Network+ Chapter 16 Flashcards Preview

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Flashcards in Network+ Chapter 16 Deck (25):
1

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.

2

What is a PSTN?

Public Switched Telephone Network-the first successful network able to establish voice communications.

3

________is equipment that's owned by the service provider but located on the subscriber's (your) property.
p. 577

Customer Premises Equipment

4

___________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

5

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.

6

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

7

____________________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

8

what are 3 types of POTs ?

p 579

PSTN via ISDN, DSL,

9

What are Two key concepts to keep in mind about PSTN are _____________
p 579

They are public and switched.

10

Define public PSTN?
pg 579

anyone can lease the use of the network without being required to run any cabling for a small fee

11

What are 3 types o Wan connection types discussed on page 580-581?

Dedicated (Leased) Lines
Circuit Switching
Packet Switching

12

Dedicated leased lines are usually referred to as________? pg 580

point-to-point or dedicated connections.

13

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

14

How nay pairs of copy wires are in a T1 connection?
pg 583

2

15

______________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

16

______________also called fiber to the premises, is a new option for connecting homes and business to the Internet.

p. 586

Passive Optical Network

17

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.

18

________________is an artificial satellite stationed in space for telecommunications purposes.

p. 587

communications satellite

19

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

20

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)

21

How many customers can a Distribution Network support? pg 591

100-2000

22

VDSL2 systems utilize bandwidths of up to________ to provide data rates exceeding________ simultaneously in both the upstream and downstream directions.
p. 590

30MHz
100Mbps

23

what are the down links and up links if Wi-Max? pg 594

down- 5-6 Mbps
up- 2-3 Mbps

24

What are the down and up links of LTE? pg 594

Down - 7-12 Mbps
Up- 3-5 Mbps

25

What are the 5 PPP encapsulation options offer?

Authentication
Compression
Error Detection
Multilink
PPP Call Back