Data Over Cable Service Interface Specification Quiz

Most cable modems, test generators, and set-top boxes (STB) have diagnostic pages.

Most leakage detectors, cable emulators, and return path testers have diagnostic pages.

Most cable modems, embedded multimedia terminal adapters (EMTA), and set-top boxes (STB) have diagnostic pages.

Most leakage detectors, cable emulators, and test generators have diagnostic pages.

At the coax interface on the node.

At the distribution amplifier.

The customer premises and the drop cable.

At the headend.

The Institute of Electrical and Electronics Engineers (IEEE).

The Society of Cable Telecommunications Engineers (SCTE).

The International Organization for Standardization (ISO).

The International Telecommunication Union (ITU).

Thin clients are not capable of running applications independent of the server. Thick clients are capable of downloading and running installed applications independent of a server.

Thin clients are small portable devices such as laptop computers and smart phones. Thick clients are stationary devices such as desktop and mainframe computers.

Thin clients will only work with one dedicated server. Thick clients will work with multiple servers simultaneously.

Thin clients are used for home applications such as game consoles or to download movies. Thick clients are used for business applications in computers.

The ground block.

The network interface card (NIC) in the customer's computer.

The cable modem.

The customer's wireless router.

Solutions need not accommodate features such as automatic attendant capability, teleconferencing, or caller ID.

Fulfills all but the most fundamental aspect of network management of integrating the transport of information cost-effectively.

Uses a variety of hardware and software products for voice digitization and compression that enable voice to be transported on public and private networks originally developed to transport data.

Is required to treat different data types exactly alike and must have high delay for voice telephony, megabit data streams for video, and high error rates for mission-critical data.

Ranging and automatic adjustment.

Characterizing.

Registration

Synchronization of data.

Rebooting the computer ensures that the modem provisioning software installed on the computer remains in place.

Rebooting the computer confirms that any changed settings are stored in the computer's memory and that the computer and modem continue to operate together after rebooting.

Rebooting the computer prevents the unintentional downloading of modem-specific features into the customer's computer.

Rebooting the computer ensures that the modem installation client is installed in the customer's computer.

STBs are always in communications with the headend. A non-responsive STB generates an e-mail alert.

STBs send a status message to the cable modem to let it know when it loses contact with the headend.

STBs are polled to see if they respond and a report is created. Non-responsive STBs can result in a significant loss of revenue.

STBs are polled by the EMTA periodically to see if they respond. Non-responsive SIGs are replaced.

A forward sweep from 54-860 MHz will deliver the most accurate alignment results.

A return sweep from 5-42 MHz will deliver the most accurate alignment results.

Injecting RF frequencies from 5-108 MHz at 6 MHz intervals will deliver the most accurate alignment results.

Injecting RF frequencies from 5-42 MHz at 6 MHz intervals will deliver the most accurate alignment results.

Overloaded input levels to a house amplifier that are reflected back to their source.

The use of splitters instead of directional couplers in the drop system.

Unpowered house amplifiers that reflect signals back to their source.

Loose or bad connections at the tap or unterminated splitter ports in the drop system.

Attenuation in the return path is primarily due to fiber-optic cable.

Attenuation in the return path is primarily due to the coaxial cable.

Attenuation in the return path is primarily due to the passive devices.

Attenuation in the return path is primarily due to the active devices.

38 Mbps.

152 Mbps.

108 Mbps.

76 Mbps.

At the directional coupler of the drop farthest away from the node.

At the return amplifier farthest away from the node.

At the node.

At the tap farthest away from the node.

Thermal noise is always present in a transmission path and is created by the temperature fluctuations of the laser in an optical node.

Thermal noise is microwave ingress in a transmission path and is caused by local public safety radio transmissions.

Thermal noise is intermittent in a transmission path and is caused by the occasional electrical switching device like a motor or transformer.

Thermal noise is caused by fluctuations in electron density within amplifier circuitry. As the signal passes through an amplifier, thermal noise is generated and added to the amplified signal.

