3955,3934,3935,3936,3926,3932,3931,3950,3953 Q1)What are the two major classes of transmission media? ->1)Guided Media 2)Unguided Media
Q2)What happens if the wires of twisted pair cables are not parallel? ->Signal set by the sender on one of the wires,interfarence(noise) & crosstalk may affect both wires create unwanted signals.
Q3)What are te full formof 1)UTP 2)STP ->1)Unshield Twisted Pair 2)shield Twisted Pair
Q4)Which connector are used to connect unshield twisted pair cables? ->RJ45(Register Jack 45)
Q5)Why RJ45 is called as keyed connector? ->Because this connector can be inesrted only in one way.
Q6)What is application of unshield twisted pair cables if the data rate is 1)100Mbps 2)<0.1Mbps ->1)LAN 2)Telephone
7)Give the way to measure performances of twisted pair cables? ->The way to measure performances of twisted pair cables is to compare attenuation verses frequency and distance.
Q8)What is 'Gague'? -?Gauge is a measure of the thickness of the wire.
Q9)List the categories of unsheild twisted pair cables? ->1)CAT1 2)CAT2 3)CAT3 4)CAT4 5)CAT5E 6)CAT6 7)CAT7
Q10)Why twisted pair cables are used in telephone lines? ->Twisted pair cables are used in telephones lines to provide voice channels and data channels.
Q11)What is full form of BNC connector? ->Bayone-Neil-Concelman connector.
Q12)On which ratings coaxial cables are categories? ->Radio Government (RG) ratings.
Q13)List categories of coaxial cables? ->1)RG-58 2)RG-59 3)RG-11
Q14)How many voice channels can a single coaxial network can carry? ->10,000 voice signals.
Q15)How much digital data is been carried by a single coaxial cables? ->Upto 600Mbps
Q16)Application of coaxial cables? ->1)Cable TV 2)Thin ethernet 3)Thick ethernet.
Q17)What are two major modes of fibre optic ables? ->1)Multimode 2)Singlemode
Q18)What is multimode? ->Multiple beams from light source move through the core in different path is called multimode.
Q19)What are the two type of multimode fibre optical cables? ->1)Step-index fibre optic cable 2)Graded-index fibre optic cable.
20)What is full form 1)SC 2)ST ->1)Subscriber channel connector 2)Straight-tip connector.
Q21)List advantages of fibre optic cables? ->1)Higher bandwidth 2)less signal attenuation 3)Immunity to elctromagnetic interference 4)Resistance to corrosive material 5)Light weight 6)Greater immunity to tapping
Q22)List disadvantages of fibre optic cable? ->1)Installation to maintenanace 2)Unidirectional light propogation 3)cost
Q23)What are three ways of propogation in wireless/unguided transmission media? ->1)Ground propogation 2)Sky propogation 3)Line-of-sight propogation
Q24)What is range of: a)VLF Band b)UHF Band c)EHF Band ->1)3-30kHz 2)300Mhz-3GHz 3)30-300GHz
Q25)"Radio waves are omnidirectional" state true false? ->True
Q26)Application of microwaves? ->1)Cellular phones 2)Satallite networks 3)LAN'S
Q27)Micrwaves needs_______________antenna a)Multidirectional b)Unidirectional c)Omnidirectional d)None of above ->b)Unidirectional.
Q1:what are the two types of transmission media? Ans:the transmission media is classified into two types: (1)guided (2)unguided
Q2:how is guided medium classified? Ans:the guided media classified as: (1)twisted pair cable (2)coaxial cable (3)fiber-optic cable
Q3:list application of UTP. Ans:(1)telephone system,basic rate interface in ISDN. (2)token ring networks. (3)fast and gigabit ethernet. (4)ethernet LAN,telephony,video.
Q4:list the medium used for line of sight communication. Ans:infrared waves are widely used for short-range,line-of-sight communication like remote controls used on T.V,V.C.R and stereos.
Q5:list the purpose of 4 wires used in CAT5/6 cables. Ans:these wires are twisted into 4 pairs of wires,each pair has a common color theme.one wire in the pair has a solid colored wire and the other being a white wire with a colored stripe.the wire paire are: (1):Orange(O)and White/Orange (o or O/) (2):Green(G)and White/Green (g or G/) (3):Blue(B)and White/Blue (b or B/) (4):Brown(Br)and White/Brown (br or BR/)
Q6:what is crimping? Ans:crimping is the process of connecting the wire to the connector.A special purpose tool called crimping tool is used to join the cable and the connector.
