Answer:
Answer is (d) value of 10
Explanation:
Usually when we write "int x=10;", a memory space is allocated for an integer variable with name x, and content 10.
Answer:
Evolution of computer technology can be divided into five generations. First generation computer consisted of vacuum tubes and they were used from 1943-1958. ... Third generation (1966-1973) computer consisted of integrated circuits (IC) i.e. many transistors in single silicon chip.
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Answer:
Encryption method security:-
- Encryption method representing each alphabetic character as an integer between 0 and 25.
- Now, apply RSA algorithm for each integer is not an efficient secure encryption method.
Explanation:
- Let consider alphabetic characters set {A, B... Z} .
- Each alphabetic character forms a set of message block values M={0,1,2...,25).
- From encryption method the corresponding cipher text block value C = {0e mod n,1e mod n, 2e mod n,..., 25e mod n}.
- Then, compute the cipher text with knowledge of Bob's public key;
- If the public key is generated, then possibility to decrypt the cipher text to plain text.
- The generated public key is easily calculated by everyone and security is lost.
- Therefore, the encryption method is not secure.
Encryption method is not secure, Most efficient attack against this method:-
- Now, compute the encryption message with the function Me mod n for all the possible values of M.
- This is the most efficient attack against the scheme in encryption method.
- Then, create a look-up table with cipher text as an index to the corresponding plain text as a value for appropriate location in the table.
Answer:
An absolute cell reference is a cell address that contain a dollar sign $ in row and column coordinate or both. We use absolute reference to keep row and column constant
Example: C5*$C$2
The reference to C2 is absolute and will not change when copied.