If you encrypt the secret key with someone else's public key, then only that person can decrypt it with his private key. The encrypted content can be freely shared with anyone, however only the intended recipient can retrieve the secret key since he is the only one with the proper private key.
1. Datagram-based network layer: Forwarding, Routing.
2. VC- based network layer: Forwarding, Routing, Call setup.
Answer: A- Public Key Encryption
Explanation: The Public key Encryption is used prevalently on the web, it allows for secure messages to be sent between parties without having to agree on, or share, a secret key. It uses an asymmetric encryption scheme in which the encryption key is made public, but the decryption key is kept private.
E-text <span>is digital textual information that can be stored, manipulated, and transmitted by electronic devices. The term "e-text" stands for electronic text and it is used for any digital document written, read, transmitted or manipulated by electronic devices, such as smart phones, PCs, tablets,...The origins of the e-text are in the beginning of the Internet.</span>
Answer:
z = a.c' + a.b.d' + b.c'.d'
Explanation:
The truth table for this question is provided in the attachment to this question.
N.B - a' = not a!
The rows with output of 1 come from the following relations: 01 > 00, 10 > 00, 10 > 01, 11 > 00, 11 > 01, 11 > 10
This means that the Boolean expression is a sum of all the rows with output of 1.
z = a'bc'd' + ab'c'd' + ab'c'd + abc'd' + abc'd + abcd'
On simplification,
z = bc'd' + ab'c' + ac'd' + ac'd + abc' + abd'
z = ac' + abd' + bc'd'
Hope this helps!
