Explanation

Networks are typically classified into four main types based on distance (geographical coverage):

1. PAN (Personal Area Network) – Very short distance (e.g., Bluetooth, USB connections).
2. LAN (Local Area Network) – Limited area (e.g., home, office, or school network).
3. MAN (Metropolitan Area Network) – City-wide coverage (e.g., ISP networks in a city).
4. WAN (Wide Area Network) – Large-scale, global reach (e.g., the Internet).

Last verified on 08-06-2026

Explanation

• Ctrl + K → Insert Hyperlink

Additional information:

• Ctrl + P → Print
• Ctrl + F2 → Print Preview
• Ctrl + H → Replace dialog box
• Ctrl + D → Font dialog box

Last verified on 06-07-2026

Explanation

• The first row in an HTML table is called the Heading (Header Row).
• It usually contains table headings created with the <th> tag.
• The headings describe the content of each column.
• Data in the remaining rows is generally written using the <td> tag.

Last verified on 06-07-2026

Explanation

• HTTPS (SSL/TLS) is used to establish a secure channel of communication over a potentially insecure network.
• SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are cryptographic protocols.
• They encrypt data to protect it from hackers during transmission.
• They ensure data confidentiality, integrity, and authentication.
• Commonly used in secure websites (HTTPS connections).

Last verified on 08-06-2026

Explanation

• SQR stands for Structured Query Reporter.
• It is a report-writing and programming language used to generate reports from databases.
• SQR is commonly associated with Oracle/PeopleSoft applications.
• It supports SQL queries, calculations, formatting, and report generation.

Additional information:

• SQL – Structured Query Language
• DBMS – Database Management System
• RDBMS – Relational Database Management System
• DDL – Data Definition Language

Last verified on 26-04-2026