What is the main purpose of a DNS server?
Assign IP addresses to devices
Filter IP traffic on devices
Resolve hostnames to IP addresses
Run directory services

Answer:

B. Constant Loop

Explanation:

Looping involves going over a block of code or statement infinitely or over a particular number of times. There are a number of loops, such as the infinite loop, while loop, do-while loop among others.

Infinite loop: All loops are expected to terminate after a few iterations, however, if that block of code is not available, the loop is said to be an infinite loop. This is because it will iterate continuously and indefinitely.

While loop: Also referred to as a Pretest loop, because before the statements are executed in its body, it verifies the boolean expression.

Do-while loop: Also referred to as a Posttest loop, because it tests the boolean expression after the block or statement is executed.

Answer:

D. None of these

Explanation:

The control structure that causes a statement or a group of statements to repeat is called a control loop, or simply, a loop.

In many programming languages, a loop contains a group of statements that are executed repeatedly based on a certain criterion (or condition). As long as this condition is true, the statements within the loop are executed.

Three types of control loop structure are the for, while and do...while loops.

Answer:

D) local area

Explanation:

Is a computer network that links devices within a building or group of adjacent buildings, especially one with a radius of less than 1 km.

A 'local area' network is a small-scale network for connecting devices to share resources and data, commonly enabled by Wi-Fi technology, which can be managed by connection software or mobile VPNs for secure connectivity.

A local area network is a computer network that spans a relatively small area, allowing all computer users to connect with each other to share data and peripheral devices, such as printers. Connection manager software or a mobile VPN can be utilized to manage multiple connections securely. Wi-Fi is a supporting technology for LANs, allowing portable computing devices to connect to the Internet with speeds approaching wired Ethernet. It is often used in homes, offices, and public hotspots, and can be a paid or free service depending on the business model.

Answer: Option(d) is correct

Explanation:

Information science is defined as as the science that is based on collection, storage, processing and retrieving of information and data.It related with the technology, people and data to connect them with each other .Management, control and facilities are provided by information science.

Answer:

Option E i.e., Select the functions of the system you wish to use is the correct answer.

Explanation:

In the above statement, some part of the question is missing that is options.

The first step is taken by the user is that they have been select those methods of the computer system which he wants to use firstly if he has to implement the software or an application for that manufacturers who sales the appliances of the kitchen. Then, it is necessary to take the following steps by the user according to its needs.

Answer:

[tex]\frac{x+1}{2x+1}r%[/tex]

Explanation:

Congress is debating a proposed law to reduce tax rates. If the current tax rate is r%, then the proposed rate after x years is given by this formula: r 1 1 1 1 x . Rewrite this formula as a simple fraction

The formula can be rewritten as thus [tex]\frac{r}{1+\frac{1}{1+\frac{1}{x} } } \\\\\ 1+\frac{1}{x} \\\frac{x+1}{x} we have \\\frac{1}{x+1/(x)} \\\frac{x}{x+1} \\1+\frac{x}{x+1} \\\frac{2x+1}{x+1}[/tex]

r%*x+1/(2x+1)

[tex]\frac{x+1}{2x+1}r%[/tex]

What have simply done is to find the LCM of the lowest fraction at the bottom of the relation , then solve upward

compress into proper fraction. I then normalized by brionging the numerator downward and the denominator upward

Answer:

Open standards and protocols.

Explanation:

A network is the platform on which two or more devices can share resources. The laptops, desktops, tablets, smartphones and other devices are end devices in a large wireless network called the internet.

They are able to communicate wireless, though they are of different brands and specifications. The information technology has evolved to promote this interconnection of devices by introducing open standards and protocols for generally agree use, rather than proprietary standards of individual companies that will not communicate.

The OSI and TCP/IP suite model of networking has been generally accepted by most companies (if not all) as the standard of communication.

Answer:

C. Ctrl+k.

Explanation:

The bash shell is a command processor interface in Linux operating system as a default login shell. There are other versions for operating systems like Windows and Mac OS. A user can input a plain text command to the command line interface and use different key combinations to initiate different action.

The key combination used to delete the content of the command line from the position of the cursor is the Ctrl+k combination.

Answer:

<!-- Modified by selena ramirez - for html compliance -->

Explanation:

In HTML, <!-- .. --> tag is used to insert comments in the webpage code.

Comments written inside the tag is visible only on the code, and is not displayed in the browsers when the page is requested by the client computer.

Comment tag is useful when there is a lot of code and multiple developers are dealing with the same code.

Comments help developers understand what changed is made and why.

