CT4/5 Inkling(IS 2018) Flashcards
what is the address for the Comcast Business Gateway Login?
http://10.1.10.1
Connects to the combiner in the filter for local insertion of subscription channel
DCT
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
What number should a customer dial to get the latest traffic information?
511
How long must leakage logs be kept on file?
2 years Per FCC, Comcast keeps 5 years
This inspects the master boot record, program files, and macro code for the presence of viruses.
Antivirus software
This is the protection of content by requiring certain criteria to be met before granting access to this content.
CA or Conditional Access
These are low value taps that feed the internal splitter(s) directly without the use of a directional coupler
Terminating tap
A portion of a network that shares a common address component..
Subnet
What is the customer default username for on the Comcast Business Gateway?
cusadmin
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
This is the medium that is used to transmit our signals from the headend to the customer.
coaxial cable
This address (the highest in value)- identifies all hosts/devices on the LAN.
Broadcast IP
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)
The Large Plug on an 8 line eMTA that connects to the power supply.
Telemetry
What is the wiring pattern for a 66 Block- Telco standard connecting block?
a. Lines in from the left and out to the right
b. lead with “Tip” at the top
c. Alternate “Tip” and “Ring”
d. Leave 1-3 feet of excess wire around block
5 steps to minimize anxiety
- 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
A utility to determine whether aspecific IP address is accessible. Itsends a packet to the specifiedaddress and waits for a reply.
Ping
(the lowest in value) this IP address encompasses the entire subnetwork.
Network IP
What is occurring when all theFront Panel LEDs are flashing?
Foreign voltage present on oneor more lines (or self-testwhen starting up)
What wireless adapter is credit-card sized wireless adapter that slides into the side of a laptop or desktop?
PC (PCMCIA) Card
Internet streaming, video on cell phones and interactive tv are examples of what MPEG application?
MPEG-4
Comcast Business Voice provided this for users of the Telecommunications Relay Service (TRS) center for the hearing impaired.
711 abbreviated dialing
A protocol used on the Internet for exchanging files
FTP
This is a measure of signal strength relative to background noise in analog and digital communications.q
Signal-to-noise ratio
What website would a business class customer go to, to Manage their business WiFi hotspot directory information?
business.comcast.com/myaccount
This enables a LAN to use one set of IP addresses for internal traffic and a second set of addresses for external traffic, and provides a type of firewall by hiding internal IP addresses.
(NAT) Network Address Translation
It’s used to avoid kinks and sharp bends on telecom equipment boards
Mushroom Spool
MSO
Multi system Operator
“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)
10.0.0.0 is an example of a _______ address.
Private IP
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
1.Allows a group of phone stations to access a common set of phone lines. 2.Fewer business lines can be purchased. 3.Additional built in features such as music on hold and call transfer
What are benefits of a Key System (PBX)
For normal CATV modulation modes, the nominal acceptable C/N for reliable operation for 16QAM is
20dB
Name 3 of the 5 traits of Auditory Learners
- Learn by listening2. Prefer discussion groups3. Pay close attention to voice4. Like information to be read aloud5. Like to ask questions and paraphrase
Loads baseband signal onto standard video channel carrier. Can eliminate the need for multiple DCT’s.
Video Modulator
Device that connects the customer’sinternal network to the Internet. Wirelesscapability may be denoted by antennae on the device
Router
In its simplest form, it is an electronic message sent from one device to another.
What is the major advantage of MPEG compared to other codecs?
The MPEG files are much smaller for the same quality
At what interval is CLI monitored?
Quarterly
This is a variant of spyware that displays advertising for products it thinks might interest you, based on the website you are browsing.
Adware
PBX
Private Branch Exchange
The Six Key Techniques to Selling
- Build rapport2. Ask questions3. Listen4. Position the product5. Communicate the benefits6. Ask for the sale
a system of computers,peripherals, terminals, and databases connected by communications lines
Network
A MPEG video is a sequence of what three kinds of encoded pictures?
I pictures, P pictures, and B pictures
It is the concept of partitioning large networks into smaller segments.
