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UNIT 19 - PowerPoint PPT Presentation

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UNIT 19

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  1. UNIT 19 Data Security 2

  2. Reading 2

  3. Reading 2 • Use a virus protection programs. • Password – protect programs and data with passwords which cannot easily be cracked. • Make a full backups, which copy all files, periodically. • Control access to hardware. • Make a full backups, which copy all files, periodically.

  4. Reading 3

  5. Reading 3 • Incremental backups. • Shareware. • Uninterruptible. • Compromise. • Cracked. • Encrypt. • Firewall. • Monitor (verb). • Biometric. • Periodic.

  6. Language Work

  7. What is the relationship between them 1-The scanner finds a match for your fingerprint. 2- the keyboard is unlocked. 3- You can use the PC. • The way to link these sentences by : (Cause to - make - when clause - an if-sentences - therefore - with the result that )

  8. The way to link these sentences by : (permits – allows) • The keyboard is unlocked ,which allows /permits you to use the PC. OR • The keyboard is unlocked , allowing /permitting you to use the PC.

  9. The way to link these sentences by : (prevent – stop ) • The keyboard remains locked , preventing you ( from) using the PC. OR • The keyboard remains locked , stopping you ( from) using the PC.

  10. Language Work 4

  11. Language Work 4 • Accessing • To have • Allowing • To buy • Coiled • Creates • Causing • To broadcast • Allows • To withdraw • Get

  12. Language Work 5

  13. Language Work 5 • When a user runs anti-virus software, the software checks files for virus coding. If coding is matched to a known virus in a virus database, a message is displayed to the user that a virus has been found. If the user removes the virus or deletes the infected file, the virus is prevented from spreading or causing further damage.

  14. Language Work 5 • When you approach a high-security network, key features of your face are scanned. If the system matches your features to a database record of authorised staff, your identity is verified allowing you to logon. If your identity is not verified, you are stopped from using the system.

  15. Language Work 5 3. voice-activated computers without keywords will become more common .when the user wants to log on she speaks to the computer which matches her voice to database of voice patterns .if the user has a cold or sore throat she is allowed to use the system because stress and intonation patterns remain the same .

  16. Problem Solving 6

  17. Problem Solving 6 Eye Scanning: • Person looks through eyepiece. • Laser scans eye recording microscopic details. • Computer translates data into a unique barcode. Hand scanning: • Select the conversation language. • Insert the credit card. • Insert hand to be scanned. Database checks your hand print and then checks to make sure your ID matches that on the credit card.

  18. SpecialistReading

  19. SpecialistReading • Ecommerce, online-transaction processing, databases. • The amount of information that needs to be managed or stored on a network. • Tape libraries, RAID disks, optical storage • Multimedia • Distance limitations • Ethernet • Throughput limitations due to bandwidth, lack of cohesion among storage devices i.e. managing the devices can prove challenging.

  20. SpecialistReading • Almost any modem server. Most PC midrange and mainframe platforms. • By offloading many storage-related server tasks to the SAN and by better allocating storage recourses to servers. • Copper cabling or fiber-optic cabe.

  21. Specialist reading (part B): • 1- line 74 • 2/ a iv, b vi, c I, d ii, e iii, f v • 3/ a False, b True, c False, d False, e True, f False