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
211
A(n) \_\_ signal is a composite analog signal with infinite bandwidth.
Answer:
Digital
A perfect digital signal, represented as a square wave, is theoretically composed of an infinite number of sine waves, giving it infinite bandwidth.
212
In TCP/IP, a port address is how many bits long?
Answer:
16
TCP/IP uses 16-bit port numbers to identify specific applications or processes running on a host.
213
Which channel type transmits data at a relatively slow pace?
Answer:
Narrow band channel
Narrow band channels support low-speed data communications.
214
For which type of channel is Shannon capacity used to find maximum bit rate?
Answer:
Noisy
The Shannon-Hartley theorem calculates the theoretical maximum data rate (channel capacity) for a communication channel with a specific noise level.
215
When multiple devices use the same transmission medium and channel, it is called:
Answer:
Multiplexing
Multiplexing enables several signals to share a single channel efficiently.
216
In a time-domain plot, the horizontal axis represents what?
Answer:
Time
A time-domain plot shows how a signal's amplitude changes over time, with time on the horizontal axis.
217
In a frequency-domain plot, the horizontal axis represents what?
Answer:
Frequency
A frequency-domain plot shows the amplitude or phase of a signal's constituent frequencies, with frequency on the horizontal axis.
218
Which of the following contains a permanent IP address?
Answer:
Server
A web server, which hosts websites and services, must be consistently reachable on the internet. For this reason, servers are typically assigned a permanent, static IP address that does not change. Client computers, in contrast, are usually assigned a temporary, dynamic IP address.
219
The address assigned to a networked computer is called what?
Answer:
IP Address
An IP (Internet Protocol) address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
220
The \_\_ product defines the number of bits that can fill a link.
Answer:
Bandwidth-delay
The bandwidth-delay product measures the capacity of a network link, representing the maximum number of bits in transit at any time.