Radio channels are attractive medium because __________ a) Can penetrate walls b) Connectivity can be given to mobile user c) Can carry signals for long distance d) All of the mentioned

Radio channels are attractive medium because __________
a) Can penetrate walls
b) Connectivity can be given to mobile user
c) Can carry signals for long distance
d) All of the mentioned
by

1 Answer

Answer :

d) All of the mentioned
by

Related questions

State weather the following statement is true or false for ISDN – Integrated Services Digital Network ISDN is an effort to standardize subscriber services, provide user/network interfaces 2). the goal of ISDN is to form a Local area network that provides Peer-to-Peer connectivity over digital media 3). It is a set of protocols that combines digital telephony and data transport services A. 1. True, 2. false, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Description : State weather the following statement is true or false for ISDN - Integrated Services Digital Network ISDN is an effort to standardize subscriber services, provide user/network interfaces 2). the goal of ISDN is to form a Local ... C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Last Answer : A. 1. True, 2. false, 3. true

Wireless transmission of signals can be done via ___________ a. radio waves b. microwavesc. infrared d. all of the mentioned

Description : Wireless transmission of signals can be done via ___________ a. radio waves b. microwaves c. infrared d. all of the mentioned

Last Answer : d. all of the mentioned

Demodulation is the process of A. converting digital signals toanalog signals B. converting analogsignals todigital signals C. combining many low speed channels into onehigh speed channel D. dividing the high-speed signals into frequency bands E. None of the above

Description : Demodulation is the process of A. converting digital signals toanalog signals B. converting analogsignals todigital signals C. combining many low speed channels into onehigh speed channel D. dividing the high-speed signals into frequency bands E. None of the above

Last Answer : converting analogsignals todigital signals

______ cables carry data signals in the form of light. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above

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

___ 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

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

Which operational mode/s of HDLC support/s the balanced configuration by governing point to point link connectivity in addition to the primary as well as secondary functions performed by the station?a. NRM b. ABM c. Both a & b d. None of the above

Description : Which operational mode/s of HDLC support/s the balanced configuration by governing point to point link connectivity in addition to the primary as well as secondary functions performed by the station? a. NRM b. ABM c. Both a & b d. None of the above

Last Answer : b. ABM

Which one of the following factors is considered for the orientation of buildings? (A) The direction of the prevailing winds in the area (B) The exposure of the walls and roof of the buildings to the rays of sun (C) The extent up to which the sunrays penetrate with the verandah (D) All the above

Description : Which one of the following factors is considered for the orientation of buildings? (A) The direction of the prevailing winds in the area (B) The exposure of the walls and roof of the buildings to the rays of sun (C) The extent up to which the sunrays penetrate with the verandah (D) All the above

Last Answer : Answer: Option D

Which of the following statements is not true with respect to microwaves? (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz. (B) Propagation is line-of-sight. (C) Very high-frequency waves cannot penetrate walls. (D) Use of certain portions of the band requires permission from authorities.

Description : Which of the following statements is not true with respect to microwaves? (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz. (B) Propagation is line-of-sight. (C) Very ... waves cannot penetrate walls. (D) Use of certain portions of the band requires permission from authorities.

Last Answer : (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz.

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

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

Why can cell phone signals penetrate buildings, but GPS cannot?

Description : Why can cell phone signals penetrate buildings, but GPS cannot?

Last Answer : Most likely has to do with the wavelength widths of the different signals.

