Computer.hardware.test

7/28/2019 Computer.hardware.test

1/21

16 bit modeLegace... can address 2

bytes at a time; cobol

and older applications

32 bit mode can address 4 bytes at a

time;

64 bit mode

can address 8 bytes at a time;

duo-core CPU's can operate 64

bit mode... should run faster

than 32 bits

adware

any software package which

automatically plays, displays, or

downloads advertisements to a

computer after the software is

installed on it or while the

application is being used

adware

reports on browsing

habits and reports and

sometimes pop up ads

and distasteful websites


2/21

application

management

registry... edit the

registry with regedit.exe

... or reg

Areas to optimize an OS

virtual memory; hard

drives; temporary files;

services; startup;

application

ATTRIB stand for whta kind of

file it is

Batch Files

A group of commands; extension

(.bat); contain DOS (command line)

can have .bat extensions tom.bat;

control c (cancel stops batch file

from running)

Be aware of how

memory affected the OS

in our lab

Virtual PC's ran slower...

mouse was slower... b/c we

didn't have enough RAM to

support (default for vista was

512 and vista wants 2 or 3 gig)


3/21

CD change director (cd\)

CLS clear screen

Command driven

interfaces

start/run/CMD/enter.....

DOS

Command Line; how do

you get to a command

line

start/run/cmd

computer virus

a computer program that can

copy istelf and infect a

computer without the

permission or knowledge of

the user.


4/21

cookies small file that contains

some id tags

COPY copy a bunch of files

CPU operation modes 16 bit and 32 bit and 64

bit

Creating and deleting

folders

naming conventions,

typically folders do not

have extentions,

describe

differences/similarities

in vista and windows xp

k


5/21

describe what batch files

are fork

DID (defense in depth)

provide multiple layers

of defense for the

computer, back it up!,

use strong passwords

Difference between

windows XP and vista

higher resolution/pixels,

sidebar, a lot of multi-media

enhancements, vista business

has no games

differences in

worm/virus

worm scans for ports

and doesn't need a host

to replicated whereas a

virus does

DIR listing of files (directory)


6/21

Disaster

prevention/planning

hard drives fail in 3-5

years; back everything

up

Disk management tools;

chkDSK

checks hard drive for

errors (once a month)

Disk management tools:

defrag

goes out and finds files that

are broken up into chunks and

puts them together which

speeds it up; when it defrags it

slows the computer down

disk management;

format

gives you a chance to get

a hard drive ready to

accept a new system

EDIT used to create a batch

file


7/21

Hard Disk Drives

Maintenance and

hazards;

don't like smoke;

hot/cold; droppage;

water or high humidity

areas or dust

how can you extend the

hard drives functional

life span

chkdsk; defrag; good

clean power; backups

How long does it take to

install virtual PC1 hour

icon driven interfaces unknown :)

IPCONFIG/ALL tells you about your

network configuration


8/21

KNOW how files,

directories, and files

structures are created

and maintained

1) start/run/CMD 2)

tree|more (hierchial file

structure, organizational

chart)

Linux Ubuntu, Mandrake, Red

Hat

List 3 FREE anti virus

software products

microsoft, McAffee

commercial, Avira, Avast

List disk management

tools

chkdsk; defrag; ms

config; format

List microsoft OS's (5)

Windows 9x; windows xp;

windows vista; windows

server; future windows

products is windows 7


9/21

Make sure your firewall

is on to protect

yourself!! Name two

cisco, microsoft

malware

a portmanteau from the words

malicious and software, is software

designed to infiltrate or damage a

computer system without the

owner's informed consent

MD make directory

Menu driven interfacestypically applications...

small devices like cell

phones...

menu interface

ALT F4 or ALT and the

letter.... accessibility

option- will end any

application in menu)


10/21

Methods of modifying

the registry

regEdit; pretty much

anything you do in

windows XP will modify

the registry

MS Config; what is it

and how is it used?

A way to see what our/how it is

configured at set up; shows how the

OS is configured at start up and

allows temporary modifications;

start/run/msConfig

Name 3 companies that

sell virus protection

software

Computer Associates

(CA), symantic, AVG

Name other OS's (4)Unix, Linus, Windows

Mobile and Other

mobile OS's, Macintosh

Name the three types of

user interfaces

GUI, Text based, menu

based (INTERFACES)


11/21

Name two types of

virtualizationVirtual PC; VM ware

Operational modes

16, 32, 64; Windows XP is in 32 bit

limited to 3GB of ram; can run a 64

b/c you can add more ram and run

faster; more ram can support more

applications and run faster;

PAUSE a type of batch files

PING if directory is there

Preventative

maintenance/ what

precautions to reduce

problems(3)

Periodically defrag, run

check disk, delete

temporary internet files


12/21

preventative

maintenancesupdates; backup

Products to protect

against a virusk

products to protect

against adwarek

protected modegood because it protects

memory from other

applications

RD remove directory


13/21

Real Mode

provides the application with

real access to all memory...

this is not good b/c you can

get memory interference

causing a crash

Run windows update

automatically or at least

how many times a

month?

