Answer:
Rapid Elasticity is the correct answer of this question.
Explanation:
Rapid elasticity is a cloud computing phrase for scalable storage, or the capacity to deliver scalable software. The cloud computing model has many different and necessary features which separate both cloud computing and an in-house technology. One such attribute is Rapid Elasticity.
The principle of rapid elasticity in specific cloud computing conditions does cause some problems.The knowledge that companies still need to distribute and decommission services is often negligible on the part of the client or user.please help asap
Compare and contrast if-else and elif statements. Give examples.
What are the relational operators? How are they used?
Answer:
a. Comparison of if-else and elif:
if else follow as:
If (Condition)
{
In case if condition true, expression in this section executes
}
else
{
In case condition is false, expression in this section executes
}
elif Statement follows as:
If (Condition)
{
In case if condition true, expression in this section executes
}
{
in case, condition is false, move to elif block
elif (Condition)
{
In case elif condition true, expression in this section executes
}
else
{
In case elif condition is false, expression in this section executes
}
}
Explanation:
In if else, program first check the condition in "if statement", if condition is true it move into the body of "if " and execute the expression. If the condition is false it moves to the body of "else" and execute the expression.
elif is another block of condition in If else condition,It works as in "if statement" if the condition is true the program executes the expression of body of "if body". If the condition is false, it moves to another block of "elif", where it again check some other condition found in "elif statement". If the condition of "elif statement" is true it executes the expression of "elif body" otherwise in case of false condition it execute the expression in "else body".
It follows as: if - elif-else
Answer
b. the relational operators
Relation operators are the operators that are need in the expression to establish relationship between different operands of the expression.
Explanation:
In few expressions, their are some operators used to establish or show the relationship between different operands. These operator could be Equal (=), Greater than(>), Less than (<), Greater than equal to (>=) and Less than Equal to (<=).
These operators can be used in conditional statements that are used to check the relationship between operands and values through these operators.
Example
if (a>5)
{
if value of is greater than 5 then body of if will execute.
}
else
{
If value of a is less or equal to 5, this section will execute.
}
Analyze the following code. public class Test { public static void main(String[] args) { double radius; final double PI= 3.15169; double area = radius * radius * PI; System.out.println("Area is " + area); } }
Answer:
The output of the given code as follows:
Output:
Area is: 12.60676
Explanation:
In the given code some information is missing so, the correct code to this question can be described as follows:
Program:
public class Test //defining class
{
public static void main(String[] args)//defining the main method
{
double radius= 2; //defining double variable radius
final double PI= 3.15169; //defining double variable PI
double area = radius * radius * PI; //defining double variable area that calculates values
System.out.println("Area is: " + area); //print values
}
}
Explanation:
In the given java code a class "Test" is defined, in which a double variable "radius" is defined, which holds a value, that is 2. In the next step, a double constant variable, that is PI is defined, that holds a value, that is "3.15169". Then another double variable area is defined, that calculates the area value, and prints its value.When computer manufacturers overcame the enormous 13,000 Chinese character barrier by creating a workable keyboard through voice and handwriting recognition, PCs became more accessible to the Chinese. What was the predicted effect of the events on equilibrium price and quantity of PCs sold in China
Answer:
Check the explanation
Explanation:
The effect of the events on equilibrium price and quantity is that the Price and quantity of PCs sold soared, the innovation which later made PCs more robust and able to utilize the Chinese language shifts the demand curve for computers to the right.
The price and number rose.
You are trying to build a spreadsheet model to determine what to bid on a construction project. If you are having difficulty constructing the spreadsheet model, what type of chart might you draw to help you set up the model?
Answer:
Influence
Explanation:
While the user attempts to create a prototype spreadsheet to decide how to offer on such a building plan. Unless he has trouble building the worksheet model, he draws an influence chart to encourage himself to build up the model.
An influencing chart seems to be an understandable graphical representation of a question in judgment. It portrays that elements as modules of different colors and patterns, such as choices, complexities, and targets. It features influences as bullets between them.
The ________, which employed a typewriter-like keyboard, was introduced in the 1800s and enabled printers to set type mechanically rather than manually.
Answer:
The answer is "linotype machine".
Explanation:
The Linotype is the model, that is also known as a "line casting" tool. It uses in during the production of the corporation and related businesses enthrallment linotype.
In this model, a heated metal casting method is used that inserts a 90-character platform, which is used to casts metal frames for each use. It places matrix multiplication on one side, which are molds for word types.What process involves the changing of a program's internal structure without changing the way the program works?
