Competitive Exams : Computer Awareness - Internet and Email (Set 1)

Question 1

What is the primary operational difference between the POP3 and IMAP protocols used for receiving emails?

Accepted Answer

A) POP3 downloads emails to the local device and typically removes them from the server, while IMAP synchronizes emails across multiple devices while keeping them on the server.

Answer

B) POP3 encrypts messages during transit, whereas IMAP sends all email messages in plain unencrypted text.

Answer

C) IMAP is used exclusively for outgoing emails, whereas POP3 is used exclusively for incoming emails.

Answer

D) POP3 operates over web browser ports, whereas IMAP functions as a network routing protocol.

Question 2

Which protocol is primarily responsible for transmitting outgoing email messages from an email client to a mail server?

Accepted Answer

C) SMTP

Answer

A) POP3

Answer

B) IMAP

Answer

D) HTTP

Question 3

When composing an email, what is the effect of placing an email address in the 'Bcc' (Blind Carbon Copy) field?

Accepted Answer

B) The recipient's email address remains hidden from all other recipients of the email.

Answer

A) The recipient receives the email with high priority status.

Answer

C) The recipient receives an automatically encrypted copy of the email attachments.

Answer

D) The message is delivered directly to the recipient's spam folder.

Question 4

What is the standard default port number used by HTTPS (Hypertext Transfer Protocol Secure) for encrypted web communications?

Accepted Answer

C) 443

Answer

A) 80

Answer

B) 21

Answer

D) 8080

Question 5

What is the core function of the Domain Name System (DNS) on the Internet?

Accepted Answer

B) Translating human-readable domain names into IP addresses

Answer

A) Encrypting user passwords stored on remote servers

Answer

C) Allocating dynamic IP addresses to local devices via DHCP

Answer

D) Filtering malicious spam emails before reaching inbox

Question 6

What are the address lengths of IPv4 and IPv6 protocols respectively?

Accepted Answer

C) IPv4 uses 32 bits, while IPv6 uses 128 bits.

Answer

A) IPv4 uses 16 bits, while IPv6 uses 64 bits.

Answer

B) IPv4 uses 32 bits, while IPv6 uses 64 bits.

Answer

D) IPv4 uses 64 bits, while IPv6 uses 128 bits.

Question 7

Which email extension standard allows Internet mail to support non-ASCII text, attachments (images, audio, files), and multi-part message bodies?

Accepted Answer

A) MIME (Multipurpose Internet Mail Extensions)

Answer

B) POP3 (Post Office Protocol version 3)

Answer

C) IMAP (Internet Message Access Protocol)

Answer

D) SMTP (Simple Mail Transfer Protocol)

Question 8

Consider the following Uniform Resource Locator (URL): https://www.example.org:8080/portal/login.php

What component of the URL is represented by :8080?

Accepted Answer

C) Port number

Answer

A) Top-Level Domain (TLD)

Answer

B) Subdomain identifier

Answer

D) Directory path parameter

Question 9

Which type of cyber threat involves sending deceptive emails that appear to originate from legitimate institutions to fraudulently harvest sensitive user credentials?

Accepted Answer

B) Phishing

Answer

A) Port Scanning

Answer

C) SQL Injection

Answer

D) Man-in-the-Middle (MitM)

Question 10

What type of HTTP cookie is stored only in volatile memory and deleted automatically when the user closes their web browser?

Accepted Answer

B) Session Cookie

Answer

A) Persistent Cookie

Answer

C) Supercookie

Answer

D) Zombie Cookie

Question 11

Which network protocol provides secure, encrypted command-line access to remote network devices over TCP port 22?

Accepted Answer

C) SSH (Secure Shell)

Answer

A) Telnet

Answer

B) FTP

Answer

D) SNMP

Question 12

In traditional IPv4 classful addressing, what is the valid first octet numeric range for Class C IP addresses?

Accepted Answer

C) 192 to 223

Answer

A) 1 to 126

Answer

B) 128 to 191

Answer

D) 224 to 239

Question 13

Which standard Internet protocol uses TCP port 21 for control/command signals and port 20 for data transfers?

Accepted Answer

B) FTP (File Transfer Protocol)

Answer

A) SMTP

Answer

C) TFTP

Answer

D) HTTP

Question 14

What is the standard length of a physical MAC (Media Access Control) address?

Accepted Answer

B) 48 bits

Answer

A) 32 bits

Answer

C) 64 bits

Answer

D) 128 bits

Question 15

Which networking device operates at Layer 3 (Network Layer) of the OSI model to forward packets between separate IP networks?

Accepted Answer

C) Router

Answer

A) Ethernet Hub

Answer

B) Layer 2 Switch

Answer

D) Physical Repeater

Question 16

In the standard 4-layer TCP/IP reference model, which layer maps directly to the top three layers (Session, Presentation, Application) of the OSI model?

Accepted Answer

D) Application Layer

Answer

A) Network Access Layer

Answer

B) Internet Layer

Answer

C) Transport Layer

Question 17

Inside an email header, which parameter logs the exact trace and order of Mail Transfer Agents (MTAs) passed by the message?

Accepted Answer

B) Received:

Answer

A) Subject:

Answer

C) Reply-To:

Answer

D) Content-Type:

Question 18

Which signaling protocol is widely used to establish, manage, and terminate real-time Voice over IP (VoIP) and video communication sessions?

Accepted Answer

A) SIP (Session Initiation Protocol)

Answer

B) SNMP (Simple Network Management Protocol)

Answer

C) POP3 (Post Office Protocol 3)

Answer

D) NTP (Network Time Protocol)

Question 19

What is the primary role of a Proxy Server in a local area network setup?

Accepted Answer

B) Intercepting request traffic to provide web caching, traffic filtering, and anonymity

Answer

A) Converting analog signals to digital impulses over coax lines

Answer

C) Formatting disk drives for local network storage arrays

Answer

D) Assigning MAC addresses to new local network adapters

Question 20

Which TCP port is used by IMAPS (IMAP over SSL/TLS) for securely retrieving emails over an encrypted connection?

Accepted Answer

C) 993

Answer

A) 110

Answer

B) 143

Answer

D) 995