Description : In______signaling, the samecircuit is used for both signaling and data. A) in-band B) out-of-band C) mixed D) none of the above
Last Answer : in-band
Description : Analog-to-analog conversionis needed if the available bandwidthis _______. A) low-pass B) band-pass C) either (a)or (b) D) neither (a) nor (b)
Last Answer : band-pass
Description : The largest portionof the bandwidth for ADSLcarries_______. A) voice communication B) upstream data C) downstream data D) control data
Last Answer : downstream data
Description : ________ are usedfor short-range communications such as those between a PC and aperipheral device. A) Radio waves B) Microwaves C) Infrared waves D) none of the above
Last Answer : Infrared waves
Description : In Manchester anddifferential Manchester encoding, the transition at the middle of the bit is usedfor __________. A) bit transfer B) baud transfer C) synchronization D) none of the above
Last Answer : synchronization
Description : The technique in which a congested node stops receiving data from the immediate upstream node or nodes is called as _______ A. Admission policy B. Backpressure C. Forward signaling D. Backward signaling
Last Answer : B. Backpressure
Description : Theprotocol that isused for signaling in the telephone network is called ______. A) POP B) SSS C) SS7 D) none of the above
Last Answer : SS7
Description : Which of the following communications lines is best suited to interactive processing applications? a. narrow band channel b. simplex lines c. full duplex lines d. mixed band channels
Last Answer : full duplex lines
Description : A remote batch-processing operation in which datais solely input toa central computer would requirea: A. telegraphline B. simplex lines C. mixed-band channel D. All the above E. None of the above
Last Answer : simplex lines
Description : ____________ is the out-of-band signaling between toll central offices (Bell System Standard) A. 2,000 Hz B. 800 Hz C. 3,835 Hz D. 3700 Hz
Last Answer : D. 3700 Hz
Description : What Are The Primary Elements Usedfor Flow Measurement?
Last Answer : The primary elements used for flow measurement are: 1. Orifice Plate. 2. Venturi tube. 3. Pitot tube. 4. Annubars. 5. Flow Nozzle. 6. Weir & Flumes.
Description : What are the datatransmission channels availablefor carrying datafrom one location to another? A. Narrowband B. Voice band C. Broadband D. All of theabove E. None of the above
Last Answer : All of theabove
Description : An interfering current in a telegraph or signaling channel due to telegraph or signaling current by another channel. A. Crosstalk B. Noise current C. Crossfire D. Intermodulation
Last Answer : C. Crossfire
Description : A remote batch-processing operation in which data is solely input to a central computer would require a. telegraphp line b. simplex lines c. mixed bad channel d. all of above
Description : Which of the following printing devices an output composed of a series of data? a. Wire matrix printer b. Band printer c. Wang image printer d. Both a and c
Last Answer : Both a and c
Description : Which of the following types of channels moves data relatively slowly? a. wide band channel b. voice band challen c. narrow band channel
Last Answer : narrow band channel
Description : In______, each station is allocated a band to send its data. In other words, each band is reservedfor a specific station,and it belongs to the station all the time. A) FDMA B) TDMA C) CDMA D) none of the above
Last Answer : FDMA
Description : Which of the following types of channels moves data relatively slowly? A. widebandchannel B. voice band channel C. narrowband channel D. broadbandchannel E. None of the above
Last Answer : narrowband channel
Description : Common channel signalling______________ (A) Uses the speech or data path for signaling. (B) Does not use the speech or data path for signaling. (C) Needs no additional transmission facilities. (D) Finds it difficult to handle signaling during speech.
Last Answer : (C) Needs no additional transmission facilities.
Description : Thetwo most common digital services are ________ service and______. A) switched/56; switched/64 B) switched/56; DDS C) DDS; swiched 64 D) leased; out-of-band
Last Answer : switched/56; DDS
Description : Telephone companiesprovidetwotypes of analog services: analog _______services andanalog _____services. A) switched; in-band B) out-of-band; in-band C) switched; leased D) leased; out-of-band
Last Answer : switched; leased
Description : In process to process delivery, an application process is assigned a ………….., which is likely to be …………….each time that process is started A. process identifier number , different B. process identifier number, same C. source, mixed D. Source, similar
Last Answer : A. process identifier number , different
Description : An output device that uses words or messages recorded on a magnetic medium to produce audio response is b. Magnetic tape c. Voice response unit d. Voice recognition unit e. Voice band
Last Answer : Voice response unit
Description : A band is always equivalent to a. a byte b. a bit c. 100 bits d. none of above
Last Answer : none of above
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 : Slow down, if necessary stop, make sure that a railway vehicle is approaching. It is always necessary to stop and only pass through the rails with due care.
Last Answer : Slow down and, if necessary, stop to make sure the vehicle is approaching.
Description : How do you spell signaling?
Last Answer : The US spelling is signaled, while the UK variant is signalled.
Description : Eicosanoids mediate inflammation in a variety of ways. Of the following statements, which are true with regard to this? a. Eicosanoids are stored in cytoplasmic granules ... include vasodilatation, vasoconstriction, increased vascular permeability and both chemotaxis and chemoattractant inhibition
Last Answer : Answer: b, d The eicosanoids are derived from arachidonic acid (eicosatetraenoic acid) and consist of prostaglandins, thromboxanes, leukotrienes and lipoxins. The eicosanoids are not ... nervous system d. Mononuclear phagocytes release a variety of proinflammatory cytokines and growth factors
Description : Which of the following is not a way of minimizing if not eliminating noise? A. Use redundancy B. Increase transmitted power C. Reduce signaling rate D. Increase channel bandwidth
Last Answer : D. Increase channel bandwidth
Description : Sources of impulse noise induced in communication channels. A. Erroneous digital coding bit caused by an error on a transmission facility B. Transients due to relay operation C. Crosstalk from dc signaling systems D. All of these
Last Answer : D. All of these
Description : A quadrature signaling have ________ possible states. A. 16 B. 8 C. 32 D. 4
Last Answer : D. 4
Description : Describe the various signalling techniques. Compare in-channel signalling with common channel signaling, which is more advantageous.