Q1. What is ARQ? -> Automatic Repeat Request. Q2. What are the types of transmission media? ->Guided media and Unguided media . Q3. What is unit of S/N ratio? -> decibels(dB) Q4. List key components of optical transmission. ->light source, transmission media, detector. Q5. Define chromatic dispersion. ->light pulses sent down a fiber spread out in length as they propagate. This spreading is called chromatic dispersion. Q6. What is GEO? -> Geostationary Earth Orbit. Q7. Nyquist's theorem. -> max data rate =2 H log2 V bits/sec Q8. List basic categories of multiplexing. ->1)FDM 2)TDM Q9. What is cross over cable? ->This are mostly used to connect to host directly. Q10. Types of OFC. -> (i)single mode (ii)multimode Q11. Define fiber nodes ->The electro-optical converters that interface between the optical and electrical parts of the system are called fiber nodes. Q12. Application of twisted pair cable. ->i)telephone system ii)low cost iii)widely used Q13. Use of coaxial cable . -> it is still widely used for television and metropolitan area networks. Q14. What is formula for Attenuation in dB? -> Attenuation in dB=10 log10 × (transmitted power/received power)
Rollno.3959,3962,3964,3945 computer networking Q1.what are the functions of data link layer? Ans :- the data link layer has a number of specific function it can carry out. these function include 1. providing a well defined service interface to the network layer 2. dealing with transmission error 3. regulating the flow of data so that slow recievers are not swamped by fast senders.
Q2. what is unacknowledged connectionless service? Ans :- unacknowledged connectionless service consists of having the source machine send Independent frame to the destination machine without having the destination machine acknowledgement them.
Q3. what is character stuffing? Ans :- The senders data link layer insert special escape byte (ESC) just before is "accidental" flag by in the data.The data link layer on the receiving end remove ESC byte before the data are given to network layer.This technique is called as byte stuffing or character stuffing.
Q4. what is the major disadvantages of flag bytes with byte stuffing? Ans :- A major disadvantage of using this framing method is that it is closely tied to the use of 8 bit characters,not all characters codes use 8 bit character.
Q5. what is the hamming distance? Ans :- number of bit positions in which two codewords differ is called the hamming distance.
Q6. how many errors can hamming code correct? Ans :- hamming codes can correct single error.
Q7. what are stop and wait? Ans :- protocols in which the sender sends one frame and then waits for an acknowledgement before proceeding are called stop and wait.
Q8. what is PAR? Ans :- Protocols in which the sender wait for a positive acknowledgement before advancing to the next date item are often called PAR (positive acknowledgement with the retransmission).
Q9. what is piggy backing? Ans :- the technique of temporarily delaying outgoing acknowledgement so that they can be hooked onto the next outgoing data frame is known as piggy backing.
Q10. what are the two basic approaches for dealing with error in the presence of pipelining? Ans :- 1. go back n and selective repeat are the two basic approaches for a dealing with errors in the presence of pipelining.no:3959,3962,3964,3945
Roll no. 3959,3962,3964,3945 chapter 4 computer networking Q1. what is called as local loop? Ans :- 2 wire connection between each subscribers the telephone and the end office are the known in the trade as the local loop.
Q2. what are the major component of telephone system Ans :- 1. local loop (analogue twisted pair going into houses and businesses) 2. trunks ( digital fibre optics connecting the switching offices). 3. switching offices (where calls are removed from one trunk to another).
Q3. what are toll offices? Ans :- each end office has a number of outgoing lines to one or more nearby switching Centres is called toll offices.
Q4. what are tall connecting trunks? Ans :- the lines about going from and office to more than one near by switching Centre called the toll connecting trunks.
Q5. what are the problems from which transmission line suffers? Ans :- 1. attenuation 2. delay distortion 3. noise
Q6. what is attenuation? Ans :- attenuation is the loss of energy as a signal propogates outward.The loss is expressed in a decibels per kilometre.
Q7. How distortion take place? Ans :- to make things were the different fourier components also propagate at a different speed in the wire.The speed difference leads to distortion of the signal received at the other end.
Q8. what is noise? Ans :- It is unwanted energy from sources other than the transmitter.
Q9. what is called as QPSK? Ans :- It is quadrature phase shift keying.
Q10. what is called full duplex? Ans :- A connection that allows traffic in both directions to simultaneously is called as full duplex.
