Please answer as many as possible. Anything will be greatly appreciated! Thank you and God Bless You!

Which software development model follows a linear-sequential model, where one step must be completed before the next step begins?

Group of answer choices

Incremental

Prototyping

Waterfall

Build and fix

Agile

Which IPSec protocol provides confidentiality, data origin authentication, and data integrity?

Group of answer choices

Authentication Header (AH)

Encapsulating Security Payload (ESP)

Internet Security Association and Key Management Protocol (ISAKMP)

Internet Key Exchange

Which encryption method developed by IBM became the Data Encryption Standard (DES)?

Group of answer choices

Lucifer

Satan

Devil

Beelzebub

If asymmetric cryptography is used to send a secret message, which of the following is true:

Group of answer choices

the private key encrypts, the public key decrypts

Either the public or private key can encrypt

The public key encrypts, the private key decrypts

asymmetric encryption can't be used to send secret messages