Answer:
Code Refactoring
Explanation: Code Refactoring is
A systematic process of improving a code without changing its functionality. It can be used to change a "mess" into a clean code.
Refactoring is the process of restructuring an existing computer code, changing the factoring without changing its external behavior. It is intended to improve nonfunctional attributes of the software it is expected to achieve this by continuously improving the design of code, hence making it easier and easier to work with.
Therefore the process of "changing of a program's internal structure without changing the way the program works" Is Code Refactoring.
Consider a scenario in which Host A wants to simultaneously send packets to Hosts B and C. A is connected to B and C via a broadcast channel—a packet sent by A is carried by the channel to both B and C. Suppose that the broadcast channel connecting A, B, and C can independently lose and corrupt packets (and so, for example, a packet sent from A might be correctly received by B, but not by C). Design a stop-and-wait-like error-control protocol for reliably transferring packets from A to B and C, such that A will not get new data from the upper layer
Answer:
The description for the given question is described in the explanation section below.
Explanation:
Anyway, after getting acknowledgment from B, C and D will A immediately send a package here. So that we can establish a procedure whereby A must wait until all three acknowledgments are provided.
Start waiting for the specified scenario or situation:
⇒ For sender (sender is A here):
Keep the following steps repeated before all packets are shipped out.
Step 1 : Place in the broadcast network a fresh packet and configure the wait bit= 1 and the ack bits= 000 and begin the timer (t=0). While bit allows while for the sender(A) to deliver the next packet. Ack parts will hold the earned acknowledgments until now. When first bit= 1 then ack obtained from B, if second bit= 1 then ack obtained from B and instead ack collected from D if the last bit= 1.Step 2 : Once sender(A) receives a new acknowledgment, change the ack bits through generating the resulting bit= 1.Step 3 : Test if bits of the ack = 111 otherwise render a bit of wait = 0. Go so far as to step 1 and proceed to step 2.Step 4 : Whether A has been waiting for t= t0 time and therefore not gotten at least one ack, then place a certain packet on the channel and make t=0, ack bits= 000 and start preparing bit= 1. Then move forward with step 2.⇒ For receiver (receiver are B, C and C here):
Step 1 : Wait for another package.Step 2 : On delivery of the new document, send ack to the provider and begin countdown t = 0.Step 3 : When no latest packet arrives in t= t0 time then give the existing packet acknowledgment again. As it indicates the channel ack may be missing.Step 4 : Taking a move to 1.For reliable packet transfer from Host A to Hosts B and C via a broadcast channel, a stop-and-wait-like error-control protocol with redundancy, error detection, and acknowledgment mechanisms is used. Host A sends a packet, waits for acknowledgments from both B and C, and resends to only those hosts that did not acknowledge, using sequence numbers to track packets.
Explanation:In a scenario where Host A must send packets to Hosts B and C through a broadcast channel that can lose and corrupt packets, a stop-and-wait-like error-control protocol would require mechanisms for error detection and recovery. In this protocol, A sends a packet to both B and C and waits for an acknowledgment from both before sending the next packet. If A receives an acknowledgment from B but not from C, it only needs to resend the packet to C. Each packet contains sequence numbers to ensure that if a packet has to be resent, the receivers can distinguish the new packet from any previous ones. Furthermore, implementing redundancy, such as sending multiple copies or additional data for error checking (like checksums or CRC codes), enhances the reliability of the transmission.
To address potential eavesdropping and signal corruption, techniques borrowed from quantum communications, such as monitoring error rates and confirming key bits over an open channel, could theoretically be employed to enhance security in the digital communication domain. This would, however, be a more complex and less practical solution for a simple broadcast problem. The primary focus in error-control protocols for a broadcast channel is ensuring packet integrity and correctly acknowledging receipt.
The concept of 'spooky action at a distance' as mentioned in the question context may be a metaphor comparing quantum entanglement where information seems to be shared instantaneously over distances, which is not directly applicable to the design of a reliable error-control protocol for a broadcast channel in digital communications.
Paul is playing a game when his computer shuts down unexpectedly. Paul has noticed recently that his fans are running very loud. When Paul turns his computer back on, it starts to boot and then shuts off again.What is a possible problem with Paul’s computer?
Answer:
there is a lot of heat in his computer he should let the computer rest for some time and then use it again
A user complains because the social media apps on his mobile device always note his location. The user is worried about privacy, and would like to keep this information from being broadcast on his social media. Which of the following features should the user adjust in order to accomplish this?
