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Mark/Scott/Troy-Lanes Study > scott internet > Flashcards

scott internet Flashcards

1
Q

This technology turns a band of radio frequencies into a data pipe

A

DOCSIS

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2
Q

DOCSIS

A

Data Over Cable Service Interface Specification

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3
Q

is a combination of two or more computers or devices that share
information and communicatie through various topologies

A

Network

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4
Q

is a system of computers, peripherals, terminals, and databases connected by physical or wireless communication lines

A

Network

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5
Q

Devices communicate with each other unaided

A

P2P

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6
Q

group of computers and associated devices such as printers and
servers that share a common communication line other resources
within a small geographic

A

Local Area Network

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7
Q

is a computer that handles requests for data, e-mail, file transfers
and other network services from other computers

A

Server

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8
Q

a device that has two sides that represent a network

A

IP Gateway

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9
Q

The recognition of a user as having a valid account on the system
with legitimate access to its resources usually determined during
login by username and password

A

Authentication

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10
Q

a group of computers geographically far apart but connected

A

WAN

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11
Q

term is short for binary digit

A

Bit

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12
Q

electrical impulse representing a zero or one

A

Bit

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13
Q

single character of data

A

Bit

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14
Q

the width of a band of frequencies

A

Bandwidth

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15
Q

Byte =

A

8 bits

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16
Q

Kilo bit = in bytes

A

1024 Kb

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17
Q

kilo byte = in bytes

A

1024 Kb

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18
Q

term for one character stored or processed by a computer

A

Byte

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19
Q

Mb =

A

1 million bits Mb

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20
Q

MB =

A

1 million bytes MB

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21
Q

Gb =

A

1024 Mb

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22
Q

GB =

A

1024 MB

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23
Q

The two most common internet standards

A

802.11 and 802.3

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24
Q

NID

A

Network Interface Device

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25
Q

is a computer circuit board or card that is installed in a computer
so that it can be connected to a network

A

NIC

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26
Q

common method of networking computers is a wired LAN and can
be used with almost any kind of computer

A

Ethernet

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27
Q

popular technology that allows electronic devices to exchange
data wirelessly

A

Wifi

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28
Q

is device are onboard or add-on controllers that connect computers or devices to networks

A

NIC

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29
Q

What are the 3 types of medium used for NIC

A

electrically, fiber, wireless

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30
Q

standard 8 pin connector used to network computers,
routers,printers or game consoles over an ethernet connection

A

RJ-45

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31
Q

STP

A

Shielded Twisted Pair

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32
Q

Twisted pair cabling, typically uses the gauge of cable

A

AWG 22, 24

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33
Q

This type of cabling provides a layer of metallic shielding to further
prevent electromagnetic interference from entering the cable

A

STP

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34
Q

UTP

A

Unshielded Twisted Pair

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35
Q

EIA/TIA

A

Electronics Industries Alliance and Telecommunication Industry
Association

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36
Q

What ohms is Cat 5 or Cat 6

A

100 ohms

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37
Q

Cat 3 speed

A

10 Mbps

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38
Q

Cat 5

A

100 Mbps

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39
Q

Cat 5e speed

A

1000 Mbps

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40
Q

Cat 6 maximum data rate

A

10 Gbps

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41
Q

This IEEE standard was created for the use of radio signals over
specified frequencies to transmit data

A

802.11

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42
Q

SSID

A

Service Set Identifier

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43
Q

AP

A

Access Point

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44
Q

WEP

A

Wired Equivalent Privacy

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45
Q

WPA

A

Wifi Protected Access

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46
Q

This network allows access to any client or user without any
authorization

A

Open network

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47
Q

unique physical address also called a hardware address that all
devices that rely on computer network connections have

A

MAC (Media Access Control)

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48
Q

method of encrypting the network by using a pre-shared key

A

WEP (Wired Equivalent Privacy)

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49
Q

WEP encryption is used between how many hexadecimals

A

10-26 characters long

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50
Q

the process of converting data into a coded form to prevent it from
being read and understood by an authorized party

