The payment was collected by the hardworking salesman.
A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.
Question 4Single Answer
I had to stop all my work to complete this project.
A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me
Question 5Single Answer
Passage :
Direction : Question below has two blanks, each blank indicting that some thing has been omitted. Choose the word for each blank which best fits the meaning of the sentence as a whole.
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
A
presented , stay
B
introduced , keep
C
announce , make
D
created , let
E
proclaimed , hold
Question 6Single Answer
Passage :
Direction : The five items in this section consists of a word or group of words followed by four words as (a), (b), (c) and (d). Select the word which is nearly opposite to the meaning of the original word or group of words and mark your response as (a), (b), (c) and (d), as the case may be, in your Answer Sheet.
Assets
A
liabilities
B
responsibilities
C
estates
D
profits
Question 7Single Answer
Passage :
Direction : In the question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it
Affidavit
A
Affirmation
B
Slander
C
Oath
D
Testimony
Question 8Single Answer
Passage :
Direction: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it
Hollow
A
Alveolate
B
Cleft
C
Cavernous
D
Solid
Question 9Single Answer
Passage :
Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it
Cosset
A
Ignoreb
B
Close
C
Caress
D
Fondle
Question 10Single Answer
Passage :
Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it
Ogle
A
Leer
B
Gaze
C
Ignore
D
Gawk
Question 11Single Answer
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
A
Two
B
Three
C
Five
D
Four
E
None of these
Question 12Single Answer
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
A
True
B
False
C
Uncertain
D
None
Question 13Single Answer
If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.
A
A
B
E
C
T
D
X
E
Y
Question 14Single Answer
How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?
A
None
B
One
C
Two
D
Three
E
More than three
Question 15Single Answer
How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?
A
None
B
One
C
Two
D
Three
E
More than three
Question 16Single Answer
How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?
A
None
B
One
C
Two
D
Three
E
More than three
Question 17Single Answer
Passage :
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .
Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?
A
X
B
W
C
I
D
H
Question 18Single Answer
Passage :
Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?
A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG
Question 19Single Answer
Passage :
Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?
A
AND
B
FOR
C
THE
D
BIG
E
SUM
Question 20Single Answer
Passage :
Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?
A
None
B
One
C
Two
D
Three
E
Four
Question 21Single Answer
Passage :
Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?
A
Two
B
Five
C
Six
D
Nine
E
Three
Question 22Single Answer
Passage :
Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
If in each of the given words, each of the consonant is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will no vowels appear?
A
None
B
One
C
Two
D
Three
E
More than three
Question 23Single Answer
Passage :
Direction : Following question is based on five words given below: BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)
If the third alphabet in each of the words is changed to the next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed?
A
None
B
One
C
Two
D
Three
E
Four
Question 24Single Answer
Passage :
Direction : Following question is based on five words given below: BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)
If the position of the first and the second alphabets of each of the words are interchanged, which of the following will form a meaningful English word?
A
Both CAT and OWN
B
Both BRU and INK
C
Only CAT
D
Only INK
E
Only LEG
Question 25Single Answer
Passage :
Direction: Following question is based on five words given below: BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)
If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be exactly in the middle of the five words?
A
OWN
B
LEG
C
BRU
D
CAT
E
INK
Question 26Single Answer
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
A
51:52
B
52:53
C
51:53
D
52:55
Question 27Single Answer
Which of the following numbers is irrational ?
A
√49
B
0.125
C
√2
D
22/7
Question 28Single Answer
356 x 936 – 356 x 836 = ?
A
35600
B
34500
C
9630
D
93600
Question 29Single Answer
Arrange in descending order: 5/8, 7/10, 3/4
A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4
Question 30Single Answer
What is (3^{4} times 9^{2}) ?
A
36
B
38
C
310
D
96
Question 31Single Answer
If 34X-2 = 729, then find the value of X.
A
4
B
3
C
2
D
5
Question 32Single Answer
Convert 0.6 into fraction ?
A
3/5
B
2/3
C
4/5
Question 33Single Answer
The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?
A
169
B
36
C
196
D
Can not say
Question 34Single Answer
If a and b are positive integers, such that ab = 125, then (a-b)a+b-4 = ?
