Assume a cache has 16 entries. How many index bits are needed to address the cache?   a. 2   b. 4   c. 5   d. 16

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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QUESTION 22

  1. Assume a cache has 16 entries. How many index bits are needed to address the cache?

      a.

    2

      b.

    4

      c.

    5

      d.

    16

    QUESTION 23

    1. Which of the following statements about cache write policy is NOT true?

        a.

      A dirty bit is used to implement a write back approach.

        b.

      A cache entry with dirty bit = 1 means the data inside is safe to be replaced.

        c.

      A write back approach is not suitable for multiple processors accessing the same memory.

        d.

      A write back approach is typically faster than a write through approach.

       

      QUESTION 25

      1. Which of the following statements is true of normalized scientific notation?

          a.

        3.06 x 10^3 is in decimal normalized scientific notation

          b.

        0.30 x 10^3 is in decimal normalized scientific notation

          c.

        0.11 x 10^5 is in binary normalized scientific notation

          d.

        10.01 x 10^5 is in binary normalized scientific notation

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