A

Encryption

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51
Q

uses a temporal key and was developed to replace WEP

A

WPA (Wifi Protected Access)

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52
Q

WPA is required to supply a plain text password between how
many characters long

A

8-63 characters

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53
Q

AES

A

Advanced Encryption Standard

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54
Q

Authentication system is typically found in commercial envirometns and verifies the username and password agaisnt as
servers database

A

802.1x

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55
Q

Network interfaces are identified by using a unique number known
as this

A

MAC address

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56
Q

MAC addresses are written with how many characters

A

12 hexadecimal

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57
Q

A set of rules and conventions that specifically governs how
computers exchange information over a network medium

A

Protocol

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58
Q

set of ruls governing the format of messages exchanged between
computers and people

A

Protocol

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59
Q

is the most commonly deployed network communications protocol
in the world today

A

IPv4

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60
Q

The newest version of the protocol that uses expanded features
and addressing to overcome the limitations of the prior version

A

IPv6

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61
Q

What are the 4 types of IP addresses

A

Public, Private, Loopback, Automatic Private

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62
Q

select ranges of IP addresses reserved for internal networks

A

Private IPs

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63
Q

IP addresses assigned to the devices NIC

A

Loopback IP

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64
Q

Used to verify that IP function is operating correctly on the device

A

Loopback IP

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65
Q

used for hosts or computers that have requested an IP address but have not been assigned one after a certain amount of
time

A

APIPA ( Automatic Private IP Addresses)

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66
Q

IP address can be assigned these three ways

A

Static, dynamic, Reserved

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67
Q

protocol for assigning dynamic IP addresses to devices on a
network

A

DHCP

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68
Q

DHCP

A

Dynamic Host configuration protocol

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69
Q

DNS

A

Domain Name Service

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70
Q

How many DNS root servers are there on the internet

A

13

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71
Q

The authoritative name servers that serve the DNS zones are
known as

A

Root servers

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72
Q

can send and receive simultaneously making it ideal for real time
two way communication

A

Full-duplex

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73
Q

This device sends data between two or more networks

A

Router

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74
Q

transmission of data in only one direction at a time

A

Half-duplex

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75
Q

a type of interface that allows users to interact with electronic
devices using images rather than text

A

GUI

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76
Q

Adapter that allows a customer to use this electrical system as a
transmission path for the home network

A

HomePlug

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77
Q

The resistance of a circuit to alternating current

A

Impedance

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78
Q

TCP/IP

A

Transmission Control Protocol/ Internet Protocol

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79
Q

TCP/IP first saw its use by the DoD in what year

A

1983

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80
Q

is a collection of software that manages computer hardware resources

A

Operating Software

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81
Q

OS

A

Operating Software

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82
Q

is the activation process flow, which configures the customers
account and equipment

A

CAAP (Comcast Advanced Activation Platform)

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83
Q

this type of provisioning occurs when the customer calls the call
center and order Xfinity internet

A

Self provisioning

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84
Q

CAAP

A

Comcast Advanced Activation Platform

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85
Q

is the ability to share resources and high speed internet access
across all computers connected within the home

A

Home networking

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86
Q

WOH

A

Wifi Optimized Home

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87
Q

This allows remote computers to communicate with the home
networking device, which connects them to the LAN and the
internet

A

Adapters

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88
Q

xFi service platform is built around providing industry leading
customer experiences in these 3 areas

A

Speed, coverage, control

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89
Q

allows a customer to use this electrical system as a transmission
path for the home network

A

Home Plug

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90
Q

WPS

A

Wifi Protected Setup

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91
Q

Xfinity wireless gateway supports up to how many unique SSID

A

4

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92
Q

It is an estimated measure of power level that an RF device from
an access point

A

RSSI

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93
Q

RSSI

A

Received Signal Strength Indicator

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94
Q

if a customer was to pair xfi pods to the own personal router direct
customer to this link

