QUALCOMM 5G ASSOCIATE-LEVEL CERTIFICATION PRACTICE EXAM
200 Questions with Verified Answers and Detailed Explanations
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Section 1: 5G NR Fundamentals (Questions 1-35)
1. What is the maximum theoretical peak data rate for 5G NR as defined by 3GPP?
a) 1 Gbps
b) 5 Gbps
c) 10 Gbps
d) 20 Gbps
Correct Answer: d) 20 Gbps
Explanation: 3GPP defines the peak data rate for 5G NR as up to 20 Gbps downlink and 10 Gbps
uplink, representing a 10x increase over 4G LTE .
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2. Which frequency bands are defined as FR1 (Frequency Range 1) in 5G NR?
a) Sub-1 GHz
b) 410 MHz to 7.125 GHz
c) 24.25 GHz to 52.6 GHz
d) 52.6 GHz to 71 GHz
Correct Answer: b) 410 MHz to 7.125 GHz
,Explanation: FR1 includes frequencies from 410 MHz to 7.125 GHz, covering sub-6 GHz bands.
FR2 covers millimeter wave bands from 24.25 GHz to 52.6 GHz .
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3. Which frequency bands are defined as FR2 (Frequency Range 2) in 5G NR?
a) 410 MHz to 7.125 GHz
b) Sub-3 GHz
c) 24.25 GHz to 52.6 GHz
d) 52.6 GHz to 71 GHz
Correct Answer: c) 24.25 GHz to 52.6 GHz
Explanation: FR2 encompasses millimeter wave (mmWave) bands from 24.25 GHz to 52.6 GHz,
enabling ultra-high bandwidth and capacity .
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4. What is the primary benefit of using millimeter wave (mmWave) spectrum in 5G?
a) Better indoor penetration
b) Wider channel bandwidths (up to 400 MHz)
c) Longer coverage range
d) Lower infrastructure cost
Correct Answer: b) Wider channel bandwidths (up to 400 MHz)
Explanation: mmWave spectrum enables very wide channel bandwidths (up to 400 MHz per
carrier), delivering extremely high data rates. However, it has shorter range and poorer
penetration .
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5. What is the subcarrier spacing (SCS) for 5G NR in FR1?
a) 15 kHz only
b) 15, 30, or 60 kHz
c) 60, 120, or 240 kHz
d) 240 kHz only
Correct Answer: b) 15, 30, or 60 kHz
Explanation: FR1 supports subcarrier spacing of 15 kHz, 30 kHz, and 60 kHz. FR2 supports 60
kHz, 120 kHz, and 240 kHz .
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6. What is the subcarrier spacing (SCS) for 5G NR in FR2?
a) 15 kHz only
b) 15, 30, or 60 kHz
c) 60, 120, or 240 kHz
d) 480 kHz only
Correct Answer: c) 60, 120, or 240 kHz
Explanation: FR2 (mmWave) uses larger subcarrier spacing to handle phase noise and Doppler
effects, with SCS of 60 kHz, 120 kHz, and 240 kHz .
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, 7. What is the duration of a 5G NR slot for 15 kHz subcarrier spacing?
a) 0.5 ms
b) 1 ms
c) 2 ms
d) 5 ms
Correct Answer: b) 1 ms
Explanation: With 15 kHz SCS, one slot contains 14 OFDM symbols and has a duration of 1 ms.
Higher SCS results in proportionally shorter slot durations .
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8. Which 5G deployment option is characterized by 5G NR with an LTE anchor for control plane
(NSA)?
a) Option 2
b) Option 3 (EN-DC)
c) Option 4
d) Option 7
Correct Answer: b) Option 3 (EN-DC)
Explanation: Option 3 is Non-Standalone (NSA) architecture where LTE provides the control
plane anchor and 5G NR adds data capacity (E-UTRA-NR Dual Connectivity or EN-DC) .
