Term
| 2. ____________ are all systems and capabilities necessary to mange, process, transport and use information as a resource in the organization |
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Definition
| C. Management Information Systems |
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Term
| 1. With a no right-of-permit required, _________ is great for building-to-building communications within a city |
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Definition
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Term
| 3. True or False: The military use of technology often precedes the commercial and personal application of it |
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Definition
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Term
| 4. A quantitative measure of the quality or fidelity of an analog voice signal is _______________ |
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Definition
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Term
| 5. What is MTBF/(MTBF + MTTR), where MTBF=Mean Time Between Failure; MMTR= Mean Time to Repair? _______________ |
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Definition
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Term
| 6. In the more detailed communications model, we may encode to _________________ (3) |
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Definition
A. Accommodate the limitations and characteristics of the channel
B. Provide security
C. Provide error detection and or correction |
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Term
| 7. True or false: The best way to maintain synchronization in digital telephone systems is to use the PBX’s own internal clock and not the incoming T1 trunk clock? |
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Definition
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Term
| 8. True or false: As a signal travels down a fiber optic cable it experiences attenuation? |
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Definition
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Term
| 9. Any unwanted signal or other source of electromagnetic energy, natural or man-made, which interferes with desired signal reception is known as _________________ |
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Definition
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Term
| 10. A method of in band signaling used by the telephone for providing addressing data to the receiving CO switch or PBX is _________ |
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Definition
| A. Dual Tone Multiple Frequency |
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Term
| 11. A __________ is a group of interrelated and interdependent parts working together to achieve a common goal |
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Definition
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Term
| 13. _________ stands for cycles per second or the number of repetitions that occur within a second of time. |
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Definition
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Term
| 14. True or false: Full DS0 throughput of 64Kb/s is not achievable with dial up modems because of the additional overhead required for signaling______________? |
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Definition
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Term
| 15. _____________ is a means for providing higher-quality communications on a channel or circuit by adjusting parameters, thus reducing noise. |
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Definition
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Term
| 16. Another name for a Class 4 office in the PSTN is a __________. |
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Definition
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Term
| 17. _________ is an example of a PBX feature in which the outgoing trunk selected is based on specific operational requirements |
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Definition
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Term
| 18. What is used to interconnect switching systems? ________________ |
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Definition
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Term
| 19. True or false: The voice digitization process within a switch allows for excess signal frequencies to be included in the voice band to accommodate equipment limitations, these frequencies form the guard band |
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Definition
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Term
| 20. True or false: Coaxial cable media is superior to all physical media used in telecommunications in the areas of attenuation and noise |
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Definition
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Term
| 21. True or false: Digital trunking is superior to analog trunking for long-distance telephony because digital trunks are less susceptible to noise degradation than analog? |
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Definition
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Term
| 22. A __________ line is a telephone service provider bulk pricing package for long distance service? |
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Definition
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Term
| 23. _______ services are PBX services offered by a common carrier |
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Definition
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Term
| 24. When launching light into a fiber optic cable, in order to get total internal reflection, one must be sure the angle of the light entering the cable is _______ _______ the critical angle |
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Definition
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Term
| 25. _________ circuits use light as the data carrier on a transparent media |
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Definition
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Term
| 26. In its simplest form, _________ is the technology in which a PBX routes a call based on the CallerID signal while accessing the caller’s digital file and linking that to the operator responding to the call. |
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Definition
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Term
| 27. POTS is a circuit switched technology, while ________ is a packet switched. |
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Definition
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Term
| 28. ______________ was the method used by the PSTN to carry voice conversations prior to the development of Time Division Multiplexing |
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Definition
| A. Frequency Division Multiplexing |
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Term
| 29. The main advantage(s) of Centrex versus installing a PBX within the customer premise is __________. |
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Definition
A. Smaller physical footprint
B. Lower initial investment
C. Lower operating costs |
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Term