Analog CDMA technology.

Analog TDMA technology.

Digital CDMA technology.

Digital FDMA technology.

And equipment include cellular phones, pagers, cordless phones, cordless laptops, palmtops, computer peripheral devices, home entertainment control systems, and other products.

Require a minimum bit rate of 10 kbps to satisfy intersystem matching between wireless and wired LANs.

Using wireless local area network technology can offer substantially higher data rates by increasing the size of the coverage area.

Using cordless and wireless local area network (WLAN) technology have higher mobility and higher cost than cellular systems.

Scanning for downstream carrier.

Ranging.

Obtaining an IP address.

Downloading configuration data.

It is evolving quickly and rather unpredictably as the products and services are changing.

It has no set of competing standards for communications protocols, interfaces, and networks.

It only uses visible light waves to carry a signal through atmospheric space rather than along a wire.

It has appeal because all frequencies do not require any form of licensing by the Federal Communications Commission.

CDMA spread spectrum technology separates users by assigning them digital codes within the available frequency.

CDMA makes it easy for hackers to grab orderly, meaningful data and does not ensure secure communications.

FDMA divides the frequency spectrum into time slots, and TDMA divides the frequency spectrum into frequency slots.

CDMA has the same capacity of TDMA but nearly 10 times that of FDMA.

Each station receives and then regenerates the token.

Network access is disorderly and response time is unpredictable.

If any station or node goes down, the entire network collapses only when bypass software is used.

When the addressed station receives the data, it cannot modify the packet's control field.

Two-way house amplifiers, window filters, or step attenuators.

High-pass filters, two-way house amplifiers, or step attenuators.

High-pass filters, window filters, or step attenuators.

High-pass filters, window filters, or two-way house amplifiers.

Using an unshielded twisted-pair (UTP) cable.

Using a flat silver-satin telephone cable.

Using a shielded twisted-pair (STP) cable.

Using the universal serial bus (USB) cable.

A ground fault detector can easily isolate the cause of cable telephony or HSD cable modem problems in the drop system.

A modem emulator function in a signal level meter (SLM) can aid in troubleshooting the cause of cable telephony or HSD cable modem problems in the drop system.

A digital multimeter (DMM) can easily isolate the cause of cable telephony or HSD cable modem problems in the drop system.

A return path tester can be used to easily isolate the cause of cable telephony or HSD cable modem problems in the drop system.

Are available in analog and digital system configurations, with analog configurations dominating the current products.

Must use line-of-sight for the transmit/receive antennas, which cannot be more than about 30 miles apart.

Are not affected by atmospheric conditions such as rain and humidity.

Using digital technology consist of four major components on both sides of the link: modem, RF unit, waveguide, and an antenna.

Ingress and noise from each drop is filtered at each common point, affecting only the signals from that drop's customer premises equipment (CPE).

Ingress and noise from each drop is carried independently over fiber to the headend where the noise is filtered out.

Ingress and noise from multiple drops along a service area funnels into a common point, affecting all signals from that service area.

Ingress and noise from multiple drops funnels into multiple points along the return path, affecting just the signals from the first service area.

Typically, every seventh cell uses the same set of frequencies.

Cells use an unlimited number of transmission frequencies.

The base station hands off the call to the mobile switching center in the next cell into which the user is traveling.

Two cells can use the same frequency for different conversations as long as the cells are adjacent to each other.

Defines the properties of an optical bit stream that specify the characteristics of optical fiber, which allow data to move across the medium.

Is based upon half the fundamental rate of 150 Mbps.

Is identical to synchronous digital hierarchy.

Cannot be installed over fiber because it was designed to operate over copper cable by ensuring interoperability.

Divides a 32-bit IP address into four 8-bit (1-byte) fields, with the value of each field specified as a decimal number.

Expresses IP addresses via the use of three-letter identifiers with "com" or "edu" endings separated by hyphens.

