Question 1

Which of the following is the correct format for an email address?

Accepted Answer

A valid email address consists of a username, followed by the @ symbol, then the domain name with an extension.

Question 2

What does SMTP stand for in email communication?

Accepted Answer

SMTP (Simple Mail Transfer Protocol) is the protocol used to send emails from a client to a mail server.

Question 3

Which of the following email features allows you to send a message to multiple recipients without disclosing their addresses to each other?

Accepted Answer

BCC (Blind Carbon Copy) hides recipient addresses from other recipients, maintaining privacy.

Question 4

Which protocol is used to retrieve emails from a mail server to a client computer?

Accepted Answer

POP3 (Post Office Protocol 3) and IMAP (Internet Message Access Protocol) are protocols used for receiving and retrieving emails.

Question 5

What is the maximum file size typically allowed as an email attachment in most email services?

Accepted Answer

Most email services like Gmail and Outlook have a default maximum attachment limit of 25 MB per email.

Question 6

Which of the following is NOT a standard email communication feature?

Accepted Answer

Real-time video streaming cannot be embedded directly in email bodies; emails support text, images, and attachments but not live video streaming.

Question 7

Which feature allows you to schedule an email to be sent at a specific future date and time?

Accepted Answer

Email Scheduling feature allows users to compose emails and automatically send them at a predetermined date and time.

Question 8

What is the maximum file size limit for attachments in most standard email services?

Accepted Answer

Most email providers like Gmail, Outlook, and Yahoo limit attachment sizes to approximately 25 MB per email.

Question 9

Which protocol is primarily used for sending emails from a client to an email server?

Accepted Answer

SMTP (Simple Mail Transfer Protocol) is the standard protocol used for outgoing mail transmission from client to server.

Question 10

In email communication, what does the 'CC' field stand for?

Accepted Answer

CC stands for Carbon Copy, allowing you to send a copy of the email to additional recipients while keeping them visible to all.

Question 11

Which protocol is used for retrieving emails from a server while keeping them on the server?

Accepted Answer

IMAP (Internet Message Access Protocol) retrieves emails from the server and synchronizes them without deleting originals.

Question 12

What is a 'Spam' email commonly characterized by?

Accepted Answer

Spam refers to unsolicited bulk emails, often containing advertisements or malicious content sent to large numbers of users.

Question 13

In email security, what does 'encryption' primarily protect?

Accepted Answer

Encryption protects email content from being read by unauthorized persons during transmission and storage.

Question 14

When sending an email with sensitive military documents, which protocol ensures encrypted end-to-end communication between sender and recipient?

Accepted Answer

SMTP with TLS/SSL encryption provides secure encrypted transmission of emails, while HTTP, FTP, and Telnet do not offer proper email security protocols.

Question 15

What is the maximum file size limit typically allowed for a single email attachment in standard military-grade email systems?

Accepted Answer

Most institutional and military email servers enforce attachment limits between 5-25 MB to prevent server overload and ensure efficient communication.

CDS Email & Communication

Email & Communication — Practice Questions