A
16
B
25
C
28
D
30
Question 35Single Answer
If x*y = x2 + y2 – xy, then value of 9*11 is
A
93
B
103
C
60.5
D
121
Question 36Single Answer
Which is greater ?
A
15/16
B
17/18
C
Equal
D
Cannot compare
Question 37Single Answer
If sum of two numbers is 42 and their product is 437, then find their difference.
A
3
B
4
C
5
D
7
Question 38Single Answer
Passage :
information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.
We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values
Chemistry but not in Physics.
A
318
B
198
C
213
D
206
Question 39Single Answer
Passage :
Direction: information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.
We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values
Physics or Maths but not in Chemistry.
A
558
B
718
C
628
D
None of these
Question 40Single Answer
Passage :
For the next four question that follow:
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.
Let x% people read all the three newspapers.
Since 8% people do not read any newspapers.
(x – 24) + (x – 7) + (x + 4) + (30 – x) + (36 – x) + (28 – x) + x = 92
→ x + 98 – 31 = 92
→ x = 92 – 67 = 25
What is the percentage of persons who read all the three papers ?
A
20%
B
25%
C
30%
D
40%
Technical Subject (Telecom)
Question 41Single Answer
Frequency selective fading occurs in a wireless channel when which condition is satisfied?
A
Signal bandwidth is less than coherence bandwidth
B
Signal bandwidth is greater than coherence bandwidth
C
Doppler spread is negligible
D
Channel is line-of-sight dominated
Question 42Single Answer
Which type of fading is mainly caused due to relative motion between transmitter and receiver?
A
Fast fading
B
Slow fading
C
Shadow fading
D
Log-normal fading
Question 43Single Answer
Doppler shift in a mobile communication system becomes maximum when the mobile is moving at what angle relative to the incident wave?
A
0 degrees
B
30 degrees
C
60 degrees
D
90 degrees
Question 44Single Answer
Which parameter defines the time duration over which the channel impulse response remains approximately constant?
A
Coherence bandwidth
B
Delay spread
C
Doppler frequency
D
Coherence time
Question 45Single Answer
The Rake receiver in CDMA systems primarily exploits which propagation characteristic?
A
Time diversity due to multipath
B
Frequency diversity
C
Polarization diversity
D
Spatial diversity
Question 46Single Answer
In a Rayleigh fading environment, the average received signal power follows which distribution?
A
Exponential
B
Log-normal
C
Gaussian
D
Uniform
Question 47Single Answer
Which multiple access technique assigns orthogonal subcarriers dynamically to users?
A
FDMA
B
TDMA
C
OFDMA
D
CDMA
Question 48Single Answer
In TDMA systems, interference between users mainly arises due to which impairment?
A
Near-far effect
B
Doppler shift
C
Timing jitter
D
Inter-symbol interference
Question 49Single Answer
The near-far problem is a major limitation in which multiple access technique?
A
CDMA
B
TDMA
C
FDMA
D
OFDMA
Question 50Single Answer
Which antenna parameter defines the horizontal radiation pattern of a base station antenna?
A
Elevation beamwidth
B
Electrical tilt
C
Azimuth beamwidth
D
Mechanical tilt
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Technical Subject (Telecom)
Question 51Single Answer
Electrical tilt in a mobile antenna system is achieved by changing which characteristic?
A
Physical antenna orientation
B
Antenna height
C
Feed phase distribution
D
Transmit frequency
Question 52Single Answer
High VSWR in a base station antenna system primarily leads to which effect?
A
Increased antenna gain
B
Power reflection and PA stress
C
Reduced feeder loss
D
Improved coverage
Question 53Single Answer
Mechanical tilt of an antenna mainly affects which coverage aspect?
A
Carrier frequency
B
Receiver sensitivity
C
Polarization mismatch
D
Cell radius and overlap
Question 54Single Answer
Which propagation model is most suitable for urban macrocellular planning below 1500 MHz?
A
Free space model
B
Okumura model
C
Hata model
D
COST 231 Walfisch-Ikegami model
Question 55Single Answer
COST 231 extension of Hata model is applicable up to which frequency range?
