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
51
Into how many primary categories are communication channels typically classified?
Answer:
3
Communication channels are generally classified into three main types based on their transmission direction: simplex, half-duplex, and full-duplex. These categories define how data flows between the sender and the receiver within a network system.
52
Which transmission medium relies on the propagation of light pulses to transmit data across a network?
Answer:
Fiber optic cable
Fiber optic technology transmits information by sending pulses of light through an optical fiber. This method offers high bandwidth and immunity to electromagnetic interference, making it ideal for long-distance and high-speed data communication.
53
Which network transmission method utilizes a single frequency channel to carry data signals?
Answer:
Baseband
Baseband transmission uses the entire bandwidth of the transmission medium to send a single digital signal. Unlike broadband, which divides the medium into multiple frequency channels, baseband signals occupy the full capacity of the cable at one time.
54
What is the total bit length of an IPv4 address?
Answer:
32 Bits
An IPv4 address is composed of 32 bits, typically represented in dotted-decimal notation as four octets. Each octet consists of 8 bits, resulting in a total of 32 bits for the entire address structure.
55
On which type of device does the Remote Desktop Protocol (RDP) server typically operate?
Answer:
Server computers
The RDP server component is designed to run on host machines, typically server computers or workstations, to listen for incoming connection requests from remote clients, allowing users to access the desktop environment of that machine over a network connection.
56
What is the full form of the acronym MAN in the context of networking?
Answer:
Metropolitan Area Network
MAN stands for Metropolitan Area Network. It is a network that covers a larger geographic area than a Local Area Network (LAN) but is smaller than a Wide Area Network (WAN), typically serving the needs of a city or a large campus.
57
What is the full form of the acronym PDC in the context of network administration?
Answer:
Primary Domain Controller
In older Windows NT-based network environments, the Primary Domain Controller (PDC) was the central server responsible for managing user accounts, security policies, and authentication within a domain. It served as the master database for the domain's security information.
58
What phenomenon occurs when two workstations on a shared Ethernet segment attempt to transmit data simultaneously?
Answer:
Collision
In shared Ethernet networks, a collision occurs when two or more devices attempt to send data frames over the same physical medium at the exact same time. This results in signal interference, requiring the devices to stop, wait for a random interval, and retransmit the data.
59
Which of the following is not considered a type of communication medium?
Answer:
Twisted wire
While twisted pair cabling (UTP/STP) is a standard communication medium, the term 'Twisted wire' is often considered imprecise or incorrect in technical contexts compared to the specific industry-standard classifications like UTP (Unshielded Twisted Pair) or STP (Shielded Twisted Pair).
60
What is the maximum segment length for a thin coaxial cable used in a LAN?
Answer:
185 meter
In the context of 10Base2 Ethernet (Thinnet), which utilizes thin coaxial cable, the maximum segment length is specified as 185 meters. This limitation is due to signal attenuation over the copper medium, which restricts the distance data can travel without amplification.