MODULE 1 Flashcards
(98 cards)
1
Q
- is almost as important to us as our reliance on air, water, food, and shelter
A
communication
2
Q
through the use of - , we are connected like never before
A
networks
3
Q
every computer on a network is called a - or -
A
host or end device
4
Q
there are computers that provide information to end devices
A
servers
5
Q
name 3 types of servers provided in the lecture
A
email servers, web servers, file servers
6
Q
these are computers that send requests to servers to retrieve information
A
clients
7
Q
to access the service provided by this server, clients use client software
A
8
Q
to access web pages provided by web servers, clients use this
A
browser software
9
Q
these access files provided by file servers
A
client devices
10
Q
it is possible to have a device be a client and a server in this type of network
A
peer-to-peer network
11
Q
peer-to-peer network is only recommended for this
A
very small networks
12
Q
4 advantages of peer-to-peer network
A
- easy to set up
- less complex
- lower cost
- used for simple tasks such as transferring files
13
Q
4 disadvantages of peer-to-peer network
A
- no centralized administration
- not as secure
- not scalable
- slower performance
14
Q
this is where a message originates from or where it is received in a network
A
end devices
15
Q
this originates with an end device, flows through the network, and arrives at an end device
A
data
16
Q
data originates with a/an - , flows through the - , and arrives at a/an -
A
end device, network, end device
17
Q
this interconnects end devices
A
intermediary device
18
Q
4 examples of intermediary devices as stated in the lecture
A
switch, wireless access point, router, firewall
19
Q
3 roles of intermediary devices in a network
A
- regenerate and restraint data signals
- maintain information about what pathway exists in the network
- notify other devices of errors and communication failures
20
Q
communication across a network is carried through a - which allows a message to travel from source to destination
A
medium
21
Q
this type of media uses electrical impulses
A
metal wires within cables
22
Q
this type of media uses pulses of light
A
glass or plastic fibers within cables (fiber-optic cable)
23
Q
this type of medium uses modulation of specific frequencies of electromagnetic waves
A
wireless transmission
24
Q
these, often called topology diagrams, use symbols to represent devices within the network
A
network diagrams
25
in network topologies, these 2 terms are often used interchangeably
port and interface
26
these illustrate the physical location of intermediary devices and cable installation
physical topology diagrams
27
these illustrate devices, ports, and the addressing scheme of the network
logical topology diagrams
28
4 types of networks according to size
small home network, small office/home (SOHO) network, medium to large network, worldwide network
29
type of network that connects to a few small computers to each other and the internet
small home network
30
this network enables computers within a home or remote office to connect to a corporate network
small office/home network (SOHO network)
31
this network has many locations with hundreds or thousands of interconnected computers
medium to large network
32
this network connects hundreds of millions of computers worldwide, such as the internet
worldwide network
33
2 most common types of networks
LAN (local area network) and WAN (wide area network)
34
network infrastructure that spans a small geographical area
LAN
35
network infrastructure that spans a wide geographical area
WAN
36
LAN or WAN: interconnect end devices in a limited area
LAN
37
interconnect LANs over wide geographical areas
WAN
38
LAN or WAN: administered by a single organization or individual
LAN
39
LAN or WAN: typically administered by one or more service providers
WAN
40
LAN or WAN: provides high-speed bandwidth to internal devices
LAN
41
LAN or WAN: typically provides slower speed links between LANs
WAN
42
this is a worldwide collection of interconnected LANs and WANs
internet
43
these are connected to each other using WANs
LANs
44
3 mediums of WANs
copper wires, fiber optic cables, wireless transmissions
45
true or false: the internet is owned by one group
false
46
3 groups that were developed to maintain structure on the internet
IETF, ICANN, IAB
47
a private collection of lans and wans internal to an organization that is meant to be accessible only to the organizations members or others with authorization
intranet
48
an organization might use a/an - to provide secure access to their network for individuals who work for a different organization that needs access to thair data on their network
extranet
49
user of the intranet for an organization
company only
50
user of the extranet in an organization
suppliers, customers, collaborators
51
user of the internet in an organization
the world
52
popular services for - and - include broadband cable, broadband digital subscriber line (dsl), wireless wans, and mobile services
home users, small offices
53
- need faster connections to support ip phones, video conferencing, and data center storage
organizations
54
- are usually provided by service providers (sp) and may include: business dsl, leased lines, and metro ethernet
business-class interconnections
55