Subnetworking, or subnetting
This is the cidr for customers with five Static IPs
/29
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)
At what point in the installation process can a customer register an account online?
As soon as installation is scheduled.
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
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
Device that acts as a focal point inconnecting multiple computers within oneLocal Area Network (LAN).
Switch
This is the cidr for customers with 1 Static IP
/30
For assistance with non-emergency concerns or questions, Comcast Business Voice provides what service? (where available)
311 service
Planning Assistance “call before you dig” number
811
What is the most common cause of signal leakage?
poorly installed F-connectors in the drop
A technique by which several hosts or computers share a single IP address for access to the Internet.
(NAT) Network Address Translation
It uses internal modem to transmit sales transaction data using telephone lines.
P.o.S. (Point of Sale System)
Directory Assistance number
411
software/hardware used to preventunauthorized access from a computer system or network ofcomputer systems
Firewall
The /28 subnet mask is
255.255.255.240
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
What 2 ways can a CLI test be performed?
ground based or an aerial “flyover”
Four components of coaxial cable
Jacket, Outer Conductor (Sheath), Dielectric, and Center Conductor
A unique number for each computer on a given network
IP Address
the IP address that the gateway uses toforward all traffic that is not addressed to a client within Comcast’s network.
Default Gateway
A term used to describe a range of malicious software example is external code that changes your browser’s settings.
Hijacking
A mathematical value derived from the number and severity of leaks in the cable system.
Cumulative Leakage Index (CLI)
On TCP/IP networks, they are defined as all devices whose IP addresses have the same prefix
subnets
Name 3 of the 5 traits of Visual Learners
- Learn through seeing2. Prefer to see the person speaking to them3. Think in pictures4. Like demonstrations and examples5. Take detailed notes
Customers can automatically distribute incoming calls to two or more extensions using which call feature?
Hunt Groups
This feature is commonly used forgaming and videoconferencing –applications that will not functionthrough NAT.
DMZ (demilitarized zone)
For normal CATV modulation modes, the nominal acceptable C/N for reliable operation for 64QAM is
31dB
Provides the ability to dynamically open a specific inboundport based on a request from a local computer or user.
Port Triggering
This type of IP address is visible to the public
routable
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
In BCDV, it’s the interface between the eMTA and the 66/110 block demarc point
RJ-21X
A temporary IP address is also called a(n) _________ IP address.
dynamic
This IP address is used on customer’s equipment.
Routable IP
What is the best way to prevent a hacker from accessing a customer’s system?
A hardware firewall
Digital QAM signals carry 2 signals that are referred to as what?
I and Q components
A group of computersgeographically far apart, but areconnected.
WAN
Uses a public network, such as the internet, to establish a secure connection to an organization’s private network
VPN
If Tel 7 is flashing slowly on an 8 line eMTA, about 1 flash per second, what does that indicate?
Line card Error
This appears as a horizontal bar moving from the bottom to the top of the picture
Hum Modulation
What phone number can customers call with 911 related questions?
800-391-3000
DPC3939B or DPC3941B
Model Number for the Business Wireless Gateway
This feature is commonly used on publicly connected hosts to make an internal service available to a larger network.
(PAT) Port Address Translation
What is the measurement of how consistent the signal response is from the beginning to the end of the channel space?
ICFR
DTCP
Digital Transmission Content Protection
Being able to carry and individually select different channels on a single cable by their unique frequency is called….
frequency division multiplexing (FDM)
What is the MTTR for Business Class Voice customers?
4 hours
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)
What is the technician default username on the Comcast Business Gateway?
mso
This device passes high frequencies well, but attenuates (or reduces) frequencies lower than the cut-off frequency..
High Pass Filter
Internet service that locates and translates domain names into IP addresses
DNS
Defined as a condition where interfering signals leak into a cable network.
Ingress
Good eye control serves what 2 purposes?
- It tells the listener something about you2. It allows you to learn something about the listener
Look at this IP address. 150.215.017.009What do the first two numbers (150.215) represent?