IP addresses can be translated into meaningful and easy-to-remember domain names through the use of an EDU server.

For Class A addresses sets the left-hand bit position in the first byte field to five.

ANSI/TIA/EIA-5708.

T568B.

T568A.

Universal Service Order Codes (USOC).

Impulse noise can be reduced by transmitting power on the distribution amplifiers.

Impulse noise can be reduced by tightening all connections and installing 75 Q terminators on unused tap ports.

Impulse noise can be reduced by locating taps and splitters close to switching power supplies.

Impulse noise can be reduced by tightening all connections and installing 10 dB attenuator pads on all used tap ports.

Layers four through seven (Transport Layer, Session Layer, Presentation Layer, and Application Layer) are applied between the DOCSIS modem and CMTS.

Layers one through four (Simple Network Management Protocol, Trivial File Transfer Protocol, Dynamic Host Configuration Protocol, and E-mail) are applied between the DOCSIS modem and CMTS.

Layers four through seven (Physical Layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS.

Layers one through four (Physical Layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS.

The drop cable loss is 3.2 dB plus 7.0 dB (the loss of a three-way splitter) plus 9 dB (DC loss), for a total of 19.2 dB in drop return path loss.

The drop cable loss is 3.2 dB minus 3.5 dB (the hot-leg loss of a three-way splitter) plus 9 dB (DC loss) for a total of 8.7 dB in drop return path loss.

The drop cable loss is 3.2 dB plus 3.5 dB (the hot-leg loss of a three-way splitter) plus 9 dB (DC loss), for a total of 15.7 dB in drop return path loss.

The drop cable loss is 3.2 dB plus 3.5 dB (the hot-leg loss of a three-way splitter) minus 9 dB (DC loss), for a total of -2.3dB in drop return path loss.

IP version 4 (IPv4), IP version 6 (IPv6), dynamic host configuration protocol (DHCP), and dual-stack mode (DPM).

IP version 4 (IPv4), IP version 6 (IPv6), alternate provisioning mode (APM), and dual-stack mode (DPM).

IP version 4 (IPv4), IP version 6 (IPv6), alternate provisioning mode (APM), and dynamic host configuration protocol (DHCP).

IP version 4 (IPv4), IP version 6 (IPv6), IP multicast, and dual-stack mode (DPM).

From the customer's computer to the throughput server that is connected to the cable modem termination system (CMTS) in the headend or hub.

From the customer's computer to a Web site server on the Internet.

From the customer's computer to a speed test Web site on the Internet.

From the customer's computer to a special cable modem located in the headend or hub.

Contains 42 translators, which are similar to transceivers, each a dedicated communications channel.

Has a translator that receives a signal from an earth station, amplifies the signal, changes its frequency, and then retransmits the signal back to Earth.

Operating at low earth orbit (LEO) is traveling at an elevation between 1,800 and 6,500 miles.

Operating at a geostationary orbit (GEO) is traveling above the equator at an altitude of 22,300 miles.

The system is described as a heavy-duty network because as the number of hosts increase, the share each gets of the total available bandwidth increases.

The 10BaseT supports a 100 Mbps transmission rate and uses a bus topology, which is implemented by a hub or wiring concentrator.

Gigabit Ethernet can operate over fiber-optic, CAT-5 UTP, and coaxial cabling, typically.

The 100BaseT standard does not support applications and networking software running on 10BaseT networks.

Maintain the privacy of communications mainly by encrypting and tunneling the data forwarded between sites.

Continue the connection between locations even after the transmission session is terminated.

Are characterized by connections that occur between point-to-point secure clients and are controlled by hardware and switching made prior to the connection.

Are static and maintain permanent links between the end-points that make up the corporate network.

Channel bonding combines the data throughput of a single channel with a number of channels to achieve a maximum data throughput equal to the cumulative total of the bonded channels.

Channel bonding ties the downstream and upstream RF data carriers to fixed frequencies so that the cable modem always knows what frequency to tune to receive downstream data.

