Answer: Well known ports
Explanation:
DHCP server transmit the response to the dynamic host configuration server protocol (DHCP) clients. DHCP default port is 67 and its port number is greater than the user data-gram specific port.
FTP server has its default listen at port 21 and file transition protocol(FTP) uses two transmission control protocol(TCP) connection for communication in the network. FTP passes information in port number 21, which is only used to send control information.
Well known port are use to identify the service of network on the public internet and private internet network. Therefore, port 21 and 67 are the well known ports.
Answer:
Option B i.e.,802.11ac is the correct option.
Explanation:
Because 802.11ac is that standard that is selected by the technician to install that router which is wireless and that router has the fastest speed of the data transfering that is 5GHz frequency. Mostly, the following standard is used in the large organizations by which the work done on time without any restriction to access the internet. So, that's why the following option is correct.
The answer would be d, none kf the above.
