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CompTIA A+ (Core 1) > Network Types > Flashcards

Network Types Flashcards

1
Q

LAN

A

Local Area Network

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2
Q

A __ network of computers and other components located relatively close together

A

LAN

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3
Q

What are the two types of LAN

A

Enterprise LAN

SOHO (Small Office Home Office) LAN

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4
Q

___ LAN will have a lot more devices. It could have thousands of computers and hundreds of printers

A

Enterprise

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5
Q

__ LAN may have a few computers and maybe one printer

A

SOHO

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6
Q 
The advantages of \_\_
are 
Resource sharing
-printers
-drivers
-internet
-software

Communication

  • easy
  • fast
  • time saving
A

LAN

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7
Q 
The disadvantages of \_\_ are 
security
-Unauthorized access can be granted if not setup correctly
Distance limitation
-generally limited to a single building
Setup costs
-hardware
-software
A

LAN

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8
Q

WAN

A

Wide Area Network

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9
Q

__ is used to transfer data across large distances.

commonly used to connect multiple LANs

A

WAN

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10
Q

The three different protocols of WAN are

A

PPP (point to point protocol)
Frame relay
ATM (Asynchronous transfer mode)

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11
Q

The main distinction between LAN and WAN is

A

the are of the size

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12
Q

LAN or WAN?
Area - single building or small geographic area
Ownership - owned by organization

A

LAN

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13
Q 
The advantages of \_\_ are
-Covers large geographical data
-centralized data (branch offices can access corporate data)
-Sharing
--software
--resources
High bandwidth
A

WAN

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14
Q 
The disadvantages of \_\_ are
Security
-the mix of different technologies can create a security gap
Setup costs
-routers
-switches
-security software
A

WAN

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15
Q

PAN

A

Personal Area Network

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16
Q

a __ is an interconnection of personal devices within range of an individual
-range is typically within 10 meters

A

PAN

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17
Q

What would be considered to be the primary benefit of Satellite Internet access?

A

Able to reach very remote areas

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18
Q

Which characteristics of cable Internet service might be considered to be disadvantages?

A

Volume of users

Living in a very remote area

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19
Q

The area where obstacles may interfere with Line-of-Sight wireless service is known as what zone?

A

Fresnel

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20
Q

What would be considered to be the primary benefit of implementing a WAN for your business?

A

Interconnecting all your locations to be able to share resources

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21
Q

Which type of entity would be most likely to implement a MAN?

A

A university

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22
Q

In which type of environment would you most likely encounter a SOHO LAN?

A

A small business

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23
Q

A wireless mesh network would most likely be configured for which type of access?

A

802.11

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24
Q

Which cellular network access method is based on a unique device identifying value?

A

CDMA

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25
Q

High speed Internet access over a Digital Subscriber Line uses which type of carrier?

A

Phone lines

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26
Q

What is meant by the description of fiber optic as being a “converged service”?

A

It can carry voice, video, and data on the same cable

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27
Q

Which connection methods would you most likely implement for devices in a PAN?

A

Wi-FI

Bluetooth

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28
Q

Which type of ISDN service would offer the highest bandwidth?

A

E1-PRI

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29
Q

a __ Are typically wireless networks that allow devices such as laptops, printers, and mobile devices to be interconnected.

A

PAN

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30
Q

a __ PAN is Usually a single computer connected to multiple devices using things like USB or FireWire

A

wired

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31
Q

WPAN

A

Wireless Personal Area Network

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32
Q

a __ PAN is
Implemented using Bluetooth, WiFi, or infared
More common with todays devices

A

wireless

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33
Q 
Wireless keyboards
	Wireless printers
	Wireless mice
	Smartphones
	Tv remotes
	Gaming consoles
	Smartphone technologies

the are all examples of devices in a ___

A

PAN

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34
Q

Do not require additional space or wiring
Connect to numerous devices at once
Cost effective
Easy, reliable, and secure

the are all advantages of a __

A

PAN

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35
Q

Limited range
Interference
E.g. radio signals
Slow data transfer

these are all disadvantages of a __

A

PAN

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36
Q

MAN

A

Metropolitan Area Network

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37
Q

___ is a small LAN

A

MAN

Metropolitan Area Network

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38
Q

Fiber Distributed Data Interface (FDDI)
Used to transfer data in a LAN
Asynchronous Transfer Mode (ATM)
Ideal for audio and video conferencing online
Switched Multimegabit Data Service (SMDS)
Used to transfer data over the large geographical area

These are all technologies of a __

A

MAN

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39
Q 
Government agencies
	University campuses or may hear (CAN)
	Hospitals
	Network of fire stations
	Airports
        Libraries

These are examples of what area network?

