Which Type of scan sends a packets with no flags set ? Select the Answer
Answer(s): B
The types of port connections supported are:
While doing fast scan using –F option, which file is used to list the range of ports to scan by nmap?
Nmap uses the nmap-services file to provide additional port detail for almost every scanning method. Every time a port is referenced, it's compared to an available description in this support file. If the nmap-services file isn't available, nmap reverts to the /etc/services file applicable for the current operating system.
Bob is a Junior Administrator at ABC.com is searching the port number of POP3 in a file. The partial output of the file is look like:In which file he is searching?
Answer(s): A
The port numbers on which certain standard services are offered are defined in the RFC 1700 Assigned Numbers. The /etc/services file enables server and client programs to convert service names to these numbers -ports. The list is kept on each host and it is stored in the file/etc/services.
Exhibit: Please study the exhibit carefully.Which Protocol maintains the communication on that way?
Answer(s): C
A TCP connection is always initiated with the 3-way handshake, which establishes and negotiates the actual connection over which data will be sent.
What are the four steps is used by nmap scanning?
Answer(s): A,C,D,F
Nmap performs four steps during a normal device scan. Some of these steps can be modified or disabled using options on the nmap command line.
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