Computer Applications for Data Backup, Information
Session 7: Computer Applications for Data Backup, Information
Searching and Learning
Learning Tasks
By the end of this session, students are expected to be able to:
I. DATA BACKUP
What is Data backup?
able to restore them in case of data loss.
Data Loss.
o To recover data after its loss, by data deletion or corruption.
o To recover data from an earlier time, according to a user-defined data retention policy
typically configured within a backup application for how long copies of data are required.
o Large File Transfer
o Human Error Eraser
o Virus Protection and Spyware Protections
o Prevent from Hard Disk Failure
o Prevent from Events beyond Human Control
o Free Up Disk Space.
HMIS NOTES
B.Boy
Describe eight (8) Data backup storage media
backup, archiving, and interchange.
competitive with magnetic tape as a bulk storage medium.
personal computers to store data.
drives, CompactFlash, SmartMedia, Memory Stick, Secure Digital cards are very
convenient for backing up low data volumes.
events such as fires, floods, or earthquakes which could destroy locally-stored backups.
restore in milliseconds of time.
useful for backup data storage.
media: for example inserting a tape into a tape drive or plugging in a cable.
o Off-site data protection: To protect against a disaster or other site-specific problem, many
people choose to send backup media to an off-site vault.
o The vault can be as simple as a system administrator's home office or as sophisticated as a
disaster-hardened, temperature-controlled, high-security bunker with facilities for backup
media storage.
equipped for data storage.
HMIS NOTES
B.Boy
Explain the Importance of Backing up Data
o Computers can do a lot of damage in a very short period of time.
o The fastest erasers known consist of a fast computer combined with an unprepared or tired
brain.
o Backup systems can save hours, days or months of trying to reconstruct valuable data.
o Before any important system change, such as adding hardware or software, it is important
to remember to backup all data before installation of the new system.
o MTBFs (Mean Times Between Failure) have improved dramatically in the past several
years for all peripherals.
This refers to data capacity and the amount of data that can be lost if the disk fails.
The problem is, nobody knows when a failure will occur.
o According to the Murphy's Law, the loss will occur at the worst possible time.
o Backup systems give immediate and automatic protection from unpredictable disk failures.
o Some unscrupulous individuals continue to write viruses that innocently hide in shareware
programs and all throughout the Internet.
o These programs have the capability to copy themselves and load into the system along with
the software that we downloaded from the internet.
o Once loaded, they proceed to wreak havoc the system, causing errors, lockups and loss of
data.
o A reliable backup system can restore data lost through virus infection when used in
conjunction with good virus detection software and an earlier backup.
o It is not easy to stop the steady growth of application software and related data in the
system.
o The only way of resolve this problem is to offload some of the less-used files from the hard
disk to a secondary storage medium like tape or DVDs.
o Removing those inactive files can open up the hard disk for new programs or growing data
files.
HMIS NOTES
B.Boy
o Inexpensive DVD or tape cartridges are a sure way to archive the programs and data
while still keeping them accessible when needed.
o It can enable to put off buying a larger disk.
o Both natural and manmade disasters inject a disconcerting variability into any application
that requires large amounts of data storage.
These include fire, floods, lightning and outright theft.
o After such an occurrence:
Business will failed to survive.
Regenerating vital billing or customer information would be very difficult from paper
records, if not impossible.
o Backup systems protect data against such calamity.
It was advised to do an extra backup weekly and store the backup either in a fireproof
safe or at an offsite location.
If the system goes, the data stays
It may mean the difference between business as usual and bankruptcy.
o Transferring large volumes of data can be time-consuming.
o Tape backup drives in particular have the capacity for very high data transfer rates
making them ideal for moving large quantities of data between systems.
o Tapes are also compact, inexpensive and have a long shelf life.
The data are archived and accessible for years to come.
With a tape backup system a system user can conveniently send a tape cartridge across
the country, through the mail or across the office in a shirt pocket.
HMIS NOTES
B.Boy
Explain the Causes of Data Loss
o The top risk of losing data is deleting files or parts of texts without having any backups
available.
o Updating files or deleting them is very common activities and we do them almost every
day.
o No wonder if we accidentally delete wrong files or overwrite the parts we did not intend.
o We often lose data simply because we do not have proper workflow procedures and backup
strategies.
o More efficient procedures for saving our work and making backups regularly will
definitely save a lot of time for us.
o There are numerous new viruses which attack computers every day.
o Being connected to worldwide network has many advantages; however, it opens computers
to many serious risks.
o Damages may differ greatly but the majority of viruses affects operational software,
misuses Internet connection and damages stored data.
o There are many different types of viruses and, often, data loss is just a side effect of some
larger damage done to operational system.
o The most dangerous are the attacks targeted to steal and damage business data.
