Network Types Flashcards
1
Q
LAN
A
Local Area Network
2
Q
A __ network of computers and other components located relatively close together
A
LAN
3
Q
What are the two types of LAN
A
Enterprise LAN
SOHO (Small Office Home Office) LAN
4
Q
___ LAN will have a lot more devices. It could have thousands of computers and hundreds of printers
A
Enterprise
5
Q
__ LAN may have a few computers and maybe one printer
A
SOHO
6
Q
The advantages of \_\_ are Resource sharing -printers -drivers -internet -software
Communication
- easy
- fast
- time saving
A
LAN
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
8
Q
WAN
A
Wide Area Network
9
Q
__ is used to transfer data across large distances.
commonly used to connect multiple LANs
A
WAN
10
Q
The three different protocols of WAN are
A
PPP (point to point protocol)
Frame relay
ATM (Asynchronous transfer mode)
11
Q
The main distinction between LAN and WAN is
A
the are of the size
12
Q
LAN or WAN?
Area - single building or small geographic area
Ownership - owned by organization
A
LAN
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
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
15
Q
PAN
A
Personal Area Network
16
Q
a __ is an interconnection of personal devices within range of an individual
-range is typically within 10 meters
A
PAN
17
Q
What would be considered to be the primary benefit of Satellite Internet access?
A
Able to reach very remote areas
18
Q
Which characteristics of cable Internet service might be considered to be disadvantages?
A
Volume of users
Living in a very remote area
19
Q
The area where obstacles may interfere with Line-of-Sight wireless service is known as what zone?
A
Fresnel
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
21
Q
Which type of entity would be most likely to implement a MAN?
A
A university
22
Q
In which type of environment would you most likely encounter a SOHO LAN?
A
A small business
23
Q
A wireless mesh network would most likely be configured for which type of access?
A
802.11
24
Q
Which cellular network access method is based on a unique device identifying value?
A
CDMA
25
High speed Internet access over a Digital Subscriber Line uses which type of carrier?
Phone lines
26
What is meant by the description of fiber optic as being a “converged service”?
It can carry voice, video, and data on the same cable
27
Which connection methods would you most likely implement for devices in a PAN?
Wi-FI
| Bluetooth
28
Which type of ISDN service would offer the highest bandwidth?
E1-PRI
29
a __ Are typically wireless networks that allow devices such as laptops, printers, and mobile devices to be interconnected.
PAN
30
a __ PAN is Usually a single computer connected to multiple devices using things like USB or FireWire
wired
31
WPAN
Wireless Personal Area Network
32
a __ PAN is
Implemented using Bluetooth, WiFi, or infared
More common with todays devices
wireless
33
```
Wireless keyboards
Wireless printers
Wireless mice
Smartphones
Tv remotes
Gaming consoles
Smartphone technologies
```
the are all examples of devices in a ___
PAN
34
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 __
PAN
35
Limited range
Interference
E.g. radio signals
Slow data transfer
these are all disadvantages of a __
PAN
36
MAN
Metropolitan Area Network
37
___ is a small LAN
MAN
| Metropolitan Area Network
38
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 __
MAN
39
```
Government agencies
University campuses or may hear (CAN)
Hospitals
Network of fire stations
Airports
Libraries
```
These are examples of what area network?
MAN
40
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?
MAN
41
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?
