More help with Python please help! Either of the questions I'd appreciate!

Is an attack that relies on guessing the isns of tcp packets

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

Freya realizes she does not have enough in her bank account to use the debit card. she decides to use a credit card instead. which questions should freya answer before using a credit card? check all that apply. can i pay at least the minimum payment each month? can i make payments on time and avoid late fees? will i have to take out a loan? how much in finance charges can i afford to pay? should i talk to a consumer credit counseling service?