This is the Miscellaneous Multiples Choice Questions Part 10 of the Series in Communications Engineering. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in Communications Engineering field (Electronics Systems and Technologies). In the actual board, you have to answer 100 items in Electronic Systems and Technologies within 5 hours. You have to get at least 70% to pass the subject. Electronic Systems and Technologies is 30% of the total 100% Board Rating along with Mathematics (20%), General Engineering and Applied Sciences (20%) and Electronics Engineering (30%).
Practice Exam Test Questions
Following is the list of multiple choice questions in this brand new series:
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Choose the letter of the best answer in each questions.
451. What is the operating frequency of Wibro?
- A. 2.1 GHz
- B. 2.3 GHz
- C. 2.2 GHz
- D. 2.4 GHz
452. What is the base station data throughout for Wibro?
- A. 30 to 50 Mbps
- B. 40 to 60 Mbps
- C. 50 to 70 Mbps
- D. 60 to 80 Mbps
453. The maximum radius for Wibro is ____.
- A. 2 km
- B. 3 km
- C. 4 km
- D. 5 km
454. _____ is a published specification set of high level communication protocols designed to use small, low-power digital radios based on the IEEE 802.15.4 standard for wireless personal area networks.
- A. bluetooth
- B. wpan
- C. zigbee
- D. wlan
455. In a Zigbee network, a single device that controls the network is called _____.
- A. master
- B. server
- C. coordinator
- D. pointer
456. Devices being controlled in a zigbee network are known as _____.
- A. end devices
- B. clients
- C. slaves
- D. beggars
457. The modulation scheme used by IEEE 802.11b
- A. OFDM
- B. CCK
- C. QPSK
- D. FDM
458. The modulation scheme used by IEEE 802.11a
- A. OFDM
- B. CCK
- C. QPSK
- D. FDM
459. The World Wide Web or WWW was invented in the year _____.
- A. 1991
- B. 1990
- C. 1989
- D. 1995
460. He invented the World Wide Web or WWW
- A. Karel Capek
- B. Tim Berners-Lee
- C. Jon Von Neumann
- D. Bill Gates
461. The number of satellites used by GLONASS
- A. 30
- B. 26
- C. 24
- D. 31
462. A 3G technology that delivers broadband-like data speeds to mobile devices.
- A. EDGE
- B. HSCSD
- C. VOIP
- D. 3GSM
463. ADSL has maximum distance of _____.
- A. 16,000 feet
- B. 8,000 feet
- C. 18,000 feet
- D. 12,000 feet
464. ______ is an implementation of ADSL that automatically adjusts the connection speed to adjust for the quality of the telephone line.
- A. ADSL
- B. SDSL
- C. RADSL
- D. HDSL
465. A type of DSL that was developed to support exceptionally high-bandwidth applications such as High-Definition Television (HDTV).
- A. VDSL
- B. SDSL
- C. ADSL
- D. XDSL
466. A method for moving data over regular phone lines which is much faster than a regular phone connection and the wires coming into the subscriber’s premises are the same copper wires used for regular phone service.