MAN
42
WMN
Wireless Mesh Network
43
_ networks are created using wireless access points
Mesh
44
_ are small transmitters and function the same as a wireless router
Nodes
45
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)
WMN
46
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
WMN
47
_ internet is fast and reliable technology you can use to connect a residence to the internet
Cable
48
Broadband technology is often referred to as _
Hybrid Fiber-Coaxial (HFC)
49
_ cable lines are used in the residence
coaxial
50
__ uses unused channels
cable internet
51
__ are predefined frequency ranges that are otherwise used for television programming
unused channels
52
__ requires a cable modem and internet subscription
cable internet
53
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
cable
54
the disadvantages of _ are
```
Cable speeds can be influenced by
-Bandwidth caps
-High volume of users
Limited availability
-Rural areas
```
cable
55
DSL
Digital Subscriber Line
56
_ is technology for delivering high bandwidth Internet Service over regular telephone lines
DSL
57
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
DSL
58
a central connection point that the DSL provider has that would aggregate all of the connections in one particular area
PC-DSL Modem-DSL Access Multiplexer (DSLAM)
59
The two varieties of DSL are _ and _
Asymmetric and Symmetric
60
_ 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
ADSL
61
_ 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
SDSL
62
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
DSL
63
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
DSL
64
_ 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)
Fiber optic
65
The average speed of fiber is
50 -100 Mbps
66
The high end speed of fiber is
1 – 10 Gbps
67
The average speed of DSL is
768 Kbps – 1.5 Mbps
68
The high end speed of DSL is
3 Mbps – 10 Mbps
69
The average speed of cable is
4 Mbps – 6 Mbps
70
The high end speed of cable is
10 – 100+ Mbps
71
The average speed of a satellite is
5 Mbps – 10 Mbps
72
The high end speed of a satellite is
12 Mbps – 25 Mbps
73
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
fiber
74
the disadvantages of _ are
Not available in all areas
Requires all new infrastructure
-Costs absorbed by service provider
fiber
75
_ is
Old technology
```
Considered very slow by todays standards
-56 Kbps
Can perform basic internet related tasks
-E-mail
-Browsing
```
Dial-up
76
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
Dial-up
77
the disadvantages of _ are
Slow speeds
Ties up the phone line while internet is in use
Dial-up
78
_ internet is a wireless connection and uses three satellite dishes
ideal for remote areas
ex. ships at sea or oil rigs at sea
satellite
79
On the _ internet the three dishes are
Once attached to property
One in space
One at the internet server provider
Satellite
80
The advantages of _ are
Faster than dial-up
High bandwidth
Does not require a phone line
Available in remote areas
Satellite
81
the disadvantages of _ are
Poor latency
Weather and obstructions like branches and buildings can affect signal strength
Bandwidth limitations (throttling)
Can be expensive
Satellite
82
ISDN
Integrated Services Digital Network
83
_ 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
ISDN
84
_ is a circuit-switched telephone network system
Also allows access to packet switched networks
Has been replaced by broadband Internet connections in recent years
ISDN
85
The two types of ISDN are _ and _
BRI (Basic Rate Interface)
| PRI (Primary Rate Interface)
86
This type of ISDN is _ and is
Lower tier of service
Provides only basic needs
Lower cost
BRI (Basic Rate Interface)
87
This type of ISDN is _ and is
Better connection
More reliable
Faster speeds
PRI (Primary Rate Interface)
88
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.
BRI (2B+D)
89
_ 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.
PRI
90
The advantages of _ are
Multiple digital channels
Consistent transfer rates
Governed by a world-wide set of standards
Competitively priced
ISDN
91
The advantages of _ are
Costly compared to other telephone systems
Required specialized digital devices
ISDN
92
LOS
Line of Sight
93
_ 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?)
Line of Sight
94
The different degrees of _ are
line of sight
near line of sight
no line of sight
line of sight
95
The degree of _ is no obstacles reside between the two antennas. Nothing is in the Fresnel zone
line of sight
96
_ is the area in between the antennas where you might find electromagnetic signals stills experiencing some kind of interference.
Fresnel zone
97
the degree of _ may include partial obstructions between two antennas
• Eg. Trees
Near Line of Sight nLOS
98
the degree of _ is when full obstructions may exist between the two antennas
Non line of Sight (NLOS)
99
_ are the networks over which mobile phones operate
| -Also referred to as ‘mobile networks’
cellular networks
100
cellular network is referred to as cellular as the network is split into _
cells
101
CDMA
Code Division Multiple Access
102
_ 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
CDMA
103
TDMA
Time Division Multiple Access
104
__ 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
TDMA
105
__ was largely implemented in 2G mobile networks and has largely been superseded by CDMA
TDMA