A

MAN

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40
Q

It provides better bandwidth
Potential speed for connecting links
Quickly access resources shared on the network
Potential cost savings
Certain implementations allow shared internet connections

These are advantages of what area network?

A

MAN

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41
Q

Equipment can be expensive
More administrative overhead
Can become difficult to manage if it becomes too large
Most implementations require fiber optic connections

These are disadvantages of what area network?

A

MAN

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42
Q

WMN

A

Wireless Mesh Network

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43
Q

_ networks are created using wireless access points

44
Q

_ are small transmitters and function the same as a wireless router

45
Q

The advantages of _ are
Cost Savings
-Less setup required
-Fewer cables
Nodes are self-configuring and self-healing
Uses technologies that are generically in place (802.11)

46
Q

The disadvantage of _ are
Difficult to manage and maintain
-Devices tend to be placed in locations that are difficult to access (maybe behind a ceiling or barrier)
Can be expensive
-As more devices are added, the costs go up

47
Q

_ internet is fast and reliable technology you can use to connect a residence to the internet

48
Q

Broadband technology is often referred to as _

A

Hybrid Fiber-Coaxial (HFC)

49
Q

_ cable lines are used in the residence

50
Q

__ uses unused channels

A

cable internet

51
Q

__ are predefined frequency ranges that are otherwise used for television programming

A

unused channels

52
Q

__ requires a cable modem and internet subscription

A

cable internet

53
Q

The advantages of _ are

Works without a phone line
Fast connection speed (faster than DSL)
Less restricting in terms of location (if provider uses HFC)
Reliability

54
Q

the disadvantages of _ are

Cable speeds can be influenced by
-Bandwidth caps
-High volume of users
Limited availability
-Rural areas
55
Q

DSL

A

Digital Subscriber Line

56
Q

_ is technology for delivering high bandwidth Internet Service over regular telephone lines

57
Q

Does not compete with the telephone service

Uses high transmission frequencies to separate the data from the voice signals

Speeds vary depending on provider and tier, but current services should offer up to 10 mbps or more for a standard service

58
Q

a central connection point that the DSL provider has that would aggregate all of the connections in one particular area

A

PC-DSL Modem-DSL Access Multiplexer (DSLAM)

59
Q

The two varieties of DSL are _ and _

A

Asymmetric and Symmetric

60
Q

_ DSL is usually DSL service at home

-It means there is a variance between the speed of downloads versus uploads. This is what you want at home. Most of the speed should be allocated to downloads

61
Q

_ DSL is equal balance of uploading and downloading because you are transmitting as much info as you are downloading

Ex. You have a corporate network that does a lot of video conferencing

62
Q

The advantages of _ are

High bandwidth
Uses existing phone lines
Allows internet connection and phone line to be used at the same time (ADSL only) SDSL requires a dedicated line
Modems are often provided by service providers

63
Q

The disadvantages of _ are

Performance can suffer the farther you are from the provider (distance limitation of about 3 miles)
Requires a landline
Limited availability in remote areas

64
Q

_ lines consist of tiny strands of plastic or glass

Uses optic transmission (pulses of light)

Considered the best option for reliability and performance (because of the speed and the distance it can travel)

A

Fiber optic

65
Q

The average speed of fiber is

A

50 -100 Mbps

66
Q

The high end speed of fiber is

A

1 – 10 Gbps

67
Q

The average speed of DSL is

A

768 Kbps – 1.5 Mbps

68
Q

The high end speed of DSL is

A

3 Mbps – 10 Mbps

69
Q

The average speed of cable is

A

4 Mbps – 6 Mbps

70
Q

The high end speed of cable is

A

10 – 100+ Mbps

71
Q

The average speed of a satellite is

A

5 Mbps – 10 Mbps

72
Q

The high end speed of a satellite is

A

12 Mbps – 25 Mbps

73
Q

The advantages of _ are

Speed

Better at carrying information over long distances

Not susceptible to interference

  • Radio
  • Electrical

Lines are less prone to damage
-Wear and tear

74
Q

the disadvantages of _ are

Not available in all areas
Requires all new infrastructure
-Costs absorbed by service provider