Imagine the value of client databases, technical inventions, patient health information
essential for treatment and medication or financial transactions' history of the health
organization are destructed/ damaged with viruses.
o Hard drives of computers are the most fragile parts of computers; they break down more
often than any other device connected to computing.
o There are so many moving parts inside of hard drives that it is no wonder they break down
so easily.
o Once the serious problem occurs in the hard drive, there is no way even a professional
services provider can totally recover the important data in the drive.
o Memory devices are also often damaged when computers are accidentally dropped.
o Regular backups really help in case of hardware troubles.
HMIS NOTES
B.Boy
o There are two adversary effects of power failures.
When you are halfway through writing a long article and you have not saved it yet, then
in case of power going out you lose your data.
Another, even deeper problem may arise when power failures affect operation systems
or hardware of computers; shutting computer down suddenly without proper shutdown
procedures may cause problems with rebooting operation system later, these operation
system problems cause chain reaction and data might not be accessible any more.
o Sudden changes in voltage may damage many different computer parts.
Most problems can be solved by changing power supply unit but there are also a great
possibility for damaging other hardware elements of computer, e.g. hard drives and
other parts which are very sensitive to changes in voltage and strong magnetic fields.
o Having automatic backups enables to recover from any accidents caused by power
failures.
o It is a real tragedy to lose both computer and data at the same time.
o There is always the danger of burglars breaking the offices and stealing electronic devices.
o While traveling passengers leave the laptop in a bus/car, airport, conference centers,
coffee shops or any other crowded place.
o New computers cost some money, but very often the data saved to hard disks is even more
expensive.
o Even if there is no particular monetary value involved, personal memories, family pictures
or other heirlooms are certainly important and very valuable to any person who use
computer.
o Losing computer may be less painful, if a computer user use proper data backup strategy
and keep data in safe storage.
o Since laptop usage has been growing during past few years, the damages caused by
spilling drinks on to the computers have become more often as well.
o Average laptop does not have extra covers to protect internal parts from getting soaked.
o Liquids cause short circuit of important electronic components and they are really hard to
recover afterwards.
o Hard drives are usually placed in protective case and may be still used after getting a little
wet.
o However, harder soaking makes hard drives inaccessible.
o Another risk of the same category is dropping computer into water.
HMIS NOTES
B.Boy
o If the computer is completely immersed into water, it is really hard to fix anything
afterwards.
o Maybe visiting a repairman really quickly can save some parts of the computer appliances
otherwise it will be a useless computer.
o Also, if computer was not switched on at the moment of falling into water, the damage may
be less severe.
o Water accidents usually cause the loss of data saved to the hard drive.
o Explosions happen rarely but fire most probably completely destroys both a computer and
data saved on it.
o Fire is also dangerous to the backups that are stored in the same house.
o For example, having weekly backups stored on an external hard drive which is kept in
same building does not help much if the building burns down.
o In this case, both computer and backup drive will be destroyed and data will be completely
lost.
o The safest practice against fire is to make regular backups and keep them in other
(different) locations.
Mention eight 8 application software for Data backups
HMIS NOTES
B.Boy
II. COMPUTER VIRUS
HMIS NOTES
B.Boy
What is Computer Virus?
or erases data files
Symptoms of Virus Attack
Types of Computer Virus
HMIS NOTES
B.Boy
Explanation of Each Type of Virus
o A time bomb
o A logical bomb
has occurred.
o A worm
information, clogging the system so that its operations are slowed down or stopped
o A boot sector virus
virus is loaded into main memory and destroys data stored in hard disk
o A macro virus
opening the infected document, macro virus is loaded into main memory and destroys
the data stored in hard disk
o Script Virus
edition (VBS) and the JavaScript programming languages
o Trojan Horse
application software. If executed, computer system will be damaged.
Blended Threat
viruses, worms, Trojan horses and malicious code into one single threat.
spread an attack.
