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Internet, URL, DNS & Browser

Reasoning & Computer Aptitude · Office, Database & Networking

Useful for: SSC CGL, IBPS Banking, OSSC RHT — Regular High School Teacher, OSEPA Primary Teacher / JT Category-I, OSEPA Upper Primary — Arts, OSEPA Upper Primary — Science, OSSSC Govt Physical Education Teacher (PET), OSSSC Govt TGT Arts

and 2 more exams

OSSSC Govt TGT Science — CBZ, OSSSC Govt TGT Science — PCM

हिंदी में पढ़ें

Overview

This topic covers how the internet works, e-mail features and digital payment systems.

Key points

HTTPS encrypts web traffic; HTTP does not.
DNS converts domain names to IP addresses.
E-mail: CC recipients are visible to all; BCC recipients are hidden.
RTGS is for high-value transfers (minimum ₹2 lakh); NEFT works in batches; IMPS is instant 24×7.
UPI is operated by NPCI.

Explanation

URL parts: protocol (https), domain (example.com), path (/page).
Cookies store small pieces of browsing data.
Never share OTP, PIN or passwords; banks do not ask for them.
SMTP sends mail; POP3 and IMAP retrieve it.

Step by step

Recall the exact term or function asked.
Eliminate options from a different category (hardware vs software, input vs output).
Check the shortcut or acronym expansion.

Examples

UPI is operated by → NPCI.
Hidden recipients in an e-mail are added in → BCC.
Minimum amount for RTGS → ₹2 lakh.

Traps and advanced points

Trap: Confusing CC and BCC.
Trap: Thinking HTTP is secure.
Trap: Mixing RTGS and NEFT features.

Quick revision

HTTPS = secure.
BCC hidden.
RTGS ≥ ₹2 lakh; IMPS instant.

Practice MCQs

Quick check: Before entering banking credentials on a site, which check is most useful?
1. Trust any link in a message
2. Share the OTP with support callers
3. Verify the genuine domain and secure connection, not just the page appearance
4. Disable browser security
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Answer: (c) Verify the genuine domain and secure connection, not just the page appearance. Correct: Verify the genuine domain and secure connection, not just the page appearance.
Quick check: What is a VPN primarily used for in networking?
1. Increase physical RAM
2. Replace all firewalls
3. Create an encrypted tunnel over an untrusted network
4. Print remotely only
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Answer: (c) Create an encrypted tunnel over an untrusted network. Correct: Create an encrypted tunnel over an untrusted network.
Concept check: Phishing is best described as what?
1. A fraudulent attempt to obtain sensitive information by impersonation
2. A spreadsheet feature
3. A compression algorithm
4. A disk-formatting process
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Answer: (a) A fraudulent attempt to obtain sensitive information by impersonation. Correct: A fraudulent attempt to obtain sensitive information by impersonation.
Concept check: What is the main purpose of a firewall?
1. Convert every file to PDF
2. Cool the processor
3. Filter network traffic according to security rules
4. Increase screen resolution
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Answer: (c) Filter network traffic according to security rules. Correct: Filter network traffic according to security rules.
Concept check: Two-factor authentication adds security by requiring what?
1. The same password typed twice
2. Two different forms/categories of verification
3. Two browsers
4. Two antivirus programs
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Answer: (b) Two different forms/categories of verification. Correct: Two different forms/categories of verification.
In a Jaipur office practice scenario, Which protocol is primarily associated with sending e-mail between mail systems?
1. IMAP
2. ARP
3. SMTP
4. HTTP
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Answer: (c) SMTP. Correct: SMTP.
In a Jaipur office practice scenario, Two-factor authentication adds security by requiring what?
1. Two browsers
2. Two antivirus programs
3. Two different forms/categories of verification
4. The same password typed twice
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Answer: (c) Two different forms/categories of verification. Correct: Two different forms/categories of verification.
In a Bhopal office practice scenario, Concept check: A strong password practice is which of the following?
1. Share passwords by email
2. Reuse one short password everywhere
3. Use only your first name
4. Use a long unique password or passphrase for each important account
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Answer: (d) Use a long unique password or passphrase for each important account. Correct: Use a long unique password or passphrase for each important account.
In a Bhopal office practice scenario, Concept check: Before entering banking credentials on a site, which check is most useful?
1. Verify the genuine domain and secure connection, not just the page appearance
2. Trust any link in a message
3. Share the OTP with support callers
4. Disable browser security
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Answer: (a) Verify the genuine domain and secure connection, not just the page appearance. Correct: Verify the genuine domain and secure connection, not just the page appearance.
In a Bhopal office practice scenario, Concept check: What does “download” mean?
1. Receive data from a remote system to a local device
2. Restart the router
3. Encrypt a keyboard
4. Create a user account only
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Answer: (a) Receive data from a remote system to a local device. Correct: Receive data from a remote system to a local device.
In a Jaipur office practice scenario, What does URL stand for?
1. Universal Routing Link
2. User Resource List
3. Unified Remote Locator
4. Uniform Resource Locator
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Answer: (d) Uniform Resource Locator. Correct: Uniform Resource Locator.
In a Jaipur office practice scenario, Which protocol is normally used for secure web browsing?
1. Telnet
2. HTTPS
3. POP3
4. FTP
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Answer: (b) HTTPS. Correct: HTTPS.
In a Jaipur office practice scenario, Which protocol is commonly used by an e-mail client to synchronise mail while keeping it on the server?
1. DHCP
2. ARP
3. SMTP
4. IMAP
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Answer: (d) IMAP. Correct: IMAP.
In a Jaipur office practice scenario, What does “upload” mean?
1. Move the mouse pointer
2. Delete a file permanently
3. Print a document
4. Send data from a local device to a remote system
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Answer: (d) Send data from a local device to a remote system. Correct: Send data from a local device to a remote system.
In a Jaipur office practice scenario, What does “download” mean?
1. Encrypt a keyboard
2. Create a user account only
3. Receive data from a remote system to a local device
4. Restart the router
Read chapter notes · Similar questions
Show answer
Answer: (c) Receive data from a remote system to a local device. Correct: Receive data from a remote system to a local device.