15 Test Modules · Foundation → Expert · Company-Specific

5G RF Interview Mastery
From RAN Optimization to Modem Testing

The complete 5G RF interview prep program. 15 progressively harder test modules covering NR fundamentals, link budgets, beam mgmt, RACH, mobility, KPI analysis, troubleshooting, drive-test logs, and modem conformance — plus dedicated tracks for Qualcomm · Intel · MediaTek · Apple · Samsung · Ericsson · Nokia · Huawei.

Designed for RF Optimization · 5G RAN · Protocol/Modem Test · RF Planning · Field Test · Performance Optimization · UE Testing engineers

See the 15-test roadmap ↓
✓ 15 / 15 Tests Live 3GPP Cited Foundation → Expert Qualcomm · Intel · MediaTek · Apple · Samsung · Ericsson · Nokia · Huawei Last updated 2026-05-20
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The full roadmap

15 tests. Foundation to expert.

Each module focuses on one mastery area. Difficulty scales progressively. Click any test to begin.

Tier 1 · Foundation Crisp fundamentals · pass screening rounds Tests 01-02
TEST 01

5G NR Fundamentals

Architecture · NSA vs SA · FR1/FR2 · numerology · subcarrier spacing · BWP · TDD/FDD · frame structure · physical channels

30 Qs45 minFoundation
Start Test 1
TEST 02

5G RF Basics

RSRP · RSRQ · SINR · RSSI · path loss · link budget · noise floor · MIMO · beamforming · EIRP · CQI/RI/PMI

25 Qs40 minFoundation
Start Test 2
Tier 2 · Intermediate Air interface · access procedures Tests 03-04
TEST 03

5G Physical Channels

SS/PBCH block · SSB beam sweeping · CSI-RS · PRACH · PDCCH/PDSCH · PUCCH/PUSCH · DMRS · PTRS · HARQ

30 Qs45 minIntermediate
Start Test 3
TEST 04

5G Random Access

4-step PRACH · MsgA/MsgB 2-step RACH · preamble groups · PRACH config index · contention resolution · failures

25 Qs35 minIntermediate
Start Test 4
Tier 3 · Advanced Mobility · beam · throughput · KPIs Tests 05-08
TEST 05

5G Mobility

Intra/inter-frequency HO · inter-RAT · LTE↔NR · A1-A5 / B1-B2 events · CHO · BFR · RLF · re-establishment

25 Qs40 minAdvanced
Start Test 5
TEST 06

5G Beam Management

SSB beams · CSI-RS for beam refinement · BFR · QCL Type-A/D · TCI states · panel switching

25 Qs40 minAdvanced
TEST 07

5G Throughput Optimization

MCS · CQI · RI · BLER · PRB · TBS · MIMO rank · scheduling · HARQ · LA · OLLA

30 Qs45 minAdvanced
TEST 08

5G KPI Analysis

RRC SR · PDU SR · IA SR · HO SR · drop · TP · latency · PRB Util · BLER · CQI · MCS · rank distribution

30 Qs50 minAdvanced
Tier 4 · Expert Troubleshooting · drive test · call flow · modem Tests 09-12
TEST 09

5G Troubleshooting Scenarios

Low RSRP · poor SINR · low TP · high BLER · drops · HO failures · RACH failures · BFR · UL/DL interference · PCI collisions

30 Qs50 minExpert
TEST 10

5G Drive Test Analysis

Real DT log RCA · TEMS · Nemo · XCAL · QXDM/QCAT · KPI plots · mobility maps · interference hunts

25 Qs50 minExpert
TEST 11

5G NSA/SA Call Flow

RRC · NGAP · NAS · PDU session est · EN-DC SgNB add · EPS fallback · re-direction · SCG failure

30 Qs50 minExpert
TEST 12

5G Device / Modem Testing

UE capability · attach (NSA/SA) · RRC states · CA · NR-DC · VoNR · EPS-FB · RedCap · power · throughput · conformance

30 Qs50 minExpert
Tier 5 · Company-Specific + Final Match the interviewer's style Tests 13-15
Modem
TEST 13

Qualcomm / Intel / MediaTek Style

Modem deep-dive · NSA/SA registration · RRC/NAS · QXDM/QCAT log analysis · CA · MIMO · RACH/mobility failures

40 Qs60 minExpert
RAN
TEST 14

Ericsson / Nokia / Huawei Style

RAN optimization · vendor counters · KPI breakdowns · parameter tuning · NetAct/PRS/MML

40 Qs60 minExpert
⭐ Boss
TEST 15

Final Mock Interview

Full 1-hour interview simulation · 4 rounds · Fundamentals → Scenarios → Deep RCA → Behavioral · final hire/no-hire report

30 Qs60 minExpert+
Match the interviewer's style

8 company-specific tracks

Each company asks differently. Pick yours and we'll tailor the question style, expected rounds, and grading rubric.

Honest scoring

Where do you actually stand?

Your end-of-test report places you on this 5-tier scale with weak-area diagnosis and a study plan.

0-40%
Beginner
Foundations need work
40-60%
Job-ready
Junior RF role
60-75%
Advanced
Mid / Senior
75-88%
Expert
Senior + Principal
88-100%
Top company
Q'comm · Apple · Intel
One price · everything unlocked

Less than dinner. Worth the offer.

⭐ 1-Year Access
$9.99 / ₹999
All 15 test modules · 8 company tracks · 5,029 question bank · final mock interview
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15 tests · 8 company tracks · 5,029 question bank · 1-year access · ₹999 / $9.99.

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