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2 years ago

14

If a menu-driven program uses a loop to redisplay the menu after a selected operation has been performed, the menu should probab

ly have an item that the user can select to __________.

Computers and Technology

1 answer:

tangare [24]2 years ago

7 0

That the user can select to either reset the options, or go back to a previous screen, if you can show me options ill tell you which one.

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Several users on the second floor of your company's building are reporting that the network is down. you go to the second floor

Svetllana [295]

Answer:

Question users

Explanation:

Q:

Several users on the second floor of your company's building are reporting that the network …

A. Establish a plan of action

B. Question users...

A:

B. Question users

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2 years ago

The Mohs scale is used to express which mineral property?

olchik [2.2K]

Its answer is c. hardness

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3 years ago

Half of the integers stored in the array data are positive, and half are negative. Determine the

jonny [76]

Answer:

Check the explanation

Explanation:

Below is the approx assembly code for above `for loop` :-

1). mov ecx, 0

2). loop_start :

3). cmp ecx, ARRAY_LENGTH

4). jge loop_end

5). mv temp_a, array[ecx]

6). cmp temp_a, 0

7). branch on nge

8). mv array[ecx], temp_a*2

9). add ecx, 1

10). jmp loop_start

11). loop_end :

Assumptions :-

*ARRAY_LENGTH is register with value 1000000

*temp_a is a register

Frequency of statements :-

1) will be executed one time

3) will be executed 1000000 times

4) will be executed 1000000 times

5) will be executed 1000000 times

6) will be executed 1000000 times

7) `nge` will be executed 1000000 times, branch will be executed 500000 times

8) will be executed 500000 times

9) will be executed 1000000 times

10) will be executed 1000000 times

Cost of statements :-

1) 10 ns

3) 10ns + 10ns + 10ns [for two register accesses and one cmp]

4) 10ns [for jge ]

5) 10ns + 100ns + 10ns [10ns for register access `ecx`, 100ns for memory access `array[ecx]`, 10ns for mv]

6) 10ns + 10ns [10ns for register_access `temp_a`, 10ns for mv]

7) 10ns for nge, 10ns for branch

8) 30ns + 110ns + 10ns

10ns + 10ns + 10ns for temp_a*2 [10ns for moving 2 into a register, 10ns for multiplication],

110ns for array[ecx],

10ns for mv

9) 10ns for add, 10ns for `ecx` register access

10) 10ns for jmp

Total time taken = sum of (frequency x cost) of all the statements

1) 10*1

3) 30 * 1000000

4) 10 * 1000000

5) 120 * 1000000

6) 20 * 1000000

7) (10 * 500000) + (10 * 1000000)

8) 150 * 500000

9) 20 * 1000000

10) 10 * 1000000

Sum up all the above costs, you will get the answer.

It will equate to 0.175 seconds

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2 years ago

Authorized agent Confidentiality Integrity Encryption 6:53 PM ______ means that only people with the right permission can access

mojhsa [17]

Answer:

The answer is "Confidentiality"

Explanation:

Confidentiality alludes to shielding data from being gotten to by unapproved parties. All in all, solitary the individuals who are approved to do so can access delicate information. Imagine your bank records, You ought to have the option to get to them obviously, and representatives at the bank who are assisting you with an exchange ought to have the option to get to them, yet nobody else ought to. An inability to keep up Confidentiality implies that somebody who shouldn't have access has figured out how to get it, through deliberate act or coincidentally. Such a disappointment of Confidentiality, normally known as a breach can't be helped. When the secret has been uncovered, it is highly unlikely to un-uncover it.

Assuming your bank records are posted on a public site, everybody can realize your bank account number, balance, and so forth, and that data can't be eradicated from their brains, papers, PCs, and different spots. Virtually all the significant security occurrences reported in the media today include loss of Confidentiality.

Thus, in summary, a breach of Confidentiality implies that somebody accesses data who shouldn't be permitted to.

6 0

2 years ago

Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, da

PolarNik [594]

Answer:

Following are the solution to the given terms:

Explanation:

Data Model: A set of concepts that are ideal for describing the layout, computational tools, relations, semantics, constraints on accuracy.

Database Scheme: It is also known as the overall design of the database.

Database State: It is the data in the database at a particular moment in time.

Internal Schema: The physical structure of the database is defined.

Conceptual Schema: It hides the details of physical storage.

External Schema: It describes the part of the database the user group sees. In other words, we can say that it is a view of the database.

Data Independence: The ability to modify the schema at a single level while modifying the schema at a higher level is often recognized.

DDL: It stands for the Data Definition Language, which is used by DBA and dev use for creating With particular scheme.

DML: It refers to the Data Manipulation Language, which is used to manipulate, add, recover, insert, remove, and alter data.

SDL: It stands for the storage definition language, in which the internal schema of the database is applied for storage description.

VDL: The view definition language specifies the user to view and mapping their conceptual schema.

Query Language: It is just an independent, dynamic, high-level dialect used during manipulation.

Host Language: It is also the machine language, that would be incorporated into the general programming language by low-level data handling commands.

Data sublanguage: It uses for embedding in the last language.

Database Utility: It is a program, which helps to handle the database with DBA's modules.

Catalog: The entire structure and constraints of the database is defined.

client/server architecture: The design of the database server system that device usability: model user, model server (landless storage) software Government computer design in which many users (remote processors) demand a central server to receive service (host computer).

Three-tier architecture: It is the application, data, user interface.

n-tier architecture: multiple levels. The nth level must only be able to handle the n+1 application and transmit it to the n-1 point.

3 0

3 years ago