This document contains 4 sets of objective exam questions for a Wireless Communications and Networks course. Each set contains 10 multiple choice questions and 10 fill-in-the-blank questions testing concepts related to wireless communication techniques such as equalization, diversity, spread spectrum systems, and wireless network standards and protocols. The questions cover topics like channel impairments, error control coding, equalizer implementations, quality of service in wireless LANs, and Bluetooth technology.

1. Cont…..2
Code No: A80454 Set No. 1
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
B.Tech. IV Year II Sem., II MID -Term Examinations, April-2019
WIRELESS COMMUNICATIONS AND NETWORKS
Objective Exam
Name: Hall Ticket No.
Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 10.
I. Choose the correct alternative:
1. The main problem with direct RF pulse system is that it is subject to interference and .[
a)Power consumption b) Noise c) speed d)all of these
]
2. The advantage of a spread spectrum system is that, while the probing signal may be wideband, it is
possible to detect the transmitting signal using a _ receiver preceded by a wideband mixer.
[ ]
a)narrowband b)Wideband c) low power d)high speed
3. Mobile radio channels impairments cause the signal at the receiver to significantly as
compared to AWGN channels. [ ]
a)Loss b) be noisy c) weaken d) distort or fade
4. technique is used to compensate for fading channel impairments, and is usually
implemented by using two or more receiving antennas. [ ]
a)Equalization b)Channel coding c)Diversity d)All of these
5. In a broad sense, the term can be used to describe any signal processing operation that
minimizes ISI. [ ]
a)Equalization b) Channel coding c) Diversity d) All of these
6. A linear equalizer can be implemented as an filter. [ ]
a)Low pass b)high pass c)IIR d) FIR
7. WLANS offer typically QoS. [ ]
a)Higher b) lower c)medium d)very high
8. MAC layer has to control . [ ]
a)Medium access b) authentication c) power conservation d)All of these
9. All devices using the same hopping sequence with the same phase form a_ . [ ]
a)Network b) station c) piconet d) LAN
10. The IEEE 802.11 standard only covers the PHY layer and the layer. [ ]
a)MAC b)Application c) network d) transport
A

2. Code No: A80454 :2: Set No. 1
II Fill in the Blanks:
11. A commonly used multipath model is an independent fading 2-ray model.
12. It is often useful to simulate channels in hardware or software.
13. ISI stands for .
14. Based on classical equalization theory, the most common cost function is the
between the desired signal and the output of the equalizer.
15. Two main advantages of the lattice equalizer is its numerical stability and _ .
16. Space diversity, also known as _ , is one of the most popular forms of diversity used
in wireless systems.
17. PSTN stands for .
18. MAHO stands for .
19. Bluetooth is a based technology.
20. In a piconet we have one device acting as a master; all other devices (up to 7) act as _.
-oOo-

3. Cont…..2
Code No: A80454 Set No. 2
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
B.Tech. IV Year II Sem., II MID -Term Examinations, April-2019
WIRELESS COMMUNICATIONS AND NETWORKS
Objective Exam
Name: Hall Ticket No.
Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 10.
I. Choose the correct alternative:
1. technique is used to compensate for fading channel impairments, and is usually
implemented by using two or more receiving antennas. [
a)Equalization b)Channel coding c)Diversity d)All of these
]
2. In a broad sense, the term can be used to describe any signal processing operation that
minimizes ISI. [ ]
a)Equalization b) Channel coding c) Diversity d) All of these
3. A linear equalizer can be implemented as an filter. [ ]
a)Low pass b)high pass c)IIR d) FIR
4. WLANS offer typically QoS. [ ]
a)Higher b) lower c)medium d)very high
5. MAC layer has to control . [ ]
a)Medium access b) authentication c) power conservation d)All of these
6. All devices using the same hopping sequence with the same phase form a_ . [ ]
a)Network b) station c) piconet d) LAN
7. The IEEE 802.11 standard only covers the PHY layer and the layer. [ ]
a)MAC b)Application c) network d) transport
8. The main problem with direct RF pulse system is that it is subject to interference and .[ ]
a)Power consumption b) Noise c) speed d)all of these
9. The advantage of a spread spectrum system is that, while the probing signal may be wideband, it is
possible to detect the transmitting signal using a _ receiver preceded by a wideband mixer.
[ ]
a)narrowband b)Wideband c) low power d)high speed
10. Mobile radio channels impairments cause the signal at the receiver to significantly as
compared to AWGN channels. [ ]
a)Loss b) be noisy c) weaken d) distort or fade
A

4. Code No: A80454 :2: Set No. 2
II Fill in the Blanks:
11. Based on classical equalization theory, the most common cost function is the
between the desired signal and the output of the equalizer.
12. Two main advantages of the lattice equalizer is its numerical stability and _ .
13. Space diversity, also known as _ , is one of the most popular forms of diversity used
in wireless systems.
14. PSTN stands for .
15. MAHO stands for .
16. Bluetooth is a based technology.
17. In a piconet we have one device acting as a master; all other devices (up to 7) act as _.
18. A commonly used multipath model is an independent fading 2-ray model.
19. It is often useful to simulate channels in hardware or software.
20. ISI stands for .
-oOo-

