Question

explain why

5. Which of the following are TRUE for the X86 call instruction? (A) Branches to a specified address: (B) Pushes the instruction pointer value onto the stack; (C) Its target address may be specified in a general-purpose register; (D) Pushes flag registers onto the stack. Answer: Questions 6 - 10. True/False (Total 25 points. 5 points/question) Write T (True) or F (False) on the blank before each statement. 6. The results of code fragment sizeof(int*)=sizeof(int) depends on the compiler and architecture. 7. If c is of type int* and b is of type int, c[b] is equivalent to *c+b. 8._ Security software focuses on engineering software so that it continues to function correctly under malicious attack. 9. _ Ethical hacking is about hacking into systems run by those whose ethics you disagree with Concurrency occurs when two or more separate execution flows are able to run simultaneously.

Answer 1

Answer 5) (B) and (C) are correct.

The call instruction in X86 pushes the pointer to the top of the stack and target address is required to be stored which may be stored in the general-purpose register.

Answer 6) True

the sizeof(int*) itself returns the size of pointer type int it maybe 4 bytes but they are 8 bytes on 64-bit machines that is it depends on the architecture of the machine.

Answer 7) True

c[b] gives the address at that b index in the array. But we can get the same by adding b to the base address that is *c.

Answer 8) False

security software focus on all types of Softwares and their motto is to detect and avoid any cyber-attack before it happens and not to makes software keep working under attack.

Answer 9) False

Ethical hacking is used to test software security under cyber attack. It is used to find vulnerabilities in the system and not to hack into someone's else computer

Answer 10) True

Concurrency means when multiple processes are running at the same time that is in parallel.