Channel bonding combines the data throughput of up to eight adjacent data channels to create a single wide bandwidth data channel to achieve a maximum data throughput equal to the cumulative total of the bonded channels.

Channel bonding ties the downstream cable modem carrier to the out-of-band (00B) data carrier sent to the digital set-top box (STB) to enable the cable modem to receive television signals over the Internet.

The lower the bandwidth, the higher the data throughput, the higher the susceptibility to noise.

The higher the bandwidth, the higher the data throughput, the lower the susceptibility to noise.

The higher the bandwidth, the lower the data throughput, the higher the susceptibility to noise.

The higher the bandwidth, the higher the data throughput, the higher the susceptibility to noise.

The use of a step attenuator or a high-pass filter on the combiner at the headend will block any noise generated on the drop in the return frequencies from entering the leg.

The use of a step attenuator between the drop and the cable modem will block any noise generated on the drop in the return frequencies from entering the leg.

The use of a diplex filter at the ground block will block any noise generated on the drop in the return frequencies from entering the leg.

The use of a high-pass filter at the tap will block any noise generated on the drop in the return frequencies from entering the leg.

Channel bonding, IP version 6 (IPv6) support, and enhanced use of IP broadcast.

Channel bonding, IP version 6 (IPv6) support, and enhanced use of IP multicast.

Channel bonding, IP version 6 (IPv6) support, and best effort delivery of IP multicast.

Channel bonding, IP version 6 (IPv6) support, and exclusive quality of service (QoS).

Are more reliable than wired LANs; error rates are lower when compared with wired media.

Are regulated by the IEEE 802.11 standard, which defines some common features for connectivity on the 2.4 GHz licensed radio band.

Have the exact same physical medium as the wired media; both are shared and have limited point-to-point connection ranges.

Are flexible communications systems implemented as extensions to or as alternatives for the wired LANs in buildings or on campuses.

The BRI is appropriate for a business that utilizes a T-1 line, since it offers an economic alternative for connecting analog PBXs, LANs, and other devices to the network.

The BRI uses one "B" channel and 23 "D" channels, all at 128 kbps, yielding a 1.544 Mbps line.

The BRI is a "2B+D" interface, with two 64 kbps bearer ("B") channels that can carry voice, data or video, and one 16 kbps data ("D") channel that provides intelligent line management.

The phone company replaces the basic rate interface (BRI) circuit with a conventional analog circuit.

TCP/IP provides the basic protocol for directing data traffic over the Internet by dividing the data packet into four elements: the packet sequence; the data; the destination address; and the checksum of data.

TCP/IP provides the basic protocol for directing data traffic over the Internet by dividing the data packet into two elements: the data and the destination address.

SNMP provides the basic protocol for directing data traffic over the Internet by dividing the data packet into four elements: the packet sequence; the data; the destination address; and the checksum of data.

SNMP provides the basic protocol for directing data traffic over the Internet by dividing the data packet into two elements: the data and the destination address.

Replacing tap plates of 17 dB or less with higher value tap plates.

Installing high-pass filters on all unused tap ports.

Installing high-pass filters on tap ports that are 17 dB or less.

Installing terminators on all unused tap ports.

Dynamic host configuration provisioning (DHCP) and dual-stack provisioning mode (DPM).

Alternate provisioning mode (APM) and multistack provisioning mode (MPM).

Alternate provisioning mode (APM) and dual-stack provisioning mode (DPM).

Alternate provisioning mode (APM) and dynamic host configuration protocol (DHCP) mode.

Since 1969 exclusively has used a simplex mode of operation and manual call placement.

Uses a base station consisting of a transmitter, receiver, controller, and an antenna system and has a wired link to a mobile switching center (MSC).

Is any mobile communications network with a series of overlapping hexagonal cells in a honeycomb pattern.

Began with the advanced mobile phone service (AMPS) that was introduced in the United States in 1993.