A

plumewifi.com

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95
Q

RSSI is measured between these two value

A

negative 100 thru 0 dBm

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96
Q

RSSI is measured in

A

dBm

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97
Q

Quality of the WI-FI signal is measured in this form

A

SNR

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98
Q

RSSI levels better than -40 dB

A

Exceptional

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99
Q

(-) 40 dB to -55 dB

A

Very Good Condition

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100
Q

-55 dB to -70 dB

A

Good

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101
Q

-70 to _-80 dB

A

Marginal

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102
Q

(-80 dB and beyond

A

Intermittent to no operation

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103
Q

This tool can be used to identify customer devices firmware, Boot
file, CPE and RSSI levels of active WIFI devices

A

Xray

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104
Q

Command line that displays the IP address, subnet mask, default
gateway

A

ipconifg

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105
Q

utility to determine whether a specific IP address is accessible

A

ping

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106
Q

utility that traces a packet from your computer to an internet host

A

Traceroute

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107
Q

what are the 3 benefits of the Flex customer experience

A

Entertainment, Experience, Value

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108
Q

xfi complete evalaution runs for how many days after the xfi
gateway is activated

A

14 days

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109
Q

this measures clients at different wifi signal quality across 2.4 Ghz
and 5 GHz channels

A

RSSI

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110
Q

this measures the best and total throughput at both 2.4 GHz and
5 GHz channels

A

Phy Rate

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111
Q

Abbreviation for the internet service that locates and translates
domain names into IP addresses

A

DNS

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112
Q

is a system of computers, peripherals, terminals and databases
connected by physical or wireless communication lines

A

network

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113
Q

is a geographically-close set of computers connected on a single
network that use the same communication device

A

LAN

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114
Q

group of connected computers that are geographically far apart

A

WAN

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115
Q

Spans and connect multiple LANs together

A

WAN

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116
Q

This device has 2 sides that represent a network

A

IP Gateway

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117
Q

The two most common network standards defines by IEEE

A

802.3 and 802.11

118
Q

ethernet straight cables are also known as this

A

Patch cable

119
Q

cable that looks ordinary twisted cable but with two pairs of wires
crossed

A

Crossover cable

120
Q

this cable is used to connect distributing devices or two computers
for unaided point to point communication

A

crossover cable

121
Q

cross over cable these pins are reversed

A

1,2,3,6,

122
Q

two types of AWG for CAT 5 or CAT 6

A

22 and 24

123
Q

defines the net bit rate, channel capacity or the maximum
throughput of a logical or physical communication path

A

Bandwidth

124
Q

side that connects to CPE

A

LAN

125
Q

side that connects to Comcast’s network

A

WAN

126
Q

What is it called when the download connection speeds are higher
than upload connection speeds

A

Asymmetrical

127
Q

This term provides users with the same download and upload
speeds

A

Symmetrical

128
Q

Desktop computer or workstation that obtains information and
applications from a server

A

Client

129
Q

Computer or program that manages access to centralized resources or services in a network

A

Server

130
Q

What are the 2 type of firewalls

A

Hardware and software

131
Q

This establishes a secure connection to an organizations private
network using a public network

A

VPN

132
Q

This device permits and denies traffic

A

Firewall

133
Q

is a fixed 12 digit hexadecimal number embedded into the manufacturers network controller hardware

A

MAC address

134
Q

MAC address is how many bits

A

48

135
Q

This organization is responsible for registered and assigned manufacturer identifiers

A

IEEE (Institute of Electrical and Electronics Engineers)

136
Q

assigns private IP addresses to all devices on the local network

A

DHCP server

137
Q

Private IP addresses are not visible in global networks and remain
hidden when accessing the internet via Public IP is known as

A

NAT

138
Q

Responsible for standardizing IP addresses port numbers and
managing DNS names

A

IANA (Internet Assigned Numbers Authority)

139
Q

This is a combination of an IP address and a port number

A

Socket Address

140
Q

Connecting oriented protocol considered reliable for data transfer

A

TCP

141
Q

Connectionless protocol that is faster than TCP

A

UDP

142
Q

Well-known ports

A

0-1023

143
Q

Registered ports

A

1024 - 49151

144
Q

Ephemeral ports (temporary)

