According to the CHFI v11 Dark Web Forensics objectives, governments that enforce strict internet censorship often block access to publicly listed Tor entry (guard) relays by using IP blacklisting, deep packet inspection (DPI), and traffic fingerprinting. In such environments, connecting directly to the Tor network using standard relay information becomes ineffective.
To overcome this restriction, Tor provides bridge nodes (Tor bridges) . Bridges are unlisted Tor entry relays whose IP addresses are not published in the public Tor directory , making them significantly harder for censors to detect and block. CHFI v11 explicitly identifies Tor bridges as a key mechanism for bypassing government surveillance and censorship. Bridges may also use pluggable transports (such as obfs4, meek, or snowflake) that disguise Tor traffic to appear like normal HTTPS or other benign traffic, further evading detection.
The other options are incorrect. Public Tor relay nodes are typically the first targets of censorship and are already blocked. Direct communication with an exit node is not possible because Tor circuits must always begin with an entry point. Collaborating with government authorities contradicts the goal of bypassing surveillance and is not a technical solution discussed in CHFI v11.
CHFI v11 emphasizes that investigators and analysts must understand Tor infrastructure, including bridges, to properly investigate dark web activity and censorship circumvention techniques. Therefore, the correct and CHFI-aligned method is to use bridge nodes to access the Tor network , making Option A the correct answer.