HMIS NOTES
B.Boy
Characteristics of blended threats are:
o It causes harm to the infected system or network
o It propagates using multiple methods
o The attack can come from multiple points
o The threats also exploit vulnerabilities
What is Spyware or Adware or Malware?
o Are illegal programs that come onto computer through browsing from internet
o It can slow the computer
List five (5) types of Malware
Actions to prevent Computer from virus infection
HMIS NOTES
B.Boy
III. COMPUTER ANTIVIRUS
The Program designed to protect computer from Virus Infections.
List Five 5 Common Exapmle of Antivirus program
Importance of Computer Ant viruses
(Write this points If the Questions asked on Short answer, if it’s on Essay then use Benefits
as Importance)
HMIS NOTES
B.Boy
The benefits of using antivirus software in the computer system
o Antivirus has the primary job of detecting any sought of viruses, spyware, malware and
other unknown threats and removing the same before they can do any harm to the data
present in a computer system.
Define Phishing
o Phishing is termed as an unauthorized attempt by any third person or hacker to access the
data present in the system, with the intention of stealing the same or infect the data so that
it can’t be usable to the user.
o With the increased use of the internet, various online cyber threats are affecting the data
security of the computer.
o Antivirus software takes control of the web activities limiting unauthorized access of any
online threat.
o Antivirus Software provides the advantage of quick scanning of any removable device
connect to the computer system and scans it for any unknown threats.
o The external drives are opened automatically after complete scanning of the removable
devices and removing any unknown threats present in it.
Define Firewall
Isa Network Security device that monitor Incoming and Outgoing Network traffic and decide
whether to allow or block specific traffic based on a defined set of security rules.
A firewall it can be hardware, software or both.
Firewall acts as a barriers between
HMIS NOTES
B.Boy
o Antivirus Software provides two-way firewall protection which puts a check in every
incoming and outgoing data/mail through the internet and blocks the same if it finds
something suspicious during transmission.
Enlist type of Firewall Solutions
o At present, most of the viruses and spam attacks are executed from the pop-up ads and
other spam website whose original intention is to steal confidential information from user’s
computer which could result in big financial losses.
o Some significant antivirus software provides the feature of password protection which
protects them from getting stolen by any third person or hackers.
o Nowadays, antivirus software developed in such a way that they don’t hamper the system
performance.
o Rather they come with built in modules which automatically deleted unwanted files and
folders from the computer system, thus increasing its performance speed.
Disadvantages of Ant viruses
HMIS NOTES
B.Boy
IV. INTERNET
By definition Internet refers to huge number of computer that shares resources and
information through network.
OR
Is the collection of massive number of computer that share resources and information
through network.
Internet can be accessed different multi medias.
Network is the protocol/ algorithm that allow communication between electronic devices.
Protocol means rules/ principles that guides electronic devices.
i.e http-Hyper Text Transfer Protocol
FTP-File Transfer Protocol
DSL-Digital Subscriber Line
ISP- Internet Services provider
IP- Internet Protocol
SMTP-Simple Mail Transfer Protocol
IMAP- Internet Message Access Control
INTRANET
Is a relatively smaller private Network that uses the Internet Protocol and connectivity.
EXTRANET
It is a private Network uses Internet Technology to share a part of the business Information and
operations with Suppliers and Customers
It can be part of Intranet that provides access to the users outside the Company.
HMIS NOTES
B.Boy
What are the Importance of Internet to the society?/ Explain uses of Internet and the
Web
TERMINOLOGIES FOUND ON INTERNET
Web
Website
Webpage
Web browser
Search Engine
HMIS NOTES
B.Boy
Web
Is the Multimedia Interface of the resources available on Internet.
Nowadays it use machine Learning to display Information on Internet.
HMIS NOTES
B.Boy
Website
Is the massive collection of Information found on Internet hence set as the Home page of WWW
(World Wide Web)
HMIS NOTES
B.Boy
Web page
Is the sheet that display materials found on the website.
HMIS NOTES
B.Boy
Web browser/ Internet Navigator
Is the software designed to display web pages.
List examples of Commonly used Web browser.
HMIS NOTES
B.Boy
Search Engines
The software programs designed to locate user for searching different Information on
Internet.
OR
Are Websites through which users can search internet contents.
List examples of Commonly used Search Engine.
