Description : Which of the following performs modulation and demodulation? a. fiber optics b. satellite c. coaxial cable d. Modem
Last Answer : d. Modem
Description : Which of hte following is considered a broad band communication channel? a. coaxial cable b. fiber optics cable c. microwave circuits d. all of above
Last Answer : all of above
Description : Which of the following is used for modulation and demodulation? A. modem B. protocols C. gateway D. multiplexer E. None of the above
Last Answer : modem
Description : Modulation and demodulation is performed by (a) Microwave (b) Satellite (c) Modem -Technology
Last Answer : (c) Modem converts digital signals to analog signals or analog signals to digital signals for the purpose of transmitting data over telephone lines or vice-versa.
Description : The receive GCE system in an earth station performs what function(s)? A. Modulation and multiplexing B. Up conversion C. Demodulation and demultiplexing D. Down conversion
Last Answer : C. Demodulation and demultiplexing
Description : The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as: a. modulation b. demodulation c. synchronizing d. digitising
Last Answer : digitising
Description : The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as a. modulation b. demodulation c. synchronizing d. Digitizing
Last Answer : b. demodulation
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 : 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 : 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 : ______ 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 : 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 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 : 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 : 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 : Which of this is not a guided media? a) Fiber optical cable b) Coaxial cable c) Wireless LAN d) Copper wire
Last Answer : c) Wireless LAN
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 : 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 : 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 : ……….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 : 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 : The method of Internet access that requires a phone line, but offers faster access speeds than dialup is the _____ connection. a) cable access b) satellite access c) fiber-optic service d) modem e) None of these
Last Answer : d) modem
Description : In a fiber-optic cable, the signal is propagatedalong theinner core by _______. A) reflection B) refraction C) modulation D) none of the above
Last Answer : reflection
Description : Which of the following is not a transmission medium? a. telephone lines b. coaxial cables c. modem d. microwave systems
Last Answer : microwave systems
Description : Which of the following is an advantage to using fiber optics data transmission? a. resistance to data theft b. fast data transmission rate c. low noise level d. all of above
Last Answer : fast data transmission rate
Description : Fiber optics posses following properties __________ a) Immune electromagnetic interference b) Very less signal attenuation c) Very hard to tap d) All of the mentioned
Last Answer : d) All of the mentioned
Description : Question... does a coaxial cable deliver both TV and internet data at the same time? if i'm using the coaxial cable for watching TV would i able to connect it to a modem get internet from it... If i'm paying for internet service?
Last Answer : Buy a splitter for the coax and do both at the same time. Yes, they both come down at the same time.
Description : Which of the following is avoice bandchannel? A. Telephoneline B. Telegraphline C. Coaxial cable D. Microwave systems E. None of the above
Last Answer : Telephoneline
Description : To connect a computer with a device inthe same room, you might be likely to use A. a coaxial cable B. a dedicated line C. a groundstation D. All of theabove E. None of the above
Last Answer : a coaxial cable
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 : 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 : Why Fiber Optics Cable is EMI Free ?
Last Answer : Since fiber optics is made of insulating material, it is free from electromagnetic effects or EMI. The components of fiber optics are soda , boro silicate , soda lime silicate and soda alumina silicate ... and plastic is also an insulating material. As a result, fiber optics is always EMI free
Description : Fiber optics cable used in communication, works on the principle of (1) regular reflection of light (2) diffuse reflection of light (3) refraction of light (4) total internal reflection of light
Last Answer : total internal reflection of light
Description : _________ uses thin coaxial cable. A) 10Base5 B) 10Base2 C) 10Base-T D) 10Base-F
Last Answer : 10Base2
Description : ______uses thick coaxial cable. A) 10Base5 B) 10Base2 C) 10Base-T D) 10Base-F
Last Answer : 10Base5
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 : To connect a computer with a device inthe same room, you might be likely to use A. a coaxial cable B. a dedicated line C. a groundstation D. All of theabove
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 : Modulation or demodulation alone cannot be an effective method- Explain ?
Last Answer : The process of converting digital signal to analog signal is called modulation and demodulation. Data communication is the combined result of both modulation and demodulation process. In order to facilitate ... the received signal are done by using modem at both the sender and the receiver.
Description : Write the types of modulation and demodulation ?
Last Answer : There are three main types of modulation. Namely: (a) Amplitude modulation: The modulation in which the amplitude of the carrier signal changes according to the modulating frequency is called ... the carrier signal changes according to the modulating frequency is called phase modulation.
Description : What is modulation and demodulation ?
Last Answer : Modulation: The method by which audio frequency is mixed with high frequency is called modulation. Demdulation: The method by which the original modulating signal is separated is called demodulation. That is, it separates the audio frequency from the high-frequency.
Description : What medium is used by IBM token ring network that operates at either 4 Mbps or 16 Mbps? A. Twisted pair B. Coaxial cable C. Fiber-optic D. Parallel-wire line
Last Answer : A. Twisted pair
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