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CPE109 > Module 1: Computer Networks and Security > Flashcards

Module 1: Computer Networks and Security Flashcards

1
Q

it is a worldwide collection of interconnected networks, cooperating with each other to exchange information using common standards

A

Internet

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2
Q

four network types

A

small home network
small office and home office network
medium to large network
internet

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3
Q

Network type that is used by corporations and schools, can have many locations with hundreds or thousands of interconnected hosts.

A

medium to large network

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4
Q

Network type that is a network of networks that connects hundreds of millions of computers world-wide.

A

internet

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5
Q

Network type that connects a few computers to each other and to the internet.

A

small home network

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6
Q

Network type that allows computers in a home office or a remote office to connect to a corporate network, or access centralized, shared resources.

A

small office and home office network

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7
Q

What are example of mobile devices

A

smart phone
tablet
smartwatch
wearable computer

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8
Q

A mobile device that is in the form of glasses, such as Google Glass, contains a tiny screen that displays information to the wearer in a similar fashion to the Head-Up Display (HUD) of a fighter pilot.

A

wearable computer

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9
Q

A mobile device that can help people who are wearing the device to track their health.

A

smartwatch

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10
Q

A mobile device that combine the functions of many different products together, such as a telephone, camera, GPS receiver, media player, and touch screen computer.

A

smart phone

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11
Q

A mobile device that come with on-screen keyboards, so users are able to do many of the things they used to do on their laptop computer, such as composing emails or browsing the web.

A

tablet

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12
Q

What are example of connected home devices

A

security system
household appliance
smart television
gaming console

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13
Q

A connected home device that can be monitored and configured remotely using a mobile device, such as lighting and climate controls.

A

security system

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14
Q

A connected home device that can be connected to the internet such as refrigerators, ovens, and dishwashers

A

household appliance

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15
Q

A connected home device that can be connected to the internet to access content without the need for its service provider equipment.

A

smart television

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16
Q

A connected home device that can connect to the internet to download games and play with friends online.

A

gaming console

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17
Q

Give example of other connected devices

A

smart car
radio frequency identification tag
sensor
medical device

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18
Q

A connected device that can connect to the internet to access maps, audio and video content, or information about a destination.

A

smart car

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19
Q

A connected device that can be placed in or on objects to track them or monitor sensors for many conditions.

A

radio frequency identification tag

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20
Q

A connected device that can provide users or medical professionals with direct feedback or alerts when vital signs are at specific level.

A

medical device

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21
Q

A connected device that can provide temperature, humidity, wind speed, barometric pressure, and soil moisture data

A

sensor

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22
Q

Three types of personal data

A

Volunteered data
Observed data
Inferred data

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23
Q

A type of data that is created and explicitly shared by individuals, such as social network profiles.

A

Volunteered data

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24
Q

A type of data that is based on analysis of volunteered or observed data.