Answer:
Geotracking
Explanation:
Geotracking is the feature that needs to be adjusted in order to keep this information from being broadcast on his social media.
Often a successful attack on an information system is due to poor system design or implementation. Once such a vulnerability is discovered, software developers quickly create and issue which of the following, in order to eliminate the problema. patch
b. bot
c.logic bomb
d.Trojan horse
Answer:
Option A i.e., Patch.
Explanation:
The effective intrusion towards the data system is sometimes related to inadequate layout or execution of the system. Upon discovery of this flaw, application designers rapidly construct and release a patch to solve the issue.
A patch seems to be the series of improvements intended to modify, resolve or enhance a system program or even its associated information. It requires resolving protection problems as well as other defects, known patch corrections or bugfixes, and enhancing the accessibility, reliability, or efficiency of these patches.
A security administrator is testing the security of an AP. The AP is using WPA2. She ran an automated program for several hours and discovered the AP's passphrase. Which of the following methods was she MOST likely using?
A. IV attack
B. Disassociation attack
C. WPS attack
D. Evil twin attack
Answer:
WPS attack
Explanation:
WiFi protected setup (WPS) is a convenient feature that allows the user to configure a client device against a wireless network by simultaneously pressing a button on both the access point and the client device (the client side “button” is often in software) at the same time. Since it has access to the Access point, it can get the passphrase.
A computer file that contained high-resolution, scaled images of hundreds of individual plants from a recently surveyed island, but no other information about the plants, might allow you to separate the plants into species using which species concept
Answer: Morphological
Explanation: Morphology in biology is the study of organisms using just their form and structure. It is the form and structure of an organism.
Morphological Grouping allows you to use the size, shape, and structure of an organism or one of its parts to know the specie that organism belongs to. Using traditional systems of taxonomy, classifications can be based on the morphological characteristics of organism, and from the question the characteristics of the plants which can be are clearly captured with high resolution computer can be used to group the plants into species using the morphological concept.
Alan is developing a business impact assessment for his organization. He is working with business units to determine the maximum allowable time to recover a particular function. What value is Alan determining? A. Recovery time objective (RTO) B. Recovery point objective (RPO) C. Business recovery requirements D. Technical recovery requirements
Answer:
A. Recovery time objective (RTO)
Explanation:
The recovery time is defined as the maximum length of time require to recover a system or any network from the failure.
Hence, to determine the recovery time of the function, one can use the RTO.
Computer models and simulations are used to formulate, refine, and test hypotheses. Describe a scenario that could be modeled by a computer and explain one benefit and one drawback of doing the simulation on a computer instead of real world.
Answer:
Explanation: one scenario that can be modeled by computer simulation is weather forecasting like the possibility of it to rain in the next few days
Main advantages of simulation
Study the behavior of a system without building it
Main disadvantages of simulation include:
Expensive to build a simulation model.
Modeling disease spread via computer simulations allows rapid scenario testing. Benefit: Efficient evaluation of interventions. Drawback: Potential inaccuracies due to simplified assumptions.
Imagine modeling the spread of a contagious disease like COVID-19 using computer simulations. A benefit of using computer models is the ability to quickly test various scenarios (e.g., different levels of vaccination, social distancing measures) in a controlled environment. This can provide insights into which interventions are most effective without the time and cost associated with real-world trials.
However, a drawback is the potential for inaccuracies if the model does not accurately reflect real-world complexities. Factors such as human behavior, which can significantly impact disease transmission, may be difficult to simulate accurately. Moreover, unforeseen variables or interactions may not be accounted for, leading to misleading results.
In conclusion, while computer simulations offer speed and flexibility in testing hypotheses, ensuring their accuracy and reliability in representing real-world dynamics is crucial to deriving meaningful insights and making informed decisions.
A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter, despite verifying terminal settings. What is the issue?
Answer:
Only rollover cables can be used in network device console management port.
Explanation:
Intermediate network devices are used for transmitting packets across networks. It has ports for connecting to other intermediate devices and end devices like the computer system.
Routers and switches are examples of intermediate network devices. They have management ports used to initially and periodically configure these devices. The console port is the main management port for device console. An administrator connects to the port using a rollover cable, which has a serial or USB connector on the computer end and a RJ45 on the network device end.
The calculation of the likelihood of an attack coupled with the attack frequency to determine the expected number of losses within a specified time range is called the __________.
Answer:
Loss Frequency is the correct answer of this question.