3941,3952 1) what is common application of twisted pair cable? -> telephone system. 2) what are the two type of twisted pair cable? ->utp(unshielded twisted pair) and stp(shielded twisted pair). 3)on which facter bandwidth of coaxial cable depends? ->the bandwidth of coaxial cable depends on cable quality,length and snr of data singnal. 4)what are the key components of an optical transmission system? ->an optical transmission system has three key components - light source, transmission medium and detector. 5)what is major drawback of infrared communication? ->the major drawback of infrared communication is they do not pass through solid objects.
3905,3930,3946,3949 1)what material is used to make twisted pair cable? ->a twisted pair is consists of two insulated copper wires,typically about 1 mm. 2)what material is used to make coaxial cable? ->a coaxial cable is consists of a stiff copper wire as the core,surrounded by an insulating material. 3)on which factor the bandwidth of twisted pair cable depends? ->the bandwidth of twisted pair cable is depends on thickness of wire and distance travelled. 4)on which factor the bandwidth of coaxial cable depends? ->the bandwidth of coaxial cable is depends on cable quality,length and SNR of data signal. 5)what is the most common application of twisted pair? ->the most common application of twisted pair is telephone system. 6)what are the key components of of an optical transmission system? ->the key components of an optical transmission system are- 1.light source 2.transmission medium 3.detector 7)what are the uses of microwave communication? ->microwave communication is so widely used in long distance telephone communication,mobile phones,television distribution. 8)what are the uses of infrared communication? ->the remote controls used on television,VCRs and stereos all use infrared communication. 9)what is the major drawback of infrared communication ? ->the major drawback of infrared communication is they do not pass through solid objects. 10)what does the construction and shielding of coaxial cable give it? ->the construction and shielding of coaxial cable gives it good combination of high bandwidth and excellent noise immunity.
3955,3934,3935,3936,3926,3932,3931,3950,3953
ReplyDeleteQ1)What are the two major classes of transmission media?
->1)Guided Media 2)Unguided Media
Q2)What happens if the wires of twisted pair cables are not parallel?
->Signal set by the sender on one of the wires,interfarence(noise) & crosstalk may affect both wires create unwanted signals.
Q3)What are te full formof
1)UTP
2)STP
->1)Unshield Twisted Pair
2)shield Twisted Pair
Q4)Which connector are used to connect unshield twisted pair cables?
->RJ45(Register Jack 45)
Q5)Why RJ45 is called as keyed connector?
->Because this connector can be inesrted only in one way.
Q6)What is application of unshield twisted pair cables if the data rate is
1)100Mbps 2)<0.1Mbps
->1)LAN 2)Telephone
7)Give the way to measure performances of twisted pair cables?
->The way to measure performances of twisted pair cables is to compare attenuation verses frequency and distance.
Q8)What is 'Gague'?
-?Gauge is a measure of the thickness of the wire.
Q9)List the categories of unsheild twisted pair cables?
->1)CAT1 2)CAT2 3)CAT3 4)CAT4 5)CAT5E 6)CAT6 7)CAT7
Q10)Why twisted pair cables are used in telephone lines?
->Twisted pair cables are used in telephones lines to provide voice channels and data channels.
Q11)What is full form of BNC connector?
->Bayone-Neil-Concelman connector.
Q12)On which ratings coaxial cables are categories?
->Radio Government (RG) ratings.
Q13)List categories of coaxial cables?
->1)RG-58 2)RG-59 3)RG-11
Q14)How many voice channels can a single coaxial network can carry?
->10,000 voice signals.
Q15)How much digital data is been carried by a single coaxial cables?
->Upto 600Mbps
Q16)Application of coaxial cables?
->1)Cable TV 2)Thin ethernet 3)Thick ethernet.
Q17)What are two major modes of fibre optic ables?
->1)Multimode 2)Singlemode
Q18)What is multimode?
->Multiple beams from light source move through the core in different path is called multimode.
Q19)What are the two type of multimode fibre optical cables?
->1)Step-index fibre optic cable
2)Graded-index fibre optic cable.
20)What is full form
1)SC 2)ST
->1)Subscriber channel connector
2)Straight-tip connector.
Q21)List advantages of fibre optic cables?
->1)Higher bandwidth
2)less signal attenuation
3)Immunity to elctromagnetic interference
4)Resistance to corrosive material
5)Light weight
6)Greater immunity to tapping
Q22)List disadvantages of fibre optic cable?
->1)Installation to maintenanace
2)Unidirectional light propogation
3)cost
Q23)What are three ways of propogation in wireless/unguided transmission media?
->1)Ground propogation
2)Sky propogation
3)Line-of-sight propogation
Q24)What is range of:
a)VLF Band
b)UHF Band
c)EHF Band
->1)3-30kHz
2)300Mhz-3GHz
3)30-300GHz
Q25)"Radio waves are omnidirectional" state true false?