Four channels are multiplexed using TDM. If each channel sends 100 bytes/second and we multiplex 1 byte per channel, then the bit rate for the link is __________. a. 400 bps b. 800 bps c. 1600 bps d. 3200 bps

Description : Four channels are multiplexed using TDM. If each channel sends 100 bytes/second and we multiplex 1 byte per channel, then the bit rate for the link is __________. a. 400 bps b. 800 bps c. 1600 bps d. 3200 bps

Last Answer : d. 3200 bps

Pick up the correct statement from the following: (A) Permeability is a measure of conducting the magnetic lines of force in the material (B) Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium (C) Permeability is expressed as the ratio of the magnetic flux density (B) to the field strength of the magnetizing field (D) All of these

Description : Pick up the correct statement from the following: (A) Permeability is a measure of conducting the magnetic lines of force in the material (B) Permeability is a measure of the extent to which magnetic ... magnetic flux density (B) to the field strength of the magnetizing field (D) All of these

Last Answer : Answer: Option D

All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Description : All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Last Answer : latency

All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Description : All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Last Answer : latency

__________ carries digitally encoded user data. a) Traffic channels b) Control channels c) Signalling channels d) Forward channels

Description : __________ carries digitally encoded user data. a) Traffic channels b) Control channels c) Signalling channels d) Forward channels

Last Answer : a) Traffic channels

__________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been the basis for almost all non-written communication and most wireless technologies used by humans today.?

Description : __________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been the basis for almost all non-written communication and most wireless technologies used by humans today.?

Last Answer : radio waves

Red light is used for signals because it has – (1) long wavelength (2) high intensity (3) high frequency (4) low refraction in the medium

Description : Red light is used for signals because it has – (1) long wavelength (2) high intensity (3) high frequency (4) low refraction in the medium

Last Answer : (1) long wavelength Explanation: Red is the international colour of stop signs and stop lights on highways and intersections because it is scattered the least by air molecules. The effect of scattering is ... the colours and is able to travel the longest distance through fog, rain, and the alike.

Red light is used for signals because it has (1) long wavelength (2) high intensity (3) high frequency (4) low refraction in the medium

Description : Red light is used for signals because it has (1) long wavelength (2) high intensity (3) high frequency (4) low refraction in the medium

Last Answer : long wavelength

Which of the following routing algorithms can be used for network layer design? a. shortest path algorithm b. distance vector routing c. link state routing d. all of the mentioned

Description : Which of the following routing algorithms can be used for network layer design? a. shortest path algorithm b. distance vector routing c. link state routing d. all of the mentioned

Last Answer : d. all of the mentioned

User datagram protocol is called connectionless because _____________ a. all UDP packets are treated independently by transport layer b. it sends data as a stream of related packets c. it is received in the same order as sent order d. it sends data very quickly

Description : User datagram protocol is called connectionless because _____________ a. all UDP packets are treated independently by transport layer b. it sends data as a stream of related packets c. it is received in the same order as sent order d. it sends data very quickly

Last Answer : a. all UDP packets are treated independently by transport layer

User datagram protocol is called connectionless because _____________ a. all UDP packets are treated independently by transport layer b. it sends data as a stream of related packets c. it is received in the same order as sent order d. it sends data very quickly Answer: Option(a) 4. Transmission control protocol ____

Description : User datagram protocol is called connectionless because _____________ a. all UDP packets are treated independently by transport layer b. it sends data as a stream of related packets c. it is received ... order d. it sends data very quickly Answer: Option(a) 4. Transmission control protocol ____

Last Answer : a. all UDP packets are treated independently by transport layer

User datagram protocol is called connectionless because _____________ A. all UDP packets are treated independently by transport layer B. it sends data as a stream of related packets C. it is received in the same order as sent order D. it sends data very quickly

Description : User datagram protocol is called connectionless because _____________ A. all UDP packets are treated independently by transport layer B. it sends data as a stream of related packets C. it is received in the same order as sent order D. it sends data very quickly

Last Answer : A. all UDP packets are treated independently by transport layer

User datagram protocol is called connectionless because _____________ a) all UDP packets are treated independently by transport layer b) it sends data as a stream of related packets c) it is received in the same order as sent order d) it sends data very quickly

Description : User datagram protocol is called connectionless because _____________ a) all UDP packets are treated independently by transport layer b) it sends data as a stream of related packets c) it is received in the same order as sent order d) it sends data very quickly

