2.3 Flashcards

1
Q

antivirus software

A

locate and delete viruses.

scans each file on the computer and compares it against a database of known viruses

similar features to a viruses in the database are identified and deleted

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2
Q

other roles of antivirus

A

checking all incoming and outgoing emails and their attachements

checking files as they are downloaded

scanning the hard drive for viruses and deleting them

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3
Q

firewall

A

manages incoming and outcoming network traffic

each data packet is processes to check whether it should be given access to the network by checking its destination address

unexpected data packets will be filtered out and not accepted

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4
Q

other roles of firewall

A

blocking access to insecure malicious websites

blocking certain programs from accessing the internet

blocking unexpected unauthorized downloads

preventing specific users on a network to access certain files

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5
Q

defragmentation

A

this is when file is split into parts and stored in different locations on the hard disk drive

files that are fragmented take longer to load and read because of the distance between fragments of the file

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6
Q

defragmentation software

A

used to rearrange the file on the hard disk drive so that all parts are together again in order

improves the speed of accessing data on the hard disk drive

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7
Q

compression

A

compression is to decrease the size of a file

more files can be stored on a storage device if the size has been reduced

compressed files can be sent more quickly across a network

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8
Q

system monitors

A

checks the resources of a computer and display how much cpu time and memory current applications are using

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9
Q

task managers

A

allows a user to close processes and applications if they have stopped responding or if one is using too many resources

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10
Q

disk cleaner

A

disk cleaners scan a hard disk drive and remove unused files

this can free up space

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11
Q

disk scanner

A

will scan a hard disc drive for any errors and attempt to repair them

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12
Q

backing up data

A

is a copy of data that can be used if the original data is corrupted or lost

should be made regularly and stored in an alternative location

imaging creates a identical image of a storage device to be stored in a different location

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