->True
Q26)Application of microwaves?
->1)Cellular phones
2)Satallite networks
3)LAN'S
Q27)Micrwaves needs_______________antenna
a)Multidirectional b)Unidirectional c)Omnidirectional d)None of above
->b)Unidirectional.
Q1:what are the two types of transmission media?
ReplyDeleteAns:the transmission media is classified into two types:
(1)guided
(2)unguided
Q2:how is guided medium classified?
Ans:the guided media classified as:
(1)twisted pair cable
(2)coaxial cable
(3)fiber-optic cable
Q3:list application of UTP.
Ans:(1)telephone system,basic rate interface in ISDN.
(2)token ring networks.
(3)fast and gigabit ethernet.
(4)ethernet LAN,telephony,video.
Q4:list the medium used for line of sight communication.
Ans:infrared waves are widely used for short-range,line-of-sight communication like remote controls used on T.V,V.C.R and stereos.
Q5:list the purpose of 4 wires used in CAT5/6 cables.
Ans:these wires are twisted into 4 pairs of wires,each pair has a common color theme.one wire in the pair has a solid colored wire and the other being a white wire with a colored stripe.the wire paire are:
(1):Orange(O)and White/Orange (o or O/)
(2):Green(G)and White/Green (g or G/)
(3):Blue(B)and White/Blue (b or B/)
(4):Brown(Br)and White/Brown (br or BR/)
Q6:what is crimping?
Ans:crimping is the process of connecting the wire to the connector.A special purpose tool called crimping tool is used to join the cable and the connector.
Q1. What is ARQ?
ReplyDelete-> Automatic Repeat Request.
Q2. What are the types of transmission media?
->Guided media and Unguided media .
Q3. What is unit of S/N ratio?
-> decibels(dB)
Q4. List key components of optical transmission.
->light source, transmission media, detector.
Q5. Define chromatic dispersion.
->light pulses sent down a fiber spread out in length as they propagate. This spreading is called chromatic dispersion.
Q6. What is GEO?
-> Geostationary Earth Orbit.
Q7. Nyquist's theorem.
-> max data rate =2 H log2 V bits/sec
Q8. List basic categories of multiplexing.
->1)FDM
2)TDM
Q9. What is cross over cable?
->This are mostly used to connect to host directly.
Q10. Types of OFC.
-> (i)single mode (ii)multimode
Q11. Define fiber nodes
->The electro-optical converters that interface between the optical and electrical parts of the system are called fiber nodes.
Q12. Application of twisted pair cable.
->i)telephone system
ii)low cost
iii)widely used
Q13. Use of coaxial cable .
-> it is still widely used for television and metropolitan area networks.
Q14. What is formula for Attenuation in dB?
-> Attenuation in dB=10 log10 × (transmitted power/received power)
Roll no.-3910,3916,3922,3927,3906,3944
DeleteFor all above questions roll no.
DeleteThis comment has been removed by the author.
ReplyDeleteRoll no.3903
ReplyDeleteQ1.List guided transmission media.
Ans.
1-Magnetic Media
2-Twisted Pairs
3-Coaxial Cable
4-Power Lines
5-Fiber Optics
Q2.State colour code scheme for T568A twisted pair cable.
Ans.
*Pin* --- *Wire color*
1. White/green
2. Green
3. White/orange
4. Blue
5. White/blue
6. Orange
7. White/brown
8. Brown
Q3.What is the use of crossover cable?
Ans.
Crossover cables are most commonly used to connect two hosts directly, i.e., peer to peer connections.
Roll no.3928
ReplyDeleteQ1.What are types of twisted pair cables?
Ans.
1)Unshielded Twisted Pair(UTP)
2)Shielded Twisted Pair(STP)
Q2.What is type of cabling?
Ans.
1)Straight through cable
2)Crossover cable
Q3.The BNC connector is used with________.
Ans.Coaxial cable.
Rollno.3959,3962,3964,3945
ReplyDeletecomputer networking
Q1.what are the functions of data link layer?
Ans :- the data link layer has a number of specific function it can carry out. these function include
1. providing a well defined service interface to the network layer
2. dealing with transmission error
3. regulating the flow of data so that slow recievers are not swamped by fast senders.
Q2. what is unacknowledged connectionless service?
Ans :- unacknowledged connectionless service consists of having the source machine send Independent frame to the destination machine without having the destination machine acknowledgement them.
Q3. what is character stuffing?
