Computers and Technology, 22.09.2019 01:30 robert7248

How many possible password of length four to eight symbols can be formed using english alphabets both upper and lower case (a-z and a-z), decimal (0-9) and the special characters(_ and $) ?

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Answer from: maren17

In a password, symbol/characters can be repeated. first calculate the total

symbols which can be used in a password.

So there are total 26(A-Z),26(a-z),10(0-9) and 2(_,$) symbols.

that is equal to 26+26+10+2=64.

Total number of password of length 4 from the given characters is:

here each place of password can filled in total number of symbols i.e 64 way .

Then total number of possible password is:

64*64*64*64=16777216

Total number of password of length 5 from the given characters is:

here each place of password can filled in total number of symbols i.e 64 way .

Then total number of possible password is:

64*64*64*64*64=1073741824

Similarly we can find,

Total number of password of length 6 from the given characters is:

64*64*64*64*64*64=68719476736

Total number of password of length 7 from the given characters is:

64*64*64*64*64*64*64=4398046511104

Total number of password of length 8 from the given characters is:

64*64*64*64*64*64*64=281474976710656

total number of password possible is:285,942,833,217,536

Answer from: Quest

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability

Answer from: Quest

1. view> toolbar> reviewing2. right click on any toolbar> reviewing3. double click on trk in the status bar

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