Answer:

# 30 + (x -300) * .45ç correct answer

A = 30 #CONSTANT fee for <= 300 minutes

m = int(input("Enter the number of minutes "))

c = 0 # initialize cost variable

if (m>300):

   c = 30 + ((m - 300) * 0.45) #Cost when the minute is greater 300

   print("The cost for ", m, " minutes is $",c )

else:

   print("The cost for ", m, " minutes is $",A )

Explanation:

   c = 30 + ((m - 300) * 0.45) #Cost when the minute is greater 300

First 300 is subracted from the given minute to get the extra minute, and then the extra minute is multiplied by $0.45 after which it is added to the constant of $30 for the 300 minutes

Answer:

Transport Layer                                    

Explanation:

Answer:

1- Software distributed for a multitude of user: network

2- Software you must purchase before using:  buyware

3- Software distributed over a limited license: shareware

4- Software distributed free of charge: freeware

Explanation:

The software which we have to buy before using it is called buyware. The software which is only provided to the people who have lisence to use it, is called shareware. The software which can be used by many users is called the network. software which can be used without purchasing is called freeware.    

Software licenses can be categorized based on how the software is distributed and used. Freeware refers to software that is distributed free of charge, while shareware is distributed with a limited license. Network software is distributed to a multitude of users, and buyware requires a purchase before use.

Part A:

Part B:

Answer:

Establishing a pool of addresses

Explanation:

Regularly the first and the final IP address is configured automatically, but we can personalize these IP addresses, always that is the first step when we activate the DHCP server.

Then we must assign a time for the use of the IP in seconds, we enter the IP in the primary DNS, the second is optional, and we enter the domain name.

Answer:

The number 4 will be returned.

Explanation:

Given;

List = [0, 1, 2, 3, 4]

Using the AP Reference Guide;

The first element has an index of 1 and can be accessed using the same. i.e

=> List[1] = 0

The second element has an index of 2 and can be accessed using the same. i.e

=> List[2] = 1

Therefore, if our code tries to access List[5], then the number at index 5 will be returned. i.e

=> List[5] = 4

This implies that the last number 4 will be returned.

Note: Many programming languages (such as Java) actually start their collection (array, list) index from 0 rather than 1. But since we are using the AP Computer Science Principles Reference Guide, the index has to start from 1.

Answer:

The correct answer to the following question will be Option B (ROM).

Explanation:

Bootstrap is the programming which initializes the OS during initialization. The bootstrap loader creates small operator programs that connect and monitor the various computer hardware components.

ROM is Read-only memory, which will be used to hold a computer's start-up commands, also recognized as firmware.

No other method was used to help save system startup. ROM, then, is the right answer.

Final answer:

The bootstrap program, necessary for starting the computer and initiating the operating system loading process, is stored in ROM (Read-Only Memory), not in RAM, hard drive, or virtual memory.

Explanation:

When the computer is started, a bootstrap or Initial Program Load (IPL) begins testing the system. This bootstrap program is stored in ROM (Read-Only Memory). Unlike RAM (Random Access Memory), which is volatile and requires power to maintain its data, ROM is non-volatile and retains its data even when the computer is powered off.

This makes ROM an ideal storage medium for the bootstrap program, as it needs to be reliably accessed whenever the computer is powered on to start the operating system loading process. RAM is used as working memory for the CPU, storing data temporarily while the system is running, but not suitable for storing the bootstrap program due to its volatile nature.

Answer:

The answer is "decrease; decrease".

Explanation:

DVD movies are used to short and a digital portable digital video, It uses a disc that stores much more data as compared to CD.

Answer:

The answer is "assessment"

Explanation:

In the given question some information is missing, that is options that can be described as follows:

a) containment strategy.

b) assessment.

c) incident response.

d) disaster assessment.

Assessment also known as community risk, which is used for evaluations. It played a crucial role in the reaction and recovery after a dangerous incident in any organization.

Answer:

Add an entry to the HOSTS file

Explanation:

A file that is used to add the host name along with their IP addresses is called Host file. In this file all the IP addresses are mapped with their respective host names. Whenever some user tries to access some website, he may use the name of website to access it. The website have both name and IP address of the server, both of these information stored in host file. On GUI the user only see the information of Host name.

If some user only access the IP address of the website instead of the host name. The technician should add the name and IP address of the host in Host file. He should follow the following steps to resolve the problem.

Answer:

No

Explanation:

Because every link can handle the sum of the application data rate even when everyone is using the application ate the same time (worst scenario), there won't be any congestion to control. Because we have a good link capability the network doesn't require any congestion control mechanism.  

Note: When trying to solve this kind of problems always keep in mind the worst scenario, if the network is capable of withstanding the worst scenario and no information about the scalability of the network is given then you don't need congestion control.

Answer:

The answer is "Option c".

Explanation:

Cryptography is a process, in which by using code we encrypt information and communication to be read and processed by only those expected, and the explanation of given option, that were not correct can be described as follows:

Answer:

Benchmarking.

Explanation:

Web servers are platforms used in networking to provide resources for websites and software applications. Every end devices in a network request for website resources and applications from Web servers.

To maintain these resources, web server performance must be evaluated to prevent unexpected downtime of the server. One way of evaluating web server performance is the benchmarking test.

The benchmarking test is used to compare the performance of the hardware and software of the server system.

Answer:

Proxy Server

Explanation:

Answer:

i think its A.