- A. VOIP
- B. DSL
- C. Cable Internet
- D. POTS
467. What is the IEEE designation for Bluetooth?
- A. 802.15
- B. 802.14
- C. 802.10
- D. 802.16
468. The IEEE designation for wireless LAN
- A. 802.12
- B. 802.13
- C. 802.5
- D. 802.11
469. The IEEE designation for broadband wireless network
- A. 802.16
- B. 802.15
- C. 802.14
- D. 802.13
470. The file extension for jpeg
- A. .jpg
- B. .jpe
- C. .jfif
- D. any of these
471. In SMS, the number of characters being sent in the network is _____ when Latin alphabet is used.
- A. 80
- B. 160
- C. 65
- D. 100
472. In SMS, the number of characters being sent in the network is _____ when non-Latin alphabet is used.
- A. 50
- B. 60
- C. 70
- D. 80
473. It is an enhancement of data services of all current GSM networks, it allows you to access nonvoice services at 3 times faster
- A. GPRS
- B. HSCSD
- C. VOIP
- D. 3GSM
474. A language derived from HTML especially for wireless network characteristics.
- A. Delphi
- B. PHP
- C. Pearl
- D. WML
475. The founding father of the Internet
- A. Tim Burners-Lee
- B. Vinton Gray Cerf
- C. Jon Von Neumann
- D. Carel Kapek
476. What term is used by in asynchronous transfer mode (ATM) system to describe a byte?
- A. harmonic
- B. octet
- C. actave
- D. bit
477. The relative permittivity of silicon is _____
- A. 11.7
- B. 1.17
- C. 1.18
- D. 11.8
478. One of the following is NOT classified as a Customer Premises Equipment (CPE) by the NTC.
- A. Automatic Teller Machine
- B. Videophone Terminal Equipment
- C. VSAT
- D. ISDN Terminal Equipment
479. Zigbee network layer supports the following topologies except:
- A. tree
- B. bus
- C. star
- D. mesh
480. An Internet Messaging service can be either _____.
- A. user-based or company based
- B. sender-based or receiver based
- C. network-based or device-based
- D. feature-based or attachment-based
481. The level of ____ within an IM program brings up the issue of privacy.
- A. users signed up
- B. advertising
- C. technology
- D. presence awareness
482. One reason behind the success of the Internet is the fact that it is built on _____.
- A. open standard
- B. user trust
- C. safe architecture
- D. solid ground
483. Which of the following is not an additional revenue opportunity offered by advance messaging services?
- A. electronic commerce
- B. advertising
- C. targeted marketing
- D. taxes
484. ADSL increases existing twisted-pair access capacity by _____.
- A. twofold
- B. threefold
- C. thirtyfold
- D. fiftyfold
485. What appears to be the practical limit for analog modems over a standard telephone?
- A. 33 kbps
- B. 28.8 kbps
- C. 24 kbps
- D. 19.2 kbps
486. Which of the parameters will need to be incorporated into next generation billing solutions to calculate new 3G charges?
- A. number of packets
- B. location
- C. quality of service
- D. any of these
487. Which of the following is not considered as 3G service?
- A. streaming video
- B. wireless voice
- C. interactive shopping
- D. on-line banking and stock trading
488. ATM timing requirements feature _____ elements.
- A. 3
- B. 4
- C. 32
- D. 64
489. All are required for broadband media services delivery over IP except:
- A. high bandwidth
- B. a broadband connection
- C. a narrowband connection
- D. DSL
490. All are network components for broadband media services except
- A. video server
- B. catv box
- C. set-top box
- D. video encoder
491. A Cable Modem Termination System (CMTS) provides an Ethernet network with a geographic reach of up to _____.
- A. 1 mile
- B. 10 miles
- C. 100 miles
- D. any of these
492. The upstream data channel specification requirement for cable modem feature which of the following?
- A. 64 and 256 QAM formats
- B. data rates from 320 kbps to 10 Mbps
- C. 6 MHz-occupied spectrum that coexists with other signals in the cable plant
- D. all of the above
493. DWDM enables different formats, such as ______, to be transmitted over the optical layer.
- A. IP and ATM
- B. ATM and SONET
- C. SONET and SDH
- D. all of the above
494. Future DWDM terminals will have the capacity to transmit _____ volumes of an encyclopedia in one second.
- A. 90
- B. 250
- C. 1500
- D. 90000
495. DWDM allows the transmission of _____ over the optical layer.
- A. voice and e-mail
- B. multimedia and video
- C. data
- D. all of the above
496. Which of the following is expected to take the largest share of the three DSL varieties?
- A. SDSL
- B. HDSL
- C. ADSL
- D. IDSL
497. Which of the following standards defines procedures and message sequences used for fax communications?
- A. T.10
- B. T.30
- C. T.37
- D. T.38
498. The _____ is a particular set of standards that allows the internetworking of products from different vendors. It usually embodies a fiber-optic ring that will permit transmission in both directions.
