An invitation from the primary to a secondary to transmit a message.
A. Retransmission
B. Selection
C. Reuse
D. Polling

1 Answer

Answer :

D. Polling

Related questions

Description : When one stations is designated as master and rest of the stations are considered slaves message handling is ________. A. polling B. WAN C. LAN D. OSI

Last Answer : A. polling

Description : What is the primary advantage of DSBSC in AM? A. Reduce bandwidth over standard AM B. All of these C. It is simpler to transmit and receive than the standard AM D. No transmitter power is wasted in the carrier

Last Answer : D. No transmitter power is wasted in the carrier

Description : Transmission system for a multidrop network A. Taken passing B. Polling C. Switching D. CSMA/CD

Last Answer : B. Polling

Description : How can multiple earth stations share a satellite on the same frequencies? A. Frequency reuse B. Multiplexing C. Mixing D. Frequency hopping

Last Answer : A. Frequency reuse

Description : Which frequency reuse method is less effective because of Faraday’s effect? A. Dual polarization B. Reducing antenna beamwidth C. Zonal rotation D. Spin stabilization

Last Answer : A. Dual polarization

Description : In cellular system, _____ defines the geographic distance that is required between cells using identical frequencies in order to avoid interference between the radio transmissions at these cells. A. frequency-reuse ratio B. distance-to-reuse ratio (D/R) C. reuse format plan ratio D. reuse factor

Last Answer : B. distance-to-reuse ratio (D/R)

Description : In the ______ method, all dataexchanges mustbe made throughthe primarydevice even when theultimate destinationis a secondary device. A) reservation B) polling C) token passing D) none of the above

Last Answer : polling

Description : What region around a broadcasting transmitter in which satisfactory reception of broadcasting signal is not obtained? A. Fringe area B. Primary are C. Secondary area D. Tertiary area

Last Answer : A. Fringe area

Description : What do you call the service area of a standard AM broadcast where fading is allowed but not objectionable co-channel interference? A. Experimental B. Secondary C. Tertiary D. Primary

Last Answer : B. Secondary

Description : In the _______ method, the primary device controls the link; thesecondary devices follow its instructions. A) reservation B) polling C) token passing D) none of the above

Last Answer : polling

Description : The first satellite to receive and transmit simultaneously A. Intelsat I B. Agila I C. Syncorn I D. Telstar I

Last Answer : D. Telstar I

Description : Which of the following systems uses frequency band 870-885 MHz as a transmit band of its base station? A. TACS B. NTT C. NMT D. AMPS

Last Answer : B. NTT

Description : The product of antenna input power and the antenna power gain expressed in kW is called __. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : A. Effective Radiated Power (ERP)

Description : The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : B. Effective Isotropic Radiated Power (EIRP)

Description : How do you transmit through multiplexing, a thousand of voice channel information over a single fiber optic using on e wavelength? A. Polar division B. Time division C. Fiber division D. Frequency division

Last Answer : B. Time division

Description : Term in communication which is referred, “to send out in all direction”. A. Announce B. Broadcast C. Transmit D. Media

Last Answer : B. Broadcast

Description : A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3

Last Answer : B. T1

Description : Known to be the first satellite capable to receive and transmit simultaneously. A. Score B. Syncom I C. Telstar 1 D. Echo1

Last Answer : C. Telstar 1

Description : Modulation means A. Varying of information B. Utilization of a single transmission channel to carry multiple signals C. Varying of some parameters of a carrier such as its amplitude to transmit information D. Transmit pulses in DC form on a copper wire

Last Answer : C. Varying of some parameters of a carrier such as its amplitude to transmit information

Description : Which transmit only one sideband? A. A3E B. 3AJ C. 11BE D. H3E

Last Answer : D. H3E

Description : The spray bottle for Windowlene glass cleaner could be considered a secondary-use package because A)its shape is ideal for multiple-unit packaging. B)glass cleaner works on chrome as well as glass. C)customers can reuse it for other purposes.

Last Answer : C)customers can reuse it for other purposes.

