Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
231
What is the potential security risk of opening an email attachment from an unknown sender?
Answer:
It might contain malware or a virus.
Attachments from unknown or suspicious senders often contain malicious software (malware, viruses) designed to infect your computer, steal data, or cause damage.
232
What is the standard protocol for sending email from an email client to an email server?
Answer:
SMTP
SMTP (Simple Mail Transfer Protocol) is universally used for transmitting email messages between email servers and from an email client to a sending email server.
233
What does 'CC' stand for in an email application?
Answer:
Carbon Copy
CC stands for Carbon Copy, meaning that the recipients in this field receive a copy of the email, and their addresses are visible to all other recipients.
234
Which of the following is a potential risk associated with clicking on suspicious links in emails?
Answer:
Redirecting you to malicious websites that can install malware or steal credentials.
Suspicious links are often used in phishing or malware distribution campaigns. Clicking them can lead to websites designed to steal personal data, download malicious software, or exploit browser vulnerabilities.
235
When composing an email, what is the primary function of utilizing the 'BCC' field for a recipient?
Answer:
To send a hidden copy of the email to a recipient, whose address remains undisclosed to others.
The 'BCC' field stands for 'Blind Carbon Copy.' Its primary function is to allow you to send a copy of an email to recipients without revealing their email addresses to other recipients in the 'To,' 'Cc,' or even other 'BCC' fields. This is particularly useful for maintaining privacy, sending mass emails without exposing everyone's contact information, or informing someone discreetly about a conversation without their direct involvement being known to others.
236
Which of the following describes a 'phishing' attack?
Answer:
Sending fraudulent emails to trick recipients into revealing sensitive information.
Phishing involves deceptive emails or messages designed to trick individuals into disclosing personal information like passwords or credit card numbers, often by impersonating a trustworthy entity.
237
What is the typical port number used by SMTP for sending email?
Answer:
25
SMTP typically uses port 25 for sending emails. Port 80 is for HTTP, 110 for POP3, and 443 for HTTPS.
238
In which signaling type is bandwidth split for data and signaling separately?
Answer:
Out-of-band
Out-of-band signaling uses a separate, dedicated channel for control and signaling information.
239
When configuring an email client, what is the role of the 'outgoing mail server' setting?
Answer:
It defines the server responsible for sending your emails.
The outgoing mail server setting (typically an SMTP server) tells your email client which server to use for sending emails you compose. The incoming mail server (POP3 or IMAP) is for receiving.
240
The \_\_ is located in the telephone company’s central office and can handle thousands of calls.
Answer:
Local exchange switch
A local exchange switch is the central component of a local telephone exchange that connects subscribers to each other and to other exchanges.