Answer:
Explanation:
A null pointer is pointing to nothing, if we can detect if a pointer is null, we can use an "IF" because a null pointer always going to be false, a null pointer even can block an application, because is a result of undefined behavior, it can even cause problems because the compiler can’t tell whether we mean a null pointer or the integer 0, there is a confusion in this kind of pointers.
Answer:
"Router screening" is the correct option.
Explanation:
- A router that philters packets like a firewall. For certain instances, the whole firewall system is such a single scanning router.
- Often connected to a network stage as well as a container-filter firewall has been the scanning router firewall. This rather firewall operates by filtering protocol characteristics from received packets.
So that the above seems to be the correct approach.
Answer:
Webcam
Explanation:
A webcam is mainly used for taking images or videos from the computer. the webcam is a combination of two basic words i.e. web and camera. webcam can be connected to any computer via USB. It can be mounted on the desktop and sometimes it comes inbuilt on the laptops.
A webcam is also used for face recognition function to login to a computer system.
so according to the scenario, the most appropriate answer is a webcam.
You could Factory Reset a computer or you could smash it with a hammer