Computers and Technology, 26.12.2020 17:50 Justadumbemo
An electronic pet flap is fitted with an RFID receiver to provide an automated security system that unlocks the pet flap as the animal approaches and locks it again once it has moved away. A unique collar worn by the pet is also fitted with an active RFID transponder.
a) The active RFID transponder worn by the animal is powered by a small battery. Why might a passive system not be suitable in this instance? [1]
b) Describe the principles of operation of the RFID system in locking and unlocking the pet flap. [3]
c) Suggest a potential problem with this system.
Answers: 2
Computers and Technology, 23.06.2019 01:00
Petrică, tânăr licean în clasa a ix-a, a primit în dar de la părinţii săi un cont bancar pentru micile sale cheltuieli curente. el este pasionat de internet banking şi îşi verifică cu grijă toate tranzacţiile efectuate. pentru creşterea securităţii tranzacţiilor online, banca îi furnizează lui petrică un număr pe care el va trebui să îl modifice, obţinând un număr tan – număr de autentificare a tranzacţiei (transaction authentication number). regula de obţinere a numărului tan este următoarea: se formează cel mai mic număr par din toate cifrele numărului furnizat de bancă. cerinţă cunoscând numărul n furnizat de bancă, să se determine numărul tan obţinut de petrică. date de intrare fişierul tan.in conţine pe prima linie numărul natural n cu semnificaţia din enunţ. date de ieşire fişierul de ieşire tan.out va conţine o singură linie pe care va fi scris numărul tan cerut. restricţii • 0 < n < 18*1018 • n are cel puţin o cifră pară • numărul tan obţinut nu poate conţine zerouri nesemnificative
Answers: 2
Computers and Technology, 23.06.2019 14:00
Select the correct answer. andre was recently hired by an organization to check for system vulnerabilities. he is supposed to exploit these vulnerabilities and create a report on the extent of damage to which the system was susceptible. what position does andre hold in this organization? a. information security analyst b. information assurance manager c. penetration tester d. network security engineer e. chief information security officer
Answers: 2
Computers and Technology, 24.06.2019 09:00
Technician a says that a new replacement part is always good. technician b says that sometimes recent repair work will be the cause of a complaint. who is correct? a. both technicians a and b b. technician a c. technician b d. neither technician a nor b
Answers: 3
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