- A. local-area network (LAN)
- B. wide-area network (WAN)
- C. synchronous optical network (SONET)
- D. common channel signaling network
499. H.255 can be defined as _____.
- A. media stream control
- B. control signaling
- C. call signaling
- D. media stream transport
500. H.245 can be defined as _____.
- A. media stream control
- B. control signaling
- C. media stream transport
- D. registration and admission
501. H.323 can be defined as _____.
- A. multimedia services over B-ISDN
- B. multimedia services over guaranteed QoS networks
- C. multimedia services over packet networks
- D. multimedia services over SCN
502. H.320 can be defined as _____.
- A. multimedia services over B-ISDN
- B. multimedia services over guaranteed QoS networks
- C. multimedia services over packet networks
- D. multimedia services over ISDN
503. One of the major advances that result from implementing intelligent networks is that _____.
- A. computers no longer have control over the network
- B. wide-area service outages are much less likely
- C. services can be adapted to user needs more efficiently
- D. service providers are now limited to a single equipment provider
504. The development of the intelligent network places increased emphasis on a consistent _____.
- A. switch model
- B. network model
- C. intelligence model
- D. call model
505. How many layers are there to the PCS air resistance?
- A. 1
- B. 2
- C. 3
- D. 4
506. What is the maximum possible number of characters in a PCS message?
- A. 64
- B. 256
- C. 1021
- D. 239
507. Signaling units are broken up into units of how many bits?
- A. 8
- B. 16
- C. 32
- D. 64
508. Two digital signals whose transitions occur at almost the same rate are _____.
- A. asynchronous
- B. synchronous
- C. plesiochronous
- D. none of these
509. Which of the following are not basic SONET network elements?
- A. switch interference
- B. digital loop carrier
- C. service control point
- D. add/drop multiplexer
510. Higher-order SDH cross-connects route what entity?
- A. 1.5 Mbps
- B. ATM cells
- C. management data channels
- D. payload within 155 Mbps
511. Scrambling is used in SDH for which reason?
- A. to randomize the bit sequence for better transmission performance
- B. to reduce the power consumption of equipment
- C. to allow for upgrade to higher bit rates
- D. to prevent unauthorized access
512. FDMA allocated ____ users per channel.
- A. 1
- B. 3
- C. 6
- D. 10
513. The G.723.1 specification for audio codecs, recommended by the VoIP Forum, requires:
- A. 6.3 kbps
- B. 7.9 kbps
- C. 8.4 kbps
- D. 10.4 kbps
514. ITU’s H.320 standard defines the protocols for transporting voice, data and video over;
- A. PSTN
- B. ISDN networks
- C. the public internet
- D. GSM network
515. Which of the following is not a layer in the WAP gateway stack?
- A. WDP
- B. context manager
- C. TCP
- D. WSP
516. Queries to the HLR are performed to find the location of the serving MSC in _____.
- A. TDMA
- B. CDMA
- C. GSM
- D. all of the above
517. The SMSC delivers messages directly to the _____.
- A. HLR
- B. VLR
- C. MSC
- D. BSC
518. Which of the following pairs of technologies use IS-41?
- A. GSM and TDMA
- B. CDMA and GSM
- C. TDMA and CDMA
- D. all of the above
519. Which of the following technologies has significant advantages in medium-density and high-density population areas because it is capable of carrying higher levels of traffic, provides better voice quality, and can transmit data at higher rates?
- A. GSM
- B. PCS
- C. CT-2
- D. DECT
520. IS-41 is a standard currently being embraced by wireless providers because it encourages _____.
- A. increased network capabilities
- B. paging
- C. roaming
- D. all of the above
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