Which of the following counters used to identify memory bottlenecks, shows the quantity of RAM available after working sets and cache?

A.
Paging File/% Usage.

B.
Available Bytes.

C.
Pages/sec

D.
Paging File/% Usage Peak

Explanation:
The Available Bytes counter shows the quantity of RAM available after working sets and cache.
Incorrect
Answers:
A: The Paging File/% Usage counter shows the percentage of the maximum page file used. This counter should not have a consistently high value.
C: The Pages/sec counter shows how many pages are not immediately available in RAM.
Pages in this case pertain to hard disk reads or writes to the hard disk.
D: The Paging File/% Usage Peak counter provides an idea of the value of peak paging file usage.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 533-534.