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
101
In which year was the '@' symbol officially selected for use in email addresses?
Answer:
1972
Ray Tomlinson, a computer programmer, is credited with sending the first network email in 1971. He chose the '@' symbol to separate the user's name from the name of the host computer, and this standard was formally adopted in 1972 as part of the ARPANET email system, becoming a foundational element of electronic communication.
102
What is the common term used to describe unsolicited or junk electronic mail?
Answer:
spam
Spam refers to unsolicited bulk email messages sent to a large number of recipients, often for advertising or malicious purposes. It is a common nuisance in digital communication that filters are designed to block.
103
In what year was the '@' symbol officially adopted for use in email addresses?
Answer:
1972
Ray Tomlinson, the engineer who implemented the first email system on the ARPANET, chose the '@' symbol in 1972. He needed a character to separate the user's name from the name of the host computer. The symbol was chosen because it was rarely used in names and clearly indicated that the user was 'at' a specific host machine.
104
Which of the following options represents a valid email address format?
Answer:
name@website.info
A standard email address follows the format local-part@domain. The domain part must contain a valid domain name ending with a top-level domain, such as .com, .org, or .info. Option B correctly follows this structure, whereas the other options lack the required '@' symbol or contain invalid syntax for an email address.
105
Which of the following are commonly recognized email service providers or platforms?
Answer:
All of these
Gmail, Hotmail (now Outlook.com), and Yahoo Mail are all widely used web-based email services that allow users to send, receive, and manage electronic communications over the internet.
106
What term describes an online meeting conducted between two or more participants?
Answer:
a teleconference
A teleconference refers to a live, virtual meeting where participants in different locations communicate using telecommunications technology. This can include audio, video, or data sharing, allowing for real-time collaboration regardless of the physical distance between the individuals involved.
107
Which of the following is a mandatory requirement for successfully sending an email?
Answer:
Receiver's Email Id
To send an email, the sender must specify the recipient's unique email address. Without a valid destination address, the mail server cannot route the message to the intended recipient's inbox.
108
Which of the following options best describes the primary advantages of electronic mail?
Answer:
long distance, quick, time shifted, can send data
Electronic mail (email) is a digital communication method that allows for the rapid transmission of data over long distances. A key advantage is its asynchronous nature, often referred to as time-shifted communication, which allows users to send and receive messages without requiring both parties to be online simultaneously. It serves as a fundamental tool for modern digital correspondence.
109
In an email message, which field is designated to provide a concise summary or purpose of the communication?
Answer:
Subject
The Subject field in an email is intended to give the recipient a brief overview of the content or purpose of the message before they open it. It helps in organizing and prioritizing incoming emails effectively.
110
Where was the headquarters of Hotmail located at the time of its operation?
Answer:
California
Hotmail was founded and based in Mountain View, California, before it was acquired by Microsoft in 1997. Following the acquisition, the service was integrated into the Microsoft network, eventually transitioning into what is now known as Outlook.com.