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
31
What is the physical or logical path through which data travels from one location to another?
Answer:
Medium
The transmission medium is the physical path or material that connects the sender and the receiver, allowing data signals to propagate from one point to another within a network system.
32
How is the internet classified in terms of network scope?
Answer:
WAN
The internet is the largest example of a Wide Area Network (WAN). It is a global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide, spanning across countries and continents to provide universal connectivity.
33
Which of the following options is categorized differently from the others regarding network transmission media?
Answer:
Microwaves
Coaxial cable, optical fiber, and twisted pair wire are all examples of guided or wired transmission media. In contrast, microwaves represent unguided or wireless transmission media, making it the odd one out in this group.
34
Which transmission technique utilizes modulation to facilitate data transfer over long distances?
Answer:
Broadband
Broadband technology is specifically designed for long-distance communication by modulating data onto carrier waves. This technique enables the transmission of various types of signals, including voice, data, and video, across extensive network infrastructures.
35
Which communication technique allows multiple signals or calls to be transmitted simultaneously over a single physical communication medium?
Answer:
Multiplexing
Multiplexing is a method used in telecommunications and computer networks to combine multiple analog or digital signals into one signal over a shared medium. This increases the efficiency of the transmission line by allowing several data streams to travel concurrently without interfering with one another.
36
Which mode of data transmission is utilized for communication between a standard computer and a keyboard?
Answer:
simplex
Simplex transmission occurs when data flows in only one direction. Since a keyboard only sends input to the computer and does not receive data back from it, this is a classic example of simplex communication.
37
Which company was responsible for developing the most widely used networking software during the 1980s?
Answer:
Novell
In the 1980s, Novell NetWare became the dominant network operating system for local area networks (LANs). It provided essential file and print services that were widely adopted by businesses, establishing Novell as a leader in networking software during that decade.
38
Which statement accurately describes the architecture of a peer-to-peer (P2P) network?
Answer:
every computer is capable of playing the role of client, server, or both at the same time
In a peer-to-peer network, there is no centralized server. Instead, each connected device, or 'peer', has equal status and can function as both a client and a server. This allows individual nodes to share resources, such as files or processing power, directly with other nodes on the network without requiring a dedicated central authority.
39
In which transmission mode is data sent one character at a time?
Answer:
Asynchronous mode
Asynchronous transmission sends data one byte or character at a time, using start and stop bits to synchronize the timing between the sender and the receiver for each individual unit.
40
What does the acronym UTP represent in the context of network cabling?
Answer:
Unshielded Twisted Pair
UTP, or Unshielded Twisted Pair, is the most common type of cable used in local area networks (LANs). It is preferred for its flexibility and cost-effectiveness, as it does not require the additional shielding found in STP (Shielded Twisted Pair) cables to protect against interference.