Consider a memory management system using the First Fit algorithm for memory allocation

Consider a memory management system using the First Fit algorithm for memory allocation. That is, whenever a process needs to be allocated memory, the system will look for the first (lowest-addressed) free chunk of memory that is at least as large as the amount of memory needed by the process. When a free chunk is found, assume that the system allocates memory near the tail (higher-address end) of the free chunk for the process.

Let there be 192MB of space set aside, starting from address 64MB, to manage all the user processes in the system.

Let the following table depict the memory layout for a set of five processes in the system:

Process

Memory Amount

Starting Location

P1 16MB 72MB
P2 12MB 88MB
P3 8MB 124MB
P4 4MB 132MB
P5 20MB 166MB

 

Now consider the following sequence of events in the system:

New process P6 starts and is allocated 28MB of memory.

New process P7 starts and is allocated 16MB of memory.

Process P2 terminates and releases its memory.

New process P8 starts and is allocated 16MB of memory.

Process P5 terminates and releases its memory.

New process P9 starts and is allocated 12MB of memory.

New process P10 starts and is allocated 4MB of memory.

Construct the memory layout after processing the above sequence of memory management events. Based on this layout, identify the TRUE statement among the following?

   

 

 

    a) The smallest free chunk has a size of 4MB.
    b) The largest free chunk is between 96MB and 128MB in size.
    c) Process P7's memory starts at 100MB.
    d) Process P9's memory starts at 244MB.
       

 

 

Q: Math:

 

Let S Be The Portion Of The Surface Z=1- X² – Y2 That Lies Above The Xy – Plane, And Suppose That S Is Oriented Up. Find The Flux Of The Vector Field F(X, Y,Z) = Xi + Yj+Zk Across S . (Hint: Parameterize The Surface And Use A Suitable Surface Integral].

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Transcribed image text: 10. Let S be the portion of the surface z=1- x² – y2 that lies above the xy – plane, and suppose that S is oriented up. Find the flux of the vector field F(x, y,z) = xi + yj+zk across S . (Hint: Parameterize the surface and use a suitable surface integral].

 

 

Q: Macro Economics:

Let A Denote The Event That A Sample Is From Supplier 1, And Lüt B Denote The Event That A Sample Conforms To Specifications. Determine The Number Of Samples In A' B, B', And AUB. 2-28. Samples Of Emissions From Three Suppliers Are Classified For Conformance To Air-Quality Specifications. The Results From 100 Samples Are Summarized As Follows: Conforms

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Transcribed image text: Let A denote the event that a sample is from supplier 1, and lüt B denote the event that a sample conforms to specifications. Determine the number of samples in A' B, B', and AUB. 2-28. Samples of emissions from three suppliers are classified for conformance to air-quality specifications. The results from 100 samples are summarized as follows: Conforms Supplier

 

 


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