DES is a commonly used symmetric encryption
A) is a commonly used symmetric encryption
<u>Explanation:</u>
DES stands for Data Encryption Standard. It is a symmetric key algorithm and is used for encrypting electronic data. It was developed in 1975. DES is one of the oldest encryption standards to be used in the industry.
The algorithm takes 16 rounds of permutations in order to encrypt data. But now, with the advent of technology, as new algorithms have been designed and put in use, DES is less preferable.
In the process of key generation, some keys generated sometimes turn out to be weak and hence are prone to attacks. If not for the weak keys generation, DES works perfectly fine and is an effective algorithm to encrypt data.
Answer:
Option B is the correct answer.
Explanation:
Because of an app builder and they need to display the groups as the final menu items of the navigation in the software of the mobile. Then, they unable to select those groups in which the items list on the menu. So, that's why the following groups are not in the list of the selected navigation menu.
Other option is not true because they are not according to the following statement.
A proxy server. A system requests information from the internet, and that traffic is routed through the proxy server before arriving to the requesting system.
This is why proxy servers are used for hiding identity and being more secure, as internet traffic would show the IP address of the proxy server, and not the requesting system, though this often depends on the type of proxy server, as some proxy server's main objective isn't anonymousity, but rather efficiency.
Answer:
Please check the attachment.
Remember:
All N1, N2, N3N, N4, N5, N6, N7 and each of them are certainly like the server. Also note that Router, repeaters, switch and transmitter are not mentioned in the above diagram. Please assume it in between each location.
Explanation:
Please check the attachment. Also, Remember that Server is at the head office, and rest 7 are the 7 branches. The VOIP, video surveillance, Door security system and the computer networks are being shown in the diagram. And each location has a network of computers joined through VLAN, and each of them are given the IP addresses of Class A, Class B and class C of the iPV4(or IPV6), which can be found by the future network administer, operators through the IP address, that is assigned.
