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Flashcards in cct4 Deck (237):
1

What are benefits of a Key System (PBX)?

1.Allows a group of phone stations to access a common set of phone lines2.Fewer business lines can be purchased3.Additional built in features such as music on hold and call transfer

2

This device enables operators to deliver * lines of telephony, tiered data and other advanced Internet Protocol services

eMTA

3

What is the wiring pattern for a 66 Block- Telco standard connecting block?

a.Lines in from the left and out to the rightb.lead with "Tip" at the topc.Alternate "Tip" and "Ring"d. Leave 1-3 feet of excess wire around block

4

In BCDV, it's the interface between the eMTA and the 66/110 block demarc point

RJ-21X

5

Standard interface for connecting multiple line telephone equipment

RJ-21X

6

It's used to avoid kinks and sharp bends on telecom equipment boards

Mushroom Spool

7

It uses internal modem to transmit sales transaction data using telephone lines.

P.o.S. (Point of Sale System)

8

It's Output is 48 VDC,50 Watts,It has 18 Hour Backup with TM508 Idle,and 8 Hour Backup with all 8 lines in use.

Local Power Supply Unit

9

The Large Plug on an 8 line eMTA that connects to the power supply.

Telemetry

10

What is the color sequence for the Telemetry Plug on an 8 line eMTA?

White-Brown-Blue-Orange-Green

11

It deletes unused channel and inserts local feed for subscription channel or other video feed such as cameras or promotional video loop/

Channel Deletion Filter and Combiner

12

Loads baseband signal onto standard video channel carrier. Can eliminate the need for multiple DCT's.

Video Modulator

13

Connects to the combiner in the filter for local insertion of subscription channel

DCT

14

What is the demarcation point for Commercial Video?

Tap (if there is a tap in a communications room)Groundblock (if there's only a ground block at the site.)

15

Equipment from a Telephone Company, providing internet access to the customer

DSL Modem

16

Device that connects the customer’sinternal network to the Internet. Wirelesscapability may be denoted by antennae on the device

Router

17

Device that acts as a focal point inconnecting multiple computers within oneLocal Area Network (LAN).

Switch

18

“A managed hard drive connected toa LAN that can be accessible by anyoneon the Internet as defined by a company’sNetwork Administrator.

Network Attached Storage (NAS)

19

Similar to a 66 block, but providesless interference and is also certified fordata networks

110 Punch Down Connecting Block

20

This is the LEC network interfacethat supplies 1.54Mb/Sec symmetricaldata throughput.

T1

21

In its simplest form, it is an electronic message sent from one device to another.

E-mail

22

A protocol used on the Internet for exchanging files

FTP

23

The customer must have a Comcast issued IP Gateway to receive this type of IP address

static

24

This type of IP address is visible to the public

routable

25

A descriptive name for an address or group of addresses on the internet

Domain Name

26

Internet service that locates and translates domain names into IP addresses

DNS

27

A location for passing data in and out of your computer

port

28

10.0.0.0 is an example of a _______ address.

Private IP

29

A unique number for each computer on a given network

IP Address

30

A temporary IP address is also called a(n) _________ IP address.

dynamic

31

An IP address that does not change.

static IP address

32

a system of computers,peripherals, terminals, and databases connected by communications lines

Network

33

A geographically close set of computers connected on a single network and using the same communication device

LAN

34

It can be as small as a home network with 2 computers, or anoffice with hundreds of computers that share access to printers, programs and a connection to theinternet.

LAN

35

A group of computersgeographically far apart, but areconnected.

WAN

36

Uses a public network, such as the internet, to establish a secure connection to an organization’s private network

VPN

37

A technique by which several hostsor computers share a single IPaddress for access to the Internet.

(NAT) Network Address Translation

38

This enables a LAN to use one setof IP addresses for internal trafficand a second set of addresses forexternal traffic, and provides atype of firewall by hiding internalIP addresses.

(NAT) Network Address Translation

39

Similar to NAT, but a more specific tool. It forwards requests for a particular IP port pair to another IP port pair

(PAT) Port Address Translation

40

This feature is commonly used onpublicly connected hosts to makean internal service available to alarger network.

