Beginner learning for everything

Basic of the exam: 65 question and 130 Minutes . Question is based on scenario. 1 correct answer of 4 choices and 2 correct answer of 5 choices. There is no indication what is the point of each question. There should be 720 points to pass exam. There is no indication of difficulty level. There are 3 passes, Easy question, Complex questions and unknowns. There is no negative marking of the exam. Exam guide: Hands on experience using compute, networking, storage and database aws services. Hands on experience of AWS deployment and management services. Ability to identify and define technical requirements  An understanding of network technologies as they relate to AWS. Learn the basics of ipv4 and the 7 layer model. Then apply this knowledge to networking services in AWS. An understanding of security features and tools that AWS provides and how they relate to traditional services.  Availability zone, region and edge server knowledge you should have. Well architectu

Encryption work by taking a number of text blocks and then applies a key to these to produce cipher .blocks. Cipher blocks could end up being the same for the same input text. Thus an intruder could try and guess the cipher text. This is knows as electronic code book.You will find that every time you encrypt, you will find that every time you encrypt you will get the same value. Apart from using a password to generate an encryption key, which complete decimates the key space, we have the problem of the algorithm used to process the plain text. If this is ECB then we have repeating cipher blocks for the same plain text. If I take "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" and encrypt with 3-DES and a key of "beginner12345" we get: encrypted: DDE22EE186FA0425 DDE22EE186FA0425 DDE22EE186FA0425 DDE22EE186FA0425 DDE22EE186FA0425 DDE22EE186FA0425 DDE22EE186FA0425 B2460B702A2508AE Where we can see that the "a...a" values are always code