which technology id used in compact disks...? Mcqs

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which technology id used in compact disks...?

(A) laser
(B) mechanical

(C) elecrtical
(D) none of these

✅ Correct Answer: laser

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Source: This question is taken from the District Zakat Officer BS-17 PPSC past papers

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In the topology computer is directly linked to a centre computer:...?

(A) Bus
(B) Node

(C) Star
(D) Ring

✅ Correct Answer: Star

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exexplanation-image
Explanation:

A star topology is a network setup where every device connects individually to a central hub, switch, or router. All data must pass through this central point before reaching its destination. It is highly reliable and scalable, as individual device failures do not disrupt the rest of the network.

Source: This question is taken from the Data Entry Operator BS-14 Lahore High Court 2022

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