(PAT) Port Address Translation

41

It is the concept of partitioning large networks into smaller segments.

Subnetworking, or subnetting

42

A portion of a network that shares a common address component..

Subnet

43

On TCP/IP networks, they are defined as all devices whose IP addresses have the same prefix

subnets

44

Look at this IP address. 150.215.017.009What do the first two numbers (150.215) represent?

They define the network

45

Look at this IP address. 150.215.017.009What do the last two numbers (017.009) represent?

They define a device or a particular host on the network

46

(the lowest in value) this IP addressencompasses the entire subnetwork.

Network IP

47

This IP address is used on customer's equipment.

Routable IP

48

This address (the highest in value)- identifies all hosts/devices on the LAN.

Broadcast IP

49

This subnet is for customers with 1 Static IP (one static, publicly routable IP address)

/30 subnet

50

The /30 subnet mask is

255.255.255.252

51

How many IP addresses are in a /30 subnet mask?

4

52

This Subnet is for customers with five Static IPs (five static, publicly routable IP address)

/29 subnet

53

The /29 Subnet uses how many IP addresses?

8

54

The /29 subnet mask is

255.255.255.248

55

This Subnet is for customers with 13 Static IPs (13 static, publicly routable IP addresses)

/28

56

How many IP Addresses does a /28 Subnet use?

16

57

The /28 subnet mask is

255.255.255.240

58

This allows users to privately share information over public communication

VPN / Virtual Private Network

59

What are the two gateway configuration options for a customer with a VPN endpoint?

1. Assign a Static IP to the customer's device2. Configure Port Forwarding on the IP Gateway

60

software/hardware used to preventunauthorized access from a computer system or network ofcomputer systems

Firewall

61

This allows a selected computer tobypass the firewall features of thegateway and permits unrestrictedaccess from the Internet to thatcomputer

DMZ (demilitarized zone)

62

This feature is commonly used forgaming and videoconferencing –applications that will not functionthrough NAT.

DMZ (demilitarized zone)

63

A utility to determine whether aspecific IP address is accessible. Itsends a packet to the specifiedaddress and waits for a reply.

Ping

64

A utility that traces a packet fromyour computer to an Internet host,showing how many hops the packetrequires to reach the host and howlong each hop takes

Traceroute

65

What is the customer default username for on the Comcast Business Gateway?

cusadmin

66

What is the technician default username on the Comcast Business Gateway?

mso

67

MSO

Multi system Operator

68

allows you to direct inbound Internet traffic to connect to a specific application or computer within a private LAN via a predefined port

Port Forwarding

69

Provides the ability to dynamically open a specific inboundport based on a request from a local computer or user.

Port Triggering

70

Allows you to open or close specificinbound ports to connected computers or firewalls configured with a publicroutable IP address (for use by static IP customers only).

True Static IP Port Management

71

Enables you to restrict specific local hosts fromaccessing particular Internet applications

Port Blocking

72

the IP address that the gateway uses toforward all traffic that is not addressed to a client within Comcast's network.

Default Gateway

73

what is the address for the Comcast Business Gateway Login?

http://10.1.10.1

74

In regard to Comcast Business Voice, a serviceability check will consist of what two components?

1. Serviceability of the location2. E911 serviceability

75

What is the Demarcation point for Business Class Voice?

the 66 Block and/or the telephone jack on the eMTA to which the Customer's telephone network is connected

76

What is occurring when all theFront Panel LEDs are flashing?

Foreign voltage present on oneor more lines (or self-testwhen starting up)

77

How do you know if one of thetelephone lines if off the hook?

The LED of the telephone line isflashing

78

If Tel 7 is flashing slowly on an 8 line eMTA, about 1 flash per second, what does that indicate?

Line card Error

79

ATS

Advanced Technical Services

80

NGT

New Global Telecom (outsourced vendor)

81

TTS

Trouble Ticketing System

82

What is the MTTR for Business Class Voice customers?

4 hours

83

Customers can automatically distribute incoming calls to two or more extensions using which call feature?

