Programming language

• Fiber Optic Communication - Attenuation:
• Attenuation: The reduction or loss in optical signal power as light pulses propagate through the optical fiber core over distance, typically measured in decibels per kilometer (dB/km).
• Caused primarily by absorption (material and impurity absorption) and scattering (Rayleigh scattering).
• Other Terms:
• Propagation: The physical transmission and wave motion of light through the fiber.
• Scattering: A physical mechanism contributing to attenuation.
• Conclusion: The loss in signal power is called Attenuation (Option 1).

Correct option: (1) Attenuation

• Characteristics of Thin Clients:
• thin client is a lightweight client terminal that relies entirely on a central server to perform computational processing, data storage, and application hosting.
• Thin clients communicate with web/application servers and display server-rendered interfaces.
• Statement: They don't support server-side features such as JavaScript. $\implies$ Incorrect / Not a feature.
• Servers execute server-side technologies (Node.js JavaScript, PHP, Java) completely independently of whether the connecting client is thin or thick.
• Conclusion: Option 3 is not a feature of thin clients.

Correct option: (3) They don't support server-side features such as JavaScript

• Classful IPv4 Address Architecture:
• IPv4 address classes are determined by the leading bits of the first octet:
• Class A: Range 1.0.0.0 to 126.255.255.255 (leading bit 0)
• Class B: Range 128.0.0.0 to 191.255.255.255 (leading bits 10)
• Class C: Range 192.0.0.0 to 223.255.255.255 (leading bits 110)
• In 124.12.12.248, the first octet is 124, which lies squarely within the 1 - 126 range.
• Conclusion: 124.12.12.248 belongs to class A (Option 1).

Correct option: (1) 124.12.12.248