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Google IT Cert: Course 2 > Bits & Bytes: Week 5, I-III - Dial-Up and Broadband > Flashcards

Bits & Bytes: Week 5, I-III - Dial-Up and Broadband Flashcards

1
Q

ACRONYM:

POTS

A

Plain Old Telephone Service

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2
Q

ACRONYM:

PSTN

A

Public Switched Telephone Network

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3
Q

What does modem stand for?

A

Modular/Demodulator

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4
Q

What is the term for a measurement of how many bits can be passed across a phoneline in one second?

A

the Baud Rate

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5
Q

What device takes computer data and translates it into audible wavelengths to be transmitted via POTS?

A

a Modem

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6
Q

In a broad sense, what is the definition of broadband?

A

Any connectivity technology that is not dial-up internet

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7
Q

What is the term for a technology that allowed multiple telephone calls to be transmitted over a single link?

A

T-Carrier Technologies

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8
Q

What are the four most common broadband technologies used today?

A

T-Carrier Technology, Digital Subscriber Lines, Cable broadband, and fiber connections

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9
Q

ACRONYM:

DSL

A

Digital Subscriber Lines

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10
Q

ACRONYM:

T1

A

Transmission System 1

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11
Q

What is a term for any twisted pair copper connection capable of speeds of 1.544 megabits per second?

A

T1

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12
Q

How many T1 lines are in a T3 line?

A

28

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13
Q

How fast is a T1 connection?

A

1.544 megabits per second

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14
Q

How fast is a T3 connection?

A

44.736 megabits

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15
Q

What type of technology replaced T1 for inter-ISP communications?

A

Fiber technology

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16
Q

ACRONYM:

DSL

A

Digital Subscriber Line

17
Q

Why doesn’t DSL interfere with regular telephone calls?

A

DSL operates on a different frequency than traditional voice-to-voice phone calls

18
Q

ACRONYM:

DSLAM

A

Digital Subscriber Line Access Multiplexers

19
Q

ACRONYM:

ADSL

A

Asymmetric Digital Subscriber Line

20
Q

ACRONYM:

SDSL

A

Symmetric Digital Subscriber Line

21
Q

Which type of connection generally downloads at a higher speed than it uploads?

A

Asymmetric Digital Subscriber Lines

22
Q

What’s the difference between SDSL and ADSL?

A

SDSL downloads and uploads data at the same rate whereas ADSL generally downloads data more quickly than it uploads data.

23
Q

How fast can an SDSL connection move data?

A

1.544 megabits per second

24
Q

What caused the boom of cable television in 1984? Why?

A

The Cable Communications Policy Act deregulated the cable television business.

25
Q

Why doesn’t a cable broadband connection interfere with cable television being sent over the same line?

A

Broadband internet connections are sent over a different frequency than cable television

26
Q

What type of cable does cable television and broadband use?

A

Coaxial Cables

27
Q

Which broadband model cannot guarantee a specific amount of bandwidth to its users?

A

Shared bandwidth technology

28
Q

From where does an internet connection in a home or business originate when using DSL or dial-up internet?

A

The telephone company’s Central Office (CO)

29
Q

ACRONYM:

CMTS

A

Cable Modem Termination System

30
Q

What is the term for a device that sits at the edge of a consumer’s network and connects them to the CMTS?

A

Cable modem

31
Q

What connects large numbers of different cable connections to an ISPs core network?

A

The Cable Modem Termination System

32
Q

How far, generally, can a copper wire carry a signal before it degrades, requiring a repeater?

A

A few thousand feet

33
Q

ACRONYMS:

FTTX, FTTN, FTTB, FTTH

A

Fiber to the X, Neighborhood, Building, Home

34
Q

ACRONYM:

ONT

A

Optical Network Terminator

35
Q

What is the demarcation point for fiber technologies?

A

the Optical Network Terminator

36
Q

Where is fiber technology translated into more traditional, twisted copper cable protocols?

A

at the Optical Network Terminator

Google IT Cert: Course 2 (14 decks)

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