Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
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
31
What does 'MIME' stand for in the context of email?
Answer:
Multimedia Internet Mail Extension
MIME (Multipurpose Internet Mail Extension) allows email to support text in character sets other than ASCII, as well as attachments of non-text content such as audio, video, images, and application programs.
32
What is the function of a 'mailing list'?
Answer:
To send a single email to multiple subscribers simultaneously.
A mailing list allows a sender to send one email to a single address, and that email is then automatically distributed to all subscribers of the list. This facilitates group communication.
33
Which of these communication methods is considered 'asynchronous'?
Answer:
Email
Asynchronous communication does not require immediate responses and allows parties to communicate at their convenience. Email is a classic example, unlike real-time methods like video conferencing or phone calls.
34
Which feature allows users to organize their emails into different folders within an email client?
Answer:
Labels/Folders
Email clients provide features like folders or labels to allow users to categorize and organize their incoming and outgoing emails, improving manageability and searchability.
35
Another term for the cable TV office is:
Answer:
Head end
The headend is the central point in a cable television system where signals are received, processed, and distributed to subscribers.
36
In a banyan switch with 8 inputs and 8 outputs, how many stages are there?
Answer:
3
The number of stages in a banyan switch is calculated as log₂(N), where N is the number of inputs. log₂(8) = 3.
37
Another name for the cable TV central office is what?
Answer:
Head end
The head end is the master facility where cable television signals are received and processed for distribution.
38
What is the purpose of email 'whitelisting'?
Answer:
To ensure emails from specific, trusted senders are always delivered to the inbox.
Whitelisting an email address or domain ensures that emails from those specified sources are never treated as spam and are always delivered to your inbox. It's an explicit trust mechanism.
39
What is the primary benefit of using a dedicated email client (like Outlook or Thunderbird) over webmail (like Gmail or Outlook.com) for managing emails?
Answer:
Dedicated clients can offer offline access to emails and more advanced customization.
Dedicated email clients often provide offline access to downloaded emails, more robust integration with other desktop applications, and a higher degree of customization for rules, filters, and viewing preferences compared to browser-based webmail.
40
When composing an email, which specific field should you use to add recipients who will receive a copy of the message without their email address being visible to other recipients?
Answer:
Bcc
The 'Bcc' field stands for 'Blind Carbon Copy.' When you place an email address in the Bcc field, the recipient receives a copy of the email, but their address is hidden from all other recipients (those in the 'To' and 'Cc' fields, as well as other 'Bcc' recipients). This is useful for privacy, sending mass emails without exposing everyone's address, or discreetly informing someone without other recipients knowing.
'To' is for the primary recipients.
'Cc' (Carbon Copy) is for recipients who receive a copy, and their address is visible to all other recipients.
'Subject' is for the title or topic of the email, not for recipients.