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Computer Text Book > Chapt 11 > Flashcards

Chapt 11 Flashcards

1
Q

The fastest type of Internet service is based on ________ cabling

A

Fiber optic

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2
Q

_______ transmits signals with light rather than with electrical signals

A

Fiber optic cable

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3
Q

Fiber optic cable comes in two major types:

A

Single and multi mode

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4
Q

______ Has a thin core (between 8 and 10 microns) designed to carry a signals to cable TV and telephone companies.

A

Single mode

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5
Q

Single mode carries a single light ray how far?

A

long distances (up to 60km or further).

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6
Q

Multi mode carries multiple light rays how far?

A

(up to 10km).

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7
Q

Multi mode optical cable is used for ______ type of networks

A

Typical uses include local and metropolitan area networks (LANs and MANs).

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8
Q

(FTTP) and (FTTH). Has speeds up to ?

A

fiber to the premises (FTTP) or fiber to the home (FTTH)

1Gbps

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9
Q

ONT

A

optical network terminal (ONT).

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10
Q

ONT does what?

A

converts the light signals carried by the fiber optic cable into an Ethernet networking signal.

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11
Q

PON

A

passive optical networking.

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12
Q

Cable Internet uses the same _____ coaxial cable as cable TV

A

RG6

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13
Q

Typical cable Internet speeds range from ?

A

10Mbps up to 100Mbps

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14
Q

some operators are now offering ____ speeds by using FTTH fiber optic service.

A

500Mbps and 1000Mbps (1Gbps)

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15
Q

DOCSIS

A

Data Over Cable Service Interface Specification (DOCSIS)

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16
Q

ISPs that support DOCSIS 3.0 modems limit speeds to ?

A

500Mbps or less

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17
Q

Cable Internet providers that offer ______ speed services require modems that support DOCSIS 3.1

A

1Gbps-class

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18
Q

_____ speed test checks how quickly a remote server responds

A

Ping

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19
Q

With ping test, _________ numbers are better for online gaming and video chatting

A

Smaller

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20
Q

DSL

A

Digital subscriber line (DSL)

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21
Q

devices called DSL _________ are attached between telephones and telephony devices such as answering machines, voicemail, and fax machines to prevent interference with DSL signals

A

Microfilters

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22
Q

Typical traditional DSL speeds range from ________ to _______ For download?

A

768Kbps - 6Mbps

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23
Q

Typical traditional DSL speeds range from ________ to _______ For upload?

A

384Kbps to 768Kbps

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24
Q

ADSL2+ (up to _____Mbps/____Mbps) speeds?

A

(up to 24Mbps/3.3Mbps)

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25
Q

VDSL (very high bit rate DSL—up to _____Mbps/_____Mbps)

A

(500Mbps/100Mbps)

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26
Q

Radio frequency wireless is also known as ?

A

fixed wireless service

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27
Q

WISP

A

fixed wireless ISP (WISP)

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28
Q

_________ service isn’t recommended as your only connection because it is slower than most other services (average download speed for U.S. carriers in early 2018 is 12–36Mbps) with monthly data caps at 10–15GB per line.

29
Q

Max download speed for Fiber optic

30
Q

Max download speed for cable?

31
Q

Max download speed for DSL

A

6Mbps - 500Mbps

32
Q

Max download speed for Fixed wireless

A

768Kbps–1Gbps^

33
Q

Max download speed for Satellite?

A

25–50Mbps

34
Q

Max download speed for cellular?

A

Up to 36Mbps

35
Q

Fiber optic SC uses ______ connectors

A

SC: Uses square connectors

36
Q

Fiber optic LC uses ______ connectors

A

LC: Uses square connectors

37
Q

Fiber optic ST uses ______ connectors

A

ST: Uses round connectors

38
Q

Fiber optic ST means?

A

Straight tip

39
Q

SC fiber optic cable means?

A

SC = stick and click

40
Q

Fiber optic LC means?

A

Lucent Connector, sometimes also known as “little connector”

41
Q

A fiber connection from the ISP that goes directly to a home or business is referred to as ? Or ?

A

fiber to the premises (FTTP) or fiber to the home (FTTH)

42
Q

DOCSIS 3.0 speed

A

500Mbps or less.

43
Q

DOCSIS 3.1 speed?

A

1Gbps-class services require modems that support DOCSIS 3.1

44
Q

Upstream refers to data being sent from?

A

Upstream refers to data, page requests, email, and so on being sent from your computer or network to the Internet.

45
Q

Downstream refers to data ?

A

Downstream refers to any information being received from the Internet

46
Q

Sending data upstream is called?

47
Q

Receiving data is called ?

A

downloading.

48
Q

A ________ is a limit on the amount of data you can download during a billing period (usually 30 days)

49
Q

You need to specify an Internet connection that provides a speed of at least 100Mbps that cannot suffer electronic or weather-related interference. Which of the following best meets these requirements?