HMIS NOTES
B.Boy
Enlist The four(4) top medical information search engine websites
HMIS NOTES
B.Boy
URL (UNIFORM RESOURCES LOCATOR)
Is the pathname to display resources available on internet
List the parts of URL
o Protocol
Protocols are rules for exchanging data between computers. The protocol http:// is the
most widely used Web protocol.
o Domain name (top level domain)
It is the name of the server where the resource is located. www.mtv.com is an example
of Server (Many URLs have additional parts specifying directory paths, file names, and
pointers.) The last part of the domain name following the dot (.) is the domain code. It
identifies the type of organization. For example, .com indicates a commercial site. The
URL http:// www.mtv.com connects your computer to a computer that provides
information about MTV.
o Domain code (example com)
Example
http://www.kiccohas.ac.tz/Login.index.html
Protocol Host Name Document Name
Name
HMIS NOTES
B.Boy
DOMAIN NAME
organization and the country in which the organization is located.
Domain name of a host computer includes
Example
www.kiccohas.ac.tz
Server Name Organization Type of Country Name
Name Organization
HMIS NOTES
B.Boy
Common Abbreviations in URLs
Abbreviations Meanings
Ac Academic
Co Company
Com Commercial
Edu Educational
Gov /go Government
mil Military
Org/ or Non Profit Organization
List five Internet Communications
HMIS NOTES
B.Boy
Explanations on Internet Connections
1. E-MAIL
Definition Email is the transmission of electronic messages from sender to
receiver through Internet
One way that people communicate with each other on the internet is by using electronic
It is like writing a real letter only typed an then transmitted over the internet.
Email message consists of five parts
E-MAIL ADDRESSES
Each email user has a name(Called a username or user account) and a server that holds
their email.
The username and server name are joined together to make your email address.
They are joined using the @sign, which distinguishes it from a web address.
For example: kosialucas14@Hotmail.com
HMIS NOTES
B.Boy
Advantages of email
Disadvantages of email
i.e Spamming is the process of sending insolated bulk message over an Email.
Mentions the Steps Required to Send Certain Document on Email (Practical)
email you want to send it to the Click Send to send.
HMIS NOTES
B.Boy
2. INSTANT MESSAGE (IM)
o Instant messaging (IM) is an extension of e-mail that allows two or more people
to contact each other via direct, live communication.
o To use instant messaging, you specify a list of friends (also known as buddies or
contacts) and register with an instant messaging server.
o Whenever you connect to the Internet, special software informs your messaging
server that you are online.
o In response, the server will notify you if any of your contacts are online.
o At the same time, it notifies your contacts that you are online.
o You can then send messages directly back and forth to one another.
o Many new instant messaging programs also include videoconferencing
features, file sharing, and remote assistance.
o To see how Instant Messaging works, visit us at www.olearyseries.com/CE06
and select Animations.
o The most widely used instant messaging services are AOLs Instant Messenger,
Microsoft's MSN Messenger, and Yahoo Messenger.
o One limitation, however, is that many instant messaging services do not support
communication with other services.
HMIS NOTES
B.Boy
3. DISCUSSION GROUPS
o You can also use e-mail to communicate in discussion groups with people you
do not know but with whom you wish to share ideas and interests.
o You can participate in forums and debates that range from general topics like
current events and movies to specialized forums like computer troubleshooting
and Hollywood animations. Discussion groups include mailing lists, news-
groups, and chat groups.
Mailing lists
list.
request to the mailing list subscription address.
Figure 7: Below is the Popular Mailing List:
DESCRIPTION SUBSCRIPTIONADDRESS
Music and bands dbird@netinfo.com.au
Movies moviereview@cuenet.com
Jokes Jokeaday.com
Travel tourbus@listserv.aol.com
the list.
subscription address.
HMIS NOTES
B.Boy
Newsgroups
are further subdivided into subtopics.
UseNet.
recent messages with the other computers on the UseNet.
reading only those of interest.
Figure 8: Popular Newsgroups
Description Newsgroups
aerobics fitness Misc.ftness.aerobic
Cinema Rec.arts.movies
Mountain biking Rec.bicycles.off-road
Music Rec.misic.hip-hop
Clip art Alt.binaries.cli-art
HMIS NOTES
B.Boy
Chat groups
face.
live with others by typing words on your computer.
and can respond in the same manner.
in which you are interested, and begin chatting.
done using special chat-client software.
observe or read the communications from others.
discussion group.
for-in which case, unsubscribe.
prevailing culture.
