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3 years ago

Which of the selections below represents a recursive query?

Computers and Technology

1 answer:

ElenaW [278]3 years ago

5 0

Answer:

D. A DNS server asks another DNS server to resolve a domain name

Explanation:

DNS (Domain name system) queries are essentially of two types;

i. recursive address resolution

ii. iterative or non-recursive address resolution

=> In the <em>recursive address resolution</em>, which represents a recursive query, when a DNS server A, receives a request from a client and does not know how to resolve such request, the DNS server sends the query to another DNS server B on behalf of this client. DNS server B can either reply to the query with the actual answer or an error message. If it's an actual answer, it returns to the client. Otherwise, it queries another DNS server, say C.

=> In the <em>iterative address resolution</em>, once the DNS server A receives a request from the client, it tries to reply the client with the best answer it can give. If the DNS server A does not have an answer, it refers the client to another DNS server say B. In this case, the server A does not directly query the server B. Instead, it refers the client to the server B.

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Create a stored procedure named prc_inv_amounts to update the INV_SUBTOTAL, INV_TAX, and INV_TOTAL. The procedure takes the invo

vova2212 [387]

Answer:

The procedure in SQL is created as follows

Explanation:

--creating the procedure

CREATE OR REPLACE PROCEDURE prc_inv_amounts (W_IN IN NUMBER)

--defining variables

W_CK NUMBER := 0;

W_SUBT NUMBER := 0;

W_TAX NUMBER := 0;

BEGIN

--Authentication process of the invoice

SELECT COUNT(*) INTO W_CK FROM INVOICE WHERE INV_NUMBER := W_IN;

--Transaction confirmation

IF W_CK = 1 THEN

SELECT SUM(LINE_TOTAL) INTO W_SUBT FROM LINE

WHERE

--checking the invoice for the desired invoice number

LINE.INV_NUMBER = W_IN;

W_TAX :=W_SUBT * 0.08;

--updating the invoice

UPDATE INVOICE

--setting the new values

SET INV_SUBTOTAL = W_SUBT,

INV_TAX = W_TAX,

INV_TOTAL =W_SUBT + W_TAX

WHERE INV_NUMBER = W_IN;

--ending the if statement

END IF;

--ending the procedure

END;

7 0

3 years ago

The word count of the active document is typically displayed on the ________.

romanna [79]

Click the Word Count in the Proofing Group. Maybe the name is the Bottom ribbon tab

4 0

3 years ago

To ____ a public member function of a base class in the derived class, the corresponding function in the derived class must have

Norma-Jean [14]

Answer:

None of the mentioned options

Explanation:

If we define a method in a derived class with same declaration type as that of base class then it is said to be overriding a function which behaves differently which will depend on the object which is calling the method.
Option a,b and c are not any kind of methods we implement using coding.
Option d is done when number or data types of parameters are different than the declaration of the base type.

8 0

3 years ago

Which approach is ideal for ensuring that a Webpage is maintained and does not appear neglected to users?

Greeley [361]

Answer:

Explanation:

I think putting hyperlink in essential pages is a good idea as it may guide a user

8 0

3 years ago

In case of a suspected data breach, what course of action should a chief information security officer (CISO) take

guapka [62]

Answer

1. Assemble his team

2. Find reason for breach

3. Evaluate what was lost

4. Ensure password change

Explanation:

In case of a suspected breach, the Chief information security officer should first of all assemble his incidence response team. This team should have representatives from all areas of the organization.

Then the reason for the breach and how access was gained has to be found out. An evaluation of what has been lost in the breach would be carried out and it's likely impact on the company.

In case credentials were stolen the CISO has to ensure that the employees change passwords. Also he has to notify all the necessary parties about the breach.

The CISO has to ensure that all employees are trained properly on security and they comply to security policies.

7 0

3 years ago