Explanation:
Calculating the probability of an event combined with the frequency of the attack to calculate the estimated number of losses within a given time period is called the loss frequency.
Occurrence of losses is how often there will be losses. The incidence of losses is used to assess the probability of similar future losses.If the risk of property damage or ability to perform is unlikely to occur or evolve in the future, you would have low frequency of losses.For Example:- Loss level for exposure to groundwater if your company is in a wetland is probably high.
Which of the following statements is true of a server? Question 18 options: A) It supports processing requests from remote computers. B) It provides access only for one user at a time. C) It stores the results of computations in the main memory. D) It creates a backup of all information within a system.
Answer:
Option (A) is the correct answer of this question.
Explanation:
The server supports the processing requests from the remote computers. A system is a device built to accommodate inquiries from many other external systems and customers to execute transactions. Employees are called private computer ,tablets, including phones which connect websites.
Network resources are handled through servers.The server is a software application or tool providing a service to some other software program and its customer, also identified as those of the user.
Other options are incorrect because they are not related to the given scenario.
Option A is correct, It supports processing requests from remote computers.
A server is a computer or system that is designed to provide services or resources to other computers or users on a network.
It handles requests and provides services such as file storage, data processing, hosting websites, email services, and more.
These requests can come from remote computers or clients connected to the network, and the server is responsible for processing and responding to those requests.
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A(n) _____ is an interactive information system consisting of hardware, software, data, and models (mathematical and statistical) designed to assist strategy makers in an organization.
Answer:
decision support system
Explanation:
A decision support system is a set of related computer programs and the data required to assist with analysis and decision-making within an organization.
Cheers
Kamilla is creating a pet adoption website, and is currently learning about her options using the position property.
If Kamilla wants an element to remain in the same location in a browser window, even as the user scrolls through the Web page, she would use the ____ position property.
a. absolute
b. fixed
c. relative
d. float
Answer:
B. Fixed position property.
You just turned on a four port Ethernet switch (it hasn’t learned any addresses yet) and connected a host to each port. You send packet #1 from 00:11:22:33:44:55 to 66:77:88:99:00:11 which arrives at port 1 of your switch. Next, packet #2 is sent from 22:33:44:55:66 to 00:11:22:33:44:55 which arrives at port 3 of your switch. Which of the following are true?
1. Packet #1 is broadcast on all ports
2. After the first packet is received, the switch associates 66:77:88:99:00:11 with port 1
3. Packet #2 is only sent out on port 1
4. Packet #2 is sent out on ports 1, 2, 4
Answer:
Option 2 is correct.
Explanation:
When the user recently switched over that port Ethernet device, which is, no addresses have yet been acquired as well as a client has been linked on each port. He sends #1 packet from 00:11:22:33:44:55 to 66:77:88:99:00:11 arriving at the device's port 1. Next packet #2 is transmitted between 22:33:44:55:66 to 00:11:22:33:44:55 that appears at the switch's port 3.
So that the Package # 2 will be sent only through port 1 by the user who switched over the network.
Which of the following is a disadvantage of using face-to-face communication over other communication channels? A) There is lag time between transmission and reception of the message. B) It is often difficult to schedule a time to meet face-to-face. C) Face-to-face communication reduces your ability to hold the receiver's attention. D) It is more difficult to develop effective relationships with individuals when you use face-to-face communication.
Answer:
Option B is correct.
Explanation:
The drawback to choosing face-to-face contact across certain platforms of interactions is that it is always impracticable to plan a schedule for face-to-face conversation because mostly the time of both participants should not be the same, sometime the one person wait for the other person or the other person wait for 1st one.
The following problems occur through the internet, the system configuration or the browsers, application configuration. So, the following are the reasons that describe the other options are not appropriate according to the scenario.The answer choice which is a disadvantage of using face-to-face communication over other communication channels is that:
B) It is often difficult to schedule a time to meet face-to-face.
According to the given question, we are asked to state the answer choice which is a disadvantage of using face-to-face communication over other communication channels.
As a result of this, we can see that when a person is making use of face-to-face communication, then he is taking in real time with the person and the possible disadvantage of this is that it is often difficult to schedule a time to meet face-to-face
Therefore, the correct answer is option B
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As the new manager at your local grocery store, you want to create a more efficient inventory process by allowing outside vendors and suppliers to review current inventory records and adjust recurring shipment orders to reduce product waste. What type of network should you use?
