Description : The slowest transmissionspeeds are those of A. twisted-pair wire B. coaxial cable C. fiber-optic cable D. microwaves
Last Answer : twisted-pair wire
Description : Which of the following is nota guided medium? A) twisted-pair cable B) coaxial cable C) fiber-optic cable D) atmosphere
Last Answer : atmosphere
Description : Which of the following is not a guided medium? a. twisted-pair cable b. fiber-optic cable c. coaxial cable d. atmosphere
Last Answer : d. atmosphere
Description : 802.3 is the standard for 10BASE5 Ethernet that uses ___________ cable as shared medium. A. Twisted pair cable B. Coaxial cable C. Fiber optic cable D. None of the above
Last Answer : B. Coaxial cable
Description : The HFC network uses _______ cable. A) twisted-pair B) coaxial C) fiber-optic D) acombination of (b) and (c)
Last Answer : fiber-optic
Description : What kind of transmission medium is most appropriate to carry data in a computer network that is exposed to electrical interferences? a) Unshielded twisted pair b) Optical fiber c) Coaxial cable d) Microwave
Last Answer : b) Optical fiber
Description : The traditional cable TV system used ________cable endto end. A) twisted-pair B) coaxial C) fiber-optic D) none of the above
Last Answer : coaxial
Description : ___ cable can carry signals ofhigher frequency ranges than_____ cable. A) Twisted-pair; fiber-optic B) Coaxial; fiber-optic C) Coaxial; twisted-pair D) none of the abov
Last Answer : Coaxial; twisted-pair
Description : ______ cable is used for voice and data communications. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Twisted-pair
Description : ______ cable consists of an inner copper core and asecond conductingouter sheath. A) Twisted-pair B) Coaxial C) Fiber-optic D) Shielded twisted-pair
Last Answer : Coaxial
Description : Consists of 2 conductors twisted round each other. a. Twisted pair cable b. Fiber optic cable c. Coaxial cable d. Microwave
Last Answer : a. Twisted pair cable
Description : ……….cable is used for voice and data communications. a. Twisted-pair b. None of These c. Coaxial d. Fiber-optic
Last Answer : a. Twisted-pair
Description : Which one of the following media is multidrop? (A) Shielded Twisted pair cable (B) Unshielded Twisted pair cable (C) Thick Coaxial cable (D) Fiber Optic cable
Last Answer : (C) Thick Coaxial cable
Description : ……………….. is a high performance fiber optic token ring LAN running at 100 Mbps over distances upto 1000 stations connected. A) FDDI B) FDDT C) FDDR D) FOTR
Last Answer : A) FDDI
Description : ........... is a high performance fiber optic token ring LAN running at 100 Mbps over distances up to 1000 stations connected. A) FDDI B) FDDT C) FDDR D) FOTR
Description : .is a high performance fiber optic token ring LAN running at 100 Mbps over distances up to 1000 stations connected. A) FDDI B) FDDT C) FDDR D) FOTR
Description : Identify the non suitable medium for 802.3 ethernet? a. A thin coaxial cable b. A twisted pair cable c. A microwave link d. A fiber optical cable
Last Answer : c. A microwave link
Description : Which of the following cannot be used as a medium for 802.3 ethernet? a) A thin coaxial cable b) A twisted pair cable c) A microwave link d) A fiber optical cable
Last Answer : c) A microwave link
Description : was the first step in the evolution of Ethernet from a coaxial cable bus to hub managed, twisted pair network. a. Star LAN b. Ring LAN c. Mesh LAN d. All of the above
Last Answer : a. Star LAN
Description : ....... was the first step in the evolution of Ethernet from a coaxial cable bus to hub managed, twisted pair network. A) Star LAN B) Ring LAN C) Mesh LAN D) All of the above
Last Answer : A) Star LAN
Description : 8............. was the first step in the evolution of Ethernet from a coaxial cable bus to hubmanaged, twisted pair network. A) Star LAN B) Ring LAN C) Mesh LAN D) All of the above
Description : Which transmission media provides the highest transmission speed in a network? a. coaxial cable b. twisted pair cable c. optical fiber d. electrical cable
Last Answer : c. optical fiber
Description : Which transmission media provides the highest transmission speed in a network? a) coaxial cable b) twisted pair cable c) optical fiber d) electrical cable
Last Answer : c) optical fiber
Description : The local loop has _______ cablethat connects the subscriber telephonetothe nearest end office. A) twisted-pair B) coaxial C) fiber-optic D) none of the above
Last Answer : twisted-pair
Description : ______ cables carry data signals in the form of light. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Fiber-opti