HMIS NOTES
B.Boy
List five Internet Connections
INTERNET SERVICES
LIST 3 CATEGORIES OF INTERNET SERVICES
List the ways that the Pharmaceutical Science students uses Internet
HMIS NOTES
B.Boy
DISSEMINATING OF PHARMACEUTICAL INFORMATION
Importance of Internet in disseminating pharmaceutical information
List Electronic Media used to disseminate Pharmaceutical Information
List Printed Media used to disseminate Pharmaceutical Information
HMIS NOTES
B.Boy
V. TECHNIQUES OF SEARCHING INFORMATION ON THE INTERNET
HMIS NOTES
B.Boy
Search Strategies/ Ways of Searching Information on Internet
HMIS NOTES
B.Boy
Explanation for Each type of Searching Technique
Keyword Searching
HMIS NOTES
B.Boy
Boolean Searching
It’s the kind of Search that uses the words as AND,OR and NOT
Boolean Searching – AND
(ie. “global warming” AND California
HMIS NOTES
B.Boy
Boolean Searching – OR
(ie. “global warming” OR “greenhouse effect”)
HMIS NOTES
B.Boy
Boolean Searching – NOT
the second term
(ie. Washington NOT school)
How to Use Boolean Logic
o Search: cats OR felines
o Search: cats felines
o Search: dyslexia AND adults
o Search: +dyslexia +adults
o Search: radiation NOT nuclear
o Search: radiation -nuclear
o Search: (cats OR felines) AND behavior
o Search: cats felines +behavior
HMIS NOTES
B.Boy
Question Searching
Phrase Searching
o Use quotation marks when the words should stay together in the order you typed
them.
o Search: “Abraham Lincoln” will find results with the president’s name. If you
just search abraham lincoln, you will get results that include any abraham and
any lincoln.
o Search: “math lesson plans”
o Search: “space shuttle”
Case Sensitivity Searching
command the engine to only look for a proper noun, thus narrowing your search.
CAPITALIZATION- Bill, bill, Gates, gates, Digital, digital, Lotus, lotus
HMIS NOTES
B.Boy
Field Searching
address of the site has a field, a picture has a field, etc.
name of the web site for example, or if you are just looking for pictures of tigers…
o title:welcome to Adobe Golive
o image:tiger
o anchor:click for HyperStudio stacks
all the sites that have this command somewhere on them. This example will enable you
to find many HyperStudio stacks.
HMIS NOTES
B.Boy
Procedures of searching information on the internet
Google.
Step 1: Go to Google (But Which Google?)
Figure 10: Google Search
the user to the main Google web site, which is designed to serve the world in general.
Step 2: Go To Google via a Toolbar
popular browsers.
HMIS NOTES
B.Boy
Figure 11: Omnibox
Step 3: Enter Search Terms
box.
Figure 12: Search box
HMIS NOTES
B.Boy
Step 4: Review Search Results
Figure 13: Search results
HMIS NOTES
B.Boy
Step 5: Preview Answers
you’re looking for.
Step 6: Refine the Google Search
are its best guess.
HMIS NOTES
B.Boy
Evaluation Questions
Computer virus refers to a program which damages computer systems and/or destroys or
erases data files
While
Antivirus are programs that’s designed to protect computer from virus Infectiions.
o Antivirus has the primary job of detecting any sought of viruses, spyware, malware and
other unknown threats and removing the same before they can do any harm to the data
present in a computer system.
Define Phishing
o Phishing is termed as an unauthorized attempt by any third person or hacker to access the
data present in the system, with the intention of stealing the same or infect the data so that
it can’t be usable to the user.
o With the increased use of the internet, various online cyber threats are affecting the data
security of the computer.
o Antivirus software takes control of the web activities limiting unauthorized access of any
online threat.
o Antivirus Software provides the advantage of quick scanning of any removable device
connect to the computer system and scans it for any unknown threats.
o The external drives are opened automatically after complete scanning of the removable
devices and removing any unknown threats present in it.
HMIS NOTES
B.Boy
Define Firewall
Isa Network Security device that monitor Incoming and Outgoing Network traffic and decide
whether to allow or block specific traffic based on a defined set of security rules.
A firewall it can be hardware, software or both.
Firewall acts as a barriers between
o Antivirus Software provides two-way firewall protection which puts a check in every
incoming and outgoing data/mail through the internet and blocks the same if it finds
something suspicious during transmission.
Enlist type of Firewall Solutions
o At present, most of the viruses and spam attacks are executed from the pop-up ads and
other spam website whose original intention is to steal confidential information from user’s
computer which could result in big financial losses.
o Some significant antivirus software provides the feature of password protection which
protects them from getting stolen by any third person or hackers.
o Nowadays, antivirus software developed in such a way that they don’t hamper the system
performance.
o Rather they come with built in modules which automatically deleted unwanted files and
folders from the computer system, thus increasing its performance speed.
