Broadband Digital Installer Practice Test

These questions are part of the practice quiz. Start practicing

• How is the star topology configured in a telecommunications system?
• What internet protocol (IP) connectivity modes are supported in DOCSIS 3.0 and 3.1?
• What information is used to establish an EMTA identity with the CMTS?
• What message does the DOCSIS 3.1 modem send after synchronization to the CMTS?
• How does a DOCSIS modem determine the frequency for upstream data transmission?
• What might homeowners need to confirm with their security company before switching to VoIP?
• What components are included in a distribution device for residential modular jacks?
• What is the purpose of checking the existing cable television service during an installation?
• After mounting and wiring a new modular telephone jack in a star installation, where should the UTP cable from the new modular jack be connected?
• How do cable operators prevent unauthorized reception of digital television (DTV) services?
• Which DOCSIS version was the first to allow an increase in the top frequency of the upstream spectrum to 85 MHz?
• What key parameter is adjusted for service levels by implementing device class identification (DCI)?
• What happens during the initialization process of a DOCSIS modem?
• Besides playing back discs, what functionality do many Blu-ray players have?
• Which device represents the next evolutionary step for set-top boxes (STB)?
• Why is packet-switching technology considered to be more efficient than circuit switching technology?
• Which of the following home automation platforms does not support Wi-Fi devices?
• During a cable telephone installation with a monitored alarm system, an EMTA must connect to which component first?
• Which devices are commonly affected when switching to VoIP telephony?
• What enhancements in DOCSIS allowed broadband cable operators to compete with traditional telephone companies?
• What is the main advantage of delivering PacketCable voice packets over a managed IP backbone?
• What is typically required for installing a router in a customer’s setup?
• What is the first step in prequalifying a new customer's telephony service?
• What is the placement of pair 1 in relation to the pin configuration of a twisted-pair cable?
• What is an important consideration when choosing an installation location for an EMTA?
• Which communication method allows devices to share power through the same electrical wiring as data?
• What differentiates a wide area network (WAN) from a local area network (LAN)?
• Who were the original target customers for digital terminal adapters (DTA)?
• Power line carrier technology is communicated over which of the following mediums?
• The best way to prevent equipment incompatibility between a VoIP installation and home security system starts with?
• What is the primary purpose of long-loop automatic gain control (AGC) in a DOCSIS network?
• What device enables internet access for two or more devices in a customer’s premises?
• What is the effect of connecting a tip wire to a ring pin?
• If the customer requests router setup during installation, what should the technician do?
• What does DOCSIS 3.1 seek first when synchronizing with the CMTS to receive operational information?
• What should be checked on digital television channels if a customer is adding high-speed data service?
• When verifying installation locations, what aspect should also be considered?
• Which equipment is critical for establishing a local area network?
• What feature was introduced in DOCSIS 1.1 to manage quality of service (QoS)?
• What information is typically stored in a signal level meter's (SLM) channel plan?
• What protocol is commonly associated with voice over Internet protocol for its speed?
• What information does a DOCSIS 3.1 modem provide in its Bonded Initial Ranging Request (B-INIT-RNG-REQ) message to the CMTS?
• How can a wide area network (WAN) best be described?
• What feature was added in DOCSIS 3.0 besides channel bonding?
• What access technology does DOCSIS 1.0 use for sending data upstream?
• To effectively troubleshoot issues with existing wiring, what should the technician primarily focus on?
• When installing a new IDC jack at the customer premises, why is it important to ensure that the wire pairs are untwisted a maximum of 1/2 inch?
• From where do DOCSIS modems receive their configuration files and messages?
• For an alarm system to function properly after a VoIP installation, where should the twisted-pair wires from the EMTA be connected?
• What does the embedded multimedia terminal adapter (EMTA) in a DOCSIS network include?
• When drilling a hole through an exterior wall to route a telephone cable to the interior, how should the hole be drilled?
• What is the main advantage of packet switching over circuit switching?
• What major obstacles hindered early acceptance of Internet Phone technology by VocalTec Inc.?
• What is the primary role of a provisioning server in relation to a DOCSIS modem?
• What practical limitation was associated with the integrated entertainment system cabinet?
• What type of message must a cable modem receive to establish a transmission relationship with the network?
• Which measures are used to assess voice quality in the PacketCable managed IP network?
• What technology allows digital set-top boxes (STB) to receive authorization for encrypted content?
• During the installation process, what is a helpful resource for an internet novice?
• If a customer demonstrates that they are internet savvy, what should be the next step in the customer education portion of the installation?
• Which of the following is a key feature of Bluetooth?
• What must a DOCSIS® cable modem find in a downstream carrier to synchronize to the CMTS?
• Which type of modular telephone line cord is preferable for installation?
• What is an indicator that may help troubleshoot modem issues?
• Why are the data throughput rates for both downstream and upstream in DOCSIS networks asymmetrical?
• What is a key step in avoiding problems during VoIP installation?