Description : __________ consists of a central conductor and a shield. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Description : ________cable consists of two insulated copper wires twistedtogether. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Description : ……cables are composed of a glass or plastic inner core surrounded by cladding,all encased in an outside jacket. a. Fiber-optic b. Coaxial c. Shield Twisted Pair d. Unshield Twisted-pair
Last Answer : a. Fiber-optic
Description : ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste
Last Answer : B. Communications satellite
Description : Identify the odd term amongst the following group : (1) Optical fibre (2) Twisted pair wire (3) Microwaves (4) Coaxial cable
Last Answer : Microwaves
Description : Fiber optic cable operates near _______ frequencies. A. 800 THz B. 20 MHz C. 200 MHz D. 2 GHz
Last Answer : A. 800 THz
Description : What do you call a cable consisting of twisted pairs of conductors, each separately insulated? A. Microstrip line B. Strip line C. Quad D. Coaxial cable
Last Answer : C. Quad
Description : S/NET is another kind of ………….network with an ………….for switching. A. fiber optic, active star B. active star , fiber optic C. twisted cable, active network D. active network, twisted cable
Last Answer : A. fiber optic, active star
Description : What line has a typical velocity factor of about 0.8? A. Shielded pair B. Flexible coaxial C. Twin-lead D. Open-wire line
Last Answer : C. Twin-lead
Description : What type of communication media is the most widely usedcabling for data transfer today? A) Cat 5 B) Twisted pair C) Coaxial D) Optical fiber
Last Answer : Cat 5
Description : If a fiber optic system has a rise time of 16 ns, the source rise time is 1.5 ns and the detector rise time is 2 ns, what is the cable rise time? A. 14 ns B. 6 ns C. 9 ns D. 12.5 ns
Last Answer : A. 14 ns
Description : Which of the following is not a bounded medium? A. Coaxial line B. Two-wire line C. Waveguide D. Free space
Last Answer : D. Free space
Description : What is the major factor that makes coaxial cable less susceptible to noisethan twisted-pair cable? A) inner conductor B) diameterof cable C) outer conductor D) insulating material
Last Answer : outer conductor
Description : A node X on a 10 Mbps network is regulated by a token bucket. The token bucket is filled at a rate of 2 Mbps. Token bucket is initially filled with 16 megabits. The maximum duration taken by X to transmit at full rate of 10 Mbps is ............ secs. (1) 1 (2) 2 (3) 3 (4) 4
Last Answer : (2) 2
Description : What type of balun (balanced-to-unbalanced) is used in high frequency applications? A. Transformer type balun B. A specially configured coaxial transmission line C. A specially configured parallel-wire line D. A λ/2 transformer balun
Last Answer : B. A specially configured coaxial transmission line
Description : Best choice of transmission line component to couple a coaxial line to a parallel-wire line A. Shorting B. Balun C. Slotted line D. Directional coupler
Last Answer : B. Balun
Description : To connect coaxial line to a parallel-wire _________ is the best to use. A. directional coupler B. quarter-wave transformer C. balun D. slotted line
Last Answer : C. balun
Description : Why is the physical length of a coaxial cable transmission line shorter than its electrical length? A. Skin effect is less pronounced in the coaxial cable B. RF energy moves slower along the ... higher in the parallel feed line D. The characteristic impedance is higher in the parallel feed line
Last Answer : B. RF energy moves slower along the coaxial cable
Description : ______ cables arecomposed ofa glass or plastic inner core surrounded by cladding, allencasedin an outside jacket. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Fiber-optic
Description : An RG-11/U foam coaxial cable has a maximum voltage standing wave of 52 V and a minimum voltage of 17 V. Find the value of the resistive load. A. 24.59Ω B. Either A or C C. 228.75Ω D. Neither A nor C
Last Answer : B. Either A or C
Description : A coherent binary phase shift keyed BPSK transmitter operates at a bit rate of 20 Mbps with a carrier to noise ratio C/N of 8.8dB. Find Eb/No. A. 73 dB B. 62.4 dB C. 81.8 dB D. 8.8 dB
Last Answer : D. 8.8 dB
Description : The core of a fiber optic is surrounded by a. Wire braid shield b. Kevlar c. Cladding d. Plastic insulation
Last Answer : c. Cladding
Description : Which type of fiber-optic cable is the best for very high speed data? a. Single-mode step-index b. Multimode step-index c. Single-mode graded-index d. Multimode graded-index
Last Answer : a. Single-mode step-index
Description : Which type of fiber optic cable is most widely used? a. Single-mode step-index b. Multimode step-index c. Single-mode graded-index d. Multimode graded-index
Description : A popular light wavelength in fiber-optic cable is a. 0.7 um b. 1.3 um c. 1.5 um d. 1.8 um
Last Answer : b. 1.3 um