Final answer:
The manager should use an Electronic Data Interchange (EDI) system to improve the inventory process, which allows vendors to review and adjust orders, thus increasing efficiency and reducing waste.
Explanation:
As the new manager at a local grocery store looking to improve your inventory processes, you should consider the implementation of an Electronic Data Interchange (EDI) system. EDI allows for the computer-to-computer exchange of business documents in a standard electronic format between business partners. This system would enable outside vendors and suppliers to review current inventory records and adjust their shipment orders accordingly, ensuring a more efficient inventory process and reducing product waste.
To further enhance the supply chain, advancements in technology, transportation methods, and robust policies during national emergencies should be considered. For example, Amazon utilizes highly computerized warehouses and economies of scale to lower costs per sale, which is a strategy worth considering. Additionally, the adoption of labor rights protections is crucial for the stability of supply chain operations.
By incorporating EDI technology and considering strategies employed by industry leaders like Amazon, your grocery store can achieve greater efficiency and reduce unnecessary expenses caused by outdated inventory management practices and congested transportation networks.
Local-area network (LAN) A It interconnects locations scattered throughout a metropolitan area. 2 Wide-area network (WAN) B It is a network whose scale is even smaller than a LAN. An example of this type of network is a connection between a PC and a digital camera via a universal serial bus. 3 Metropolitan-area network (MAN) C It interconnects network components within a local region. 4 Personal-area network (PAN) D It interconnects network components that are geographically dispersed between two locations.
Answer:
Local-area network (LAN - It interconnects network components within a local region
Metropolitan-area network (MAN)- It interconnects locations scattered throughout a metropolitan area
Wide-area network (WAN) - It interconnects network components that are geographically dispersed between two locations.
Personal-area network (PAN) - It is a network whose scale is even smaller than a LAN. An example of this type of network is a connection between a PC and a digital camera via a universal serial bus
Explanation:
Local-area network (LAN - It interconnects network components within a local region, it is smaller compared to a WAN
Metropolitan-area network (MAN)- It interconnects locations scattered throughout a metropolitan area
Wide-area network (WAN) - It interconnects network components that are geographically dispersed between two locations.it uses routers to link between the geographical locations
Personal-area network (PAN) - It is a network whose scale is even smaller than a LAN. An example of this type of network is a connection between a PC and a digital camera via a universal serial bus
You are running a web server app in Ubuntu Server. Users complain that their browsers are loading webpages with errors. Where are you likely to find the log file where the web server reports its errors?
Answer:
/var/log
Explanation:
The /var/log location identifies the location to view the log file.
Records of usage of a particular OS or software can be viewed in the log file. They usually provide a detailed view of the events of an application or system.
Log files usually provide a massive guide for troubleshooting a service, application or OS. Due to the possibility of a service or application to generate log files, these come in handy when a service malfunction, because it contains detailed information about the events of that service or application.
The code snippet below checks whether a given number is a prime number. What will be the result of executing it? public static void main(String[] args) { int j = 2; int result = 0; int number = 0; Scanner reader = new Scanner(System.in); System.out.println("Please enter a number: "); number = reader.nextInt(); while (j <= number / 2) { if (number % j == 0) { result = 1; } j++; } if (result == 1) { System.out.println("Number: " + number + " is Not Prime."); } else { System.out.println("Number: " + number + " is Prime. "); }.A) The code snippet will not compile.
B) The code snippet will display the desired result.
C) The code snippet will display an incorrect result.
D) The code snippet will loop forever.
Answer:
B) The code snippet will display the desired result.
Explanation:
The code Snippet will give the expected result.
Prime numbers are numbers that are have only two divisors... That is 1 and itself
The while block:
while (j <= number / 2) {
if (number % j == 0) {
result = 1;
}
j++;
}
ensures that whenever there is a remainder of dividing the variable number by j, then it is not a prime number, since prime numbers are only divisible by 1 and themselves. The result =1 is then tested in an if statement to give the expected output
Final answer:
The code snippet correctly determines if a number is prime and will display the desired result; however, the efficiency could be improved by checking divisors only up to the square root of the number.
Explanation:
The code snippet provided checks whether a given number is prime. The result of executing this code snippet will be B) the code snippet will display the desired result. When the user enters a number, the program will divide that number by all integers from 2 up to the number divided by 2.
If any of these divisions result in a remainder of 0, the result variable is set to 1, indicating that the number is not prime. If none of the divisions have a remainder of 0, the result variable remains at 0, meaning the number is prime.