A

49152 - 65,535

145
Q

is a process in which several hosts or computers share a single
or set of public IP to gain access to the internet

A

NAT

146
Q

translates one private IP to one public IP

A

Static NAT (1 to 1)

147
Q

randomly routes a private IP to an available pool of public IP

A

Dynamic NAT (1 to many)

148
Q

Allows multiple private Ips to share a common connection to the
internet over a single public IP address

A

NAT overload (PAT)

149
Q

OSI model was invented in what year

A

1977

150
Q

name of the technique of data flowing to and from the internet
and the computers on the local network, passing across the IP
gateway

A

Network Address Translation (NAT)

151
Q

This IP address begins with 127 octet

A

loopback

152
Q

Enables computers to assign an IP address automatically to itself
when a DHCP server is unreachable

A

APIPA 169.254

153
Q

First physical address in the subnet block identified with a CIDR
notation

A

Network ID

154
Q

Address used by all devices assigned a routable IP address as an
entry and exit point to a network

A

Gateway

155
Q

Last physical address in the subnet block

A

Broadcast

156
Q

notation is used to identify all IP addresses in a subnet block

A

CIDR (Classless Inter-domain Routing)

157
Q

The routable static IP addresses to customer

A

Routable

158
Q

The maximum distance for CAT 5E or Cat 6

A

100 m or 328 ft

159
Q

computer or software that serves webpages to users

A

Web server

160
Q

stores all email accounts and provides email services to Indvidual’s

A

Email server

161
Q

Protocol used on the internet for exchanging files

A

FTP (File Transfer Protocol)

162
Q

a systematic approach to t/s with connected devices

A

OSI model

163
Q

conceptualizes how applications send and receive data over a
network

A

OSI model

164
Q

ARP and DHCP layer

A

Layer 2 Data

165
Q

Physical Addressing, voltages Qos, Multiple Access

A

Layer 2 data

166
Q

This layer sends and receives bits

A

Layer 1 Physical

167
Q

This layer Ensures that messages are delivered to proper LAN
devices using MAC addresses

A

Layer 2 Data

168
Q

Layer 2 has to sub layers

A

MAC and LLC (Logical Link Control)

169
Q

Layer handling Flow control, Error recovery, Windowing, Acknowledgements

A

Layer 4 Transport

170
Q

This layer ensures applications data is separate from other users

A

Session

171
Q

sets open internet standards

A

IETF (The Internet Engineering Task force)

172
Q

This layer is for code formatting and compression and decompression

A

Presentation

173
Q

establishes a secure connection to an organization’s private network using a public network as the internet

A

VPN (Virtual Private Network)

174
Q

A network scheme in which portions of a network are connected
to the internet, but information sent is encrypted

A

VPN (Virtual Private Network)

175
Q

IP Gateway configuration to enable passthrough to the VPN device is known as

A

Bridge mode

176
Q

Maximum number of connected devices on wifi

A

250

177
Q

Wifi in the home typically use this topology

A

Star

178
Q

is a wireless technology that allows devices in the home to connect to each other

A

Zigbee

179
Q

This is an open source wireless technology

A

Zigbee

180
Q

The wireless technology is proprietary

A

Z wave

181
Q

Zigbee is capable of this many concurrent connections

A

64

182
Q

Zigbee range

A

less than 300 ft

183
Q

Zigbee topology

A

mesh

184
Q

Zigbee data transfer rates

A

250 kbps

185
Q

How often does the zigbee signal check with the touchscreen

A

every 27 mins

186
Q

Z-wave data rates

A

100 Kbps

187
Q

Z-wave range

A

100 ft

188
Q

Z-wave concurrent connections

A

greater than 200

189
Q

is a technology that allows devices to connect via radio waves

A

Bluetooth

190
Q

Bluetooth range

A

30 ft

191
Q

Bluetooth maximum connected devices

A

7

192
Q

Bluetooth topology

A

star

193
Q

This network is designed to handle high volumes of traffic in a
large area with little to no downtime

