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10 Cards in this Set

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  • Back

ALL computer/network troubleshooting is based on which 4 major hardware subsystems?

a. CPU

b. Memory (aka RAM or short term memory)

c. Disk (aka HDD/SDD or long term memory)

d. Network

What is a process?

A process is just software that is running on a system. A process consists of at least one thread.In computing, a process is an instance of a computer program that is being executed. It contains the program code and its current activity. Depending on the operating system (OS), a process may be made up of multiple threads of execution that execute instructions concurrently.

What is a thread?

A thread of execution is the smallest sequence of programmed instructions that can be managed independently by an OS scheduler.

What is a handle?

In computer programming, a handle is an abstract reference to a resource. Handles can be:

a. Files or folders that a process needs

b. Registry keys that a process needs.

c. Events

d. Graphical objects that a process is using.

What are the different process states?

The different process states are:

a. Created-state of just created

b. Waiting-state of waiting for CPU time

c. Running-state of the code being executed by the CPU

d. Blocked-state of waiting for something (input from user, file to open, etc).

e. Swapped out and Waiting-state of being swapped out to the page file and awaiting execution.

f. Swapped out and Blocked-state of being swapped out to the page file and being blocked by something.

g. Terminated-state of being terminated (closed down)

What is the act of a process going from a waiting state to a running state called?

The act of a process going from waiting to running is called "context switch"

What is a (computer) service?

Services are just software that's running on the machine. Services are launched (either automatically or manually). A service is an application or innate operating system component that provides capabilities to the network, the local machine, or both.

What is a DLL?

DLLs are shared software libraries that exist in the kernel and are called by most or all other programs. DLLs are libraries of resources and can be executables themselves but are not launchable as such and have to be launched from within a process.

What are the two major categories of DLLs?

The two major categories of DLLs are:

a. The 'common' DLLs found in the OS' kernel. These have been written by Microsoft for software developers. These DLLs are located in System32. And there are LOTS of them!

b. DLLs specific to a piece of software that the developer has written to be used with that software. This can usually (but not always) be found in the specific software folder in 'Program Files'.

What is the SysWOW64 folder for?

The C:\Windows\SysWOW64 folder contains 32 bit versions of programs that can be ran on a 64 bit system.