Description : _________control inthe datalink layer is based on automatic repeat request, which is the retransmission of data. A) Flow B) Error C) Transmission D) none of the above

Last Answer : Transmission

Description : In ________ error correction, the receiver asks thesender tosend thedata again. A) backward B) retransmission C) forward D) none of the above

Last Answer : retransmission

Description : Which of the following is NOT true about User Datagram Protocol in transport layer? a. Works well in unidirectional communication, suitable for broadcast information. b. It does three way ... File System d. The lack of retransmission delays makes it suitable for real-time applications

Last Answer : b. It does three way handshake before sending datagrams

Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

Description : The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b

Last Answer : C. Congestion

Description : In computer networks _________ is a characteristic that a flow needs where Lack of it means losing a packet or acknowledgment, which entails retransmission. A. Reliability B. Delay C. Jitter D. Bandwidth

Last Answer : A. Reliability

Description : The use of email to transmit a promotional message to another potential customer is called as a) Blog marketing b) Viral marketing c) Logo d) None of these

Last Answer : b) Viral marketing

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

Description : In a packet switching network, if the message size is 48 bytes and each packet contains a header of 3 bytes. If 24 packets are required to transmit the message, the packet size is ................ (1) 2 bytes (2) 1 byte (3) 4 bytes (4) 5 bytes

Last Answer : (4) 5 bytes 

Description : A measurement of -75 dBm, C-message weighted, would be _________ dBrnc. A. 8 B. 7 C. 9 D. 15

Last Answer : D. 15

Description : Interfering effect of noise, C message weighted, is _________. A. dBa B. dBm C. dBmc D. dB

Last Answer : C. dBmc

Description : What synchronization is provided so that the start and end of message is identified? A. Carrier B. Character C. Bit D. Clock

Last Answer : B. Character

Description : Asynchronous protocol is A. message oriented B. clock oriented C. bit oriented D. character oriented

Last Answer : D. character oriented

Description : The correctness and accuracy of the transmitted message content is A. verified by the modem B. communications system C. determined by the sender and receiver D. ensured by use of digital technique

Last Answer : C. determined by the sender and receiver

Description : In __________ transmission, a unique SYNC character is transmitted at the beginning of each message. A. asynchronous B. synchronous C. digital D. analogue

Last Answer : B. synchronous

Description : ECE Board Exam March 1996 One character or a sequence of characters forming a part, or the whole of a message with a specific meaning A. Signs B. Call sign C. Code D. Identifier

Last Answer : C. Code

Description : The primary North American vector transmitting arthropodborne virus encephalitis is the a) mosquito Arthropod vectors transmit several types of viruses that cause encephalitis. The primary vector in North America is ... the mosquito. d) flea. The primary vector in North America is the mosquito.

Last Answer : a) mosquito Arthropod vectors transmit several types of viruses that cause encephalitis. The primary vector in North America is the mosquito.

Description : “Each point on a spherical wavefront may be considered a source of secondary spherical wavefronts”. This is known as the A. Snell’s law B. D’Alembert’s principle C. Appleton’s theory D. Huygen’s principle

Last Answer : D. Huygen’s principle

Description : Any small element of space in the path of a wave may be considered as a source of secondary wavelet. A. De Morgan’s Principle B. Faraday’s Law C. Huygen’s Principle D. Fresnel’s Law of optics

Last Answer : C. Huygen’s Principle

Description : What is the impedance in ohms of a transformer marked for 25V, 4W, when the secondary is correctly loaded? A. 150 Ω B. 156 Ω C. 160 Ω D. 165 Ω

Last Answer : B. 156 Ω

Description : Would you follow this polling by the NYT all the way to Nov. 6?

Last Answer : Nope – I want to do a Rip Van Winkle and fall asleep until November 7 and maybe permanently after that.

Description : How does TN have my home phone number in FL as part of their call list for polling?

Last Answer : You may have used it for something like a bank account or some other business in TN, and it cross referenced in a database.

Description : What question does the anti-assisted suicide side pose when polling the population?

Last Answer : Legitimate poll takers include the questions with the results.

Description : Where you live, when you go to your polling place, does someone "announce" it when you are about to actually vote? (see details)

Last Answer : No.I have never had them do that.I might like that if they introduced me as Keith Richards.XD

Description : What is it like to work at a polling site on election day?

Last Answer : It all depends on the country. Polling sites at tensely contested elections can be hazardous. Examples of this would be those in Afghanistan, Thailand, the Philippines. Military and/or police presence are a typical sight at these countries’ polling sites. In the US, polling sites are no big deal.

Description : When people of different races line up to vote at a polling station they are exercising their righto to?

Last Answer : Feel Free to Answer

Description : If in an election to a state Legislative Assembly, the candidate who is declared elected loses his deposit, it means that? (1) The polling was very poor (2) The election was for a multi- ... over his nearest rival was very marginal. (4) A very large number of candidates contested the election.

Last Answer : (1) The polling was very poor Explanation: A candidate loses his deposit only when he is polled less than 1/6th of votes. It can only be possible when a very large number of candidates contested the elections.