Hunt Groups

84

Internet Phone services transmit phone calls over a

public network

85

5 Benefits of CT Champion Program to Comcast

1. Faster learning curve for new, talented employees2. Reduced turnover3. Increased loyalty4. Increased employee productivity5. Creation of an innovative environment

86

Name 3 of the 5 traits of Visual Learners

1. Learn through seeing2. Prefer to see the person speaking to them3. Think in pictures4. Like demonstrations and examples5. Take detailed notes

87

Name 3 of the 5 traits of Auditory Learners

1. Learn by listening2. Prefer discussion groups3. Pay close attention to voice4. Like information to be read aloud5. Like to ask questions and paraphrase

88

Name 3 of the 5 Traits of Tactile Learners

1. Learn by moving, doing and touching2. Prefer a hands-on approach3. Like to experiment4. Can become easily distracted5. Like to experience new things for themselves

89

5 steps to minimize anxiety

1. Remember that the audience is your friend2. Memorize the most important parts of what you'll say3. Practice positive self-talk4. Breath5.Check Your appearance

90

What are the four components of the human voice?

1. Rate2. Volume3. Force4. Pitch

91

Good eye control serves what 2 purposes?

1. It tells the listener something about you2. It allows you to learn something about the listener

92

The Six Key Techniques to Selling

1. Build rapport2. Ask questions3. Listen4. Position the product5. Communicate the benefits6. Ask for the sale

93

It works by separating successive pictures into two types of video information- that which stays the same from picture to picture, and that which changes from picture to picture

Digital compression

94

A device or software that enables compression and or decompression for digital video

video codec

95

What is the major advantage of MPEG compared to other codecs?

The MPEG files are much smaller for the same quality

96

Video CDs are an example of what type of MPEG application?

MPEG-1

97

DVD, CATV, and HDTV are examples of what type of MPEG application?

MPEG-2

98

Internet streaming, video on cell phones and interactive tv are examples of what MPEG application?

MPEG-4

99

A MPEG video is a sequence of what three kinds of encoded pictures?

I pictures, P pictures, and B pictures

100

DTCP

Digital Transmission Content Protection

101

It defines a cryptographic protocol for protecting audio/video entertainment content from illegal copying, intercepting and tampering.

DTCP

102

ACP

Analog Copying and Piracy

103

This prevents or distorts copies made over an analog connection between a source player and a DVD recorder, DVR, PC or VCR

ACP (Analog Copying and Piracy)

104

This is the protection of content by requiring certain criteria to be met before granting access to this content.

CA or Conditional Access

105

What is the speed, range, and frequency of 802.11b ?

11 Mbps, 100-150 feet indoors, 2.4 GHz

106

What is the speed, range, and frequency of 802.11a?

54 Mbps, 25-75 feet indoors, 5 GHz

107

What is the speed, range, and frequency of 802.11g?

54 Mbps, 100-150 feet indoors, 2.4 GHz

108

What is the speed, range, and frequency of 802.11n?

100 Mbps and higher, Up to 160 feet, 2.4 GHz

109

This inspects the master boot record, program files, and macro code for the presence of viruses.

Antivirus software

110

This type of software installs programs in RAM that continue to operate in the background while other software applications are running. It monitors all the computer's operations for any actions associated with viruses

Memory-resident antivirus software

111

This is a variant of spyware that displays advertising for products it thinks might interest you, based on the website you are browsing.

Adware

112

It can be defined as sending unsolicited bulk email.

spamming

113

What is the best way to prevent a hacker from accessing a customer's system?

A hardware firewall

114

A term used to describe a range of malicious software example is external code that changes your browser's settings.

Hijacking

115

This type of firewall rule compares key parts of each packet to a database of known safe data.

Stateful packet Inspection

116

This type of firewall rule examines each packet and if the origination address of the data is on a list of banned Internet locations, the firewall blocks it.

Packet Filtering

117

This type of firewall rule uses a server that examines all data based on the filtering rules and only forwards packets that obey the rules

Proxy

118

Before manually troubleshooting any IP problems, what should be done?

Run a network diagnostic check.

