Which of the following is a correct sequence of different layers of Open System Interconnection (OSI) model?

Which of the following Linux file systems is a journaled file system?

You are responsible for all computer security at your company. This includes initial investigation into alleged unauthorized activity. Which of the following are possible results of improperly gathering forensic evidence in an alleged computer crime by an employee?
Each correct answer represents a complete solution. Choose three.

Adam works as a professional Computer Hacking Forensic Investigator. A project has been assigned to him to investigate a multimedia enabled mobile phone, which is suspected to be used in a cyber crime. Adam uses a tool, with the help of which he can recover deleted text messages, photos, and call logs of the mobile phone.
Which of the following tools is Adam using?

Peter works as a Security Administrator for SecureEnet Inc. He observes that the database server of the company has been compromised and the data is stolen. Peter immediately wants to report this crime to the law enforcement authorities. Which of the following organizations looks after the computer crimes investigations in the United States?