The only issue with this code is that it will continue checking until number/2 even though we could optimise it by only checking up to the square root of the number (number¹/²). However, this does not affect the accuracy for determining if a number is prime within the range checked.
Write a class named Accumulator containing: An instance variable named sum of type integer. A constructor that accepts an integer parameter, whose value is used to initialize the sum instance variable. A method named getSum that returns the value of sum. A method named add that accepts an integer parameter. The value of sum is increased by the value of the parameter.
Answer:
The following are the code in the C++ Programming Language.
//define header file
#include <iostream>
// using namespace
using namespace std;
//define a class
class Accumulator
{
//set private access modifier
private:
//declare integer type variable
int sum;
//set public access modifier
public:
//define constructor
Accumulator (int sum)
{
//refer the same class as instance variable
this->sum = sum;
}
//define integer type function
int getSum()
{
//return the value of sum
return sum;
}
//define void type function
void add (int value)
{
//variable sum is increased by the argument value
sum += value;
}
};
Explanation:
The following are the description of the code.
Firstly, set the required header file and namespace then, define a class 'Accumulator' and inside the class. Set private access modifier then, declare an integer data type variable 'sum'. Declare a class constructor whose name is the same as the class name 'Accumulator()' and pass integer data type argument 'sum' in its parameter that refers to the same class as instance variable. Define a integer data type function 'getSum()' that return the value of the variable sum. Finally, define a void type function 'add()' and pass the integer data type argument 'value' in its parameter in which the variable sum is increased by the argument value .what is the sentinel value in the following code snippet?
public static void main(String[] args)
{
int age = 0;
int sum_of_ages = 0;
int stop = 1;
Scanner reader = new Scanner(System.in);
System.out.println("Enter an age (-1 to stop): ");
age = reader.nextInt();
while (age != -1)
{
sum_of_ages = sum_of_ages + age;
System.out.println("Enter an age (-1 to stop): ");
age = reader.nextInt();
}
System.out.println("Sum of ages " + sum_of_ages);
return 0;
}
The sentinel value in the following code snippet is 1.
What is sentinel value?An algorithm that uses the presence of a sentinel value as a condition for termination, generally in a loop or recursive algorithm, is known as a sentinel value in computer programming.
For instance, the number "-1" can be used as the sentinel value in a loop algorithm that computes non-negative integers because the computation will never encounter that value as a valid processing output. Also known as a signal value or a flag value.
A while loop can also be used as a sentinel loop. Until it encounters a certain value that indicates the end, a sentinel loop keeps processing data. The sentinel is the name of the exceptional value. For the sentinel, any value is possible.
Therefore, in the following line of code, the sentinel value is set to 1.
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What specific record type is found in every zone and contains information that identifies the server primarily responsible for the zone as well as some operational properties for the zone?
The SOA is the specific record type found in every zone and contains information that identifies the sever primarily responsible for the zone as well as some operational properties for the zone.
Explanation:
The Start of Authority Records (SOA) has the following information they are
Serial Number: This number is used to find when zonal information should be replicated.
Responsible person: The Email address of a person is responsible for managing the zone.
Refresh Interval: It specifies how often a secondary DNS server tries to renew its zone information.
Retry Interval: It specifies the amount of time a secondary server waits before retrying the zone information has failed.
Expires After: IT specifies the amount of time before a secondary server considers its zone data if it can't contact with the primary server.
Minimum TTL: It specifies the default TTL value for a zone data when a TTL is not supplied.
SELECT vendor_name, COUNT(*) AS number_of_invoices, MAX(invoice_total - payment_total - credit_total) AS balance_due FROM vendors v JOIN invoices i ON v.vendor_id = i.vendor_id WHERE invoice_total - payment_total - credit_total > (SELECT AVG(invoice_total - payment_total - credit_total) FROM invoices) GROUP BY vendor_name ORDER BY balance_due DESC (Please refer to the code example above.) When this query is executed, the rows will be sorted by:________.a. balance_due in descending sequence b. invoice_id c. vendor_id
Answer:
Option a is the correct answer for the above question.
Explanation:
The above question asked about the order of the result which is derived from the above query. The above query holds an order by clause in desc order which is used to produce the result in descending order.The descending order result is produced on the behalf of balance_due attributes and the option a also states the same. Hence option a is correct while the other is not because:-Other is not states that the result is produced on the behalf of descending order.Answer:a
Explanation:
__________ refers to the coupling of data stored in files and the specific programs required to update and maintain those files such that changes in programs require changes to the data.