119

What type of port restricts connections speeds to about 6 Mbps?

USB

120

What operating system does not have a registry and does not require a backup?

Macintosh

121

What wireless adapter is credit-card sized wireless adapter that slides into the side of a laptop or desktop?

PC (PCMCIA) Card

122

What troubleshooting utility can you use in order to determine the computer's IP address, and to reset the address if the computer cannot connect to the Internet?

IPConfig

123

Which Business Class Internet optional feature allows customers to operate VPN or Web and E-Mail servers without the fear of interruption?

Static IP Addresses

124

How does a technician initiate a telnet session?

In the command prompt, type in Telnettype open and the (cm ip address)Enter username: msoEnter password: (password of the day)

125

What command in telnet will allow a technician to packet sniff both upstream and downstream for 3 seconds in Comcast's format?

sniff u+d 3 1

126

What does a technician type to display the existing NAT session log in a telnet session?

natShow

127

In a telnet session, what does a technician type to show the current dhcp lease info, including the IP, MAC and status of the private LAN?

dhcpShow

128

What calling feature allows different phone numbers to reach the same phone line with different ring patterns?

Distinctive Ring

129

A process that diverts a portion of the multiplexed aggregate signal at an intermediate point, and introduces a different signal for subsequent transmission in the same position.

Drop and Insert

130

A mathematical value derived from the number and severity of leaks in the cable system.

Cumulative Leakage Index (CLI)

131

How often is a CLI test performed?

Annually

132

What 2 ways can a CLI test be performed?

ground based or an aerial "flyover"

133

How long must leakage logs be kept on file?

At least 2 years

134

At what interval is CLI monitored?

Quarterly

135

FCC regulations requires a CLI figure of merit of what number?

64 or less

136

What is the most common cause of signal leakage?

poorly installed F-connectors in the drop

137

Carrier-to-beat rations greater than ______ are far enough below desired carrier level to be of little concern to the average viewer.

57 dB

138

This appears when ingress allows a locally broadcast TV channel's signal to enter the TV along with the channel's signal supplied by the network.

leading ghost

139

This is usually caused by a reflection on the cable system caused by poor directivity at the tap or device feeding the set.

following ghost

140

In cable systems it us usually caused when the same channel from two (or more) different TV stations is received by the same antenna.

Co-Channel Interference

141

Carrier-To-Noise Rule 1

If the input level (in dBmV) numerically equals an amplifier's NF, the output C/N will always e 59.2 dB.

142

Carrier-To-Noise Rule 2`

For each dB the input level is raised above the amplifier's NF, the output C/N improves by an equal amout above 59.2

143

Carrier-To-Noise Rule 3

C/N at the output of a single amplifier is always worse than that at the input by an amount equal to the amplifier's NF.

144

These are an undesired change in the waveform of a signal.

Distortions

145

This is literally the "crossing" of modulation from one channel to another

Cross Modulation (XMOD)

146

For systems carrying forty or more channels, what distortion becomes visible before XMOD?

composite triple beats (CTB)

147

This appears as a horizontal bar moving from the bottom to the top of the picture

Hum Modulation

148

A primary source of hum modulation

power passing chokes used in passive devices

149

It is a source of hum modulation found in older systems.

using series regulated DC power supplies in the amplifier housings.

150

A phase modulation algorithm that is a digital modulation scheme wherein the carrier is shifted in 90-degree steps

Quadrature Phase Shift Keying (QPSK)

151

The four phases in which a carries is sent in QPSK are at what degrees?

45, 135, 225, 315

152

This is a digital modulation scheme that allows 2 channels of information to be transmitted at the same time on a particular frequency by changing the phase and amplitude.`

Quadrature Amplitude Modulation (QAM)

153

Digital QAM signals carry 2 signals that are referred to as what?

I and Q components

154

This is a measure of signal strength relative to background noise in analog and digital communications.q

Signal-to-noise ratio

155

NPR

Noise Power Ratio

156

What test uses a white noise generator to simulate the data filled spectrum and a band-pass filter to limit the spectrum?