A
900 MHz
B
1500 MHz
C
3500 MHz
D
2000 MHz
Question 56Single Answer
The Okumura model is primarily based on which approach?
A
Deterministic ray tracing
B
Analytical diffraction equations
C
Stochastic channel modeling
D
Empirical field measurements
Question 57Single Answer
Increase in antenna electrical downtilt mainly helps in reducing which network issue?
A
Handover delay
B
Co-channel interference
C
Doppler spread
D
Shadow fading
Question 58Single Answer
Beamwidth of a base station antenna is inversely proportional to which parameter?
A
Antenna aperture size
B
Operating bandwidth
C
Antenna height
D
Transmit power
Question 59Single Answer
Which fading distribution is more appropriate when a dominant LOS component exists?
A
Rayleigh
B
Rician
C
Nakagami
D
Log-normal
Question 60Single Answer
The delay spread of a wireless channel directly affects which system parameter?
A
Coherence bandwidth
B
Carrier frequency offset
C
Path loss exponent
D
Doppler frequency
Question 61Single Answer
Coherence bandwidth of a wireless channel is inversely proportional to which parameter?
A
Doppler shift
B
Delay spread
C
Mobile velocity
D
Carrier frequency
Question 62Single Answer
Which type of diversity technique is inherently exploited by a Rake receiver?
A
Frequency diversity
B
Time diversity
C
Space diversity
D
Polarization diversity
Question 63Single Answer
In CDMA systems, orthogonality between users is ideally maintained in which channel condition?
A
Multipath fading channel
B
Frequency selective channel
C
AWGN channel
D
Shadow fading environment
Question 64Single Answer
The main limitation of FDMA in cellular systems is inefficient utilization of which resource?
A
Time
B
Code
C
Frequency spectrum
D
Power
Question 65Single Answer
Fast fading is also referred to as which type of fading?
A
Long-term fading
B
Shadow fading
C
Log-normal fading
D
Short-term fading
Question 66Single Answer
Which antenna parameter primarily controls inter-cell interference in cellular networks?
A
Azimuth angle
B
Beamwidth
C
Polarization
D
Downtilt
Question 67Single Answer
Electrical tilt differs from mechanical tilt mainly because it does not affect which parameter?
A
Antenna phase
B
Physical orientation of antenna
C
Antenna radiation center
D
Vertical radiation pattern
Question 68Single Answer
A VSWR value of 1.5:1 indicates approximately what percentage of reflected power?
A
0.2 percent
B
2 percent
C
4 percent
D
10 percent
Question 69Single Answer
High VSWR mainly causes degradation of which network element?
A
Baseband unit
B
Power amplifier
C
Duplexer
D
Receiver LNA
Question 70Single Answer
The Okumura model requires correction factors for which two parameters explicitly?
A
Frequency and distance
B
Mobile velocity and frequency
C
Antenna height and terrain
D
Noise figure and bandwidth
Question 71Single Answer
Which propagation model is suitable for frequencies above 1500 MHz in urban environments?
A
COST 231 Hata model
B
Okumura model
C
Hata model
D
Free space model
Question 72Single Answer
Which multiple access technique is inherently resistant to narrowband interference?
A
FDMA
B
CDMA
C
TDMA
D
OFDMA
Question 73Single Answer
The near-far problem in CDMA is mitigated primarily by which mechanism?
A
Power control
B
Frequency hopping
C
Time synchronization
D
Channel coding
Question 74Single Answer
In OFDMA, resource allocation is performed in which domain?
A
Only time
B
Only frequency
C
Time and frequency
D
Code domain
Question 75Single Answer
Doppler shift becomes zero when the mobile moves at what angle relative to wave arrival?
A
0 degrees
B
30 degrees
C
60 degrees
D
90 degrees
Question 76Single Answer
Which fading distribution models shadowing effects in wireless channels?
A
Rayleigh
B
Rician
C
Log-normal
D
Nakagami
Question 77Single Answer
Which antenna beamwidth parameter determines sector coverage in a cellular cell?