• How are the pins on a modular jack typically numbered?
• What is a requirement for carrier class VoIP telephone service?
• What must be done to a digital television set connected directly to the broadband cable network to store channel information?
• What is the main advantage of using the dynamic host configuration protocol (DHCP) server?
• What is a cable modem service group defined as?
• What items are essential to simplify cable modem and router installation in a utility room?
• What was a significant barrier to the early adoption of VoIP applications?
• Which type of twisted-pair inside wiring installation tool accommodates the varying surface shapes of unshielded twisted-pair cables?
• What role does the CMTS play in relation to a DOCSIS modem?
• How should a technician check for crosstalk in a multiline telephone installation?
• Why must an EMTA have an internal battery installed?
• Which wiring topology starts at the telephone distribution device and uses twisted-pair cable to route through a customer premises?
• Which organization approved the first version of DOCSIS as an international standard?
• What might happen if a customer's network has a data throughput of 6 megabits per second while streaming three HD TV data streams of 12 Mbps each?
• What does the customer access side of the NID mark in a network?
• What could happen to a modem's upstream transmit level if the drop attenuation level changes?
• What does an internal battery provide for an EMTA during outages?
• What occurs as a result of a high data demand exceeding network capacity?
• Which version of the IEEE 802.11 specification was the first widely accepted wireless standard branded as Wi-Fi?
• At what point does a DOCSIS modem secure authorization for high-speed data (HSD) service?
• Which protocol primarily uses the powerline system within customer premises to communicate with connected devices?
• How does a DOCSIS modem receive its internet protocol (IP) address?
• During which stage does the dial tone generation specifically differ between traditional and PacketCable systems?
• Which protocol is utilized to download configuration files to DOCSIS modems?
• What functionality has been added to many signal level meters (SLM) to measure specific parameters of a digital modulation carrier?
• A cable gateway can replace which broadband cable operator-supplied devices?
• What enhancements were made in DOCSIS 1.1 to support PacketCable?
• What function does the RJ31X jack serve in an alarm system?
• What is a potential sign of noise or interference in downstream channels?
• What is a critical issue for VoIP customers with home security systems regarding power?
• What type of installation is critical for ensuring VoIP and alarm systems operate effectively?
• How much insulation should be stripped from each individual copper conductor when installing a modular telephone jack?
• Which operational parameters are contained within a modem's configuration file?
• What is required for an EMTA to receive an authorization key for telephone service?
• What component provides the supervisory voltage to a customer's telephone in the PacketCable VoIP system?
• When would a Digital Transport Adapter (DTA) typically be installed in customer premises?
• Out of the 40 channels that Bluetooth Low Energy works within the 2.4 GHz spectrum, how many of those channels are advertising channels?
• What are the consequences of using standard user datagram protocol (UDP) for VoIP telephone calls?
• How can delays caused by low upstream data throughput affect downstream data delivery?
• Why is it important to inform customers about devices connected to the POTS line?
• Which server is responsible for providing a cable modem with its IP address?
• What is the purpose of device class identification (DCI) in a modem?
• What occurs if a DOCSIS modem fails to establish time-of-day (ToD) registration?
• What suggestion should you give a new customer regarding their email login ID and password?
• How can the installation of VoIP impact alarm systems specifically?
• What technology does DOCSIS 3.1 utilize to increase data throughput?
• What does VoIP packets using UDP experience during transmission?
• Which feature allowed for guaranteed minimum throughput data rates in DOCSIS 1.1?
• What is one main advantage of using Insteon over other protocols?
• Which function does the brown and grey terminal serve in an RJ31X jack setup?
• What is required for a cable modem to be certified as a DOCSIS modem?
• What is the minimum separation distance you should maintain between any telecommunications or data cable and electrical power conductors?
• When diagnosing or qualifying a digital TV (DTV) service, which parameters are crucial to measure?
• What is the most common alternative to circuit switching technology used in telecommunications?
• Where is the telephone company interface generally located in a single-family residence?
• What is the primary benefit of using a home media server?
• When scanning an OFDM channel, what does the DOCSIS 3.1 modem seek for synchronization?
• How might customers accidentally exceed their data usage limits set by some cable operators?
• Which of the following platforms utilize iControl services?
• What essential information should customers retain when setting up an email account for the first time?
• Which three networks are included in the PacketCable 1.0 architecture?
• What is crucial for the successful installation of a modem in terms of space?
• What type of cable is defined as a CM cable?
• What could happen if the EMTA is connected incorrectly during installation?
• What is the last step in a cable modem's registration process?
• Why should an already installed cable service drop be inspected during any service call?
• What is one operation to check after adding a new modular telephone jack?
• A network attached storage element should connect to which device in a home media network?
• Why might a customer benefit from familiarizing themselves with their cable operator's FAQ page?
• What is a characteristic of plain old telephone service (POTS)?
• What is the purpose of ZigBee routers in a network?
• Why is packet switching considered more efficient than circuit switching technology?