Noise power ratio test

157

the ratio of the error power to the average power in an ideal QAM signal

Modulation Error Ratio (MER)

158

A method where additional data bits are added to the digital video bit stream to help identify and correct any errors that may be caused by the transmission system

Forward Error Correction (FEC)

159

This is displayed as a ratio of the number of errors to correct data bits and is given in scientific notation

Bit Error Rate (BER)

160

Defined as a condition where interfering signals leak into a cable network.

Ingress

161

What is the limit for ingress between 5 and 42 MHz?

-30 dBmV

162

This device passes high frequencies well, but attenuates (or reduces) frequencies lower than the cut-off frequency..

High Pass Filter

163

POP

Proof of Performance

164

These tests help to ensure that cable systems' forward signals meet FCC standards as outlined in CFR 47, Part 76.605(a)(1-12) of the FCC regulations.

The Proof-of-Performance tests

165

Being able to carry and individually select different channels on a single cable by their unique frequency is called....

frequency division multiplexing (FDM)

166

Usually made of Aluminum, this device prevents ingress/egress and protects the electronics from the weather

Housing

167

Separates or combines the AC current's two parts: the AC power and the RF broadband signals

Power Diplex

168

This device separates and recombines the forward and reverse signals fro the coaxial cable so they can be routed to the appropriate components within the amplifier station.

Diplex Filter

169

Compensates for the unequal attenuation properties of coaxial cable at different frequencies

equalizer

170

These are usually selected for their low noise figure

Forward Amplifier Module (Trunk)

171

Sometimes called a Mop-Up, this device is used to try and correct for any undesired peaks or valleys within the passband of the amplifier

Response Equalizer

172

AGC

Automatic Gain Control

173

ALS

Automatic Level and Slope Control

174

Similar to AGC, maintains the proper tilt (caused by temperature change in a specified amount of coaxial cable) and output level despite changes in the input signals.

Automatic Level and Slope Control (ALS)

175

Used to boost the return signals, its bandwidth ranges from 5 to 42 MHz.

Return Amplifier

176

Used at output of bridger module, it is a signal splitting device that plugs into a trunk/bridger chassis.

Feedermaker

177

Provides a means of monitoring the various inputs and outputs without interrupting service.

Test Points

178

This is used to divert a specific amount of signal from the feeder system and distribute it to 2, 4, or 8 output ports for connection of customer drops.

Tap

179

How many ports are represented on a circular tap symbol?

2

180

How many ports are represented on a square tap symbol?

4

181

How many ports are represented on a hexagonal tap symbol.

8

182

How is tap value determined?

The sum of the directional coupler tap loss plus the loss of the splitter(s)

183

What is the lowest tap value?

4

184

These are low value taps that feed the internal splitter(s) directly without the use of a directional coupler

Terminating tap

185

When low frequency signals are not attenuated as much as high frequency signals in coax cable, it can result in the level of lower frequency signals exceeding the level of the higher frequency signals. What is this called?

reverse tilt

186

What device is used to compensate for reverse tilt?

In-Line Equalizer

187

This device can eliminate the problem of a modem that is connected to a low value tap from overloading the upstream return amplifier.

In-Line Conditioner

188

This is the medium that is used to transmit our signals from the headend to the customer.

coaxial cable

189

Four components of coaxial cable

Jacket, Outer Conductor (Sheath), Dielectric, and Center Conductor

190

What are the three basic parts of a fiber link?

the fiber cable, the transmitter, and the receiver

191

PBX

Private Branch Exchange

192

4 Common types of Toll-fraud

1. Unauthorized Voicemail access2. Unauthorized Call Forward and Transfer3. Direct Inward System Access (DISA)4. Social Engineering

193

DISA

Direct Inward System Access

194

This occurs when perpetrators access your voicemail illegally by determining your access password, and then place outbound calls from the system.

Unauthorized Voicemail Access

195

If a PBX voicemail system is breached, often Call Forward or Call Transfer can be invoked by a criminal to send inbound calls to an unauthorized destination. What is this process called?

Unauthorized Call Forward and Transfer

196

This telephone feature allows an outside caller to dial directly into the telephone system and to access all the system's features and functions.