Last Answer : all UDP packets are treated independently by transport layer

Sulfamethoxypyridazine and other related long acting sulfonamides have now gone into disuse because (a) They have produced serious cutaneous reactions (b) They have produced high incidence of crystalluria (c) They interact with many drugs (d) They do not penetrate blood-brain barrier

Description : Sulfamethoxypyridazine and other related long acting sulfonamides have now gone into disuse because (a) They have produced serious cutaneous reactions (b) They have produced high incidence of crystalluria (c) They interact with many drugs (d) They do not penetrate blood-brain barrier

Last Answer : Ans: A

Prime coking coal is always blended with medium or non- coking coal before carbonisation (A) To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls (B) Because, it alone produces unreactive coke (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Prime coking coal is always blended with medium or non- coking coal before carbonisation (A) To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls (B) Because, it alone produces unreactive coke (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

What term is applied to dry stream channels with nearly vertical walls and flat bottoms which are characteristic of semi-arid regions. They may suddenly become filled with torrential waters after heavy rains. The term has a Spanish origin.

Description : What term is applied to dry stream channels with nearly vertical walls and flat bottoms which are characteristic of semi-arid regions. They may suddenly become filled with torrential waters after heavy rains. The term has a Spanish origin.

Last Answer : ANSWER: ARROYO

Computers cannot communicate with each other directly over telephone lines because they usedigitalpulses whereas telephone lines useanalog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission? A. Interface B. Modem C. Attenuation D. Teleprocessor E. None of the above

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Last Answer : Modem

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

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

Which of the following types of channels moves data relatively slowly? a. wide band channel b. voice band challen c. narrow band channel

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

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

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

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

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

Which ARQ mechanism deals with the transmission of only damaged or lost frames despite the other multiple frames by increasing the efficiency & its utility in noisy channels? a. GoBackN ARQ b. Selective Repeat ARQ c. StopandWait ARQ d. All of the above

Description : Which ARQ mechanism deals with the transmission of only damaged or lost frames despite the other multiple frames by increasing the efficiency & its utility in noisy channels? a. GoBackN ARQ b. Selective Repeat ARQ c. StopandWait ARQ d. All of the above

Last Answer : b. Selective Repeat ARQ

There are two types of designs for communication subnets: they are ………… A. Point-to-Point channels and Broadcast channels B. packet-switched subnet and store-and-forward C. Multicasting and Broadcasting D. Point-to-Point channels and store-and-forward

Description : There are two types of designs for communication subnets: they are ………… A. Point-to-Point channels and Broadcast channels B. packet-switched subnet and store-and-forward C. Multicasting and Broadcasting D. Point-to-Point channels and store-and-forward

Last Answer : A. Point-to-Point channels and Broadcast channels

Transmission Lines are also called as…………………. A. circuits B. channels C. trunks D. circuits channels, or trunks

Description : Transmission Lines are also called as…………………. A. circuits B. channels C. trunks D. circuits channels, or trunks

Last Answer : D. circuits channels, or trunks

Protocols are? A. Agreements on how communication components and DTE's are to communicate. B. Logical communication channels for transferring data C. Physical communication channels sued for transferring data D. None of above

Description : Protocols are? A. Agreements on how communication components and DTE's are to communicate. B. Logical communication channels for transferring data C. Physical communication channels sued for transferring data D. None of above

Last Answer : A. Agreements on how communication components and DTE's are to communicate.

For measurement of radio frequency ac signals __________ type meter is used

Description : For measurement of radio frequency ac signals __________ type meter is used

Last Answer : For measurement of radio frequency ac signals thermo-couple type meter is used

The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Description : The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Last Answer : B. bandpass filter

Truly effective communication: 1. Depends on using multiple channels 2. Depends on selecting the right method for each message and avoiding duplication, since everyone is overloaded with information 3. Cannot depend solely on non-verbal signals which might be misunderstood 4. Can only be achieved by communication professional 5. a, b and c

Description : Truly effective communication: 1. Depends on using multiple channels  2. Depends on selecting the right method for each message and avoiding duplication, since  everyone is overloaded with information  3. ... misunderstood  4. Can only be achieved by communication professional  5. a, b and c