They define the network
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
An IP address that does not change.
static IP address
How many IP Addresses does a /28 Subnet use?
16
What tool can locate impedance mismatches or microreflections on the network by using adaptive equalization and complex math?
Scout Flux
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
A descriptive name for an address or group of addresses on the internet
Domain Name
How often does a cable modem communicate system information to the CMTS?
Every 20 seconds
Video CDs are an example of what type of MPEG application?
MPEG-1
Similar to a 66 block, but provides less interference and is also certified fordata networks
110 Punch Down Connecting Block
A location for passing data in and out of your computer
port
What are the four components of the human voice?
- Rate2. Volume3. Force4. Pitch
Enables you to restrict specific local hosts fromaccessing particular Internet applications
Port Blocking
Equipment from a Telephone Company, providing internet access to the customer
DSL Modem
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
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)
What is the color sequence for the Telemetry Plug on an 8 line eMTA?
White-Brown-Blue-Orange-Green
How many ports are represented on a hexagonal tap symbol.
8
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
It defines a cryptographic protocol for protecting audio/video entertainment content from illegal copying, intercepting and tampering.
DTCP
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
This type of firewall rule compares key parts of each packet to a database of known safe data.
Stateful packet Inspection
What calling feature allows different phone numbers to reach the same phone line with different ring patterns?
Distinctive Ring
The /29 Subnet uses how many IP addresses?
8
Where can customers go to learn about the Comcast Business Promise?
business.comcast.com/promise
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
What is the limit for ingress between 5 and 42 MHz?
-30 dBmV
This is the LEC network interfacethat supplies 1.544Mb/Sec symmetricaldata throughput.
T1
It can be defined as sending unsolicited bulk email.
spamming
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
the ratio of the error power to the average power in an ideal QAM signal
Modulation Error Ratio (MER)
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
How many IP addresses are in a /30 subnet mask?
4
DVD and CATV are examples of what type of MPEG application?
MPEG-2
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.)
In regard to Comcast Business Voice, a serviceability check will consist of what two components?
- Serviceability of the location2. E911 serviceability
A geographically close set of computers connected on a single network and using the same communication device
LAN
This device enables operators to deliver 8 lines of telephony, tiered data and other advanced Internet Protocol services
eMTA
This allows users to privately share information over public communication
VPN / Virtual Private Network
The /29 subnet mask is
255.255.255.248
A device or software that enables compression and or decompression for digital video
video codec
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
Name 3 of the 5 Traits of Tactile Learners
- 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
This is the cidr for customers with 13 Static IPs
/28
What are the two types of distortion?
Linear and Non-Linear
What information does Enhanced 911 provide?
The telephone number and location
TTS
Trouble Ticketing System
For normal CATV modulation modes, the nominal acceptable C/N for reliable operation for 256QAM is
38dB
For normal CATV modulation modes, the nominal acceptable C/N for reliable operation for QPSK is
12dB
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
TRS
Telecommunications Relay Service
How do you know if one of the telephone lines is off the hook?
The LED of the telephone line is flashing
ATS
Advanced Technical Services
The customer must have a Comcast issued IP Gateway to receive this type of IP address
static
These are an undesired change in the waveform of a signal.
Distortions
Internet Phone services transmit phone calls over a
public network
How many ports are represented on a circular tap symbol?
2
How often is a CLI test performed?
Annually
FCC regulations requires a CLI figure of merit of what number?
64 or less
How many ports are represented on a square tap symbol?
4
What is the name of Comcast’s Paperless Billing?
Ecobill
What is the model number of the Business Wireless Gateway?
DPC3939B or DPC3941B
This allows a selected computer tobypass the firewall features of thegateway and permits unrestrictedaccess from the Internet to thatcomputer
DMZ (demilitarized zone)
The /30 subnet mask is
255.255.255.252
A phase modulation algorithm that is a digital modulation scheme wherein the carrier is shifted in 90-degree steps
Quadrature Phase Shift Keying (QPSK)
ACP
Analog Copying and Piracy