• Why is it essential to review the service work order with the customer before installation?
• What is a key benefit of saving your company's website to a novice customer's home page?
• What technology underlies plain old telephone service (POTS)?
• Which standards were developed during the construction of the digital public switched telephone network (PSTN)?
• What technologies were introduced in DOCSIS 2.0 for improved upstream bandwidth?
• In what situation would a DOCSIS modem need to re-initialize?
• What advantage do automated measurements provide when using an SLM?
• What security feature was introduced in DOCSIS 1.1 to combat modem cloning?
• When does the initialization process of a DOCSIS modem begin?
• What type of communication is established for Level III VoIP service between two computers?
• Which type of cable technology is essential for broadband Internet service?
• What is typically connected to the cable modem to allow multiple computers to access the Internet?
• Which protocol is backward compatible with X10 while expanding home automation to include wireless communication?
• Using a digital signal analyzer, which measurements are typically taken to troubleshoot a digital television signal?
• What role does a digital media renderer play in a home network?
• What might a CMTS adjust in a RNG-RSP message regarding a modem's transmission parameters?
• When choosing the installation location for a cable modem, what should be prioritized?
• What component must a home network printer have for network operation?
• What could be a consequence of stacking components on top of processor-intensive devices like an STB?
• How is generating a dial tone similar in traditional and PacketCable systems?
• Which tier enables a cable operator to deliver reliable VoIP service comparable to traditional phone services?
• What technology is the standard method for converting analog telephone calls into digital data?
• What features were introduced with the 3.1 version of DOCSIS to increase data throughput?
• Which protocol is best for exchanging data over short distances?
• Which message is essential for a modem to successfully initiate its operation within the network?
• What is a risk of performing automated measurements on a sample of channels?
• What recommendations are included in the Data Over Cable Service Interface Specification (DOCSIS) besides being an equipment standard?
• Which layers of the OSI reference model are applied between DOCSIS modems and the CMTS?
• What should be done if a modem indicates poor signal strength?
• What main feature distinguishes a Lossless Compression from a Lossy Compression?
• Which of the following is an open source protocol that utilizes mesh networking to relay commands to connected devices within the customer premise?
• If an RJ31X jack is improperly wired, what happens during an alarm condition?
• What is a major advantage of using DOCSIS 3.1 over previous versions?
• What characterizes a constant bit rate (CBR) telephone system?
• What should a skilled VoIP installation technician inquire about to prevent device issues?
• Before installing VoIP telephony, what should homeowners do regarding their alarm system?
• What do entertainment cabinets with doors made of green glass block?
• What differentiates PacketCable VoIP from other VoIP services?
• What simplifies the installation if the customer wants the cable modem installed in a closet or utility room?
• What type of architecture was originally supported by DOCSIS 1.0?
• What are the primary components of the DOCSIS architecture?
• Where is the embedded multimedia terminal adapter (EMTA) located in the PacketCable architecture?
• What type of network does ZigBee primarily create?
• What happens if a DOCSIS modem is unable to acquire the current time and date from time-of-day (TOD) servers?
• What determines how many days of TV program schedules can be stored on a digital set-top box?
• What advantage does twisted-pair wire have over quad station wire?
• What is the primary function of a router in a home media network?
• Where should customers look for information before contacting customer service?
• What is the significance of the green and red terminals in the RJ31X jack?
• Which version of DOCSIS allows for an increased upstream frequency of up to 85 MHz?
• What is a direct consequence of having devices that are incompatible with VoIP?
• What does the abbreviation MAC stand for in the context of modem security?
• What is the function of a cable modem termination system (CMTS) in DOCSIS?
• In the event of a power failure, what backup power source can an EMTA rely on?
• What is the maximum data rate of an 802.11b network?
• What is the upstream frequency bandwidth if four DOCSIS 3.0 carriers of maximum bandwidth are bonded?
• Why did DVD players/recorders replace VCRs in entertainment systems?
• What competitive service do broadband cable operators view TV Everywhere as a solution for?
• Which OSI reference model layers does the MAC layer in DOCSIS overlap?
• What trend are desktop computers increasingly following in home networks?
• What does the DOCSIS certification process ensure?
• Which characteristic of WANs differentiates them from LANs?
• What components are found in the craft access area of the NID?
• What is essential for ensuring the performance of a cable modem installation?
• Which layers of the OSI model are present in the DOCSIS implementation?
• What should a technician verify before installing telephone service?
• How do CAT-1, 2, and 3 cables differ from CAT-5e and higher cables?
• Why is constant bit rate (CBR) telephony classified as a circuit switching technology?
• How many home network device categories have been identified by the DLNA?
• To correctly use the RJ31X jack, how must the wiring be terminated?
• What distinguishes a cable modem from a wireless gateway?
• Why is device class identification (DCI) activated during a DOCSIS modem's initialization?
• What should be checked to certify the reliability of the drop system?
• What advancements forced customers to choose between integrated entertainment system furniture and upgraded system components?