GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 1029 - 1030 of 2080

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Question 1029

Question

MCQ▾

Your ATM debit card provides you with a 4-decimal-digit pin. A hacker can crack it by means of a brute-force attack, but it would take time- ‘t’ for the hacker to do the “trial and error” on the ATM terminal. Therefore, t is the secure-time for a customer to report in case the card is misplaced. Suppose your Bank has decided to facilitate an increased secure-time. Out of the following, which option should provide the largest rise in the value of ‘t’ ?

Choices

Choice (4)Response

a.

Instead of 4-decimal-digits, maintain the personal secret code in 4-octal-digits.

b.

Instead of 4-decimal digits, maintain a 5-decimal-digit personal secret code.

c.

Reduce the processing speed of the ATM terminals to the half of their current speed.

d.

Question does not provide sufficient data or is vague

Question 1030

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

Which layers of the OSI reference model are host-to-host layers? (June paper III)

Choices

Choice (4)Response

a.

Data-link, Network, Transport, Session

b.

Network, Transport, Session, Presentation

c.

Transport, Session, Presentation, Application

d.

Physical, Data-link, Network, Transport

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