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IT Fundamentals + > Chapter 8 > Flashcards

Chapter 8 Flashcards

1
Q

Internet connections can be broadly broken into two categories:

A

dial-up

broadband

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2
Q

Dial-up:

A

uses modems that operate over regular phone lines

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3
Q

What is the biggest advantage to dial-up?

A

Its cheap and relatively easy to configure

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4
Q

Remote Access Service (RAS):

A

Microsoft’s server-side product that grants user’s dial-up access to their network

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5
Q

Reasons why dial-up might be the right solution?

A

the only hardware it requires is a modem and a phone card

you can use it wherever there is phone service, which is almost everywhere

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6
Q

Digital Subscriber Line (DSL):

A

utilizes existing phone lines and provides fairly reliable high-speed access

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7
Q

What do you need for DSL to work?

A

A DSL modem

a network card in the computer

a network cable to plug into the modem

a phone cord to plug the DSL modem into the phone outlet

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8
Q

Different Forms of DSL:

HDSL

A

High bit-rate DSL

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9
Q

Different Forms of DSL:

VDSL

A

Very High bit-rate DSL

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10
Q

Different Forms of DSL:

RADSL

A

Rate-Adaptive DSL

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11
Q

Different Forms of DSL:

SDSL

A

Symmetric DSL

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12
Q

Different Forms of DSL:

ADSL

A

Asymmetric DSL

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13
Q

Cable Modem:

A

Provides high-speed Internet access through your cable service

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14
Q

Fiber-to-the-Home (FTTH):

A

means that the cables are 100 percent fiber from their data centers to the home

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15
Q

Satellite Internet:

A

uses a satellite dish to receive data from an orbiting satellite and relay station that is connected to the Internet.

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16
Q

Delay/Latency:

A

occurs because of the length of time required to transmit the data and receive a response via the satellite

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17
Q

The two major cellular standards used around the world:

A

The Global System for Mobile Communications (GSM)

Code Division Multiple Access (CDMA)

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18
Q

Mobile Hotspot:

A

Many cellular providers offer network cards that allow your laptop computer or other noncellular device to connect to the cellular network from anywhere you can get a cellular signal

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19
Q

Radio Frequency RF broadband Internet:

A

is the least popular broadband connection in use today

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20
Q

Internet Maximum Download Speed; Description:

Dial-up

A

Up to 56 Kbps; A regular analog phone line

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21
Q

Internet Maximum Download Speed; Description:

DSL

A

Up to 30 Mbps; Shares existing phone wires with voice service

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22
Q

Internet Maximum Download Speed; Description:

Cable

A

Up to 50 Mbps; Inexpensive broadband Internet access method with wide availability

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23
Q

Internet Maximum Download Speed; Description:

Fiber-optic

A

Up to 1 Gbps; Incredibly fast and just as expensive

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24
Q

Internet Maximum Download Speed; Description:

Cellular

A

Up to 20 Mbps; supported by cellular providers

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25
Q

Internet Maximum Download Speed; Description:

Satellite

A

Up to 25 Mbps; For rural or remote areas without cabled broadband methods

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26
Q

Internet Maximum Download Speed; Description:

Radio frequency

A

Up to 20 Mbps; For rural areas where cable and DSL are not available.

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27
Q

What are the two wired network connection types?

A

Unshielded twisted pair (UTP)

Fiber optic

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28
Q

Ethernet:

A

specifies that only one computer can talk on the network at one time

29
Q

Twisted-Pair characteristics:

Transmission Rate

A

Cat 5e: 1 Gbps; Cat 6a: 10 Gbps

30
Q

Fiber-Optic characteristics:

A

100 Mbps to Gbps

31
Q

Twisted-Pair and Fiber-Optic characteristics:

Maximum length

A

100 meters; 25 miles

32
Q

Twisted-Pair and Fiber-Optic characteristics:

Flexibility

A

Very flexible; Fair

33
Q

Twisted-Pair and Fiber-Optic characteristics:

Ease of installation

A

Very easy; Difficult

34
Q

Twisted-Pair and Fiber-Optic characteristics:

Connector

A

RJ-45; Special (SC, ST, others)

35
Q

Twisted-Pair and Fiber-Optic characteristics:

Interference (security)