RF
Cable
Satellite
Fiber optic

A

Fiber optic

50
Q

A client is reporting problems with their Internet connection during rainy weather. They are not using satellite Internet. Which of the following connections are they most likely using?

Cable
DSL
RF
Cellular

51
Q

Fiber optic is being used as part of the distribution network for several types of Internet connections. Which of the following goes directly to the service location (home or business) to provide the fastest service?

FTTP
FTTN
FTTC
VDSL

52
Q

You are working at an electronics store and a customer asks for a cable modem that supports DOCSIS. Which of the following should be your response?

Offer the most expensive cable modem.
Ask which version of DOCSIS is needed.
Offer the least expensive cable modem.
Ask which cable service the customer has.

A

Ask which cable service the customer has.

53
Q

You are evaluating Internet service offers at a new address. One of the offers is for 6Mbps downstream/768Kbps upstream with free microfilters. Which of the following is being offered?

DSL
Cable
RF
Fiber optic

54
Q

You are evaluating Internet service offers at a new address. One of the offers is for 6Mbps downstream/768Kbps upstream with free microfilters. Which of the following is being offered?

DSL
Cable
RF
Fiber optic

55
Q

You are evaluating Internet service in a rural area of the USA. You can mount an antenna that faces south on your roof. Which of these services need this type of antenna positioning?

RF
Cellular
Satellite
DSL

56
Q

Your ISP is performing a site survey of your location. There are two towers that can provide a suitable signal for your location. Which of the following Internet services is being planned?

Cellular
Satellite
Cable
RF

57
Q

Your ISP offers you the option to buy or lease a modem that meets DOCSIS 3.0 standards. Which type of Internet service do you have?

DSL
Fiber optic
Cellular
Cable

58
Q

Your Internet service has become erratic since you connected the fax feature on your multifunction device. When you contact the ISP, the ISP asks you if you installed a microfilter on the new device. Which type of Internet service do you have?

Cable
Satellite
DSL
RF

59
Q

You are using your Wi-Fi-equipped laptop in the field and you need to send a report to your office. Wi-Fi service is not available in your location. However, your smartphone has a strong signal. Which feature do you need to enable on your smartphone to permit you to use its connection?

Channel bonding
Hotspot
Cellular
DSL

60
Q

You are evaluating Internet service for a new address. One of the proposals has line items for a site survey and a tower. Which of the following services is being offered?

Cellular
RF
Cable
Fiber optic

61
Q

Your telephone company is offering Internet service on the same line that you use for your fax machine with a top speed of 6Mbps. Which of the following service types is the company offering?

Cable
DSL
Satellite
RF

62
Q

A DOCSIS device used in your Internet service is obsolete. When you look for a replacement, which of the following are you shopping for?

DSL gateway
Cable modem
Satellite dish
Microfilter

A

Cable modem

63
Q

Your Internet service has been interrupted. You must contact your WISP for help. Which type of Internet service do you have?

Cable
RF
Cellular
Satellite

64
Q

Your client is watching TV during a heavy rainstorm. Because the picture cuts in and out, your client tries to use the Internet. However, the Internet signal also cuts in and out. The client’s Internet and TV services are bundled. Which of the following types of Internet is most likely in use?

RF
Cellular
Satellite
DSL

65
Q

Your client is excited to hear that fiber optic service is coming to their area. However, the maximum speed of the service is only 100Mbps. Which of the following best describes how fiber will be used?

Fiber optic runs to each home.
Fiber optic to a cabinet, then satellite to each home.
Fiber optic to a cabinet, then wireless to each home.
Fiber optic to a cabinet, then DSL or cable to each home.

A

Fiber optic to a cabinet, then DSL or cable to each home.

66
Q

Your client is moving from a home that has 6Mbps/768Kbps Internet service to a location about a block away. However, the provider advises your client that the service at the new location will only be 5Mbps/512Kbps. What type of Internet service does your client have?

Cable
DSL
Satellite
RF

67
Q

Your client is giving you a six-month-old DOCSIS 3.0 cable modem. The client is not changing Internet providers. Which of the following can explain what happened?

Client upgrading to 1Gbps cable service.
Client downgrading to slower cable service.
ISP switched to DSL modems.
ISP switched to satellite modems.

A

Client upgrading to 1Gbps cable service.

68
Q

You have moved to a different location where cable Internet service is not available. However, DSL is available. You own your cable modem. What can you do for equipment?

Connect a cable/DSL signal adapter to your cable modem.
Ask if your cable modem is compatible.
Assume your cable modem is compatible.
Lease a DSL modem.

A

Lease a DSL modem.

69
Q

You are looking over a home you are consider buying. A coaxial cable is connected to a modem that is next to a wireless router. There is no satellite dish or RF antenna. The current owner has a 60Mbps download speed. Which of the following Internet services is installed?

Cable
DSL
Cellular
Fiber optic

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