| 30. When digital signals are sampled by decision circuitry within the PSTN, the ______ of the pulse is processed where ISI and noise effects are minimized |
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Definition
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Term
| 31. True or false: Fiber optic circuits are the easiest and least expensive to splice and/or patch.________ |
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Definition
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Term
| 32. True or False: In general, Broadband systems typically utilize an analog path that is frequency division multiplexed to create several channels.___________ |
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Definition
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Term
| 33. Fiber optic circuits use a ________ at the sending end of the signal path. |
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Definition
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Term
| 34. ___________ Communications employ signals in which the transmitted signal rate is much larger the information rate. |
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Definition
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Term
| 35. Satellite communications have mostly been abandoned in favor of terrestrial carriers for voice communications primarily because of _________. |
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Definition
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Term
| 36. True or false: 4G Cellular communications can provide data rates upwards of 100 Mb/s. |
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Definition
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Term
| 37. __________ is a fiber optic transmission technique that employs multiple light wavelengths to transmit data. |
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Definition
| A. Dense Wave Division Multiplexing(DWDM) |
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Term
| 38. True or false: HDTV can be in the analog or digital environment. _________ |
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Definition
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Term
| 39. Within Mobile Communication networks, the ________ provides the interface between the cell site and the PSTN |
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Definition
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Term
| 40. True or false: Cellular phones do not receive a dial tone from the PSTN, they generate it themselves internally._________ |
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Definition
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Term
| 41. Cellular telephony can provide a very large number of users with access to the network without running out of voice channels or network bandwidth because of __________ reuse |
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Definition
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Term
| 42. True or false: The environment of a system is that part which impacts or influences the system, but over which the system has minimal or no control._________ |
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Definition
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Term
| 43. The planning function of voice systems management supports three levels, which are Operational, Tactical and __________. |
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Definition
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Term
| 44. Security considerations within the telecommunications system realm takes into account the aspects of encryption, passwords, firewalls and _________. |
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Definition
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Term
| 45. With respect to the four objectives of user satisfaction in network management ________ is always the most critical and important |
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Definition
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Term
| 46. True or false: The useful lifespan of telecommunications equipment is increasing at an amazing rate._______ |
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Definition
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Term
| 47. Full satellite communications’ earth coverage can be achieved by using _______ satellites. |
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Definition
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Term
| 48. Satellites most commonly used for voice and data service are the _________ type, at 22,300 mile orbits. |
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Definition
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Term
| 49. Cellular telephony requires base station towers to be placed, on average, ________ apart. This will vary from urban to rural areas |
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Definition
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Term
| True or False: Initial Internet telephony had problems with reliability and fidelity due to limitations in bandwidth |
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Definition
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Term
| The three principal areas in which the IETF worked to improve network reliability and fidelity were Directory Services, Transport Protocols and ______ |
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Definition
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Term
| Reflection of the speaker’s voice when he/she speaks into the IP telephone handset or headset is known as ________ |
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Definition
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Term
| True or False: In order for VoIP to be viable it must offer or approach the Quality of Service customers are accustomed to on the PSTN |
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Definition
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Term
| The VoIP call control protocol known as a text based protocol used for establishing and controlling multimedia sessions between two or more endpoints is ______. (s21voip) |
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Definition
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Term
| __________ defines how to handle voice, data & video over regular telephony networks. |
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Definition
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Term
| ________ is the switch to switch signaling network used to connect and bill calls across the PSTN |
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Definition
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Term
| True or False: Traditional telephony isn't scalable like VoIP because it isn't software-driven like VoIP. |
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Definition
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Term
| A __________ picks up where a feasibility study leaves off and has a specific objective of providing a requirement specification as its output. |
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Definition
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Term
| Defined during the planning stages and refined throughout the life cycle of the system, the ________ reflects the technical strategy |
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Definition
