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The class definition and the constructor are pretty much the same as always.
for more details please visit
oopweb.com/CPP/Documents/ThinkCScpp/Volume/chap20.htm - 31k

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Posted by waqasahmad

1.)FIFO
2.)LIFO
3.)PQ
4.)CQ

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Posted by fawad

FIFO, LIFO, CQ

PQ offers priority Queue.

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Posted by waqqas1

FIFO,WFQ & for priority we have PQ(priority queuing).

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Posted by Hash007

There are some queing mechanism are
LIFO(Last in first out) FIFO(First in first out) PQ (Priority Queuing)

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Posted by HamidAliKhan

The following is a list of the Queuing mechanisms:

i. First in First Out (FIFO).
ii. Priority Queuing (PQ).
iii. Custom Queuing (CQ).
iv. Weighted Fair Queuing (WFQ).

Priority Queue:

priority queuing (PQ) enables network administrators to prioritize
traffic based on specific criteria.And these criteria include protocol or sub-protocol types, source interface, packet size, fragments, or any parameter identifiable through a standard or extended access list.

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Posted by sagitraz