(Q) Which are the weaknesses of a shift cipher?

Part I (Each 4 Pts. Total 40.) Choose the best one. Please provide reason of your choice in a few sentences or reasons not choosing the other choices. Reason must be in your own words. Use guidelines for reference as given in the instructions.
To protect information, it is sufficient to protect against possible virus threats: True/False justify your answer
Which are the weaknesses of a shift cipher?A. Natural language letter frequency makes them easy to decode.B. The number of letters in the alphabet makes them easy to decode.C. Once the shift is determined the message is decoded.D. Once you have the code book you can decode the message instantlyE. A&BF. A, B & CG. A, B, C and DH. A & CNo reason required.
What is the basis of the modern cryptography? _____A. the laws of mathematicsB. manipulation of dataC. creating disguises for informationD. none of the aboveReason:
Historically, the primary and compelling reason for advances in cryptography has been _.a. protecting business assetsb. the need for individual privacyc. warsd. keeping diplomatic conversations secretReason: _
A ___ requires that the cipher alphabet changes throughout the encryption process.a. monoalphabetic substitution cipherb. polyalphabetic substitution cipherc. quantum cipherd. alphanumeric shift cipherReason: _
one of the Network threats isA. buffer overflowB. slowing the computerC. denial of serviceD. computer lock uphow does it happen: _
Risk is _. A. a weakness in the system B. a circumstance that may cause loss or is possible danger C. is a vulnerability that can be exploited D. Nothing to worry about Reason:
The trustworthiness of a system is diminished because of.a. exposure to risksb. demand for keysc. confidence decreasesd. bad weatherReason: _
The _ controls the action of the algorithm.a. The receiverb. the length of the plain textc. cipher textd. keyReason:
What has become a major web problem with respect to security?a. scripting errorsb. mapping attacksc. on-line surveysd. user ignorance
Reason: _

regards to the osmosis of pieces into lumps. Mill operator recognizes pieces and lumps of data, the differentiation being that a piece is comprised of various pieces of data. It is fascinating regards to the osmosis of pieces into lumps. Mill operator recognizes pieces and lumps of data, the differentiation being that a piece is comprised of various pieces of data. It is fascinating to take note of that while there is a limited ability to recall lumps of data, how much pieces in every one of those lumps can change broadly (Miller, 1956). Anyway it’s anything but a straightforward instance of having the memorable option huge pieces right away, somewhat that as each piece turns out to be more natural, it very well may be acclimatized into a lump, which is then recollected itself. Recoding is the interaction by which individual pieces are ‘recoded’ and allocated to lumps. Consequently the ends that can be drawn from Miller’s unique work is that, while there is an acknowledged breaking point to the quantity of pi>
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