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Term
| Defined during the planning stages and refined throughout the life cycle of the system, the ________ reflects the technical strategy |
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Definition
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Term
| As a set of mandates and guidelines from the top of the firm, ___________ is the specific guidelines for execution of a strategy |
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Definition
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Term
| In establishing a project, some sources of requests for projects are ___________. |
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Definition
Customers
b. Technology vendors
c. Governmental agencies |
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Term
| ___________ is defined as a diagrammatic technique employed to document the system in terms of users, data, and processing locations. (S20) |
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Definition
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Term
| In terms of the Cost Estimate Variance by SDLC Phase, which of the following has the greatest cost variance? ______ |
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Definition
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Term
| True or False : As a packet-switched or connectionless network, the Internet decreases the chances of packet loss for a voice call |
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Definition
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Term
| ITU’s H.320 standard defines the protocols for transporting voice, data and video over _______. |
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Definition
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Term
| In the H.323 protocol, __________ provides the actual voice media transport |
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Definition
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Term
| Cisco’s _________ is a proprietary protocol used between Cisco’s Call manager and Cisco IP Phones |
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Definition
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Term
| When an IP phone is not sending voice frames within an IP packet because the speaker is not talking, the silence suppression function causes the phone to generate ________. |
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Definition
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Term
| In the H.323 protocol, __________ provides the actual voice media transport control |
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Definition
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Term
| An example of a high compression codec from the list below would be _______. |
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Definition
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Term
| In the near term, the market segment expected to be the biggest driver for VoIP telephony is __________. |
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Definition
| e. Small office/home office(SOHO) customers |
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Term
| 24) The public Internet transports voice calls reliably and with high quality principally because ____________. 3 |
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Definition
a. Standards are established for differentiating and expediting voice payloads
b. Manufacturers produce higher-quality, lower cost audio codec technology
c. Various technologies deliver greater backbone-network and subscriber-access speeds |
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Term
| 25) The project team should be composed of members of groups who have a vested interest in the outcome of the project, known as ________. |
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Definition
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Term
| 26) True or False: SIP is modeled after the TCP/IP Simple Mail Transfer Protocol (SMTP) and HTTP operating at the OSI application layer |
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Definition
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Term
| 27) RTP has no mechanisms for ensuring on time delivery of packets so ________ is ratified and implemented in routers to establish requested transmission paths and QoS |
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Definition
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Term
| 28) The __________ ensures packet hasn’t been altered in any way during transmission, verifying identity of the sender |
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Definition
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Term
| 29) In order to provide improved voice quality in IP Telephony, voice endpoints, gateways or both may employ a _________ to smooth out packets arriving at different rates potentially due to network congestion |
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Definition
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Term
| 30) H.323 includes the G.711 codec and the _____ audio codec operating at 7.9 kb/s |
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Definition
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Term
| 31) True or False: RTCP provides in band control information for RTP traffic |
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Definition
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Term
| 33) The __________ is a subjective measure of quality and fidelity of a voice codec as determined by skilled, trained human listeners |
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Definition
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Term
| 34) The___________ is a part of the IPSec protocol that follows the IP header or Authentication Header and encrypts the actual payload data. |
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Definition
| a. Encapsulating Security Protocol |
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Term
| 35) True or False: G.711 uses one of two digitizing scales: mu law or A-law (mu law is the US standard, each requires 32 kb/s) |
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Definition
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Term
| 36) The _________, as part of the CPE, provides the separation of the incoming T1 data stream into data networking and voice networking components |
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Definition
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Term
| 38) The line encoding format of the T1 carrier for maintaining bit sync is known as _______. |
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Definition
| a. Binary Eight w/ Zero Substitution |
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Term
| 39) The T1 Specification mandates a certain pulse density on the line so both ends of carrier stay synchronized. One of those requirements is that there be an overall 1’s density ______ %. |
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Definition
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Term
| True or False: Robbed bit signaling is an example of in-band signaling used on the T1 carrier |
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Definition
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