Explanation:

:)

Answer:

administrator must enforce a specific password length minimum

Explanation:

Based on the information provided within the question it can be said that in order to ensure that complex passwords are used the administrator must enforce a specific password length minimum. By placing a minimum on password length you are making sure that the password has a certain complexity and thus making it a lot harder for those passwords to be cracked by hackers.

Answer:

A. True.

Explanation:

The internet or the world wide web (www) is a global network of interconnected networks. It has a wide range of dedicated servers, intermediate network devices like routers and switches, and end devices to access data.

The website is a collection of web pages hosted on web servers on the internet. Web browsers are application softwares used by end devices to request for web pages. There are two types of network connection, peer to peer and client/server connection.

The peer to peer network involves computers serving as client ( requesting for data) and server (transmit data) at the same time. The client/server network one has a dedicated server that transmits data and a client that request for data.

This makes computer running web browsers, clients to web servers on the internet.

Answer:

A. Participate actively in

Explanation:

The brain starts to develop even before a child is born and continues into adulthood. During the first few first years of a child's life, neurons, synapses and axon are multiplied to millions. The child's learning process determines the neural connections to be cut off by pruning. An active connection is retained while inactive neurons, synapses and axons are eliminated.

As the child grows, neural connections are strengthened by active participation in the learning process. But when these connections are left idle, they tend to decay.

Final answer:

Actively participating in the learning process by using elaborative rehearsal, the self-reference effect, distributed practice, and repeated rehearsal creates strong neural networks. Employing mnemonic devices and sensory inputs enhances cognitive learning and the formation of semantic networks.

Explanation:

To create strong neural networks in the brain, one must participate actively in the learning process. Active participation encompasses techniques such as elaborative rehearsal, which involves deeply processing and linking new information to other information and memories, making it more meaningful. Employing the self-reference effect by making the material personal, using distributed practice to space out learning, and engaging in repeated rehearsal to ensure information moves from short-term to long-term memory are all strategies that contribute to stronger neural connections.

Other essential strategies include creating mental images, utilizing mnemonic devices, and engaging in activities that stimulate cognitive learning. This could involve drawing connections to past experiences, utilizing various sensory inputs, or creating visual representations to aid comprehension. It is important to note that memory techniques such as mnemonic devices, like acronyms and acrostics, can be particularly helpful for recalling information. Ultimately, the more connections one forms to a concept, the better they can remember it, as per the theory of spreading activation.

Answer:

B. Use cross-platform tools to write code that will translate the existing Android app code into different native formats.

Explanation:

Cross-platform application development tools are tools that can be used tool generate applications of different platforms, by just writing a single type of code. It has the ability to automatically create an application of a different platform from another.

A developer can develop an application like Android and convert it to IOS for Apple. Xamarin, Appcelerator coroner etc, are all examples of cross-platform tools.

Answer:

Correct answer is (c) paragraph

Explanation:

Paragraph contained all the necessary information that Danielle is needed. Its enables one to identify and source for information easily.

Answer:

The first index myString[0]

The last index myString[4]

Explanation:

Indexing starts at "0". so the first character in a string will be at index "0" and the last character will be at index "-1". But since we were given the length of this string to be 5, we know that the index of the last character will be "4".

The python code bellow will print character at the first and last index:

myString = "hello"

print("The First Index is "+myString[0])

print("The Last Index is "+myString[-1])

Answer: the employment demand would increase.

Explanation:

Several factors affect the employment demand especially in a field as peculiar as engineering, the cumulative build up of unemployed graduates and the skill set required to fit into the present working structure is also of Paramount importance. The evaluation method for recruitment seeks to function based on this rationale by selecting a few amongst many.

Final answer:

The economic situation points to an increase in employment demand for graduating engineers, tied to economic recovery and the trend of higher job growth for those with more education. Future enrollments in engineering programs are expected to increase with economic recovery. Countries like China and India have a high number of engineering graduates, reflecting their focus on technology and industry.

Explanation:

Based on the current economic situation, the employment demand for graduating engineers is likely to increase as economies recover from downturns and companies start to expand and invest in new technologies and infrastructure. This is supported by the trend that higher levels of education, including engineering degrees, are associated with higher job growth rates. For instance, those with a bachelor's degree have job growth expectations of 17 percent.

With a significant economic recovery, enrollments in graduating engineering programs are also expected to rise. This is because students may perceive engineering as a field with strong job prospects, which can lead to more secure and well-paying positions. Therefore, during economic recoveries, the allure of a promising career in engineering could attract more students to these programs.

In the context of global engineering graduates, countries with the most graduates can be indicative of their prioritization of technical education and their industrial and technological sectors' requirements. For example, countries like China and India have high numbers of engineering graduates due partly to their large populations and emphasis on engineering as a driver of economic growth.

The output of the Java program is "21 30 21 ". This result is obtained by the order of method calls and alterations of the SomeClass object's instance variables modified in the methods m1() and m2().

The student is asking for the output of a Java program that consists of two classes: SomeClass and SomeTester. To understand the output, one must follow the flow of execution and the changes in variable values throughout the program. Here are the steps the execution will follow:

Therefore, the output of the program is "21 30 21 ", which matches the second option provided in the question.