Answer:
Option (4) is correct answer
Explanation:
IPsec stands for Internet protocol security. It is a protocol that works between two communication points. It provides integrity, confidentiality and data authentication for any network. It is used for Virtual private network. There are two types of VPN, From which an organization needs to choose one.
IPsec and OpenSSl in which IPsec VPN uses IP security.
Benefits of this network are as follows--
- Option 1 states that it works after the transport layer which is true.
- Option 2 states that when any user leaves the organization they have no need to take back the martial which he had already provided to the organization which is also the benefit of IPsec.
- Option 3 states that it provides security that is also correct because it is a protocol that is designed to provide security.
Hence option D (all of the above ) are correct.
Answer:
{"double", "char", "char", "double"} will be stored in word.
Explanation:
Given the word is an array of four strings, {"algorithm", "boolean", "char", "double"}. Hence, the length of the word array is 4.
The for-loop will only run for two iterations due to i < word.length/2, with i = 0 (first loop) and i = 1 (second loop).
In the first loop,
- word[word.length - 1 - i] = word[4 - 1 - 0] = word[3] = "double"
- Hence, the string "double" will be assigned to word[0] and overwrite "algorithm"
In the second loop,
- word[word.length - 1 - i] = word[4 - 1 - 1] = word[2] = "char"
- Hence, the string "char" will be assigned to word[1] and overwrite "boolean"
At last, the word array will hold {"double", "char", "char", "double"}
Answer:
replace()
Explanation:
The history object in javascript corresponds to browsing history.
It has the following methods for navigating through the history list:
back(): Go back in the history list
forward(): Go forward in the history list
go() : Navigate to the currently pointed url in the history list. It takes a parameter which can either be a numeric index or a string which is matched with the history list content.
replace() is not a method in the history object.
Answer:
Nmap CST CO CT0
Explanation:
Network map (Nmap) is a network scanning and host detection tool used in penetration testing to sorting out vulnerability in a network. Nmap APIs are used in packet sniffer tools as well to scan for available networks. There are different nmap command , but the command needed to scan a port with less noise to evade an IDS is the nmap's "Nmap CST CO CT0" command.
