Which of the following describes a Trojan horse?
A. Trojan horses track a computer user's keystrokes and any
websites visited in order to recognize trends or obtain credit card
information,
B. Trojan horses reproduce and attack computer systems, like email,
and do not depend on the users forwarding email attachments.
O c. Trojan horses enter a secure space, while an infected file proceeds
to be downloaded and run.
D. Trojan horses reproduce and attack computer systems, like email,
when users forward ails as attachments.

3. (6 pts) internally in the computer, with few exceptions, all numerical computation is done using binary numbers. output, however, often uses ascii, which is formed by appending 011 to the left of a bcd code. thus, an algorithm that directly converts a binary integer to a bcd integer is very useful. here is one such algorithm 1) draw lines to the left of the binary number to bound the expected bcd decades. (each decade is a group of 4 bits.) move the binary number one bit to the left. add 0011 to each bcd decade containing a binary value> 0100 repeat steps 2-3 until the last bit in the binary number has been moved into the least significant decade position. (note that when the last bit has been shifted into bcd decade, step 3 is not repeated.) read the bcd result. 2) 3) 4) 5) a) execute the algorithm for the binary number 1101101 b) execute the algorithm for the binary number 01110101110 4. (4 pts) represent the decimal number 3568 in bcd; excess-3 code; ascil; and hex.

Write a program that prompts the user to input a string. the program then uses the function substr to remove all the vowels from the string. for example, if str = "there", then after removing all the vowels, str = "thr". after removing all the vowels, output the string. your program must contain a function to remove all the vowels and a function to determine whether a character is a vowel.

You are new to microsoft certification and want to start out by getting a certification geared around windows 8. what microsoft certification should you pursue?