HMIS NOTES
B.Boy
o The top risk of losing data is deleting files or parts of texts without having any backups
available.
o Updating files or deleting them is very common activities and we do them almost every
day.
o No wonder if we accidentally delete wrong files or overwrite the parts we did not intend.
o We often lose data simply because we do not have proper workflow procedures and backup
strategies.
o More efficient procedures for saving our work and making backups regularly will
definitely save a lot of time for us.
o There are numerous new viruses which attack computers every day.
o Being connected to worldwide network has many advantages; however, it opens computers
to many serious risks.
o Damages may differ greatly but the majority of viruses affects operational software,
misuses Internet connection and damages stored data.
o There are many different types of viruses and, often, data loss is just a side effect of some
larger damage done to operational system.
o The most dangerous are the attacks targeted to steal and damage business data.
Imagine the value of client databases, technical inventions, patient health information
essential for treatment and medication or financial transactions' history of the health
organization are destructed/ damaged with viruses.
o Hard drives of computers are the most fragile parts of computers; they break down more
often than any other device connected to computing.
o There are so many moving parts inside of hard drives that it is no wonder they break down
so easily.
o Once the serious problem occurs in the hard drive, there is no way even a professional
services provider can totally recover the important data in the drive.
o Memory devices are also often damaged when computers are accidentally dropped.
o Regular backups really help in case of hardware troubles.
HMIS NOTES
B.Boy
o There are two adversary effects of power failures.
When you are halfway through writing a long article and you have not saved it yet, then
in case of power going out you lose your data.
Another, even deeper problem may arise when power failures affect operation systems
or hardware of computers; shutting computer down suddenly without proper shutdown
procedures may cause problems with rebooting operation system later, these operation
system problems cause chain reaction and data might not be accessible any more.
o Sudden changes in voltage may damage many different computer parts.
Most problems can be solved by changing power supply unit but there are also a great
possibility for damaging other hardware elements of computer, e.g. hard drives and
other parts which are very sensitive to changes in voltage and strong magnetic fields.
o Having automatic backups enables to recover from any accidents caused by power
failures.
o It is a real tragedy to lose both computer and data at the same time.
o There is always the danger of burglars breaking the offices and stealing electronic devices.
o While traveling passengers leave the laptop in a bus/car, airport, conference centers,
coffee shops or any other crowded place.
o New computers cost some money, but very often the data saved to hard disks is even more
expensive.
o Even if there is no particular monetary value involved, personal memories, family pictures
or other heirlooms are certainly important and very valuable to any person who use
computer.
o Losing computer may be less painful, if a computer user use proper data backup strategy
and keep data in safe storage.
o Since laptop usage has been growing during past few years, the damages caused by
spilling drinks on to the computers have become more often as well.
o Average laptop does not have extra covers to protect internal parts from getting soaked.
o Liquids cause short circuit of important electronic components and they are really hard to
recover afterwards.
o Hard drives are usually placed in protective case and may be still used after getting a little
wet.
o However, harder soaking makes hard drives inaccessible.
o Another risk of the same category is dropping computer into water.
HMIS NOTES
B.Boy
o If the computer is completely immersed into water, it is really hard to fix anything
afterwards.
o Maybe visiting a repairman really quickly can save some parts of the computer appliances
otherwise it will be a useless computer.
o Also, if computer was not switched on at the moment of falling into water, the damage may
be less severe.
o Water accidents usually cause the loss of data saved to the hard drive.
o Explosions happen rarely but fire most probably completely destroys both a computer and
data saved on it.
o Fire is also dangerous to the backups that are stored in the same house.
o For example, having weekly backups stored on an external hard drive which is kept in
same building does not help much if the building burns down.
o In this case, both computer and backup drive will be destroyed and data will be completely
lost.
o The safest practice against fire is to make regular backups and keep them in other
(different) locations.
A data backup is the result of copying or archiving files and folders for the purpose of being
able to restore them in case of data loss.
OR is the process storing data or Information for future use hence to be restored in case of
Data Loss.
typically configured within a backup application for how long copies of data are required.
HMIS NOTES
B.Boy
Types of Computer Virus
Types of Anti Virus
HMIS NOTES
B.Boy
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