A

Wireless mesh network

194
Q

refers to the billions of physical devices around the world that are
now connected to the internet, collecting and sharing data

A

IoT

195
Q

is a residence that uses internet-connected devices to enable that
remote monitoring and management of appliances and systems

A

smart home

196
Q

Comcast recently acquired this company which utilizes LoRA
technology

A

MAchineQ

197
Q

is generally used in business environments such as a business
park with several buildings owned by the same company that
communicate wirelessly

A

LoRa

198
Q

LoRA works uses this network topology

A

Star

199
Q

is an open, global standard for secure enterprise-grade IoT connectivity.

A

LoRa

200
Q

LoRa connects devices up to how many miles in rural areas

A

30 miles

201
Q

is a comcast company focused on IoT in the enterprise market

A

MachineQ

202
Q

MachineQ use this technology for all its products and service
offerings

A

LoRa WAN

203
Q

LPWAN

A

Low-Power Wide Area Network

204
Q

LoRa

A

Long Range

205
Q

IETF

A

Internet Engineering Task Force

206
Q

The wireless gateway has the capability of setting up how many
SSIDs

A

4

207
Q

this protocol is the newest version of the internet protocol

A

IPv6

208
Q

RFC

A

Request for Comment

209
Q

This is always located at the beginning of an IP packet

A

IP header

210
Q

this contains information about IP version, source, destination and
more

A

IP header

211
Q

is a simple error-detection scheme used to protect the header of
IPV4 data packets against corruption

A

checksum

212
Q

is a set of protocols that were developed to support the secure
exchange of communications by authenticating and encrypting
each IP packet

A

IPsec (IP security)

213
Q

ICMP

A

Internet control message protocol

214
Q

which three communication models are similar between IPv4
and IPv6

A

Unicast, multicast, anycast

215
Q

one to one communication

A

unicast

216
Q

one to many communication

A

multicast

217
Q

communication between a single source and the closest of several
possible receivers

A

anycast

218
Q

is a network that has both IPv4 and IPv6 on every interface in the
networks

A

Dual stack

219
Q

Electronic message sent from one device to another

A

Email

220
Q

Protocol used on the internet for exchanging files

A

FTP

221
Q

Type of IP visible to the public

A

Routable IP

222
Q

Descriptive name for an address or group of addresses on the
internet

A

Domain Name

223
Q

Location for passing data in and out of your computer

A

Port

224
Q

Combines the functions of a cable modem and router in a single
device

A

Gateway

225
Q

Unique number for each computer on a given network

A

IP address

226
Q

LoRA uses this encryption standard

A

AES128

227
Q

LoRA battery lifetime up to this many years

A

10

228
Q

There are two primary technologies used in most smart home
devices

A

Zigbee and Z-Wave

229
Q

This network allows smart devices to connect to one another to
act as relays to the coordinator device

A

Mesh

230
Q

Every mesh network must have one of these devices

A

Coordinator

231
Q

This device in the mesh network stores the information about the
network and it maintains the security keys

A

Coordinator

232
Q

WWW

A

World Wide Web

233
Q

IEEE

A

Institute of Electrical and Electronics Engineers

234
Q

This is the most common version of NAT

A

PAT Port Address Translation

235
Q

PAT can use up to this many ports

A

65,536

236
Q

IPv4 is capable of producing this many IP addresses

A

4.2 billion

237
Q

IPv6 can produce this many IP addresses

A

340 undecillion

238
Q

This layer of OSI model includes NetBios and Point to Point
Protocol

A

Layer 5 Session

239
Q

PPTP

A

Point to Point Protocol

240
Q

This layer of OSI model includes MPEG and SSL

A

Layer 6 Presentation

241
Q

This layer is responsible for flow control or buffering of segment
packets to provide data transport reliability

A

Transport

242
Q

This layer manages the two-way dialogue between hosts such as
computers, thin clients, tablets and smartphones

