A tool which might be used by an attacker during the reconnaissance phase of an attack to glean information about domain registrations is: Whois.
<h3>What is a DNS server?</h3>
A DNS server can be defined as a type of server that is designed and developed to translate domain names into IP addresses, so as to allow end users access websites and other internet resources through a web browser.
This ultimately implies that, a DNS server refers to a type of server that translate requests for domain names into IP addresses.
In this context, we can infer and logically deduce that Whois is a tool which might be used by an attacker during the reconnaissance phase of an attack to glean information about domain registrations.
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Answer:
Explanation:
The following code is written in Java. It creates the abstract dollar class that has two instance variables for the dollars and the coins that are passed as arguments. The test output can be seen in the picture attached below.
class Dollar {
int dollars;
double coin;
private Dollar(int dollar, int coin) {
this.dollars = dollar;
this.coin = Double.valueOf(coin) / 100;
}
}
Answer: (B) Allow the firewall to accept inbound traffic to ports 80, 110, 143, and 443
Explanation:
Port 80 is used by HTTP, 110 by pop3 to retrieve emails from web servers, 143 by imap for internet messaging and 443 is used for TCP for websites using SSL. So if the firewall is allowed to accept inbound traffic to these ports 80,110,143 and 443 then it would be possible to retrieve emails.
Answer:
Option C i.e., RIPEMD is the correct option for the following question.
Explanation:
Because RIPEMD is the algorithm that is used for the hash primary design characteristic which has two independent and unlike parallel chains of the calculation and computation and the outputs of which are then linked to the process at the end. It is also used for the safe process of replacing the 128-bit hash method.
Other options are wrong because these are not related to the following statement.
