Answer:
An observation: Java does not support true multi-dimensional arrays; rather, it supports 1-dimensional arrays, where each element can itself be another 1-dimensional array. The difference is the way memory is allocated, where a[i][j] differs from a[i,j].
Explanation:
Answer:
You...answered all of the questions.
Explanation:
All of them have a response!
Answer:
INPUT "Enter your marks in computer"<u><em>;</em></u>CS
<u><em>IF</em></u> C>40 THEN
PRINT "You are passed.
<u><em>"</em></u>
ELSE
PRINT "You are failed."
END <u><em>IF</em></u>
Explanation:
see corrections above.
Answer:
It is not valid
Explanation:
I'll assume the question relates to cell referencing in Microsoft Excel.
To reference a cell in Excel, we make use of the following steps:
- Write out the cell column name first
- Followed by the row number
7b implies that, the row number first, followed by the column name; this doesn't follow the naming convention of cells.
Hence, 7b is invalid.
Answer:
B. Symmetric key encryption
Explanation:
Symmetric key encryption is one in which a single encryption key is sent to the receiver so both sender and receiver share the same key. In this type of encryption, the sender uses a particular key to encrypt the data and sends the encrypted data (cipher data) to the receiver and then the receiver uses the same key to decrypt the data.
Public key encryption, or asymmetric encryption uses two keys - a private key and a public key. The public key is know to everyone while the private key is known only to those for whom the message is intended. An application of this type of encryption is in SSL (Secure Sockets Layer) - a protocol for transmitting data privately on the internet.
Private key encryption is not exactly one of the encryption methods but rather, a private key and a public key are used in encryption.
The best option is therefore <em>symmetric key encryption</em>.
<em>Hope this helps!</em>