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9. Which 5G deployment option is characterized by a standalone 5G NR core (5GC) without LTE
dependency?
200 Questions with Verified Answers and Detailed Explanations
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Section 1: 5G NR Fundamentals (Questions 1-35)
1. What is the maximum theoretical peak data rate for 5G NR as defined by 3GPP?
a) 1 Gbps
b) 5 Gbps
c) 10 Gbps
d) 20 Gbps
Correct Answer: d) 20 Gbps
Explanation: 3GPP defines the peak data rate for 5G NR as up to 20 Gbps downlink and 10 Gbps
uplink, representing a 10x increase over 4G LTE .
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2. Which frequency bands are defined as FR1 (Frequency Range 1) in 5G NR?
a) Sub-1 GHz
b) 410 MHz to 7.125 GHz
c) 24.25 GHz to 52.6 GHz
d) 52.6 GHz to 71 GHz
Correct Answer: b) 410 MHz to 7.125 GHz
,Explanation: FR1 includes frequencies from 410 MHz to 7.125 GHz, covering sub-6 GHz bands.
FR2 covers millimeter wave bands from 24.25 GHz to 52.6 GHz .
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3. Which frequency bands are defined as FR2 (Frequency Range 2) in 5G NR?
a) 410 MHz to 7.125 GHz
b) Sub-3 GHz
c) 24.25 GHz to 52.6 GHz
d) 52.6 GHz to 71 GHz
Correct Answer: c) 24.25 GHz to 52.6 GHz
Explanation: FR2 encompasses millimeter wave (mmWave) bands from 24.25 GHz to 52.6 GHz,
enabling ultra-high bandwidth and capacity .
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4. What is the primary benefit of using millimeter wave (mmWave) spectrum in 5G?
a) Better indoor penetration
b) Wider channel bandwidths (up to 400 MHz)
c) Longer coverage range
d) Lower infrastructure cost
Correct Answer: b) Wider channel bandwidths (up to 400 MHz)
Explanation: mmWave spectrum enables very wide channel bandwidths (up to 400 MHz per
carrier), delivering extremely high data rates. However, it has shorter range and poorer
penetration .
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5. What is the subcarrier spacing (SCS) for 5G NR in FR1?
a) 15 kHz only
b) 15, 30, or 60 kHz
c) 60, 120, or 240 kHz
d) 240 kHz only
Correct Answer: b) 15, 30, or 60 kHz
Explanation: FR1 supports subcarrier spacing of 15 kHz, 30 kHz, and 60 kHz. FR2 supports 60
kHz, 120 kHz, and 240 kHz .
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6. What is the subcarrier spacing (SCS) for 5G NR in FR2?
a) 15 kHz only
b) 15, 30, or 60 kHz
c) 60, 120, or 240 kHz
d) 480 kHz only
Correct Answer: c) 60, 120, or 240 kHz
Explanation: FR2 (mmWave) uses larger subcarrier spacing to handle phase noise and Doppler
effects, with SCS of 60 kHz, 120 kHz, and 240 kHz .
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, 7. What is the duration of a 5G NR slot for 15 kHz subcarrier spacing?
a) 0.5 ms
b) 1 ms
c) 2 ms
d) 5 ms
Correct Answer: b) 1 ms
Explanation: With 15 kHz SCS, one slot contains 14 OFDM symbols and has a duration of 1 ms.
Higher SCS results in proportionally shorter slot durations .
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8. Which 5G deployment option is characterized by 5G NR with an LTE anchor for control plane
(NSA)?
a) Option 2
b) Option 3 (EN-DC)
c) Option 4
d) Option 7
Correct Answer: b) Option 3 (EN-DC)
Explanation: Option 3 is Non-Standalone (NSA) architecture where LTE provides the control
plane anchor and 5G NR adds data capacity (E-UTRA-NR Dual Connectivity or EN-DC) .
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9. Which 5G deployment option is characterized by a standalone 5G NR core (5GC) without LTE
dependency?
