Direct Execution

Direct Execution

University

9 Qs

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Direct Execution

Direct Execution

Assessment

Quiz

Computers

University

Practice Problem

Easy

Created by

Anfernee NG

Used 17+ times

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9 questions

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1.

REORDER QUESTION

1 min • 3 pts

Reorder the first five steps of a basic direct execution.

The OS sets up the stack with argc/argv

The OS allocates memory for a program

The OS clears registers

The OS creates an entry for a process list

The OS loads a program into memory

2.

REORDER QUESTION

1 min • 3 pts

Reorder the next five steps of a basic direct execution.

The OS removes the entry from the process list

The program runs main()

The program returns from main()

The OS frees the memory of a process

The OS calls main()

3.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

___________ mode allows code to perform privileged operations. This is where the OS runs.

4.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

_________ mode limits the capabilities of the programs that run in this mode.

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is a way for a user program to request privileged services from the kernel?

System Calls

Trap Tables

Trap Instructions

LDE Protocols

6.

DROPDOWN QUESTION

1 min • 3 pts

​ A​ (a)   tells the hardware what code to run when specific events occur. A​ (b)   jumps into the kernel and raises the privilege level to​ (c)   , and calls​ (d)   to go back into​ (e)   .

trap table
trap instruction
kernel-mode
return-from-trap
user-mode

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

In a cooperative system, how does the OS regain control of the CPU?

The OS regains control of the CPU every five seconds.

The OS does not need control of the CPU; it can perform any task while other processes are running.

The OS regains control of the CPU when the user program attempts unauthorized activity.

The OS regains control of the CPU when the user program makes a system call.

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