Which of the following is not an error detection method used in the data link layer?
a. parity checking
b. cyclic redundancy checking
c. CRC-32
d. pulse code checking
e. odd parity
Ans: d. pulse code checking
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Initially, a ResultSet cursor is positioned _________.
a. before the first row b. at the first row c. at the last row d. after the last row
Which of the following is an example of an invalid assignment or declaration statement?
a) int age = 30; b) int money, dollars = 0, cents = 0; c) int years = 1; months = 12; days = 365; d) int length, meters, centimeters, millimeters; e) none of the above
Which of the following is a way to gain access to a protected system while another user is entering credentials?
A. Spim B. Shoulder surfing C. DDoS D. Backdoor
The first phase of the system development life cycle is system requirements.
Answer the following statement true (T) or false (F)