"ICMP" <span>is used for supervisory messages at the internet protocol layer.
ICMP stands for </span>Internet Control Message Protocol and it refers to a supporting protocol in the Internet protocol suite. It is utilized by network devices which includes routers and these are used to send error messages and operational data showing, for instance, that asked for service which isn't accessible or that a host or switch couldn't be come to.
They instance, "user trial engineer" may refer to a human factors professional who specialists in user trails. Reliability works stress and training as these may relate to human-system and human-computer interaction design.
Answer:
Time to Live (or TTL)
Explanation:
This counter field is initially set at some value that is decremented by one each time the packet "hops." When the counter reaches zero the packet is disposed of.
I believe it is D. The Central Processing Unit (CPU) can manage memory and storage. It also makes sure every program has what it needs to keep it up and running.
