1.

The number of logical CPUs in a computer having two physical quad-core chips with hyper threading enabled is _____.1. 12. 23. 84. 16

Answer» Correct Answer - Option 4 : 16

The correct answer is "option 4".

Hyperthreading is an innovation in which a single core can work as having multiple virtual cores.

In other words, Hyperthreading increases parallelism by allowing multiple processes execution within a single core using multiple virtual cores.

A processor with 2 cores is a dual-core processor and with 4 cores are quad-core processors.

EXPLANATION:

Physical CPU can be considered as the processor, Logical CPU is the core inside processors & Hyperthreading involves virtual cores inside cores.

Core

CPU

One core – 1 processor

One physical CPU – 8 processors

Single Quad-core – 4 processors

One physical CPU – 2 logical CPUs

Two Quad-core – 8 processors

    Two physical CPU -> 2 × 8 -> 16 logical CPU

Hence, the correct answer is "option 4".

Never confuse between Multithreading and Hyperthreading.

  • Multithreading means multiple threads involves inside the operating system to increase process execution.
  • Hyperthreading involves multiple virtual cores inside the processor to increase processing speed.


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