Last Answer : Signaling systems link the variety of switching systems, transmission systems and subscriber equipments in telecommunication network to enable the network to function as a whole. Three forms of signaling are ... for passing control signals for a group of trunks or information
Description : Write short notes on: i. Stored Program Control. ii. Congestion. iii. Common channel signaling. iv. PSTN.
Last Answer : (i) Stored Program Control: In centralized control, all the control equipment is replaced by a single processor which must be quite powerful. It must be capable of processing 10 to 100 calls ... the combination of lines and switches that from a system of electrical routes through the network.
Description : Write short note on Associated vs. Common channel signaling.
Last Answer : Associated vs Common channel signalling: The out band signalling suffers from the very limited bandwidth. Both are capable of having only a small signal repertoire. The trend in modern networking ... economic implementation and simple assignment of trunk groups to signalling channels.
Description : SPC stands (A) Standard Protocol Control (B) Stored Program Control (C) Signaling and switching Centre (D) Signaling Process Center
Last Answer : (B) Stored Program Control
Description : The phase relationship between signaling elements for BPSK is the optimum signaling format and occurs only when two binary signal levels are allowed and when one signal is the exact negative of the other
Last Answer : Antipodal signaling
Description : In a temporary signaling arrangements for a bridge work in BG section, speed board shall be placed in advance of 30 m from the a) C.L. of the bridge b) Termination Board c) Start of the bridge/work spot* d) Caution Board
Last Answer : c) Start of the bridge/work spot*
Description : .In a temporary signaling arrangements for a bridge work in BG section, caution board shall be placed in advance of ……. m from start of the bridge/ work spot. a) 30 m b) 1200 m* c) 677 m d) 1000 m
Last Answer : b) 1200 m*
Description : What are integrins and do they influence cell-cell signaling?
Last Answer : Integrins are a diverse family of transmembrane proteins consisting of alpha and beta subunits that are found in all animal cells. Integrins link the actin cytoskeleton to the ... movement, and can thus influence actin cytoskeleton dynamics and intracellular signaling of neighboring cells.
Description : What are gap junctions and how do they contribute to cell-cell signaling?
Last Answer : Gap junctions are specialized connections that form a pore between adjacent cells, which permit small molecules and ions to move from one cell to another. In this way, gap junctions provide metabolic and electrical coupling between cells.
Description : List several side-to-side cellular junctions that can influence cell signaling.
Last Answer : Gap junctions, desmosomes, adherens junctions, integrin connections
Description : What types of signaling molecules bind to and activate RTKs?
Last Answer : Growth factors, hormones, some extracellular matrix proteins, some cell surface proteins (i.e. ephrin)
Description : Why do ion channels contribute to faster cellular responses than other signaling mechanisms, such as GPCR-mediated signaling?
Last Answer : Ion channels generate electrical signals, which signals travel much more rapidly than chemical signals that depend on the process of molecular diffusion. An electrical signal can traverse the entire length of a nerve cell within milliseconds.
Description : Briefly, describe how GPCR and heterotrimeric G protein-mediated signaling occurs.
Last Answer : Binding of a signaling molecule (ligand) to GPCRs causes a conformation change in GPCR, leading to heterotrimeric G protein activation, where GTP physically replaces the GDP bound to the alpha ... some G proteins stimulate the activity of target proteins, whereas others G proteins are inhibitory.
Description : Give any four advantages of voice frequency signaling over DC signaling system.
Last Answer : Advantages of Voice Frequency Signaling Over DC Signaling System: 1. Large number of circuits can be easily derived over a single pair of wires (single pair can control 18 stations). 2. Signal ... used over long distances. 5. Can be used where large number of equipment can be controlled.
Description : State any four ideal requirements of signaling system.
Last Answer : i) Unless the whole section of track governed by the signal is clear & safe, it should not be possible to display safe' indication. ii) Failure of any component of signaling scheme should give danger ... shall be provided in the same track space for at least 600m in the rear of the signal.
Description : Which of the following are true in the context of Manchester Coding Signaling ? (A) It suppresses the DC component (B) It suppresses the high frequency component (C) Pulses are unit symbol wide (D) Symbol “1” is represented by positive pulse
Last Answer : Which of the following are true in the context of Manchester Coding Signaling ? (A) It suppresses the DC component (B) It suppresses the high frequency component (C) Pulses are unit symbol wide (D) Symbol “1” is represented by positive pulse
Description : When data moves from one set of major connections to another on theInternet, we call theseconnections the Internet _____. A) Pathway B) Backbone C) Communications system D) Routers
Last Answer : Backbone
Description : Transmission of computerized data from one location to another is called A. data transfer B. data flow C. data communication D. data management E. None of the above
Last Answer : data communication
Description : The type of bond in which every course contains both headers and stretchers, is called (A) English bond (B) Flemish bond (C) Russian band (D) Mixed bond
Last Answer : Answer: Option B