5 connections involved in home and small office internet connections
cable, dsl, cellular, sattelite, dial-up telephone
56
connection with a high bandwidth, always on, internet offered by cable television service providers
cable
57
connection with a high bandwidth, always on, and is an internet connection that runs over a telephone line
dsl
58
connection that uses a cellphone network to connect to the internet
cellular
59
connection who is a major benefit to rural areas without internet service providerrs
satellite
60
connection that is inexpensive, and is a low bandwidth option using a modem
dial-up telephone
61
before - , an organization would have been separately cabled for telephone, video, and data. each of these networks would use different technologies to carry the signal, and each technology would use a different set of rules and standards
converged networks
62
this carries multiple services on one link including data, voice, and video. they can deliver these over the same network infrastructure with the same set of rules and standards
converged data networks
63
this refers to the technologies that support the infrastructure that moves data across the netwoek
network architecture
64
4 basic characteristics of network architectures
fault tolerance, scalability, quality of service (qos), security
65
this limits the impact of a failure by limiting the number of affected devices
fault tolerant network
66
this is required for fault tolerance
multiple paths
67
this provides redundancy by implementing a packet switched network
reliable network
68
process of splitting traffic into packets that are routed over a network
packet switching
69
true or false: packet switching is possible with circuit-switched networks which establish dedicated circuits
false; not possible
70
a - network can expand quickly and easily to support new users and applications without impacting the performance of services to existing users
scalable
71
network designers follow - and - in order to make the networks scalable
accepted standards, protocol
72
this is the primary mechanism used to ensure reliable delivery of content for all users
quality of service (qos)
73
with a - in place, the router can more easily manage the flow of data and voice traffic
qos policy
74
quality of service, managed by the - , ensures that priorities are matched with the type of communication and its importance to the organization
router
75
- usually receive lower priority in qos and - will need a higher priority to maintain a smooth, uninterrupted user experience
webpage, voice over ip (voip) call
76
2 main types of network security that must be addressed
network infrastructure security, information security
77
this is the physical security of network devices; prevents unauthorized access to the devices
network infrastructure security
78
this is the protection of information or data transmitted over the network
information security
79
3 goals of network security
confidentiality, availability, integrity
80
goal of network security: only intended recipients can read the data
confidentiality
81
goal of network security: assurance that the data has not been altered during transmission
integrity
82
goal of network security: assurance of timely and reliable access to data for authorized users
availability
83
4 new networking trends that effect organizations and consumers
- byod
- online collaboration
- video communications
- cloud computing
84
this allows users to use their own devices giving them more opportunities and greater flexibilty
byod (bring your own device)
85
this means any device, with any ownership, used anywhere
byod
86
allows people to collaborate and work with others over the network on joint projects
online collaboration
87
allows use to store personal files or backup our data on servers over the internet
cloud computing
88
cloud computing is made possible by -
data centers
89
4 types of clouds
public cloud, private cloud, hybrid cloud, custom cloud
90
type of cloud that is available to the general public through a pay-per-use model or for free
public cloud
91
type of cloud that is intended for a specific organization or entity such as the government
private cloud
92
type of cloud that is made up of two or more cloud types - for example, part custom and part public
hybrid cloud
93
type of cloud that is built to meet the needs of a specific industry, such as healthcare or media; can be private or public
custom cloud
94
this is a growing trend that allows technology to be integrated into everyday appliances which allows them to interconnect with other devices
smart home technology
95
this can allow devices to connect to a lan where data network cables or wireless communications are not a viable option
powerline networking
96
in addition to dsl and cable, - is another option used to connect homes and small businesses to the internet; it is more commonly found in rural envrionments
wireless
97
this is an internet service provider that connects subscribers to designated access points or hotspots
wisp (wireless internet service provider)
98
this is an integral part of networking regardless of the size of the network; it must take into account the environment while securing data, but still allowing for quality of service that is expected of the network
network security