ONCE a month... 2nd

tuesday of teh month

MS releases updates

spyware

reports what you are doing

and sometimes much worse...

records passwords and sends

them out to people

spyware

computer software that is installed

surreptitiously on a personal

computer to intercept or take

partial control over the user's

interaction with the computer,

without the users informed consent

Steps in protecting your

computer! (6)

1) use an antivirus 2) download windows

updates at least monthly 3) use a specific

anti spyware program like adaware 4)

have a back up 5) use secured sites by if it

has https:// means shared with a

protocol 6) use strong passwords and

don't download a bunch of stuff


14/21

system management

tools

device manager, task

manager, windows

management console,

MSConfig.exe, regedit, event

viewer

there are

8 bits in a bite! HIgher end OS

can read/understand things

faster (exponential in

increase)

There are four resources

to see how devices are

managed

DMA, IQ, IRQ, memory

three user interfaces GUI; txt interface; menu

interface

TOOLS: Device Manager;

What system resources are

used to manage devices and

how do they work

Look up what the drivers are and

what resources are assigned to your

hardware devices; device manager

is where all your devices get

managed;


15/21

Tracert where things are

happening

troubleshooting

recovery of operating systems; advanced

options menu; recognize and resolve

common operational problems; recognize

and resolve common error messages and

codes; use diagnostic utilities and tools to

resolve operational problems

txt interface dir/s

UNIX solaris; AIX(IBM), HPIX

(HP)

virtual memory

after primary (RAM) is full it

is memory space on your hard

drive; HDDs and temporary

files used, how does it work?

1000 times slower!


16/21

What are two major

products that support

virtualization

microsoft virtual PC,

VMware, Citrix

What do OS do? tell the computer how to

work

What does a yellow !

meanthere's a problem!

What does an OS do

manage hardware; provide a

user-interface; allow you to

install and use applications;

manage/save/retrieve files

what does backslash

represent? \the root


17/21

What functions are

provided by an

operating system

manages hardware, manages

applications, provides an

interface for users, manage

and save files

What happens when you

run out of RAM

virtual memory gets used...

VM is memory on the hard

drive which is MUCH (1000

x's) slower than RAM

What is a file

structure capable to contain data,

means there is an end of file and

digital format. Usually have a 3

character extension. MS office 2007

uses 4 (.docx) characters in its

extension

What is a folder a special file that

contains other files

What is proprietary? not shared (copy write)


18/21

What is the difference

between real and

protected mode

Real means they have access

to everything (memor) causes

crashes and problems while

protected mode OS protects

the one note memory space

what is the host key in

vistaright ALT

What is the windows XP

registry

everything in windows XP is

stored here. A big database

and everything you

do/change/install/configure

all happens in the registry

What is virtualization

the ability to load multiple

operating systems on one PC

(physical device) and not

destroy a different one

what is virtualization k


19/21

what is virtualization2

the ability to install an OS w/ out

damaging the current (host

operating systems); allows

companies to install multiple

servers on each server computer;

saves money

What products are out

there for virtualization

IMware; virtual pc (what

we used);

What RAM settings

must be changed before

installing virtual PC

1024

What software doesn't

like virtual PC is

attempting to do? and

how do you fix it?

symantec software; start/all

programs/symantec; from the

centralized exceptions select change

settings and add; after selecting security

risk exceptions navigate to the following

to locate the virtual pc executable file;

completed!

what software protects

from malwarek


20/21

What was the software

used to do virtualization

in class

virtualPC

Which OS allows you to

have the code

LINUX... open operating

system; provides you the

access to the code others

do not

why do we use virtual PC

to install an application

on our computers

to install, configure, and

learn

Why virtualization It can save businesses

thousands of dollars.

why worry about 16 bits? it's still in use!


21/21

Why would an antivirus

application have any

problem with using

virtual OS applications

antivirus protects us

from unautorized access

and antivirus thought

virtual PC was a virus

Why would you want to

know about

virtualization

cheaper for businesses, let's you

install a new OS without destroying

present one; if you must support

older applications can use VM to

support older ones

Will an anti-virus

protect you from all

adware/spyware?

NO

Windows and Non-

windows OS

1)close to a dozen OS 2) microsoft--

>way too slow and bulky 3)apple

4)linux 5)Unix(proprietary)no

access to code 6)cell phones have

an OS 7)DVR or personal assistant,

PDA (uses MAC OS)

worm

does not need to infect any

computer to replicate. it can

replicate by itself. scans for

open ports.

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Computer.hardware.test