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
4561
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.
4562
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.
4563
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.
4564
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.
4565
What is the correct format for an email address?
Answer:
username@domainname.extension
The standard format for an email address is 'username@domainname.extension', where the username identifies the individual and the domain name identifies the mail server.
4566
Which of the following describes a 'hard bounce' in email delivery?
Answer:
A permanent delivery failure, indicating the email address is invalid or non-existent.
A hard bounce signifies a permanent reason an email cannot be delivered, such as the recipient's email address being invalid, fake, or permanently closed. Unlike a soft bounce, retries are usually futile.
4567
What is a 'digital signature' in the context of email?
Answer:
A cryptographic method to verify the sender's identity and ensure message integrity.
A digital signature uses cryptography to provide authentication of the sender's identity and ensures that the message has not been altered in transit, similar to a handwritten signature but with much stronger assurance.
4568
In email communication, what does 'Netiquette' refer to?
Answer:
The set of social conventions and good manners for online communication.
Netiquette (network etiquette) is the set of informal rules governing acceptable and expected behavior, civility, and good manners when communicating over the internet, including email.
4569
What is the main purpose of an 'autoresponder' in email marketing?
Answer:
To send a series of automated emails to subscribers at predetermined intervals.
An autoresponder in email marketing is a program that automatically sends out a predefined sequence of emails to a subscriber based on specific triggers or schedules, often used for onboarding or nurturing leads.
4570
What is the primary role of a 'Mailing List Server' (or List Server)?
Answer:
To manage subscriptions and distribution for group emails.
A Mailing List Server is a specialized server that manages email distribution lists. It handles subscriptions, posts, archives, and delivers messages to all subscribers of a particular list efficiently.