A
Elevation beamwidth
B
Azimuth beamwidth
C
Polarization angle
D
Front-to-back ratio
Question 78Single Answer
Increasing electrical downtilt generally results in which effect?
A
Increased cell radius
B
Increased fading margin
C
Higher Doppler shift
D
Reduced cell overlap
Question 79Single Answer
Coherence time of the channel reduces when which parameter increases?
A
Mobile velocity
B
Transmit power
C
Antenna height
D
Delay spread
Question 80Single Answer
In a frequency selective channel, which equalization technique is commonly required?
A
Adaptive equalization
B
Automatic gain control
C
Power control
D
Diversity combining
Question 81Single Answer
Which access technique forms the basis of LTE downlink transmission?
A
CDMA
B
TDMA
C
OFDMA
D
FDMA
Question 82Single Answer
Multipath propagation mainly causes which impairment in digital communication?
A
Noise enhancement
B
Inter-symbol interference
C
Phase noise
D
Carrier frequency offset
Question 83Single Answer
In Rayleigh fading, the probability of deep fades is compared to Rician fading?
A
Higher
B
Same
C
Lower
D
Zero
Question 84Single Answer
Which model is considered semi-empirical in nature?
A
Hata model
B
Free space model
C
Two-ray model
D
Friis equation
Question 85Single Answer
In cellular planning, antenna tilt optimization mainly targets improvement of which KPI?
A
Coverage overlap and interference
B
Call drop rate
C
Throughput
D
Core network latency
Question 86Single Answer
Which multiple access scheme uses orthogonal spreading codes?
A
CDMA
B
TDMA
C
FDMA
D
OFDMA
Question 87Single Answer
Rake receiver performance improves with increase in which parameter?
A
Number of resolvable multipath components
B
Doppler frequency
C
Noise bandwidth
D
Shadow fading variance
Question 88Single Answer
Which propagation model is most accurate but complex for practical cellular planning?
A
Hata
B
Okumura
C
Ray tracing model
D
COST 231
Question 89Single Answer
Antenna front-to-back ratio mainly affects which interference scenario?
A
Co-channel interference
B
Adjacent channel interference
C
Back-lobe interference
D
Thermal noise
Question 90Single Answer
Flat fading occurs when the signal bandwidth is how compared to coherence bandwidth?
A
Much larger
B
Equal
C
Random
D
Much smaller
Question 91Single Answer
The primary reason for using sectorized antennas in cellular systems is to reduce which limitation?
A
Path loss
B
Shadow fading
C
Co-channel interference
D
Doppler spread
Question 92Single Answer
In a mobile radio channel, delay spread mainly depends on which environmental factor?
A
Carrier frequency
B
Modulation scheme
C
Transmit power
D
Terrain and obstacles
Question 93Single Answer
Which fading condition causes frequency components of a signal to experience different gains?
A
Flat fading
B
Slow fading
C
Shadow fading
D
Frequency selective fading
Question 94Single Answer
The rake receiver combines multipath components using which combining technique?
A
Selection combining
B
Equal gain combining
C
Maximal ratio combining
D
Switch combining
Question 95Single Answer
The Doppler frequency shift is directly proportional to which parameter?
A
Antenna height
B
Noise bandwidth
C
Carrier frequency
D
Delay spread
Question 96Single Answer
In CDMA systems, spreading gain is defined as the ratio of which two parameters?
A
Bit rate to chip rate
B
Chip rate to bit rate
C
Carrier frequency to bandwidth
D
Signal power to noise power
Question 97Single Answer
Which multiple access technique provides the highest spectral efficiency in broadband systems?
A
FDMA
B
TDMA
C
OFDMA
D
CDMA
Question 98Single Answer
Electrical downtilt is preferred over mechanical downtilt mainly because it allows which advantage?
A
Increased antenna gain
B
Remote and precise control
C
Higher transmit power
D
Reduced feeder loss
Question 99Single Answer
VSWR greater than 2 mainly indicates which antenna system issue?
A
Excessive path loss
B
Polarization mismatch
C
Frequency reuse error
D
Impedance mismatch
Question 100Single Answer
The Okumura model is valid approximately for which frequency range?
