OS Admin and Security - Chapter 3

______ is a program in execution

Process execution must progress in ______fashion

The program code, also called ______

Current activity including ______, processor registers

______ containing temporary data

Function parameters, return addresses, local variables

______ containing global variables

______ containing memory dynamically allocated during run time, such as Linked List

Heap containing memory dynamically allocated during run time, such as ______

Program is ______

Process is ______

Executable file is also known as ______

Which of the following statements is true?

Execution of program started via GUI ______, command line entry of its name, etc.

Which of the following statements is true?

As a process executes, it changes ______

The process is being created

Instructions are being executed

The process is waiting for some event to occur

The process is waiting to be assigned to a processor

The process has finished execution

When CPU switches from one process to another process, the system must ______ of the old process and load the saved state for the new process via a context switch

When CPU switches from one process to another process, the system must save the state of the old process and load the ______ for the new process via a context switch

When CPU switches from one process to another process, the system must save the state of the old process and load the saved state for the new process via a ______

Context of a process represented in the ______

Context-switch time is ______; the system does no useful work while switching

Which of the following statements is true?

Process Control Block (PCB) is also known as ______

Information associated with each process

Running, waiting, etc

Location of instruction to next execute

Contents of all process-centric registers

Priorities, scheduling queue pointers

Memory allocated to the process

CPU used, clock time elapsed since start, time limits

I/O devices allocated to process, list of open files

Maximize CPU use, quickly switch processes onto CPU for time sharing

______selects among available processes for next execution on CPU

Maintains scheduling queues of processes

Process scheduling maintains ______ of processes

Set of all processes in the system

Set of all processes residing in main memory, ready and waiting to execute

Set of processes waiting for an I/O device

Which one of the following statements is true?

Selects which processes should be brought into the ready queue

Long-term scheduler is also known as ______

Medium-term scheduler is also known as ______

Short-term scheduler is also known as ______

The ______ controls the degree of multiprogramming, I.e. How many process/programs could be brought into the ready queue.

The long-term scheduler controls the ______

Spends more time doing I/O than computations, many short CPU bursts

Spends more time doing computations; few very long CPU bursts

______ strives for good process mix I.e., a good combination of I/O bound, and CPU bound processes.

Long-term scheduler strives for good ______

Selects which process should be executed next and allocates CPU

______ can be added if degree of multiple programming needs to decrease

The medium term scheduler removes a process from memory, and then stores the process on the disk, as suspended process in ______ it is called swap out

The medium term scheduler removes a process from memory, and then stores the process on the disk, as suspended process in virtual memory, it is called ______

When the process is brought back in memory (RAM) from the disk (Virtual Memory), it is called ______

Some systems / early systems allow only one process to run, others suspended

Single ______ process- controlled via user interface

Multiple ______ processes– in memory, running, but not on the display, and with limits

Limits of Multitasking in Mobile Systems: Single, short task, receiving notification of events, specific long-running tasks like audio playback

Which one of the following statements is true?

Background process uses a ______ to perform tasks

Which one of the following statements is true?

Which one of the following statements is true?

Operating System must provide mechanisms for process creation, termination, and so on

Which one of the following statements is true?

Parent process create children processes, which, in turn create other processes, forming a ______ of processes

Process identified and managed via a ______

Parent and children share all resources - Children share subset of parent’s resources - Parent and child share no resources

Parent and children execute concurrently - Parent waits until children terminate

Child duplicate of parent - Child has a program loaded into it

______ system call creates new process

Which one of the following statements is true?

Process executes last statement and asks the operating system to delete it

Output data from child to parent via ______

Process’ resources are deallocated by operating system

Parent may terminate execution of children processes

Child has exceeded allocated resources

Task assigned to child is no longer required

If no parent waiting, then terminated process is a ______

If parent terminated, processes are ______

Many web browsers ran as single process (some still do)

In old browsers, if one web site causes trouble, entire browser can hang or crash

Google Chrome Browser is ______

______ process manages user interface, disk and network I/O

______ process renders web pages, deals with HTML, Javascript, new one for each website opened

______ process for each type of plug-in (such as Flash or QuickTime) in use.

Renderer runs in ______ restricting disk and network I/O, minimizing effect of security exploits

Which one of the following statement is true?

Processes within a system may be ______ or cooperating

Processes within a system may be independent or ______

______ process can affect or be affected by other processes, including sharing data

Information sharing - Computation speedup - Modularity - Convenience

Cooperating processes need ______

What are the two models of Interprocess Communication (IPC)?

Windows operating system uses ______ facility for interprocess communication, which is Message-passing centric.

LPC Only works between ______

LPC uses ______ to establish and maintain communication channels

In communication in LPC: The client opens a handle to the subsystem’s ______ object.

In communication in LPC: The client sends a ______

In communication in LPC: The server creates two private ______ and returns the handle to one of them to the client.

The client and server use the corresponding port handle to send messages or callbacks and to listen for replies.

______ is defined as an endpoint for communication

A number included at start of message packet to differentiate network services on a host

Which one of the following statements is true?

Which one of the following statements is true?

Which one of the following statements is true?

Special IP address 127.0.0.1 to refer to system on which process is running

Which IP is a loopback IP?

______ abstracts procedure calls between processes on networked systems

______ only works between processes on the same system

______ uses ports (like mailboxes) to establish and maintain communication channels

Client-side proxy for the actual procedure on the server

The ______ locates the server, and pass the parameters to the remote procedure

The ______ receives this parameters, and performs the procedure on the server.

Which one of the following statements is true?

Which one of the following statements is true?

Acts as a conduit allowing two processes to communicate

______ writes to one end (the write-end of the pipe)

______ reads from the other end (the read-end of the pipe)

Ordinary pipes are ______

Require parent-child relationship between communicating processes

Which one of the following statements is true?

Name pipes are ______

No parent-child relationship is necessary between the communicating processes