A

Session

243
Q

This layer ensure information from one device application layer is
readable by the application layer of another device

A

Presentation

244
Q

Encryption such as JPEG, ASCII MPEG takes place at this layer

A

Presentation

245
Q

This layer synchronizes the application using TCP/IP services
such as HTTP, FTP POP3 SNMP DNS SSH

A

Application

246
Q

This layer is bidirectional communication and DOCSIS/MPEG/Ethernet data frames transfer from the cable service
to the customer home

A

Data

247
Q

This layer is bidirectional communication and IP datagram or
packet path determination from cable service to customers home

A

Network

248
Q

How many classes of IPv4

A

5 A, B, C,D, E

249
Q

IPv6 has been a standard by IETF since this year

A

1995

250
Q

IPv4 each octet represents how many bits

A

8 bits

251
Q

IPv6 each quartet represents how many bits

A

16 bits

252
Q

How many quartets in IPv6

A

8

253
Q

IPv4 octets is separated by this

A

period

254
Q

IPv6 quartet is separated by this

A

colon

255
Q

IPv4 is written in this format

A

decimal

256
Q

IPv6 is written in this format

A

hexadecimal

257
Q

IPv4 is written in this decimal range

A

0-255

258
Q

IPv6 is written in this hexadecimal range

A

0 to 9 and A thru F

259
Q

IPv4 is capable of producing this many possible addresses

A

4.2 billion

260
Q

Communication between tiny machines, sensors and actuators

A

Nanoscale Network

261
Q

Communication between devices very close to a person

A

Personal Area Network PAN

262
Q

Group of interconnected LANs within a geographic area

A

Campus Area Network CAN

263
Q

Network infrastructure that provides a path connecting WANs or
LANs

A

Backbone network

264
Q

Wireless network communication among devices in a close prox

A

Near me Area Network NAN

265
Q

Gb = in bits

A

1024 Mb

266
Q

GB = in bits

A

1024 MB

267
Q

NIC can be connected to devises in these 3 ways

A

Electronically, fiber, wireless

268
Q

This type of IP doesn’t use DHCP server

A

Static

269
Q

Are used for devices in which the network or users depend on
having the same address all of the time

A

Static

270
Q

Provides common services for computer programs

A

Operating Systems OS

271
Q

Purpose of this command is to determine the computers IP address and to reset the address if the computer cannot connect to
the internet

A

IPconfig

272
Q

This is the best long term solution to support the growth of the
internet and connected devices

A

IPv6

273
Q

RFC

A

Request For Comment

274
Q

To support faster packet processing and routing in, IPv6 these are
added to the packets

A

Fragmentation headers

275
Q

is generally used in business environments, such as a business
park with several buildings owned by the same company that
communicate wirelessly

A

LoRA

276
Q

is an open, global standard for secure enterprise-grade IoT connectivity

A

LoRA

277
Q

Bluetooth speed up to this, in Mbps

A

25

278
Q

This serves as a gatekeeper between the private and public
network

A

Hardware firewall

279
Q

serves as another line of defense for devices within the LAN

A

software firewall

280
Q

These are installed on individual computers to validate outbound
and inbound request

A

Software firewalls

281
Q

These two addresses are needed to route data to the proper
destination

A

MAC address and IP address

282
Q

MAC address containes these two identifier

A

Manufacturer and device

283
Q

identifies hardware devices on a network

A

IP address

284
Q

Are openings into the network

A

Ports

285
Q

These ports are reserved for major applications

A

Well-Known ports

286
Q

These ports are used for vendor applications

A

Registered ports

287
Q

These ports are used for private and used for various applications

A

Ephemeral

288
Q

PAT is also called

A

NAT overload

289
Q

is the most common version of NAT used in todays networks

A

PAT

290
Q

translates private IP addresses to the public IP address via port
numbers.

A

PAT

291
Q

translates private IP addresses to the public IP address.

A

PAT

Mark/Scott/Troy-Lanes Study (11 decks)

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