Looking for comprehensive PGDCA (Post Graduate Diploma in Computer Applications) notes on Internet Services for the 2026–27 academic session? Access complete theory explanations, short notes, long analytical answers, objective MCQs, and exam-oriented solutions covering Electronic Mail (SMTP, POP3, IMAP), File Transfer Protocol (FTP), Remote Login (Telnet/SSH), World Wide Web (WWW), E-Commerce, Search Engine mechanics, VoIP, and Online Security protocols tailored for university diploma exams.
Internet Services
To interact across the Internet, users rely on distinct services built on top of the physical network.
Definition for Exam:
An Internet Service is any application, capability, or utility provided over the Internet that enables users to transfer data, access information, or communicate globally.
Major Internet Services:
- World Wide Web (WWW): System of interlinked web pages accessed via a browser.
- File Transfer Protocol (FTP): Used to upload and download files between client and server.
- Telnet / SSH: Allows users to log into and control remote computers over a network.
- Domain Name System (DNS): Converts human-friendly domain names (e.g., [www.google.com](https://www.google.com)) into numerical IP addresses.
PGDCA Internet Services Notes
2-Mark Questions
Q1. What is FTP? State its primary use.
Answer: FTP (File Transfer Protocol) is an Internet service protocol used to transfer files between a client computer and a server over a network. Its primary use is uploading website files to web hosting servers.
Q2. Define Domain Name System (DNS).
Answer: DNS (Domain Name System) is an Internet service that acts as a global directory, translating human-readable domain names (e.g., [www.google.com](https://www.google.com)) into computer-readable IP addresses (e.g., 142.250.190.46).
PGDCA Email FTP Telnet Important Questions 2026-27
PGDCA Internet Applications and Services Solutions
3-Mark Questions
Q3. Explain Remote Access Services: Telnet vs. SSH.
Answer:
- Telnet: A network protocol used for remote command-line login. It transmits all data, including usernames and passwords, in unencrypted plain text (insecure).
- SSH (Secure Shell): A secure remote access protocol that encrypts all data traffic to prevent eavesdropping and unauthorized access.
- Usage: SSH has largely replaced Telnet in modern system administration due to its strong encryption capabilities.
nternet Services PGDCA Syllabus Question Answer
🌐 PGDCA Exam Preparation Notice: This page provides curated PGDCA (Post Graduate Diploma in Computer Applications) Internet Services Study Material & Solutions updated for the 2026–27 academic session. This complete guide features key service definitions, protocol working mechanisms, email delivery steps, client-server models, and high-yield exam questions designed to help you secure top marks in your semester examinations.
💡 Master PGDCA Internet Applications:
- Need clarification on SMTP vs POP3/IMAP, FTP commands, or remote login security in the Internet Services module? Drop your query in the comments section below!
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