression Error Detection Multilink PPP Call Back