5. Cont…..2
Code No: A80454 Set No. 3
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
B.Tech. IV Year II Sem., II MID -Term Examinations, April-2019
WIRELESS COMMUNICATIONS AND NETWORKS
Objective Exam
Name: Hall Ticket No.
Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 10.
I.
1.
Choose the correct alternative:
A linear equalizer can be implemented as an filter. [ ]
a)Low pass b)high pass c)IIR d) FIR
2. WLANS offer typically QoS.
a)Higher b) lower c)medium d)very high
[ ]
3. MAC layer has to control .
a)Medium access b) authentication c) power conservation d)All of these
[ ]
4. All devices using the same hopping sequence with the same phase form a_ . [ ]
a)Network b) station c) piconet d) LAN
5. The IEEE 802.11 standard only covers the PHY layer and the layer. [ ]
a)MAC b)Application c) network d) transport
6. The main problem with direct RF pulse system is that it is subject to interference and .[ ]
a)Power consumption b) Noise c) speed d)all of these
7. The advantage of a spread spectrum system is that, while the probing signal may be wideband, it is
possible to detect the transmitting signal using a _ receiver preceded by a wideband mixer.
[ ]
a)narrowband b)Wideband c) low power d)high speed
8. Mobile radio channels impairments cause the signal at the receiver to significantly as
compared to AWGN channels. [ ]
a)Loss b) be noisy c) weaken d) distort or fade
9. technique is used to compensate for fading channel impairments, and is usually
implemented by using two or more receiving antennas. [ ]
a)Equalization b)Channel coding c)Diversity d)All of these
10. In a broad sense, the term can be used to describe any signal processing operation that
minimizes ISI. [ ]
a)Equalization b) Channel coding c) Diversity d) All of these
A

6. Code No: A80454 :2: Set No. 3
II Fill in the Blanks:
11. Space diversity, also known as _ , is one of the most popular forms of diversity used
in wireless systems.
12. PSTN stands for .
13. MAHO stands for .
14. Bluetooth is a based technology.
15. In a piconet we have one device acting as a master; all other devices (up to 7) act as _.
16. A commonly used multipath model is an independent fading 2-ray model.
17. It is often useful to simulate channels in hardware or software.
18. ISI stands for .
19. Based on classical equalization theory, the most common cost function is the
between the desired signal and the output of the equalizer.
20. Two main advantages of the lattice equalizer is its numerical stability and _ .
-oOo-

7. Cont…..2
Code No: A80454 Set No. 4
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
B.Tech. IV Year II Sem., II MID -Term Examinations, April-2019
WIRELESS COMMUNICATIONS AND NETWORKS
Objective Exam
Name: Hall Ticket No.
Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 10.
I. Choose the correct alternative:
1. MAC layer has to control . [ ]
a)Medium access b) authentication c) power conservation d)All of these
2. All devices using the same hopping sequence with the same phase form a_ . [ ]
a)Network b) station c) piconet d) LAN
3. The IEEE 802.11 standard only covers the PHY layer and the layer. [ ]
a)MAC b)Application c) network d) transport
4. The main problem with direct RF pulse system is that it is subject to interference and .[ ]
a)Power consumption b) Noise c) speed d)all of these
5. The advantage of a spread spectrum system is that, while the probing signal may be wideband, it is
possible to detect the transmitting signal using a _ receiver preceded by a wideband mixer.
[ ]
a)narrowband b)Wideband c) low power d)high speed
6. Mobile radio channels impairments cause the signal at the receiver to significantly as
compared to AWGN channels. [ ]
a)Loss b) be noisy c) weaken d) distort or fade
7. technique is used to compensate for fading channel impairments, and is usually
implemented by using two or more receiving antennas. [ ]
a)Equalization b)Channel coding c)Diversity d)All of these
8. In a broad sense, the term can be used to describe any signal processing operation that
minimizes ISI. [ ]
a)Equalization b) Channel coding c) Diversity d) All of these
9. A linear equalizer can be implemented as an filter. [ ]
a)Low pass b)high pass c)IIR d) FIR
10. WLANS offer typically QoS. [ ]
a)Higher b) lower c)medium d)very high
A

8. Code
II
No: A80454 :2: Set No. 4
Fill in the Blanks:
11. MAHO stands for .
12. Bluetooth is a based technology.
13. In a piconet we have one device acting as a master; all other devices (up to 7) act as _.
14. A commonly used multipath model is an independent fading 2-ray model.
15. It is often useful to simulate channels in hardware or software.
16. ISI stands for .
17. Based on classical equalization theory, the most common cost function is the
between the desired signal and the output of the equalizer.
18. Two main advantages of the lattice equalizer is its numerical stability and _ .
19. Space diversity, also known as _ , is one of the most popular forms of diversity used
in wireless systems.
20. PSTN stands for .
-oOo-