Mobile and Network Forensics: iOS, Android Security and Cell Tower CDR Analysis
Published:
Questions
31
Duration
30 min
Faculty-reviewed
0
Updated
25 May 2026
About this mock
This mock test covers the hardware and software security architecture of iOS and Android devices and the forensic analysis of cellular network records (CDRs), directly mapping to UGC-NET Forensic Science Paper II Unit VII. Key concepts include: the iOS Secure Enclave Processor (SEP) and its hardware-fused UID and GID keys; iOS Data Protection classes (NSFileProtectionComplete Class A through NSFileProtectionNone Class D); the Before First Unlock (BFU) and After First Unlock (AFU) device states and their impact on data accessibility; Android Full-Disk Encryption (FDE, Android 5-9) versus File-Based Encryption (FBE, Android 7+); TrustZone Trusted Execution Environment (TEE), Android Verified Boot (AVB), and Titan-M security chip (Pixel devices); JTAG, ISP, and chip-off acquisition limits on encrypted devices; commercial forensic tools (Cellebrite UFED Premium and GrayKey); and Cell Detail Record (CDR) structure including IMEI, IMSI, LAC, Cell ID, timestamp, and duration fields. Indian legal anchors include Section 5(2) of the Indian Telegraph Act 1885 and Section 69 of the IT Act 2000 for lawful intercept, and BSA 2023 Section 63 (formerly IEA 1872 Section 65B) for CDR admissibility.
This mock is designed for MSc Forensic Science (NFSU, Panjab University, Osmania) aspirants, UGC-NET Paper II candidates, and working examiners at CFSL Hyderabad's mobile forensics unit who need to distinguish near-identical technical concepts under time pressure. Questions are calibrated to the hard difficulty level where distractors differ on exactly one parameter, such as FDE versus FBE architecture, BFU versus AFU state, or NSFileProtectionComplete versus NSFileProtectionCompleteUntilFirstUserAuthentication. The landmark PUCL v. Union of India (1997) 1 SCC 301 decision on telephone tapping safeguards is tested alongside practical CDR acquisition and admissibility procedure.
Topics covered:
- iOS SEP UID/GID key properties and hardware fusing
- iOS Data Protection classes A, B, C, D and class key lifecycle
- BFU vs AFU state and forensic data accessibility
- Android FDE vs FBE and Direct Boot (DE vs CE storage)
- TrustZone TEE, AVB, Titan-M and GrapheneOS hardening
- JTAG, ISP, chip-off acquisition limits on encrypted devices
- CDR structure: IMEI, IMSI, LAC, Cell ID, timestamp and tower triangulation accuracy
- Indian lawful intercept statutes and BSA/IEA CDR admissibility
Sharpen your ability to eliminate near-identical distractors across hardware security and cellular network forensics topics. Allow 30 minutes.
Sources & references
Questions in this mock are written and verified against the following sources. Citations are recorded per question and shown in the explanation after submission.
- cited in 9 questions
Tamma, Rohit & Tindall, Donnie -- Practical Mobile Forensics, 4th Edition, Packt Publishing
Chapter 5: iOS Forensic Tools -- Cellebrite UFED Premium and GrayKey Acquisition Methodology
- cited in 7 questions
Apple Inc. -- Apple Platform Security Guide
Keychain Data Protection: Accessibility Attributes and Data Protection Class Mapping
- cited in 4 questions
Android Open Source Project -- Android Security Documentation
Hardware-backed Keystore: TrustZone TEE Architecture and Android Keystore Integration
- cited in 2 questions
GSMA -- IMEI Allocation and Approval Guidelines (PRD TS.06)
Section 2: IMEI Structure -- TAC, SNR, Check Digit and Luhn Algorithm
- cited in 1 question
Bharatiya Nagarik Suraksha Sanhita, 2023; Indian Telegraph Act, 1885
BNSS Section 91 (formerly CrPC Section 91): Summons for production of documents -- TSP CDR and tower dump applications
- cited in 1 question
Information Technology Act, 2000 (India)
Section 69: Power to issue directions for interception or monitoring or decryption of any information through any computer resource
- cited in 1 question
PUCL v. Union of India (1997) 1 SCC 301 (Supreme Court of India)
Judgment: Procedural safeguards for telephone interception under Section 5(2) Telegraph Act 1885
- cited in 1 question
Indian Telegraph Act, 1885 (as amended); PUCL v. Union of India (1997) 1 SCC 301
Section 5(2): Power to take possession of licensed telegraphs and to order interception; PUCL procedural safeguards
- cited in 1 question
GrapheneOS Project -- GrapheneOS Features Documentation
Security Features: Duress PIN / Duress Password -- device wipe on secondary passcode entry
- cited in 1 question
Hoog, Andrew -- Android Forensics: Investigation, Analysis and Mobile Security for Google Android, Wiley
Chapter 6: Android Hardware Forensics -- Chip-Off, JTAG and Hardware-Backed Encryption Limits
- cited in 1 question
Bharatiya Sakshya Adhiniyam, 2023 (India); Indian Evidence Act, 1872
BSA Section 63 (formerly IEA Section 65B): Certificate for admissibility of electronic records including CDRs
- cited in 1 question
Bharatiya Nagarik Suraksha Sanhita, 2023 (India)
Section 91: Power to summon documents and things from TSPs and other persons
- cited in 1 question
ITU-T Recommendation E.212 -- Identification Plan for Public Networks and Subscriptions
Section 3: IMSI Structure -- MCC, MNC and MSIN Field Lengths and India-specific Codes
How our mocks are built
Questions are written and edited by the ForensicSpot team and cited from peer-reviewed forensic textbooks, official syllabi and primary case law. Each one is verified before publishing. Detailed explanations show after you submit, so the test stays a real test. See a mistake? Tell us.
Common questions
What does the Mobile and Network Forensics: iOS, Android Security and Cell Tower CDR Analysis mock cover?+
This mock test covers the hardware and software security architecture of iOS and Android devices and the forensic analysis of cellular network records (CDRs), directly mapping to UGC-NET Forensic Science Paper II Unit VII. Key concepts include: the iOS Secure Enclave Processor (SEP) and its hardware-fused UID and GID keys; iOS Data Protection classes (NSFileProtectionComplete Class A through NSFileProtectionNone Class D); the Before First Unlock (BFU) and After First Unlock (AFU) device states a
How many questions and how long is the test?+
31 multiple-choice questions, 30 minutes total. Difficulty: hard. Tier: Premium.
Who is this mock for?+
Forensic science students and aspirants who want timed, exam-style practice with explanations and verified source citations on Mobile and Network Forensics, NET. Useful for postgraduate entrance preparation and for BSc / MSc forensic students testing their recall under time.
Are the questions reviewed?+
Each question carries a verified source citation. Faculty review for individual questions is in progress.
Do I need an account to take this mock?+
Yes, a free ForensicSpot account is required to start a timed attempt — this lets you save progress, see per-question explanations after submission, and track your topic-level performance over time.