Lotus Notes uses the following file format.

Lotus Notes uses the following file format.

• A. nsf
• B. pst
• C. ost
• D. mbox

Answer: (A)

Lotus Notes uses its own database format called NSF, which stands for Notes Storage Facility. An NSF file is a Notes database that can store mail, calendar, contacts, tasks, and even applications, with features like replication and access control built into the format. The extension is typically .nsf, reflecting its role as the primary storage container for Notes data. Other common email data formats—PST (used by Microsoft Outlook for personal folders), OST (Outlook’s offline cache), and MBOX (a mailbox format used by many Unix/Linux and other clients)—belong to different ecosystems and are not used by Lotus Notes.

Lotus Notes uses its own database format called NSF, which stands for Notes Storage Facility. An NSF file is a Notes database that can store mail, calendar, contacts, tasks, and even applications, with features like replication and access control built into the format. The extension is typically .nsf, reflecting its role as the primary storage container for Notes data. Other common email data formats—PST (used by Microsoft Outlook for personal folders), OST (Outlook’s offline cache), and MBOX (a mailbox format used by many Unix/Linux and other clients)—belong to different ecosystems and are not used by Lotus Notes.