Direct Inward System Access (DISA)

197

It is the most common way perpetrators commit Toll-fraud

Direct Inward System Access (DISA)

198

Changing all of your phone system factory default passwords to prevent fraud should be don how often?

60-120 days is recommended

199

Asking Comcast or PBX maintenance provider to turn off international calling functionality if not needed will help prevent what?

International Toll-Fraud

200

Installing intrusion detection alarms for the PBX room and Providing remote access only to those that need are are two forms of what?

PBX lock-down activities (Fraud Prevention Techniques)

201

Doing a PBX audit with PBX vendor and having a phone system security audit performed by a third party are examples of what?

Fraud prevention Techniques

202

What site do business class customers go to to manage services online?

business.comcast.com/myaccount

203

Where can a comprehensive Help & Support Library be located?

business.comcast.com/elp

204

What is the money back guarantee for Business VoiceEdge or Business Trunks?

60-day money back guarantee

205

Where can customers go to learn about the Comcast Business Promise?

business.comcast.com/promise

206

At what point in the installation process can a customer register an account online?

As soon as installation is scheduled.

207

What are the benefits of a customer registering their account online before the installation is completed?

1. set up billing preferences2. get installation text reminders3.access to the Upware marketplace

208

Why would a non-customer activate an account with Comcast Business Internet?

to access the Upware marketplace

209

What Business Internet services do not include wifi?

Internet-only Starter, Hospitality Internet or Ethernet services

210

DPC3939B

Model Number for the Business Wireless Gateway

211

Where can a customer go for more information on the Business Wireless Gateway?

mydeviceinfo.comcast.net and download the manufacturer's User Guide

212

How does a customer reset the Business Wireless Gateway?

Use a thin object to press the Reset Button on the back panel. Hold for 2-5 seconds, and then release

213

This is an online marketplace of cloud-based small business applications that are specifically built for business

Upware Market

214

A curated collections of business grade cloud solutions with simple access and account managment

Upware

215

Where would a customer go to download Norton Internet Security?

Upware Market

216

With this you have an on-the-go communications platform including:Microsoft Outlook, Windows Sharepoint, and Mobile Access

Hosted Microsoft Exchange

217

What is in a Web Hosting Starter Package?

the ability to build a 3-page website at your own domain, and 10 MB of storage space and 100 MB of data transfer

218

What is the cost of the Web Hosting Starter Package?

Included at no extra charge

219

How much storage space comes with the Web Hosting Business Package?

300 GB of storage space

220

How much storage space comes the Web Hosting Commerce Package?

400 GB of storage space

221

How does the Professional Web Hosting Package compare to the Commerce Package?

Professional has all of the functionality included in the Commerce Package with even more storage space.

222

In the Upware Market, where can a customer click to learn more about it?

Under getting started, click on Upware 101

223

What is EXCLUDED in the 30 day money back guarantee for Business Class Voice, Internet or TV?

Installation charges, fees, taxes or per-call charges

224

What website would a business class customer go to, to Manage their business WiFi hotspot directory information?

business.comcast.com/myaccount

225

What is the model number of the Business Wireless Gateway?

DPC3939B

226

Rings each user in the order they appear on the User List

Hunt Group

227

For assistance with non-emergency concerns or questions, Comcast Business Voice provides what service? (where available)

311 service

228

Comcast Business Voice provided this for users of the Telecommunications Relay Service (TRS) center for the hearing impaired.

711 abbreviated dialing

229

TRS

Telecommunications Relay Service

230

What information does Enhanced 911 provide?

The telephone number and location

231

What phone number can customers call with 911 related questions?

800-391-3000

232

What number should a customer dial to get the latest traffic information?

511

233

An easy-to-remember number that connects you to community services like after-school programs, health services, food banks and other essential human services.

211

234

Planning Assistance "call before you dig" number

811

235

Directory Assistance number

411

236

What is the name of Comcast's Paperless Billing?

Ecobill

237

What four social networks can a customer use to find information about Comcast Business class?

Linked-in, google plus, twitter, and facebook