Operating System MCQs

A. Trap door
B. Fake process
C. Spawn process
D. Vax process

A. Virus destroy and modify user data
B. Virus is a standalone program
C. Virus is a code embedded in a legitimate program
D. Virus cannot be detected

A. When one participant in communication pretends to be someone else
B. When attacker modifies data in communication
C. When attack is of fraudulent repeat of a valid data
D. When attack gains access to remote systems

A. Robert morris
B. Bob milano
C. Mark zuckerberg
D. Bill gates

A. It is a software used to scan system for attack
B. It is a software application designed to probe a server or host for open ports
C. It is software used to scan system for introducing attacks by brute force
D. None of the mentioned

A. Tcp scanning
B. Syn scanning
C. Udp scanning
D. System scanning

A. Ack scanning
B. Window scanning
C. Igmp scan
D. Fin scanning

A. Are specific system which are designed to attack by manufacturer
B. They are network of known hacking group
C. These systems are previously compromised independent systems
D. None of the mentioned

A. It is attacked to block traffic of network
B. It is attacked to harm contents stored in hdd by worm spawn processes
C. It is an attempt to make a machine or network resource unavailable
D. None of the mentioned

A. We can stop dos attack completely
B. By upgrading os vulnerability we can stop dos attack to some extent
C. Dos attack has to be stopped at network level
D. Such attack can last for hours