A

Inferred data

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25
A type of data that is captured by recording the actions of individuals, such as location data when using cell phones.
Observed data
26
It refers to the physical medium on which the signals are transmitted.
media
27
Three common methods of signal transmission used in networks
Electrical signal Optical signal Wireless signal
28
Method of signal transmission where transmission is achieved by representing data as electrical pulses on copper wire.
Electrical signal
29
Method of signal transmission where transmission is achieved by using infrared, microwave, or radio waves through the air.
Wireless signal
30
Method of signal transmission where transmission is achieved by converting the electrical signals into light pulses
Optical signal
31
Computers and networks only work with this number system
binary digit
32
it is the capacity of a medium to carry data.
bandwidth
33
It is the measure of the transfer of bits across the media over a given period of time.
throughput
34
It refers to the amount of time, including delays, for data to travel from one given point to another
latency
35
A computer host that have software installed that requests services from the server.
client
36
A computer host that have software installed which provides information to other hosts on the network.
server
37
Three types of server
email web file
38
An application that allows a device to act as both a client and a server within the same communication.
peer-to-peer (P2P)
39
Three categories of hardware components
end devices intermediate devices network media
40
These devices form the interface between users and the underlying communication network
end devices
41
A device where the voice signal is relayed from one tower to another tower until it is delivered to its destination.
mobile phone
42
Mobile phones are often referred to as "_____” because the geographic area in which an individual tower can provide a signal to a phone.
cell phones
43
Mobile phones use _____ to transmit voice signals to antennas mounted on towers located in specific geographic areas.
radio waves
44
What are other examples of wireless network?
global positioning system wi-fi bluetooth near field communication
45
A wireless technology that allows devices to communicate over short distances.
bluetooth
46
A wireless technology that uses satellites to transmit signals that cover the globe.
global positioning system
47
A wireless technology that lets the phone connect to local networks and the internet.
wi-fi
48
A wireless technology that enables data to be exchanged by devices that are in very close proximity to each other, usually less than a few centimeters.
near field communication
49
What are main categories of LAN components?
hosts peripherals network devices network media
50
A main category of LAN component that sends and receives user traffic.
host
51
A main category of LAN component that relies on their connected host to perform all network operations.
peripheral
52
A main category of LAN component that is a generic name for most end-user devices.
host
53
A main category of LAN component that do not communicate directly on the network.
peripheral
54
A main category of LAN component that moves and controls network traffic.
network device
55
Examples of this main category are hubs, switches, and routers.
network device
56
Examples of this main category are personal computers and network attached printers.
host
57
Examples of this main category are cameras, scanners, and locally attached printers
peripheral
58
Examples of this main category are copper, fiber optic, and wireless technologies
network media
59
A main category of LAN component that provides connections between hosts and network devices.
network media
60
A main category of LAN component that connect other devices, mainly hosts.
network device
61
To physically connect to a network, an end-user device must have a _______ and some configuration of the operating system so that the device can participate in the network.
network interface card (NIC)
62
This identifies the host on the network.
IP (internet protocol) address
63
This is used to identify the network on which the host is connected.
subnet mask
64
This identifies the networking device that the host uses to access the internet or another remote network.
default gateway
65
What is the protocol used to dynamically assign address to devices in a network.
dynamic host configuration protocol
66
It shows where the wiring is installed and the locations of the networking devices that connect the hosts.
physical topology
67
A topology shows how network devices connect.
physical topology
68
A topology that illustrates the relevant network configuration information.
logical topology
69
What are the most common network cables?
twisted-pair cable coaxial cable fiber-optic cable
70
This cable is constructed of either glass or plastic and it is immune to EMI and RFI.
fiber-optic cable
71
This network cable was one of the earliest network cabling types developed.
coaxial cable
72
This cable is used by cable television companies to provide service and for connecting the various components that make up satellite communication systems.
coaxial cable
73
This cable consists of one or more pairs of insulated copper wires that are twisted together and housed in a protective jacket.
twisted-pair cable
74
This cable uses pulses of electricity to transmit data.
twisted-pair cable
75
Data transmission over copper cable is sensitive to ____________.
electromagnetic interference (EMI)
76
A source of interference that occurs when cables are bundled together for long lengths.
crosstalk
77
two commonly installed types of twisted-pair cable
Unshielded twisted-pair (UTP) Shielded cables (STP)
78
A type of twisted-pair cable that is used almost exclusively in European countries.
Shielded cables (STP)
79
A type of twisted-pair cable that is used to connect workstations, hosts and network devices.
Unshielded twisted-pair (UTP)
80
A type of twisted-pair cable that is the most common in North America and many other areas.
Unshielded twisted-pair (UTP)
81
A twisted-pair cable that consists of 4 pairs of twisted cables.
Unshielded twisted-pair (UTP)
82
A twisted-pair cable that are immune to EMI and RFI interference.
Shielded cables (STP)
83
This cable provides improved shielding compared to UTP and can therefore carry more data.
Coaxial cable
84
This cable that is used to directly connect unlike devices.
straight-through cable
85
A UTP cable that is used for voice communication.
category 3
86
A UTP cable that supports 1000Mb/s.
category 5e
87
A UTP cable that is manufactured with higher standard than Cat 3 to allow for higher data transfer rates
category 5
88
A UTP cable that supports 100Mb/s to 1000Mb/s.
category 5
89
This cable carries data in the form of electrical signals.
coaxial cable
90
This cable transmit data using pulses of light.
fiber-optic cable
91
A part of fiber-optic cable that tends to act like a mirror.
cladding
92
A part of fiber-optic cable that protects the fiber against abrasion, moisture, and other contaminants.
jacket
93
A part of fiber-optic cable that surrounds the buffer, prevents the fiber cable from being stretched when it is being pulled
strengthening material
94
A part of fiber-optic cable that helps shield the core and cladding from damage.
buffer
95
A part of fiber-optic cable where light pulses travel.
core
96
What are the 2 TIA/EIA standards (wiring scheme) are widely implemented for typical Ethernet installation?
t568a t568b
97
A utility that can be used to test end-to-end connectivity between the IP address of the sending host and the IP address of the destination host.
ping
98
A command that displays each hop along the way and the time it takes for the message to get to that network and back.
traceroute
99
Each individual network through which the message travels is referred to as a ____.
hop
100
A utility that traces the route a message takes from its source to the destination.
traceroute
101
A command that measures the time that it takes test messages to make a round trip from the source to the destination, and whether the transmission is successful.
ping
102
The traceroute utility is called ____ in the Windows environment.
tracert

CPE109 (9 decks)

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