What is the purpose of indexing?

To combine characters in order to form a single string
To combine two or more strings into one big string
To pull out a group of characters from a string
To pull out one specific character from a string

Usually, when we sniff packets, we are only interested certain types of packets. we can do that by setting filters in sniffing. scapy’s filter use the bpf (berkeley packet filter) syntax; you can find the bpf manual from the internet. set the following filters and demonstrate your sniffer program again (each filter should be set separately): (a) capture only the icmp packet. (b) capture any tcp packet that comes from a particular ip and with a destination port number 23. (c) capture packets comes from or to go to a particular subnet. you can pick any subnet, such as 128.230.0.0/16; you should not pick the subnet that your vm is attached to.

Why the bear has a slunky tail determine the meaning of the word slunk in the story

In which part of a professional email should you try to be brief, but highly descriptive?