Computer science

I'm completely lost, need help to find which two are true:

A
A standard ID-1 payment card has a CVV1 code printed on it to assist
with ‘card-not-present’ transactions.
B
A four-digit decimal PIN (commonly used for payment cards) can provide
a wider range of combinations than a password based upon three
(English) alphabetic letters.
C
An EMV SDA card is less susceptible than an EMV DDA card to being
‘skimmed’ and ‘cloned’ for future fraudulent use.
D
In a secure session using TLS/SSL, symmetric encryption is used to
protect some of the data being sent between two computers.
E
An SDA EMV card uses the private key of a public key pair to encrypt a
response to an unpredictable challenge message sent to it by an EMV
terminal during a purchase transaction process.
F
In an ATM card transaction, a user’s entered PIN is used to derive a
PVV which can be compared within a hardware security module (HSM)
with the PVV registered for that account.
G
Each debit transaction carried out with a DDA EMV card requires
immediate online authorisation from the card issuer.

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  1. Since I do not see your choices and we do not DO the work for you, but HELP, here are some links with information for you:

    A: http://www.google.com/search?q=standard+ID-1+payment+card+with+a+CVV1+code&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    C: http://www.google.com/search?q=EMV+SDA+vs+EMV+DDA+card&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    D: http://www.google.com/search?q=TLS%2FSSL+how+is+data+protected+between+2+computers&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    E: http://www.google.com/search?q=how+does+an+SDA+EMV+card+encrypt+a+response+by+an+EMV+terminal&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    F: http://www.google.com/search?q=In+an+ATM+transaction%2C+how+is+the+PIN+used&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    G: http://www.google.com/search?q=each+debit+transaction+with+a+DDA+EMV+card+when+is+online+authorisation+required%3F&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

    Sra

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