A
150 MHz to 1500 MHz
B
30 MHz to 300 MHz
C
900 MHz to 3 GHz
D
Above 2 GHz only
Question 101Single Answer
Hata model is an empirical formulation derived from which original model?
A
Okumura model
B
Two-ray ground model
C
Free space model
D
COST 231 model
Question 102Single Answer
In urban cellular planning, COST 231 model introduces an additional correction factor mainly for which parameter?
A
Mobile height
B
Base station height
C
Metropolitan areas
D
Frequency reuse
Question 103Single Answer
Which fading phenomenon varies over large distances typically hundreds of meters?
A
Fast fading
B
Shadow fading
C
Small-scale fading
D
Doppler fading
Question 104Single Answer
Which parameter defines the angular width between points where antenna gain falls to half power?
A
Front-to-back ratio
B
Side lobe level
C
Antenna tilt
D
Beamwidth
Question 105Single Answer
In TDMA systems, guard time is inserted mainly to mitigate which impairment?
A
Co-channel interference
B
Near-far effect
C
Doppler shift
D
Timing misalignment
Question 106Single Answer
CDMA capacity is said to be interference limited mainly because of which factor?
A
Noise dominance
B
Fixed bandwidth
C
Limited frequency reuse
D
Orthogonality loss
Question 107Single Answer
In OFDMA systems, subcarriers are orthogonal due to which property?
A
Equal frequency spacing
B
Cyclic prefix insertion
C
FFT-based modulation
D
Power control
Question 108Single Answer
Which channel parameter determines whether a channel is fast or slow fading?
A
Delay spread
B
Coherence time
C
Coherence bandwidth
D
Path loss
Question 109Single Answer
Which diversity technique uses multiple antennas at the receiver only?
A
Transmit diversity
B
Receive diversity
C
Space-time coding
D
Polarization diversity
Question 110Single Answer
In Rician fading, the K-factor represents the ratio of which components?
A
Noise power to signal power
B
LOS power to scattered power
C
Reflected power to direct power
D
Doppler power to carrier power
Question 111Single Answer
The primary impact of increasing antenna height at the base station is reduction in which parameter?
A
Doppler spread
B
Path loss
C
Shadow fading variance
D
Noise figure
Question 112Single Answer
Which phenomenon causes rapid fluctuations of signal amplitude over short distances?
A
Shadow fading
B
Path loss
C
Log-normal fading
D
Small-scale fading
Question 113Single Answer
The COST 231 Hata model is applicable mainly for which environment?
A
Rural only
B
Urban and suburban
C
Suburban only
D
Indoor propagation
Question 114Single Answer
Antenna azimuth orientation primarily affects which network performance metric?
A
Handover success rate
B
Noise figure
C
Sector coverage direction
D
Delay spread
Question 115Single Answer
The rake receiver resolves multipath components separated by at least which parameter?
A
Coherence time
B
Chip duration
C
Symbol duration
D
Doppler period
Question 116Single Answer
Which access method allows flexible bandwidth allocation among users?
A
FDMA
B
TDMA
C
CDMA
D
OFDMA
Question 117Single Answer
Which parameter increases when mobile speed increases?
A
Coherence time
B
Doppler spread
C
Delay spread
D
Path loss exponent
Question 118Single Answer
Log-normal shadowing is mainly caused by which physical phenomenon?
A
Obstruction by large objects
B
Reflection
C
Diffraction
D
Thermal noise
Question 119Single Answer
Which model is purely analytical in nature?
A
Okumura
B
Free space path loss
C
COST 231
D
Hata
Question 120Single Answer
Electrical downtilt mainly affects which part of antenna radiation pattern?
A
Horizontal plane
B
Side lobes
C
Vertical plane
D
Back lobes
Question 121Single Answer
In cellular systems, reuse factor directly influences which system parameter?
A
Antenna height
B
Delay spread
C
Doppler frequency
D
System capacity
Question 122Single Answer
Which fading type is independent of frequency bandwidth?
