Answer:
The correct answer to the following question is option e.) Usenet.
Explanation:
Usenet - it is a collection of the user-submitted messages or notes on the various subject that posted to the servers on the worldwide network. Each of the subject collection of notes is known as newsgroups. There are thousands of the newsgroups which is possible for us to form the new one.
It works like the decentralized computer network which allows us to download our required files. We can also download and access the binary files along with the text post.
Answer:
userB will use his/her private key.
Explanation:
The steps involved in using asymmetric cryptographic algorithm are as follow:
1. Each user generates a pair of keys to be used for the encryption and decryption of messages.
2. Each user places one of the two keys in a public register or other accessible file. This is the public key. The companion key is kept private.
3. If UserA wishes to send a confidential message to UserB, UserA encrypts the message using UserB's public key.
4. When UserB receives the message, she decrypts it using her private key.
Answer:Schema
Explanation: A schema is the group that contains objects of databases with views, index, triggers, tables etc features. The specific user can access schema who persist a certain username.The user is considered as the owner of the database and its element.
Schema is usually bound to have only single database.There are some schema that are already present in the system as the in-built schema .E.g.- sys, guest etc.