Last Answer : 5. a, b and c

The physical layer provides __________ A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal levelC. specification for IR over optical fiber D. all of the mentioned

Description : The physical layer provides __________ A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned

Last Answer : D. all of the mentioned

What specifications does physical layer provides __________. A. mechanical specifications of electrical connectors and cablesB. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned

Description : What specifications does physical layer provides __________. A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned

Last Answer : D. all of the mentioned

Fiber optics posses following properties __________ a) Immune electromagnetic interference b) Very less signal attenuationc) Very hard to tap d) All of the mentioned

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

The physical layer provides __________ a) mechanical specifications of electrical connectors and cables b) electrical specification of transmission line signal level c) specification for IR over optical fiber d) all of the mentioned

Description : The physical layer provides __________ a) mechanical specifications of electrical connectors and cables b) electrical specification of transmission line signal level c) specification for IR over optical fiber d) all of the mentioned

Last Answer : d) all of the mentioned

Given an AM radio signal with abandwidth of10 KHzand the highest-frequency component at 705 KHz, what is the frequency of the carrier signal? A) 700 KHz B) 705 KHz C) 710 KHz D) Cannot bedetermined from giveninformation

Description : Given an AM radio signal with abandwidth of10 KHzand the highest-frequency component at 705 KHz, what is the frequency of the carrier signal? A) 700 KHz B) 705 KHz C) 710 KHz D) Cannot bedetermined from giveninformation

Last Answer : 700 KHz

Intranetsand extranets can use their network fire walls andother security features to establish secureInternet links within an enterpriseor with its trading partners. Select the best fit for answer: A. Network Server B. Virtual Private Network C. Networkoperating system D. OS

Description : Intranetsand extranets can use their network fire walls andother security features to establish secureInternet links within an enterpriseor with its trading partners. Select the best fit for answer: A. Network Server B. Virtual Private Network C. Networkoperating system D. OS

Last Answer : Virtual Private Network

Gram negative organisms are largely insensitive to benzyl penicillin because (a) They produce large quantities of penicillinase (b) They do not utilize D-alanine whose incorporation in the cell wall is inhibited by benzyl penicillin (c) Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multiplayer cell wall of gram-negative bacteria (d) Both (a) and (b)

Description : Gram negative organisms are largely insensitive to benzyl penicillin because (a) They produce large quantities of penicillinase (b) They do not utilize D-alanine whose incorporation in the cell wall is ... lipoprotein-peptidoglycan multiplayer cell wall of gram-negative bacteria (d) Both (a) and (b)

Last Answer : Ans: C

31 Scalding with steam is more severe than scalding by boiling water because A. Steam can penetrate the skin B. Steam is at a higher temperature C. Steam contains more energy than boiling water D. Steam is at a higher pressure

Description : 31 Scalding with steam is more severe than scalding by boiling water because A. Steam can penetrate the skin B. Steam is at a higher temperature C. Steam contains more energy than boiling water D. Steam is at a higher pressure

Last Answer : ANSWER: C

The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Description : The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Last Answer : Ans:(d)

Scalding with steam is more severe than scalding by boiling water because (a) steam can penetrate the skin (b) steam is at a higher temperature (c) steam contains more energy than boiling water (d) steam is at a higher pressure

Description : Scalding with steam is more severe than scalding by boiling water because (a) steam can penetrate the skin (b) steam is at a higher temperature (c) steam contains more energy than boiling water (d) steam is at a higher pressure

Last Answer : Ans:(c)

White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : (2) reflect all the light that reaches them Explanation: The coolness and warmth associated with clothes is because of their reflective or absorptive capacities. White clothes are good reflectors of light, thereby keeping the body cool. The opposite is the case with black clothes.

Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive are expressed in haploids (c) haploids are reproductively more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Description : Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive ... more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Last Answer : (b) all mutations, whether dominant or recessive are expressed in haploids