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
161
Which is a first-generation cellular phone system?
Answer:
AMPS
Advanced Mobile Phone System (AMPS) was the analog mobile phone system standard developed in the 1980s, representing 1G technology.
162
What is the main advantage of end-to-end encryption for email communication?
Answer:
It ensures that only the sender and intended recipient can read the message.
End-to-end encryption guarantees that the message is encrypted from the moment it leaves the sender's device until it reaches the recipient's device, making it unreadable to any intermediaries, including email providers.
163
What is the common term for the practice of sending emails with the intention of spreading false information or rumors?
Answer:
Hoax
A hoax, in the context of email, refers to a deceptive message that aims to mislead or trick recipients, often by spreading false alarms, chain letters, or urban legends. Spam is unsolicited commercial mail, phishing seeks data, and spoofing fakes identities.
164
The carrier for intra-LATA services is:
Answer:
LEC
A Local Exchange Carrier (LEC) is a telephone company that provides services within a LATA.
165
Which switch type combines space-division and time-division technologies for optimal performance?
Answer:
TST
A Time-Space-Time (TST) switch combines time-division and space-division switching to create a highly efficient, non-blocking switching fabric.
166
Which term describes emails that deliver advertisements to a user's inbox without their explicit consent?
Answer:
Spam
Spam is specifically defined as unsolicited and often commercial email, sent in bulk. Newsletters and opt-in mails are usually consensual, and transactional emails are responses to user actions.
167
In which signaling type is the same circuit used for data and signaling?
Answer:
In-band
In-band signaling sends control information on the same communication channel that the user's data is using.
168
What is 'spam' in the context of email?
Answer:
Unsolicited and unwanted bulk emails
Spam refers to unsolicited and often commercial emails sent in bulk to a large number of recipients, typically without their consent.
169
What is generally considered a 'best practice' for password security for email accounts?
Answer:
Creating a long, complex, and unique password.
A strong password that is long, complex (mixture of characters, numbers, symbols), and unique to your email account significantly reduces the risk of unauthorized access.
170
Which fundamental component enables the transmission and reception of electronic mail between users?
Answer:
Network Infrastructure
The core mechanism that permits the exchange of messages within an email system is the 'Network Infrastructure'. While other components like an operating system (for running the email client) and application software (the email client itself) are necessary, they cannot communicate or transmit emails remotely without a network. Local storage is used for saving emails on a device but doesn't facilitate exchange. The network, most commonly the Internet, provides the essential communication pathways and protocols (like SMTP, POP3, IMAP) that allow email messages to travel from one mail server to another, thereby connecting senders and recipients globally.