Digital Forensicsmedium Premium
Digital Forensics: DVR and NVR Surveillance Investigation Scenarios
Published:
Questions
30
Duration
30 min
Faculty-reviewed
0
Updated
20 May 2026
Practice with national-level exam (FACT, FACT Plus, NET, CUET, etc.) mocks, learn from structured notes, and get your doubts solved in one place.
Published:
Questions
30
Duration
30 min
Faculty-reviewed
0
Updated
20 May 2026
Score, per-question explanations and topic breakdown shown right after you submit.
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Applied scenarios in DVR and NVR forensics for the FACT digital forensics paper, pitched at medium difficulty. The mock walks through real laboratory situations: parsing Hikvision HIKBT_FS and Dahua DHFS proprietary layouts to locate indexed video; reconstructing a four-disk RAID 5 array from three surviving disks given stripe size and bay order; carving H.264 NAL units when the partition table is wiped; pulling the SPS and PPS that an isolated IDR slice depends on; correcting DVR clock drift against an NTP reference and against mobile-tower CDR for an alibi window; reading the ring-index head pointer that marks the loop-record overwrite boundary; choosing between ONVIF Profile S, Profile G, and Profile T for forensic export; verifying integrity of a multi-segment .dav export through SHA-256 and timestamp continuity; recovering a truncated MP4 by synthesising a moov atom from the surviving mdat NAL units; and applying Section 63 of the Bharatiya Sakshya Adhiniyam 2023 (formerly Section 65B IEA 1872) certificate, Tomaso Bruno (2015), Anvar P.V. (2014), and Arjun Panditrao (2020) to admissibility challenges.
Written for FACT digital-forensics aspirants, NFSU MSc Cyber Security and Digital Forensics students, and serving investigators upskilling on CCTV scene seizure under the BNSS 2023 search-and-seizure framework. The questions assume a working knowledge of the easy DVR and NVR mock and now extend to scenario-based decisions across DVR file systems, RAID, carving, codecs, statutory regimes, and chain-of-custody mechanics.
Topics covered:
Work through the 30 scenarios under timed conditions, review the explanations against the cited standards and statutes, and run the answer sheet against the topic matrix at the head of the SQL seed. Allow 30 minutes.
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.