Ans :- The senders data link layer insert special escape byte (ESC) just before is "accidental" flag by in the data.The data link layer on the receiving end remove ESC byte before the data are given to network layer.This technique is called as byte stuffing or character stuffing.
Q4. what is the major disadvantages of flag bytes with byte stuffing?
Ans :- A major disadvantage of using this framing method is that it is closely tied to the use of 8 bit characters,not all characters codes use 8 bit character.
Q5. what is the hamming distance?
Ans :- number of bit positions in which two codewords differ is called the hamming distance.
Q6. how many errors can hamming code correct?
Ans :- hamming codes can correct single error.
Q7. what are stop and wait?
Ans :- protocols in which the sender sends one frame and then waits for an acknowledgement before proceeding are called stop and wait.
Q8. what is PAR?
Ans :- Protocols in which the sender wait for a positive acknowledgement before advancing to the next date item are often called PAR (positive acknowledgement with the retransmission).
Q9. what is piggy backing?
Ans :- the technique of temporarily delaying outgoing acknowledgement so that they can be hooked onto the next outgoing data frame is known as piggy backing.
Q10. what are the two basic approaches for dealing with error in the presence of pipelining?
Ans :- 1. go back n and selective repeat are the two basic approaches for a dealing with errors in the presence of pipelining.no:3959,3962,3964,3945
Roll no. 3959,3962,3964,3945
ReplyDeletechapter 4
computer networking
Q1. what is called as local loop?
Ans :-
2 wire connection between each subscribers the telephone and the end office are the known in the trade as the local loop.
Q2. what are the major component of telephone system
Ans :- 1. local loop (analogue twisted pair going into houses and businesses)
2. trunks ( digital fibre optics connecting the switching offices).
3. switching offices (where calls are removed from one trunk to another).
Q3. what are toll offices?
Ans :- each end office has a number of outgoing lines to one or more nearby switching Centres is called toll offices.
Q4. what are tall connecting trunks?
Ans :- the lines about going from and office to more than one near by switching Centre called the toll connecting trunks.
Q5. what are the problems from which transmission line suffers?
Ans :- 1. attenuation
2. delay distortion
3. noise
Q6. what is attenuation?
Ans :- attenuation is the loss of energy as a signal propogates outward.The loss is expressed in a decibels per kilometre.
Q7. How distortion take place?
Ans :- to make things were the different fourier components also propagate at a different speed in the wire.The speed difference leads to distortion of the signal received at the other end.
Q8. what is noise?
Ans :- It is unwanted energy from sources other than the transmitter.
Q9. what is called as QPSK?
Ans :- It is quadrature phase shift keying.
Q10. what is called full duplex?
Ans :- A connection that allows traffic in both directions to simultaneously is called as full duplex.
3941,3952
ReplyDelete1) what is common application of twisted pair cable?
-> telephone system.
2) what are the two type of twisted pair cable?
->utp(unshielded twisted pair) and
stp(shielded twisted pair).
3)on which facter bandwidth of coaxial cable depends?
->the bandwidth of coaxial cable depends on cable quality,length and snr of data singnal.
4)what are the key components of an optical transmission system?
->an optical transmission system has three key components - light source, transmission medium and detector.
5)what is major drawback of infrared communication?
->the major drawback of infrared communication is they do not pass through solid objects.
3905,3930,3946,3949
ReplyDelete1)what material is used to make twisted pair cable?
->a twisted pair is consists of two insulated copper wires,typically about 1 mm.
2)what material is used to make coaxial cable?
->a coaxial cable is consists of a stiff copper wire as the core,surrounded by an insulating material.
3)on which factor the bandwidth of twisted pair cable depends?
->the bandwidth of twisted pair cable is depends on thickness of wire and distance travelled.
4)on which factor the bandwidth of coaxial cable depends?
->the bandwidth of coaxial cable is depends on cable quality,length and SNR of data signal.
5)what is the most common application of twisted pair?
->the most common application of twisted pair is telephone system.
6)what are the key components of of an optical transmission system?
->the key components of an optical transmission system are-
1.light source
2.transmission medium
3.detector
7)what are the uses of microwave communication?
->microwave communication is so widely used in long distance telephone communication,mobile phones,television distribution.
8)what are the uses of infrared communication?
->the remote controls used on television,VCRs and stereos all use infrared communication.
9)what is the major drawback of infrared communication ?
->the major drawback of infrared communication is they do not pass through solid objects.
10)what does the construction and shielding of coaxial cable give it?
->the construction and shielding of coaxial cable gives it good combination of high bandwidth and excellent noise immunity.