A
Frequency selective fading
B
Delay fading
C
Doppler fading
D
Flat fading
Question 123Single Answer
The main objective of power control in CDMA systems is to combat which issue?
A
Shadow fading
B
Multipath delay
C
Doppler spread
D
Near-far problem
Question 124Single Answer
Which antenna parameter helps in limiting interference behind the antenna?
A
Front-to-back ratio
B
Polarization
C
Beamwidth
D
Downtilt
Question 125Single Answer
In OFDMA, cyclic prefix is mainly used to mitigate which impairment?
A
Doppler shift
B
Inter-symbol interference
C
Noise enhancement
D
Phase noise
Question 126Single Answer
Which propagation phenomenon allows signals to bend around obstacles?
A
Reflection
B
Diffraction
C
Scattering
D
Absorption
Question 127Single Answer
The Okumura model is less suitable for which scenario?
A
Open rural
B
Dense urban
C
Suburban
D
Macrocell planning
Question 128Single Answer
Which multiple access scheme is used in GSM systems?
A
FDMA only
B
TDMA only
C
CDMA
D
FDMA and TDMA
Question 129Single Answer
Increasing antenna beamwidth results in which effect?
A
Increased interference
B
Reduced coverage area
C
Higher antenna gain
D
Improved directivity
Question 130Single Answer
Coherence bandwidth is approximately inversely proportional to which metric?
A
RMS delay spread
B
Doppler spread
C
Mobile speed
D
Carrier frequency
Question 131Single Answer
Which fading model best represents dense urban non-line-of-sight conditions?
A
Rician
B
Nakagami
C
Log-normal
D
Rayleigh
Question 132Single Answer
In mobile communication, handover probability increases mainly due to which factor?
A
Increased antenna gain
B
Increased transmit power
C
Lower Doppler spread
D
Reduced cell size
Question 133Single Answer
Which access technique spreads user data over entire bandwidth?
A
CDMA
B
TDMA
C
FDMA
D
OFDMA
Question 134Single Answer
Electrical tilt is implemented by changing which antenna property?
A
Physical mounting angle
B
Feed cable length
C
Antenna height
D
Phase of radiating elements
Question 135Single Answer
Which factor primarily limits coverage in high-frequency bands?
A
Noise figure
B
Doppler spread
C
Delay spread
D
Increased path loss
Question 136Single Answer
The primary advantage of OFDMA over CDMA is which capability?
A
Resistance to fading
B
Flexible resource allocation
C
Higher spreading gain
D
Reduced Doppler shift
Question 137Single Answer
In cellular planning, cell breathing is mainly associated with which system?
A
GSM
B
CDMA
C
LTE
D
FDMA
Question 138Single Answer
Which antenna parameter affects vertical coverage footprint?
A
Azimuth
B
Polarization
C
Elevation beamwidth
D
Front-to-back ratio
Question 139Single Answer
Which model considers terrain irregularity explicitly?
A
Free space
B
Hata
C
COST 231
D
Okumura
Question 140Single Answer
The main role of diversity techniques is to combat which channel impairment?
A
Noise
B
Fading
C
Interference
D
Path loss
Question 141Single Answer
Which fading effect changes slowly over time and space?
A
Fast fading
B
Shadow fading
C
Small-scale fading
D
Doppler fading
Question 142Single Answer
In CDMA, user separation is achieved primarily by which mechanism?
A
Frequency slots
B
Spreading codes
C
Time slots
D
Subcarriers
Question 143Single Answer
Which propagation effect dominates at lower frequencies?
A
Scattering
B
Absorption
C
Diffraction
D
Penetration loss
Question 144Single Answer
Which antenna tilt method can be adjusted remotely without site visit?
A
Mechanical tilt
B
Manual tilt
C
Electrical tilt
D
Fixed tilt
Question 145Single Answer
Doppler spread is maximum when the mobile moves in which direction?
A
Perpendicular to wave
B
Random direction
C
Circular motion
D
Parallel to wave
Question 146Single Answer
Which access scheme supports multi-user diversity most efficiently?
A
FDMA
B
TDMA
C
OFDMA
D
CDMA
Question 147Single Answer
Which parameter indicates mismatch between antenna and feeder?
