Explanation

• In MS Word, Header and Footer options are found in the Insert tab.
• Headers appear at the top of the page, while footers appear at the bottom.
• They are used for page numbers, dates, titles, and document information.
• This feature helps in professional document formatting.

Last verified on 29-05-2026

Explanation

• Ctrl + S = To save a document.

Additional information:

• Ctrl + X → Cut (remove selected text)
• Ctrl + R → Align text to the right
• Ctrl + E → Center align text
• Ctrl + J → Justify paragraph
• Ctrl + L → Align text to the left
• Ctrl + Q → Remove paragraph formatting (reset to default left alignment)

Last verified on 10-06-2026

Explanation

• Ctrl + X → Cut (remove selected text)

Additional information:

• Ctrl + R → Align text to the right
• Ctrl + E → Center align text
• Ctrl + J → Justify paragraph
• Ctrl + L → Align text to the left
• Ctrl + Q → Remove paragraph formatting (reset to default left alignment)

Last verified on 10-06-2026

Explanation

• A firewall’s main function is to prevent or block unauthorized access to a computer network.
• It acts as a security barrier between trusted and untrusted networks (like the internet).
• It filters incoming and outgoing network traffic based on security rules.
• It helps protect systems from hackers and unwanted access attempts.

Last verified on 10-06-2026

Explanation

• DOCX is the newer version of DOC, the original official Microsoft Word file format. 
• Microsoft Word 97 - 2003 Document extension (.doc).
• Microsoft Word 2007 to till date Document extension (.docx).

Additional information:

• .xls extension of Excel.
• .ppt extension of PowerPoint.
• .txt extension of Text files.
• .pdf extension of Portable Document Format.

Last verified on 15-02-2026