A

Susceptible; Not susceptible

36
Q

Twisted-Pair and Fiber-Optic characteristics:

Overall cost

A

Inexpensive; Expensive

37
Q

Twisted-Pair characteristics:

NIC cost

A

100 Mbps: $15-$40; 1 Gbps: $30 and up

38
Q

Fiber-Optic characteristics:

NIC cost

A

$100-$150; easily $600-$800 for server NICs

39
Q

Twisted-Pair characteristics:

10m cable cost

A

Cat 5/5e: $8-$12; Cat6/6a: $12-$15

40
Q

Fiber-Optic characteristics:

A

Depends on mode and connector type, but generally $20-$40

41
Q

Twisted-Pair characteristics:

8-port switch cost

A

100 Mbps: $30-$100; 1 Gbps: $70-$400

42
Q

Fiber-Optic characteristics:

A

$350 and up

43
Q

802.11 Frequency; Maximum Data Rate; Indoor Range; Outdoor Range:

a

A

5 GHz; 54 Mbps; 35 m; 120 m`

44
Q

802.11 Frequency; Maximum Data Rate; Indoor Range; Outdoor Range:

b

A

2.4 GHz; 11 Mbps; 40 m; 140 m

45
Q

802.11 Frequency; Maximum Data Rate; Indoor Range; Outdoor Range:

g

A

2.4 GHz; 54 Mbps; 40 m; 140 m

46
Q

802.11 Frequency; Maximum Data Rate; Indoor Range; Outdoor Range:

n

A

2.4/5 GHz; 600 Mbps; 70 m; 250 m

47
Q

802.11 Frequency; Maximum Data Rate; Indoor Range; Outdoor Range:

ac

A

5 GHz; 1300 Mbps; 35 m; 120 m

48
Q

Switch:

A

examines the header of the incoming data packet and forward it properly to the right port and only to that port.

49
Q

Hub:

A

passes along all network traffic

50
Q

Access Point:

A

any point that allow a user on to a network

51
Q

Router:

A

a highly intelligent network connectivity device that can connect multiple network types to each other

52
Q

Firewalls:

A

gatekeepers that can help thwart hackers and malware

53
Q

Protocol:

A

a set of rules that govern communications

54
Q

TCP/IP:

A

contains dozens of protocols working together to help computers communicate with one another

55
Q

Subnet mask:

A

computers use this to differentiate where the network ID ends and the host address begins

56
Q

DHCP servers:

A

can be configured to provide IP configuration information automatically to clients

57
Q

Private IP address ranges Subnet Mask; Number of Hosts

10.0.0.0-10.255.255.255

A

255.0.0.0; 16.7 million

58
Q

Private IP address ranges Subnet Mask; Number of Hosts

172.16.0.0-172.31.255.255

A

255.255.0.0; 1 million

59
Q

Private IP address ranges Subnet Mask; Number of Hosts

192.168.0.0

A

255.255.255.0; 65,536

60
Q

Cloud providers Free Storage; Premium Storage Costs:

Dropbox

A

2 GB; 1 TB at $99 per year

61
Q

Cloud providers Free Storage; Premium Storage Costs:

Apple iCloud

A

5 GB; 50 GB at $12, 200 GB at $36, or 2 TB at $120

62
Q

Cloud providers Free Storage; Premium Storage Costs:

Box

A

10 GB; 100 GB at $120

63
Q

Cloud providers Free Storage; Premium Storage Costs:

OneDrive

A

5 GB; 50 GB at $24, 1 TB at $70

64
Q

Cloud providers Free Storage; Premium Storage Costs:

Google Drive

A

15 GB; 100 GB at $24, 1 TB at $120; 10 GB at $1200

65
Q

Captive Portal:

A

a welcome page notifying the user of the conditions of the network, including which behaviors are permitted

66
Q

Temporal Key Integrity Protocols (TKIP):

A

uses a 128-bit dynamic per-packet key. It generates a new key for each packet sent

67
Q

Counter Mode CBC MAC Protocol (CCMP):

A

is a protocol used by WPA2 based on the AES security algorithm

68
Q

Network Address Translation (NAT):

A

allows you to use a private IP address internally but still get to the Internet

69
Q

Quality of Service (QoS):

A

a strategy that allows an administrator to control resources to maintain a certain service level

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