A
Antenna gain
B
Beamwidth
C
Polarization
D
VSWR
Question 148Single Answer
The Hata model is applicable primarily for which cell size?
A
Microcell
B
Picocell
C
Femtocell
D
Macrocell
Question 149Single Answer
Which fading phenomenon is independent of user speed?
A
Doppler fading
B
Fast fading
C
Small-scale fading
D
Shadow fading
Question 150Single Answer
In LTE, uplink multiple access is based on which scheme?
A
OFDMA
B
TDMA
C
CDMA
D
SC-FDMA
Question 151Single Answer
Which antenna property reduces spillover radiation?
A
Gain
B
Beamwidth
C
Polarization
D
Downtilt
Question 152Single Answer
Which channel metric determines frequency selectivity?
A
Coherence time
B
Doppler spread
C
Coherence bandwidth
D
Path loss
Question 153Single Answer
The main limitation of mechanical tilt is which factor?
A
High cost
B
Manual adjustment requirement
C
Reduced antenna gain
D
Increased VSWR
Question 154Single Answer
Which fading distribution is most general and flexible?
A
Rayleigh
B
Rician
C
Nakagami
D
Log-normal
Question 155Single Answer
Increasing reuse factor leads to which effect?
A
Higher capacity
B
Lower interference
C
Reduced coverage
D
Increased Doppler
Question 156Single Answer
Which component of a cellular system radiates electromagnetic waves?
A
Antenna
B
RRU
C
BBU
D
Core network
Question 157Single Answer
Which propagation model is least accurate in dense urban areas?
A
COST 231
B
Okumura
C
Hata
D
Free space
Question 158Single Answer
Which fading condition causes entire signal band to fade together?
A
Frequency selective fading
B
Flat fading
C
Shadow fading
D
Doppler fading
Question 159Single Answer
Which parameter mainly governs handover rate?
A
Antenna gain
B
Noise figure
C
Delay spread
D
Cell radius
Question 160Single Answer
The rake receiver improves performance by exploiting which channel property?
A
Frequency hopping
B
Spatial multiplexing
C
Polarization diversity
D
Multipath diversity
Question 161Single Answer
Which access technique allows orthogonality in frequency domain?
A
OFDMA
B
CDMA
C
TDMA
D
FDMA
Question 162Single Answer
Which propagation effect dominates in indoor environments?
A
Diffraction
B
Reflection
C
Scattering
D
Absorption
Question 163Single Answer
Which antenna parameter affects horizontal coverage overlap?
A
VSWR
B
Elevation beamwidth
C
Polarization
D
Azimuth beamwidth
Question 164Single Answer
Which fading is modeled using Gaussian distribution in dB scale?
A
Log-normal
B
Rician
C
Rayleigh
D
Nakagami
Question 165Single Answer
Which parameter directly affects Doppler frequency?
A
Carrier frequency
B
Antenna gain
C
Path loss exponent
D
Delay spread
Question 166Single Answer
Which cellular technology uses rake receivers?
A
GSM
B
Wi-Fi
C
LTE
D
CDMA
Question 167Single Answer
Which access scheme suffers most from timing synchronization issues?
A
TDMA
B
FDMA
C
CDMA
D
OFDMA
Question 168Single Answer
The main objective of antenna tilting is to optimize which network metric?
A
Bit error rate
B
Doppler spread
C
Coverage and interference balance
D
Noise figure
Question 169Single Answer
Which propagation model is best suited for rough initial planning?
A
Free space
B
Ray tracing
C
COST 231
D
Okumura
Question 170Single Answer
Which diversity improves link reliability without extra bandwidth?
A
Frequency diversity
B
Space diversity
C
Time diversity
D
Code diversity
Question 171Single Answer
Which parameter determines inter-symbol interference severity?
A
Delay spread
B
Doppler spread
C
Carrier frequency
D
Antenna height
Question 172Single Answer
Which antenna system parameter impacts both coverage and interference?
A
VSWR
B
Electrical tilt
C
Noise figure
D
Polarization purity
Question 173Single Answer
Which multiple access scheme is power limited?