75
Q

_ is

Old technology

Considered very slow by todays standards
-56 Kbps
Can perform basic internet related tasks
-E-mail
-Browsing
76
Q

The advantages of _ are

Uses existing phone lines (you would need a modem)
-Does not require special line to be installed
accounts can be used anywhere there is a phone line

77
Q

the disadvantages of _ are

Slow speeds
Ties up the phone line while internet is in use

78
Q

_ internet is a wireless connection and uses three satellite dishes

ideal for remote areas
ex. ships at sea or oil rigs at sea

79
Q

On the _ internet the three dishes are

Once attached to property
One in space
One at the internet server provider

80
Q

The advantages of _ are

Faster than dial-up
High bandwidth
Does not require a phone line
Available in remote areas

81
Q

the disadvantages of _ are

Poor latency
Weather and obstructions like branches and buildings can affect signal strength
Bandwidth limitations (throttling)
Can be expensive

82
Q

ISDN

A

Integrated Services Digital Network

83
Q

_ is

Set of communication standards for digital telephone connections
Used to transmit voice and data over a digital line
Originally designed to run on digital telephone systems already in use

84
Q

_ is a circuit-switched telephone network system
Also allows access to packet switched networks
Has been replaced by broadband Internet connections in recent years

85
Q

The two types of ISDN are _ and _

A

BRI (Basic Rate Interface)

PRI (Primary Rate Interface)

86
Q

This type of ISDN is _ and is

Lower tier of service
Provides only basic needs
Lower cost

A

BRI (Basic Rate Interface)

87
Q

This type of ISDN is _ and is

Better connection
More reliable
Faster speeds

A

PRI (Primary Rate Interface)

88
Q

has to bearer channels that carried data. B channel and D channel. Each one is 64 kilobits per second. D stands for data is data signaling but doesn’t carry data. Bandwidth came from the B channels.

A

BRI (2B+D)

89
Q

_ came in two varieties
• T1-PRI (23B + D)
• E1-PRI (30B + D)
• T1 and E1. T1 is used in North America and Japan. E1 is used in Europe. T1 has 23 Bearer channels. E1 has 30 Bearer channels. They are both faster than BRI. T1 is 1.5 megabits faster and E1 is around 2.

90
Q

The advantages of _ are

Multiple digital channels
Consistent transfer rates
Governed by a world-wide set of standards
Competitively priced

91
Q

The advantages of _ are

Costly compared to other telephone systems
Required specialized digital devices

92
Q

LOS

A

Line of Sight

93
Q

_ is

The path between two antennas
Important to consider any obstructions when designing an outdoor wireless network
(Is something in the way? Is there an obstruction of some kind or do you have a clear path for those wireless signals to travel?)

A

Line of Sight

94
Q

The different degrees of _ are

line of sight
near line of sight
no line of sight

A

line of sight

95
Q

The degree of _ is no obstacles reside between the two antennas. Nothing is in the Fresnel zone

A

line of sight

96
Q

_ is the area in between the antennas where you might find electromagnetic signals stills experiencing some kind of interference.

A

Fresnel zone

97
Q

the degree of _ may include partial obstructions between two antennas
• Eg. Trees

A

Near Line of Sight nLOS

98
Q

the degree of _ is when full obstructions may exist between the two antennas

A

Non line of Sight (NLOS)

99
Q

_ are the networks over which mobile phones operate

-Also referred to as ‘mobile networks’

A

cellular networks

100
Q

cellular network is referred to as cellular as the network is split into _

101
Q

CDMA

A

Code Division Multiple Access

102
Q

_ is used to allow several users to send data over the same frequency
Each transmitter is assigned a code
The signal is spread over a range of frequencies using pseudorandom pattern
The signal for each user is modulated by their unique code

103
Q

TDMA

A

Time Division Multiple Access

104
Q

__ is a Channel access method used for channel sharing without interference
Multiple stations can use and share the same transmission channel
-Signals are divided into different time slots
-Synchronization and timing of signals presented a challenge as users moved

105
Q

__ was largely implemented in 2G mobile networks and has largely been superseded by CDMA

CompTIA A+ (Core 1) (35 decks)

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