A
CDMA
B
TDMA
C
FDMA
D
OFDMA
Question 174Single Answer
Which propagation phenomenon increases with higher frequencies?
A
Penetration loss
B
Reflection
C
Diffraction
D
Wave bending
Question 175Single Answer
Which model requires terrain category classification?
A
Free space
B
Okumura
C
Friis
D
Hata
Question 176Single Answer
Which fading type is most detrimental to narrowband systems?
A
Frequency selective fading
B
Flat fading
C
Shadow fading
D
Log-normal fading
Question 177Single Answer
Which antenna metric indicates radiation suppression behind antenna?
A
Gain
B
Beamwidth
C
Polarization
D
Front-to-back ratio
Question 178Single Answer
Which cellular access scheme allows soft handover?
A
GSM
B
FDMA
C
LTE
D
CDMA
Question 179Single Answer
Which propagation model combines empirical data with analytical corrections?
A
Free space
B
COST 231
C
Hata
D
Okumura
Question 180Single Answer
The ultimate goal of antenna optimization in cellular networks is improvement of which parameter?
A
Core latency
B
Billing accuracy
C
Switching efficiency
D
User Quality of Service
Question 181Single Answer
In GSM architecture, which subsystem is responsible for radio resource management and handover control?
A
NSS
B
OSS
C
BSS
D
MSC
Question 182Single Answer
Which GSM interface connects BTS and BSC?
A
A interface
B
Um interface
C
Abis interface
D
Gb interface
Question 183Single Answer
The A interface in GSM connects which two network elements?
A
BSC and MSC
B
BTS and MSC
C
MSC and HLR
D
BSC and BTS
Question 184Single Answer
Which GSM database stores permanent subscriber information?
A
VLR
B
HLR
C
EIR
D
AuC
Question 185Single Answer
Temporary subscriber data during roaming is stored in which GSM element?
A
VLR
B
AuC
C
EIR
D
HLR
Question 186Single Answer
Which GSM element is responsible for authentication and ciphering key generation?
A
AuC
B
VLR
C
MSC
D
EIR
Question 187Single Answer
During GSM call setup, which signalling message is first sent by MS?
A
Assignment request
B
Paging response
C
Channel request
D
Call proceeding
Question 188Single Answer
Which GSM channel carries broadcast system information?
A
SDCCH
B
TCH
C
BCCH
D
FACCH
Question 189Single Answer
Which channel is used to transmit urgent signalling by stealing traffic channel bits?
A
SDCCH
B
SACCH
C
BCCH
D
FACCH
Question 190Single Answer
Which GSM KPI directly reflects call setup failure?
A
Call Drop Rate
B
Handover Success Rate
C
Call Setup Success Rate
D
Traffic Intensity
Question 191Single Answer
In UMTS architecture, which node performs radio resource control functions?
A
RNC
B
GGSN
C
SGSN
D
Node B
Question 192Single Answer
The Iu-CS interface in UMTS connects RNC to which core network element?
A
MSC
B
GGSN
C
SGSN
D
HLR
Question 193Single Answer
Which UMTS interface connects Node B and RNC?
A
Iu
B
Gn
C
Iur
D
Iub
Question 194Single Answer
Soft handover is a key feature of which generation of mobile system?
A
2G
B
5G
C
4G
D
3G
Question 195Single Answer
Which KPI indicates voice quality from subscriber perception?
A
BER
B
Latency
C
Throughput
D
MOS
Question 196Single Answer
LTE architecture eliminates which network element present in 3G?
A
MSC
B
RNC
C
SGSN
D
HLR
Question 197Single Answer
Which LTE node handles both control and user plane at radio level?
A
MME
B
eNodeB
C
PGW
D
SGW
Question 198Single Answer
The S1-MME interface connects eNodeB to which EPC element?
A
MME
B
PGW
C
SGW
D
HSS
Question 199Single Answer
Which LTE interface supports X2-based handover?
A
S1
B
S5
C
X2
D
S11
Question 200Single Answer
Which EPC element is responsible for mobility management?